CN1043754A - Spheroidal graphite cast iron - Google Patents
Spheroidal graphite cast iron Download PDFInfo
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- CN1043754A CN1043754A CN 88108791 CN88108791A CN1043754A CN 1043754 A CN1043754 A CN 1043754A CN 88108791 CN88108791 CN 88108791 CN 88108791 A CN88108791 A CN 88108791A CN 1043754 A CN1043754 A CN 1043754A
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- cast iron
- iron
- copper
- molybdenum
- manganese
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- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 28
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 83
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 60
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229910052802 copper Inorganic materials 0.000 claims abstract description 56
- 239000010949 copper Substances 0.000 claims abstract description 56
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 51
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 45
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 45
- 239000011651 chromium Substances 0.000 claims abstract description 45
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 45
- 239000011572 manganese Substances 0.000 claims abstract description 45
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 44
- 239000011733 molybdenum Substances 0.000 claims abstract description 44
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 43
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 41
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 41
- 239000010703 silicon Substances 0.000 claims abstract description 41
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 39
- 239000004411 aluminium Substances 0.000 claims abstract description 39
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000011777 magnesium Substances 0.000 claims abstract description 38
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 33
- 229910052742 iron Inorganic materials 0.000 claims abstract description 25
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 23
- 239000011575 calcium Substances 0.000 claims abstract description 23
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 6
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 100
- 229910001563 bainite Inorganic materials 0.000 description 28
- 239000000126 substance Substances 0.000 description 27
- 230000006698 induction Effects 0.000 description 23
- 239000000155 melt Substances 0.000 description 22
- 238000002844 melting Methods 0.000 description 22
- 230000008018 melting Effects 0.000 description 22
- 239000004615 ingredient Substances 0.000 description 20
- 239000010439 graphite Substances 0.000 description 17
- 229910002804 graphite Inorganic materials 0.000 description 17
- 238000001816 cooling Methods 0.000 description 16
- 230000015572 biosynthetic process Effects 0.000 description 14
- 229910000604 Ferrochrome Inorganic materials 0.000 description 11
- 229910000616 Ferromanganese Inorganic materials 0.000 description 11
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 11
- 229910001060 Gray iron Inorganic materials 0.000 description 11
- 108010038629 Molybdoferredoxin Proteins 0.000 description 11
- 241000209094 Oryza Species 0.000 description 11
- 235000007164 Oryza sativa Nutrition 0.000 description 11
- HBELESVMOSDEOV-UHFFFAOYSA-N [Fe].[Mo] Chemical compound [Fe].[Mo] HBELESVMOSDEOV-UHFFFAOYSA-N 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000002425 crystallisation Methods 0.000 description 11
- 230000008025 crystallization Effects 0.000 description 11
- 238000011081 inoculation Methods 0.000 description 11
- 230000003993 interaction Effects 0.000 description 11
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 11
- 239000002667 nucleating agent Substances 0.000 description 11
- 235000009566 rice Nutrition 0.000 description 11
- -1 sodium aluminum fluoride Chemical compound 0.000 description 11
- 239000002699 waste material Substances 0.000 description 11
- 238000012856 packing Methods 0.000 description 10
- 239000002994 raw material Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 8
- 229910001566 austenite Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 229910001567 cementite Inorganic materials 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 5
- 239000010451 perlite Substances 0.000 description 5
- 235000019362 perlite Nutrition 0.000 description 5
- 239000013078 crystal Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Spheroidal graphite cast iron contains carbon, silicon, manganese, chromium, aluminium, copper, calcium, magnesium and iron, and this cast iron also contains molybdenum and nickel simultaneously, the ratio of each component following (weight %): carbon 3.0-3.5, silicon 1.5-3.0, manganese 1.5-2.0, chromium 0.5-1.0, copper 1.0-1.5, calcium 0.003-0.070, magnesium 0.04-0.10, aluminium 0.3-0.50, molybdenum 0.25-0.40, nickel 2.0-3.5, iron surplus.
Description
The present invention relates to Foundry Production, more precisely, relate to spheroidal graphite cast iron.
But the present invention's ride high ground is used for making and bears the high-wearing machine parts, for example makes the foundry goods of the exposed gear engagement that is used for grinding equipment, and in automobile making and other field distinctive heavy-duty machine part.
Known a kind of spheroidal graphite cast iron (Giessereitechnik, 1980, O.Liesenberg " Hochfestes Gusseiren mit Kugelgraphit aufder Grundlage Von Vergutung ", S.359-363) contain carbon, silicon, manganese, nickel, copper, molybdenum, phosphorus and iron.
