CN105803328A - Environment-friendly and low-production-cost alloy steel material used for automobile - Google Patents
Environment-friendly and low-production-cost alloy steel material used for automobile Download PDFInfo
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- CN105803328A CN105803328A CN201610334575.6A CN201610334575A CN105803328A CN 105803328 A CN105803328 A CN 105803328A CN 201610334575 A CN201610334575 A CN 201610334575A CN 105803328 A CN105803328 A CN 105803328A
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- 239000000463 material Substances 0.000 title claims abstract description 31
- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 27
- 239000011777 magnesium Substances 0.000 claims abstract description 13
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 7
- 239000010941 cobalt Substances 0.000 claims abstract description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011574 phosphorus Substances 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 7
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011593 sulfur Substances 0.000 claims abstract description 7
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000011575 calcium Substances 0.000 claims abstract description 4
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- UNASZPQZIFZUSI-UHFFFAOYSA-N methylidyneniobium Chemical class [Nb]#C UNASZPQZIFZUSI-UHFFFAOYSA-N 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 239000000843 powder Substances 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000005245 sintering Methods 0.000 claims description 16
- 230000007613 environmental effect Effects 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000004411 aluminium Substances 0.000 claims description 10
- 238000000498 ball milling Methods 0.000 claims description 10
- 239000008187 granular material Substances 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 9
- 229940068984 polyvinyl alcohol Drugs 0.000 claims description 9
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 9
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000470 constituent Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 claims description 6
- -1 magnesium nitride Chemical class 0.000 claims description 6
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 4
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000805 Pig iron Inorganic materials 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 3
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 235000019628 coolness Nutrition 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000009970 fire resistant effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 3
- 238000009747 press moulding Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 11
- 230000009466 transformation Effects 0.000 abstract description 2
- 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 abstract 1
- 239000002245 particle Substances 0.000 description 9
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011089 mechanical engineering Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 150000001398 aluminium Chemical class 0.000 description 1
- QNTVPKHKFIYODU-UHFFFAOYSA-N aluminum niobium Chemical compound [Al].[Nb] QNTVPKHKFIYODU-UHFFFAOYSA-N 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005551 mechanical alloying Methods 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/16—Metallic particles coated with a non-metal
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses an environment-friendly and low-production-cost alloy steel material used for an automobile. Elements of the environment-friendly and low-production-cost alloy steel material include, by weight percent, 0.3%-0.4% of carbon, 1.1%-1.3% of silicon, 3.1%-3.5% of manganese, 0.5%-0.6% of magnesium, 0.005%-0.05% of calcium, 0.02%-0.03% of strontium, 0.003%-0.05% of aluminum, 0.08%-0.1% of cobalt, smaller than or equal to 0.015% of sulfur, smaller than or equal to 0.015% of phosphorus and the balance iron and inevitable impurities. The environment-friendly and low-production-cost alloy steel material has excellent low-temperature-resistance performance, still maintains high strength, plasticity and toughness in a severe environment, is not liable to be subjected to cold brittleness low-temperature transformation and is high in fatigue resistance, durable and good in application prospect.
Description
Technical field
The present invention relates to technical field of automobile parts, particularly relate to a kind of environmental friendliness production cost low automobile alloy steel material.