This cast iron has following chemical components (weight %):
Carbon 2.9-3.7
Silicon 1.9-2.4
Manganese 0.2-0.45
Nickel 0.1-6.6
Copper 0.01-2.3
Molybdenum 0.40-0.75
Phosphorus 0.02-0.05
Iron surplus.
This cast iron is used for thickness less than 150 millimeters foundry goods.
But above-mentioned cast iron has low wear resistance at thickness in greater than 150 millimeters foundry goods, and reason is to have formed pearlitic structure.
Above-mentioned situation is interpreted as lacking chromium and aluminium in cast iron composition.
In addition, low manganese content can not guarantee to obtain bainite-austenite structure at thickness in greater than 150 millimeters foundry goods, and the existence of this tissue can improve the wear resistance of cast iron.
Using above-mentioned cast iron to obtain thickness is impossible greater than 150 millimeters foundry goods because along with forming the perlite part in greater than 150 millimeters foundry goods at thickness, thickness less than 150 millimeters foundry goods in formed bainite structure begin to decompose.This perlite has partly reduced the wear resistance greater than 150 millimeters foundry goods.
Known another kind of spheroidal graphite cast iron (SU, A, 432223) contains carbon, silicon, manganese, chromium, aluminium, copper, magnesium, calcium and iron.
This cast iron has following chemical components and ratio of component (weight %):
Carbon 2.8-4.0
Silicon 1.5-3.0
Manganese 0-0.6
Chromium 0.5-2.5
Aluminium 0.5-3.0
Copper 0.2-2.0
Calcium 0.01-0.1
Magnesium 0.01-0.1
Iron surplus.
When the cast iron of the above-mentioned chemical ingredients of cooling, wherein form ferrite-pearlite-cementite tissue.Because the hardness of structural constituent is low, has low wear resistance so have the cast iron of this tissue.
In addition, the chromium content in the cast iron surpasses 1% can cause forming stable carbide, and it can worsen the use properties of cast iron.
This known cast iron belongs to the thermostability cast iron with soft and wear resistance.It can be used to make the pressing mold of glasswork, part of furnace installation or the like, and in these occasions, ferrite-pearlite-cementite tissue is optimal.
But, it is unsuitable bearing the high-wearing mechanical component with the cast iron manufacturing with this material property, because the part by this cast iron manufacturing will be subjected to the intense attrition effect when working, polishing scratch can appear, and because they may adhere to mutually rapidly and bite.
In addition, the existence of cementite in this structure of cast iron can make and meet difficulty when instrument is processed into part with cutting (blade).
The salient features of this cast iron is as follows: Brinell hardness 280-320; Ultimate tension 300-350 MPa; Wear resistance 90-100 gram/rice
3Hour.
According to the present invention proposes the task of making spheroidal graphite cast iron, this spheroidal graphite cast iron has such chemical ingredients and such composition ratio, and they can improve its wear resistance by obtaining bainite structure in thickness reaches 300 millimeters foundry goods.
Above-mentioned task is to solve like this, and this spheroidal graphite cast iron contains carbon, silicon, and manganese, chromium, copper, aluminium, calcium, magnesium and iron also contain molybdenum and nickel simultaneously according to the present invention, the ratio of each component following (weight %):
Carbon 3.0-3.5,
Silicon 1.5-3.0,
Manganese 1.5-2.0,
Chromium 0.5-1.0,
Copper 1.0-1.5,
Calcium 0.003-0.070,
Magnesium 0.04-0.10,
Aluminium 0.3-0.5,
Molybdenum 0.25-0.40,
Nickel 2.0-3.5,
Iron surplus.
Press mentioned component and each component ratio, when foundry goods cools off, can obtain to have the cast iron of bainite-austenite structure.This tissue can guarantee to improve wear resistance, intensity and the use properties of cast iron.Under the whole situations of composition, when can avoiding cooling off cast iron at a slow speed, the existence of molybdenum and nickel forms pearlitic structure according to aforementioned proportion.
In addition, add molybdenum and nickel with same suitable component ratio, cast iron can be cooled to bainite transformation temperature and isothermal when leaving standstill, prevent to form perlite at thickness in greater than 150 millimeters foundry goods, and guaranteeing that austenite decomposes with the formation of bainite structure, the result has significantly improved the wear resistance of cast iron.
Be preferably in this spheroidal graphite cast iron, carbon, silicon, copper, the relative manganese of percentage total content of al and ni, the ratio of the percentage total content of chromium and molybdenum equals 3.9-4.2: 1.
This per-cent of said components hinders the formation of carbide, and the bainite that carbide then hinders in the structure of cast iron forms, even austenite is stable.