Background technology
Along with gradually stepping up of people's living standard, automobile becomes the main traffic instrument of people's trip, and automotive material is typically made up of ferrous materials, the intensity of Yin Qigao and good toughness in mechanical engineering manufacturing industry in occupation of critical role.In recent years, mechanical engineering structure develops to hugeization, high parameter direction day by day, the performance of ferrous materials is proposed the highest requirement, and outer addition particle strengthening ferrous materials has all many advantages, but often to reduce plasticity and toughness as cost on the premise of increasing intensity, hardness.Qin Sen selects NbC as hardening constituent granule in " nanometer NbC/Fe (Fe3C) the composite powder technology of preparing of additional particle strengthening iron and application " literary composition, melting with casting process are added in mild steel and rich chromium cast iron solution respectively, to reach iron and steel structure refinement and the purpose of mechanical property strengthening.Niobium carbide has the performances such as high-melting-point, high rigidity, high elastic modulus, high abrasion, Thermodynamically stable, so these features become hardening constituent ideal in ferrous materials and are widely used.But how to realize particles of niobium carbide to be uniformly distributed in metallic matrix and be the primary key issue solved with the good combination of basal body interface.Author proposes composite powder and strengthens particles of niobium carbide method of dispersibility in molten steel, he proposes to add aluminium powder in niobium-graphite nodule mill body system, realize the displaced type solid solution in Nb lattice of the Al atom, (Nb-Al) C solid solution heating that ball milling is formed, obtain the niobium carbide carbide of Al doping, the real density of particles of niobium carbide is reduced to the density value close to iron and steel liquid.Additionally propose enhancing particles of niobium carbide problem of dispersibility in iron and steel liquid, realize particles of niobium carbide in-situ preparation in iron powder matrix by non-homogeneous for niobium carbide solid-solution powder adds Fe powder through heating in vacuum, this enhance niobium carbide dispersibility in iron and steel liquid.Although author each provides a kind of close to the liquid-tight angle value of iron and steel with a kind of two kinds of niobium carbide composite powders of good dispersion in iron and steel liquid, but dispersibility and density value problem can not have been resolved in steelmaking process simultaneously, limit steel industry to develop on a large scale, and aluminium powder is susceptible to oxidation, when aluminum niobium carbide is mixed in preparation, quality stability is the highest, has a strong impact on reinforced effects.
In addition metallic matrix constituent element determines the hardness of material, intensity, mechanical property and the physical property such as heat-resisting, and lubricant component can reduce or eliminate bonding and clamping stagnation, reduce surface abrasion, steadily friction process, friction component is for compensating the impact of solid lubrication constituent element and increasing resistance to sliding on the premise of not damaging friction surface, for adjusting friction factor, play a part friction, wear-resistant and anti stick.Rationally select friction component most important to raising friction material and anti-wear performance.The present invention selects have the good vanadium carbide of high-melting-point, high rigidity and the ferrum compatibility and makes anti-friction composition together with other materials and add the anti-wear performance improving steel alloy in iron and steel matrix liquid to; make it in the case of heavy duty, low speed and high-temperature vibrating; material and equipment are played the effect of protection, increases the service life.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of environmental friendliness production cost low automobile alloy steel material.
The present invention is achieved by the following technical solutions:
A kind of environmental friendliness production cost low automobile alloy steel material, prepares in accordance with the following steps:
A, melting: raise in-furnace temperature after the pig iron is fused into molten steel to 1500-1560 DEG C, add carbon, calcium-silicon, magnesium and ferromanganese, strontium, phosphorus, sulfur, cobalt and aluminum is added after insulation 20-45min, add modified niobium carbide until completely melted, liter high-temperature is to 1630-1660 DEG C, and constant temperature is kept stirring for 5-10min and obtains matrix alloy liquid；
B, refine: be transferred in refining furnace carry out deslagging process by matrix alloy liquid, process terminates to add anti-friction composition and continues melting, and anti-friction composition is 3-4 kg/tonne with the amount ratio of molten steel, carries out secondary deslagging process after it is completely melt；
C, detection: the constituent content of detection aluminium alloy, each element is by weight percentage: carbon: 0.3-0.4%, silicon: 1.1-1.3%, manganese: 3.1-3.5%, magnesium: 0.5-0.6%, calcium: 0.005-0.05%, strontium: 0.02-0.03%, aluminum: 0.003-0.05%, cobalt: 0.08-0.1%, sulfur≤0.015%, phosphorus≤0.015%, surplus is ferrum and inevitable impurity；
D, cast: be cast in fire-resistant casting mold when aluminium alloy temperature is reduced to 1450-1550 DEG C, be cooled to room temperature.