Might be in spheroidal graphite cast iron carbon, silicon, copper, the relative manganese of percentage total content of al and ni, chromium, the ratio of the percentage total content of molybdenum equals 3.9-4.0: 1, at this moment each component should adopt following ratio (weight %):
Carbon 3.0-3.5,
Silicon 1.5-2.7,
Manganese 1.5-1.75,
Chromium 0.5-0.9,
Copper 1.0-1.3,
Calcium 0.003-0.070,
Magnesium 0.04-0.10,
Aluminium 0.3-0.45,
Molybdenum 0.25-0.33,
Nickel 2.3-3.5,
Iron surplus.
Aforementioned proportion causes remained austenite content increase in the structure of cast iron, and the result has reduced the hardness of cast iron and improved the machinability of the part of being made by this cast iron, and does not reduce its wear resistance.
Be preferably in carbon in the spheroidal graphite cast iron, silicon, copper, the relative manganese of percentage total content of al and ni, chromium, the ratio of the percentage total content of molybdenum equals 4.0-4.2: 1, at this moment each component should adopt following ratio (weight %):
Carbon 3.1-3.5,
Silicon 2.5-3.0,
Manganese 1.5-2.0,
Chromium 0.5-0.6,
Copper 1.3-1.5,
Calcium 0.003-0.007,
Magnesium 0.04-0.10,
Aluminium 0.4-0.5,
Molybdenum 0.3-0.4,
Nickel 2.0-3.5,
Iron surplus.
Aforementioned proportion causes remained austenite content minimizing in the structure of cast iron, and the bainite amount increases, and the result has improved the hardness and the wear resistance of cast iron.
In induction furnace, carry out the Castiron Melting of above-mentioned chemical ingredients, in induction furnace, pack into: waste iron, conversion pig, ferromanganese, ferrochrome, nickel, copper, molybdenum-iron, steel scrap, silicocalcium, aluminium.
For obtaining globular graphite, inoculation of Gray Iron is handled in airtight jar and is carried out.With magnesium, sodium aluminum fluoride and ferrosilicon pack into this jar in, again the melts that is obtained after induction furnace melting is poured in the jar.Equal 1450-1480 ℃ by the cast iron temperature of coming out in the stove.The interaction of above-mentioned nucleating agent takes place in jar, and forms the cast iron that contains globular graphite and have the mentioned component ratio.
Then the melts in the jar is injected mold, it produces crystallization therein, and the formation bainite structure is followed in cooling, and obtains to have the antifriction cast iron of above-mentioned chemical ingredients and ratio of component.
Confirm that carbon content can cause forming cementite less than 3% in structure of cast iron, promptly reduced when cooling obtaining the necessary austenitic quantity of bainite structure, the result reduces the wear resistance and the use properties of this Cast Iron Products.It is unfavorable that carbon content is increased to greater than 3.5%.Because this can cause forming perlite-troostite part in structure of cast iron, the result causes its wear resistance to reduce equally.
Silicone content causes in structure of cast iron forming a large amount of cementites less than 1.5%, and silicone content is increased to greater than 3% causes occurring amount of ferrite and perlite in tissue, and the result reduces the hardness of cast iron.In addition, the increase of silicone content causes the fragility of cast iron.All these have reduced its use properties and wear resistance.
Verified, when manganese content is in the 1.5-2.0% scope in the cast iron composition, can guarantee in thickness reaches 300 millimeters foundry goods, to obtain bainite-austenite structure.Manganese content can not guarantee to obtain bainite structure less than 1.5%, but produce sizable perlitic range, the result has reduced the wear resistance of cast iron, manganese content is higher than 2.0% increase that then causes cementite in the structure of cast iron, the result causes forming the crack when with cutting tool this cast iron being processed into part, causes that simultaneously cast iron is along embrittlement of grain boundaries.
Manganese content can reduce the eutectoid transformation temperature in above-mentioned scope, and promotes the quick austenitizing of structure of cast iron whereby.
In addition, the increase of manganese content causes cast iron along embrittlement of grain boundaries, because this increase promotes to form big martensite belt along crystal boundary, this be since manganese at these grain boundary segregations and slowed down the speed of bainite transformation at this place, its reason is that the velocity of diffusion of carbon is slowed down and austenitic stability improves.
Confirm through us, less than 0.5% o'clock, can not guarantee in the foundry goods of thickness 150-300 millimeter, to obtain bainite structure at chromium content.In addition, form ferrite around globular graphite, the result has sharply reduced the wear resistance of cast iron.
Chromium content was increased to greater than 1.0% o'clock in the cast iron, caused that in its tissue the carburizing scale of construction significantly increases, and caused then that greater than 5% martensite volume significantly increases, and martensite causes cast iron hardness to increase, thereby produced difficulty when causing with cutting tool its mechanical workout.
The molybdenum that adds 0.25-0.40% can reduce the critical cooling velocity of cast iron, improves the hardening capacity of alloy, and this is essential condition for obtaining bainite structure.The add-on of molybdenum causes occurring perlite less than 0.25% in cast iron, the result reduces its hardness and wear resistance, and molybdenum content is higher than 0.4% and causes carbide occurring along crystal boundary, and the result has reduced the strength property of cast iron.
Confirm that the nickel that adds 2.0-3.5% can reduce the critical cooling velocity of cast iron and improve its hardening capacity, this just allows the cross section is that 300 millimeters foundry goods obtains bainite structure after the normalizing process.Nickel content was less than 2.0% o'clock in the cast iron, and the foundry goods of above-mentioned thickness is all can not guarantee to obtain bainite structure at as-cast condition or in as-heat-treated condition, and the nickel amount is increased to greater than 3.5% from considering it is irrational economically.
When making spheroidal graphite cast iron, the copper that adds 1.0-1.5% in above-mentioned scope can obtain bainite structure, separates out and makes the residual austenite stabilization owing to suppressed the carbide in the bainite structure, thereby improved intensity, hardness and the wear resistance of cast iron.In addition, add copper and can suppress the manganese segregation in cast iron composition, promptly can not form carbide along crystal boundary, the result has improved the hardness and the wear resistance of cast iron.
Copper content is reduced to less than 1.0% and can not guarantees to obtain bainite structure in cast iron, because reduced the hardening capacity of cast iron, copper content then causes forming quasiflake graphite greater than 1.5%, and the result causes that the strength property of cast iron reduces.
The add-on of aluminium and calcium is corresponding to 0.3% and 0.003% o'clock, under the situation of the chromium of maximum and manganese content, can not prevent to form primary cementite, aluminium content greater than 5% and calcium contents greater than 0.7%, then under the situation of above-mentioned chromium and manganese content, can be observed the ferrite and the perlite of formation, the result has reduced the wear resistance of cast iron.
In order to obtain globular graphite, the composition of cast iron should have the residue Mg content of following scope: 0.04-0.1%(weight).
Mg content in the cast iron causes globular graphite not only occurring in structure of cast iron, and vermiform or flake graphite occur during less than lower limit 0.04, and the result sharply reduces its intensity and use properties.Mg content too much causes magnesium supersaturation in the cast iron, the same negative effects that produces of result with Mg content deficiency in the cast iron, so Mg content should not surpass upper limit 0.1%(weight).
Carbon, silicon, copper, the relative manganese of percentage total content of al and ni, the ratio of the percentage total content of chromium and molybdenum is (3.9-4.0): 1, can guarantee cementite quantity minimum in the structure of cast iron, this just improves its use properties.
Above-mentioned chemical ingredients is formed and the spheroidal graphite cast iron of ratio for having of obtaining like this, and can improve its wear resistance owing to obtain bainite structure in thickness reaches the foundry goods of 150-300 millimeter.
In order to understand the present invention better, concrete scheme of the present invention is implemented in narration below.
Embodiment 1
In induction furnace, carry out the melting of above-mentioned chemical ingredients cast iron, the following raw materials according of in stove, packing into (weight %), waste iron 30%, conversion pig 50%, ferromanganese 1.4%, ferrochrome 0.7%, nickel 3.2%, copper 1.0%, molybdenum-iron 0.38%, steel scrap 11.17%, silicocalcium 1%, aluminium 0.35%.
Be to obtain globular graphite, carry out inoculation of Gray Iron and handle in airtight jar, together in the totally 0.3% and 0.5% ferrosilicon tank filling, the melts that will obtain after the melting in induction furnace is poured in the jar with magnesium and sodium aluminum fluoride.The interaction of above-mentioned nucleating agent takes place in jar, and the result forms spheroidal graphite cast iron.
Then the melts that will obtain carries out the crystallization and the cooling of cast iron there by injecting mold in the jar, follows the formation bainite structure.
The antifriction cast iron of Huo Deing has following chemical components and ratio of component (weight %) like this: carbon 3.0, silicon 1.5, manganese 1.5, chromium 0.5, copper 1.0, calcium 0.003, magnesium 0.04, aluminium 0.3, molybdenum 0.25, nickel 3.2, carbon wherein, silicon, copper, aluminium, the relative manganese of percentage total content of nickel, chromium, the ratio of the percentage total content of molybdenum is 4: 1.The cast iron that is obtained has following use properties: hardness HB388, wear resistance 8.89 gram/rice
3Hour.
Embodiment 2
In induction furnace, carry out the Castiron Melting of above-mentioned chemical ingredients, the following raw material (weight %) of in stove, packing into: waste iron 30%, conversion pig 61%, ferromanganese 1.35%, ferrochrome 0.8%, nickel 2.7%, copper 1.0%, molybdenum-iron 0.4%, silicocalcium 1.6%, aluminium 0.35%.
In closed tin, carry out the inoculation of Gray Iron processing for obtaining globular graphite.Magnesium and sodium aluminum fluoride totally 0.3% and 0.5% the ferrosilicon together of packing in this jar, the melts that will be obtained after the melting in induction furnace is poured in the jar.The interaction of above-mentioned nucleating agent takes place in jar, and the result forms spheroidal graphite cast iron.
Then the melts that will be obtained produces crystallization and cooling therein by injecting mold in the jar, follows the formation bainite structure.
The antifriction cast iron of Huo Deing has following chemical components and each ratio of component (weight %) like this: carbon 3.5, silicon 1.5, manganese 1.5, chromium 0.5, copper 1.0, calcium 0.005, magnesium 0.06, aluminium 0.3, molybdenum 0.25, nickel 2.7, carbon wherein, silicon, copper, the relative manganese of percentage total content of al and ni, chromium, the ratio of the percentage total content of molybdenum is 4: 1.The cast iron that is obtained has following use properties: hardness HB400, wear resistance 8.06 gram/rice
2Hour.
Embodiment 3
In induction furnace, carry out the Castiron Melting of above-mentioned chemical ingredients, the following raw material (weight %) of in stove, packing into: waste iron 30%, conversion pig 59%, ferromanganese 2%, ferrochrome 0.84%, nickel 3.0%, copper 1.5%, molybdenum-iron 0.46%, silicocalcium 2.0%, aluminium 0.4%.
In sealed can, carry out inoculation of Gray Iron and handle for obtaining globular graphite, with magnesium and sodium aluminum fluoride together totally 0.3% and 0.5% ferrosilicon pack in this jar, the melts that will be obtained after the melting in induction furnace is poured in the jar again.The interaction of above-mentioned nucleating agent takes place in jar.The result forms spheroidal graphite cast iron.
Then with the melts that obtained by injecting mold in the jar, produce the crystallization and the cooling of cast iron therein, follow the formation bainite structure.
The antifriction cast iron of Huo Deing has following chemical components and each ratio of component (weight %) like this: carbon 3.5, silicon 2.5, manganese 1.8, chromium 0.6, copper 1.5, calcium 0.008, magnesium 0.08, aluminium 0.4, molybdenum 0.3, nickel 3.0, carbon wherein, silicon, copper, the percentage total content of al and ni is with respect to manganese, chromium, and the ratio of the percentage total content of molybdenum is 4: 1.The cast iron that is obtained has following use properties: hardness HB388; Wear resistance 8.89 gram/rice
2Hour.
Embodiment 4
In induction furnace, carry out the Castiron Melting of above-mentioned chemical ingredients, following raw material is packed into (weight %) in the stove: waste iron 30%, conversion pig 59%, ferromanganese 1.3%, ferrochrome 0.7%, nickel 2.0%, copper 1.5%, molybdenum-iron 0.6%, steel scrap 1.75%, silicocalcium 1.8%, aluminium 0.55%.
In sealed can, carry out the inoculation of Gray Iron processing for obtaining globular graphite.With magnesium and sodium aluminum fluoride together totally 0.3% and 0.5% ferrosilicon pack in this jar, the melts that will be obtained after induction furnace melting is poured in this jar again.The interaction of above-mentioned nucleating agent takes place in jar.The result forms spheroidal graphite cast iron.
By injecting mold in the jar, carry out crystallization and cooling therein promptly and with the melts that obtained, follow the formation bainite structure.
The antifriction cast iron of Huo Deing has following chemical components and each ratio of component (weight %) like this: carbon 3.5, silicon 2.5, manganese 1.5, chromium 0.5, copper 1.5, calcium-0.070, magnesium-0.09, aluminium-0.5, molybdenum 0.4, nickel 2.0, carbon wherein, silicon, copper, the relative manganese of percentage total content of al and ni, chromium, the ratio of the percentage total content of molybdenum is 4.2: 1.The cast iron that is obtained has following use properties: hardness HB387, wear resistance 8.96 gram/rice
2Hour.
Embodiment 5
In induction furnace, carry out the Castiron Melting of above-mentioned chemical ingredients, the following raw materials according of in stove, packing into (weight %): waste iron 30%, conversion pig 60%, ferromanganese 1.3%, ferrochrome 1.47%, nickel 2.5%, copper 1.0%, molybdenum-iron 0.38%, silicocalcium 2.0%, aluminium 0.55%.
In sealed can, carry out inoculation of Gray Iron and handle for obtaining globular graphite, with magnesium and sodium aluminum fluoride together totally 0.3% and 5% ferrosilicon pack in this jar, the melts that will obtain after the melting in induction furnace is poured in this jar again.The interaction of above-mentioned nucleating agent takes place in jar, and the result forms spheroidal graphite cast iron.
Then with the melts that obtains by injecting mold in the jar, carry out crystallization and cooling therein, follow the formation bainite structure.
The antifriction cast iron of Huo Deing has following chemical ingredients and ratio of component (weight %) like this: carbon 3.5, silicon 3.0, manganese 1.5, chromium 1.0, copper 1.0, calcium 0.0070, magnesium 0.07, aluminium 0.5, molybdenum 0.25, nickel 2.5, carbon wherein, silicon, copper, the relative manganese of percentage total content of al and ni, chromium, the ratio of the percentage total content of molybdenum is 4: 1.Gained cast iron has following use properties: hardness HB421, wear resistance 6.62 gram/rice
2Hour.
Embodiment 6
In induction furnace, carry out the Castiron Melting of above-mentioned chemical ingredients, the following raw material (weight %) of in stove, packing into: waste iron 30%, conversion pig 51%, ferromanganese 2.4%, ferrochrome 0.7%, nickel 3.5%, copper 1.5%, molybdenum-iron 0.6%, steel scrap 7.45%, silicocalcium 1.5%, aluminium 0.55%.
In sealed can, carry out the inoculation of Gray Iron processing for obtaining globular graphite.With magnesium and sodium aluminum fluoride together totally 0.3% and 0.5% ferrosilicon pack in this jar, the melts that will obtain after the melting in induction furnace is poured in this jar again.The interaction of above-mentioned nucleating agent takes place in jar, and the result forms spheroidal graphite cast iron.
Then with the melts of gained by injecting mold in the jar, carry out crystallization and cooling therein, follow the formation bainite structure.
The antifriction cast iron of Huo Deing has following chemical components and ratio of component (weight %) like this: carbon 3.1, silicon 3.0, manganese 2.0, chromium 0.5, copper 1.5, calcium 0.050, magnesium 0.065, aluminium 0.5, molybdenum 0.40, nickel 3.5, carbon wherein, silicon, copper, the relative manganese of percentage total content of al and ni, chromium, the ratio of the percentage total content of molybdenum is 4: 1.Gained cast iron has following use properties: hardness HB355, wear resistance 11.2 gram/rice
2Hour.
Embodiment 7
In induction furnace, carry out the Castiron Melting of above-mentioned chemical ingredients, the following raw material (weight %) of in stove, packing into: waste iron 30%, conversion pig 58%, ferromanganese 1.3%, ferrochrome 1.47%, nickel 3.5%, copper 1.3%, molybdenum-iron 0.6%, steel scrap 0.68%, silicocalcium 1.9%, aluminium 0.45%.
In sealed can, carry out the inoculation of Gray Iron processing for obtaining globular graphite.With magnesium and sodium aluminum fluoride together totally 0.3% and 0.5% ferrosilicon pack in this jar, the melts that will be obtained after the melting in induction furnace is poured in this jar again.The interaction of above-mentioned nucleating agent takes place in jar.The result forms spheroidal graphite cast iron.
Then with the melts that obtained by injecting mold in the jar, carry out crystallization and cooling therein, follow the formation bainite structure.
The antifriction cast iron of Huo Deing has following chemical ingredients and ratio of component (weight %) like this: carbon 3.5, silicon 2.6, manganese 1.5, chromium 1.0, copper 1.3, calcium 0.070, magnesium 0.075, aluminium 0.4, molybdenum 0.4, nickel 3.5, carbon wherein, silicon, copper, the relative manganese of percentage total content of al and ni, chromium, the ratio of the percentage total content of molybdenum is that the cast iron that is obtained at 3.9: 1 has following use properties: hardness HB410, wear resistance 7.38 gram/rice
2Hour.
Embodiment 8
In induction furnace, carry out the Castiron Melting of above-mentioned chemical ingredients, the following raw materials according of in stove, packing into (weight %): waste iron 30%, conversion pig 58%, ferromanganese 2.0%, ferrochrome 1.0%, nickel 3.3%, copper 1.4%, molybdenum-iron 0.5%, steel scrap 0.85%, silicocalcium 1.7%, aluminium 0.45%.
In sealed can, carry out the inoculation of Gray Iron processing for obtaining globular graphite.Magnesium and sodium aluminum fluoride together totally 0.3% and 0.5% ferrosilicon pack into this jar in, the melts that will be obtained after the melting in induction furnace is poured in this jar again.The interaction of above-mentioned nucleating agent takes place in jar.The result forms spheroidal graphite cast iron.
Then with the melts that obtained by injecting mold in the jar, carry out crystallization and cooling therein, follow the formation bainite structure.
The antifriction cast iron of Huo Deing has following chemical ingredients and ratio of component (weight %) like this: carbon 3.4, silicon 2.8, manganese 1.75, chromium 0.75, copper 1.4, calcium 0.055, magnesium 0.085, aluminium 0.45, molybdenum 0.33, nickel 3.3, carbon wherein, silicon, copper, aluminium, the relative manganese of percentage total content of nickel, chromium, the ratio of the percentage total content of molybdenum is 4: 1.The cast iron that is obtained has following use properties: hardness HB390, wear resistance 8.75 gram/rice
2Hour.
Embodiment 9
In induction furnace, carry out the Castiron Melting of above-mentioned chemical ingredients, the following raw material (weight %) of in stove, packing into: waste iron 30%, conversion pig 55%, ferromanganese 1.85, ferrochrome 0.70%, nickel 3.1%, copper 1.2%, molybdenum-iron 0.54%, steel scrap 4.8%, silicocalcium 1.6%, aluminium 0.4%.
In sealed can, carry out the inoculation of Gray Iron processing for obtaining globular graphite.Magnesium and sodium aluminum fluoride together totally 0.3% and 0.5% ferrosilicon pack into this jar in, the melts that will be obtained after the melting in induction furnace is poured in this jar again.The interaction of above-mentioned nucleating agent takes place in jar.The result forms spheroidal graphite cast iron.
Then with the melts that obtained by injecting mold in the jar, carry out crystallization and cooling therein, follow the formation bainite structure.
The antifriction cast iron of Huo Deing has following chemical ingredients and ratio of component (weight %) like this: carbon 3.2, silicon 2.0, manganese 1.6, chromium 0.5, copper 1.2, calcium 0.020, magnesium 0.09, aluminium 0.35, molybdenum 0.35, nickel 3.1, carbon wherein, silicon, copper, aluminium, the relative manganese of percentage total content of nickel, chromium, the ratio of the percentage total content of molybdenum is 41.The cast iron that is obtained has following use properties: hardness HB380, wear resistance 9.44 gram/rice
2Hour.
Embodiment 10
In induction furnace, carry out the Castiron Melting of above-mentioned chemical ingredients, the following raw material (weight %) of in stove, packing into: waste iron 30%, conversion pig 50%, ferromanganese 1.7%, ferrochrome 1.24%, nickel 2.3%, copper 1.15%, molybdenum-iron 0.31%, steel scrap 10.0%, silicocalcium 2.0%, aluminium 0.5%.
In sealed can, carry out the inoculation of Gray Iron processing for obtaining globular graphite.Magnesium and sodium aluminum fluoride together totally 0.3% and 0.5% ferrosilicon pack into this jar in, the melts that will be obtained after the melting in induction furnace is poured in this jar again.The interaction of above-mentioned nucleating agent takes place in jar.The result forms spheroidal graphite cast iron.
Then with the melts that obtained by injecting mold in the jar, carry out crystallization and cooling therein, follow the formation bainite structure.
The antifriction cast iron of Huo Deing has following chemical ingredients and ratio of component (weight %) like this: carbon 3.5, silicon 2.7, manganese 1.5, chromium 0.9, copper 1.15, calcium 0.070, magnesium 0.055, aluminium 0.45, molybdenum 0.25, nickel 2.3, carbon wherein, silicon, copper, aluminium, the relative manganese of percentage total content of nickel, chromium, the ratio of the percentage total content of molybdenum is 3.9: 1.The cast iron that is obtained has following use properties: hardness HB420, wear resistance 6.7 gram/rice
2Hour.
By the foregoing description as can be known, the cast iron that is obtained has high-wearing feature and high strength.
Claims (4)
1, spheroidal graphite cast iron contains carbon, silicon, and manganese, chromium, aluminium, copper, calcium, magnesium and iron is characterized in that, it also contains molybdenum and nickel simultaneously, the ratio of each component following (weight %):
Carbon 3.0-3.5,
Silicon 1.5-3.0,
Manganese 1.5-2.0,
Chromium 0.5-1.0,
Copper 1.0-1.5,
Calcium 0.003-0.070,
Magnesium 0.04-0.10,
Aluminium 0.3-0.50,
Molybdenum 0.25-0.40,
Nickel 2.0-3.5,
Iron surplus.
2, according to the spheroidal graphite cast iron of claim 1, it is characterized in that, carbon, silicon, copper, the relative manganese of percentage total content of al and ni, the ratio of the percentage total content of chromium and molybdenum is 3.9-4.2: 1.
3, according to the spheroidal graphite cast iron of claim 1, it is characterized in that, carbon, silicon, copper, the relative manganese of the relative content of al and ni, the ratio of the percentage total content of chromium and molybdenum is
3.9-4.0: 1, this moment, each component adopted following ratio (weight %):
Carbon 3.0-3.5,
Silicon 1.5-2.7,
Manganese 1.5-1.75,
Chromium 0.5-0.9,
Copper 1.0-1.3,
Calcium 0.003-0.070,
Magnesium 0.04-0.10,
Aluminium 0.3-0.45,
Molybdenum 0.25-0.33,
Nickel 2.3-3.5,
Iron surplus.
4, according to the spheroidal graphite cast iron of claim 1, it is characterized in that, carbon, silicon, copper, the relative manganese of percentage total content of al and ni, chromium, the ratio of the percentage total content of molybdenum is
4.0-4.2: 1, this moment, each component adopted following ratio (weight %):
Carbon 3.1-3.5,
Silicon 2.5-3.0,
Manganese 1.5-2.0,
Chromium 0.5-0.6,
Copper 1.3-1.5,
Calcium 0.003-0.070,
Magnesium 0.04-0.10,
Aluminium 0.4-0.5,
Molybdenum 0.3-0.4,
Nickel 2.0-3.5,
Iron surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88108791 CN1043754A (en) | 1988-12-21 | 1988-12-21 | Spheroidal graphite cast iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88108791 CN1043754A (en) | 1988-12-21 | 1988-12-21 | Spheroidal graphite cast iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1043754A true CN1043754A (en) | 1990-07-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88108791 Pending CN1043754A (en) | 1988-12-21 | 1988-12-21 | Spheroidal graphite cast iron |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053398C (en) * | 1993-12-30 | 2000-06-14 | 北京科技大学 | Process for rolling white iron blades of ball thrower |
| CN100340689C (en) * | 2002-01-14 | 2007-10-03 | 乔治费希尔汽车技术有限公司 | Ductile Iron Alloy |
| CN100529135C (en) * | 2004-11-22 | 2009-08-19 | 乔治·费希尔汽车股份公司 | Spheroidal cast alloy and method for producing cast parts from said spheroidal cast alloy |
| CN102080178B (en) * | 2004-02-08 | 2012-12-19 | 昆明理工大学 | Quasi-casting high toughness bainitic low-carbon ductile iron and producing method thereof |
| CN102851574A (en) * | 2012-09-24 | 2013-01-02 | 苏州东海玻璃模具有限公司 | Heatproof alloy vermicular cast iron and method for preparing same |
| US10266927B2 (en) * | 2012-07-23 | 2019-04-23 | Ferry Capitain | Alloy, corresponding part and manufacturing method |
-
1988
- 1988-12-21 CN CN 88108791 patent/CN1043754A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053398C (en) * | 1993-12-30 | 2000-06-14 | 北京科技大学 | Process for rolling white iron blades of ball thrower |
| CN100340689C (en) * | 2002-01-14 | 2007-10-03 | 乔治费希尔汽车技术有限公司 | Ductile Iron Alloy |
| CN102080178B (en) * | 2004-02-08 | 2012-12-19 | 昆明理工大学 | Quasi-casting high toughness bainitic low-carbon ductile iron and producing method thereof |
| CN100529135C (en) * | 2004-11-22 | 2009-08-19 | 乔治·费希尔汽车股份公司 | Spheroidal cast alloy and method for producing cast parts from said spheroidal cast alloy |
| US10266927B2 (en) * | 2012-07-23 | 2019-04-23 | Ferry Capitain | Alloy, corresponding part and manufacturing method |
| CN102851574A (en) * | 2012-09-24 | 2013-01-02 | 苏州东海玻璃模具有限公司 | Heatproof alloy vermicular cast iron and method for preparing same |
| CN102851574B (en) * | 2012-09-24 | 2014-07-23 | 苏州东海玻璃模具有限公司 | Heatproof alloy vermicular cast iron and method for preparing same |
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