nullDescribed a kind of environmental friendliness production cost low automobile alloy steel material，In a，The preparation method of described modified niobium carbide is: by graphite powder、Niobium powder loads in ball grinder according to atomic mass 1:1，High-purity argon gas protection it is filled with after evacuation，In ratio of grinding media to material 40:1、Ball milling 6-6.5h under the rotating speed of rotating speed 280r/min，Then heating in vacuum 12-15min at 550-600 DEG C，After insulation 14-16min, natural cooling is standby，Aluminium powder is transferred in the there-necked flask with agitator after ultrasonic disperse 10min in isopropanol，It is placed in 70-75 DEG C of water bath with thermostatic control and is sufficiently stirred for，Add the polyvinylpyrrolidone of aluminium powder quality 2%，Regulation pH value is 3.9-4.0，Then a certain amount of 0.2mol/L liquor ferri trichloridi is slowly dropped in flask，Controlling to drip speed is every 3s，Reaction is aged 2-3h after terminating，Sucking filtration、Distilled water wash 2 times，Put into after drying in Muffle furnace in 450 DEG C of calcining 2h coolings，Obtain the composite granule of ferric oxide coated aluminum，It is added to this composite granule in above-mentioned niobium carbide powder again continue ball milling 6-7h，Cool down after heating in vacuum 1-2min at 550-600 DEG C after end.
Described a kind of environmental friendliness production cost low automobile alloy steel material, in b, described anti-friction composition is made up of following raw materials according: polyvinyl alcohol 0.3-0.4, zirconium oxide 0.3-0.5, vanadium carbide 3-4, tungsten disulfide 0.9-1.2, magnesium nitride 0.5-0.8；By polyvinyl alcohol by appropriate deionized water stirring and dissolving, by zirconium oxide, tungsten disulfide, vanadium carbide, magnesium nitride mixing and ball milling 4-5h in batch mixer, it is added to after mix homogeneously in poly-vinyl alcohol solution mix thoroughly and dry, then cold-press moulding under the pressure of 500-600MPa, pressed compact is placed in pressurized sintering furnace and carries out pressure sintering, sintering temperature is 920-940 DEG C, and sintering pressure is 2MPa, pulverizes after sintering 3h.
Described a kind of environmental friendliness production cost low automobile alloy steel material, described aluminum and iron sesquioxide mass ratio are 1:0.7-0.75, and the iron sesquioxide aluminum composite granule of addition and the weight ratio of niobium carbide are 1:41-43.
The invention have the advantage that the present invention utilizes ferric chloride hydrolysis to prepare ferric oxide coated aluminum powder, it is effectively prevented aluminium powder to aoxidize, and improve the dispersion problem of aluminium powder, modified aluminium powder is mixed in particles of niobium carbide by recycling mechanical alloying, prepare close to molten steel density value, and in molten steel dispersibility, the particles of niobium carbide that wettability is good, improve the intensity of steel, hardness, wear-resistant, shock resistance, the performance such as corrosion-resistant, vanadium carbide and other materials is also used to add in iron and steel liquid after pressure sintering is broken, improve the contact area with iron and steel, wettability, dispersibility and reactivity, steel are made to have excellent wearability, heat-resisting quantity and electric erosion resistance etc.；Alloy steel products of the present invention has the resistance to low temperature of excellence, the most still keeps higher intensity, plasticity and toughness, is not susceptible to cold short low-temperature transformation, and fatigue resistance is strong, and durable in use, application prospect is good.
Detailed description of the invention
A kind of environmental friendliness production cost low automobile alloy steel material, prepares in accordance with the following steps:
A, melting: raise in-furnace temperature after the pig iron is fused into molten steel to 1500 DEG C, add carbon, calcium-silicon, magnesium and ferromanganese, strontium, phosphorus, sulfur, cobalt and aluminum is added after insulation 20min, add modified niobium carbide until completely melted, liter high-temperature is to 1630 DEG C, and constant temperature is kept stirring for 5min and obtains matrix alloy liquid；
B, refine: be transferred in refining furnace carry out deslagging process by matrix alloy liquid, process terminates to add anti-friction composition and continues melting, and anti-friction composition is 3 kgs/tonne with the amount ratio of molten steel, carries out secondary deslagging process after it is completely melt；
C, detection: the constituent content of detection aluminium alloy, each element is by weight percentage: carbon: 0.3%, silicon: 1.1%, manganese: 3.1%, magnesium: 0.5%, calcium: 0.005%, strontium: 0.02%, aluminum: 0.003%, cobalt: 0.08%, sulfur≤0.015%, phosphorus≤0.015%, surplus is ferrum and inevitable impurity；
D, cast: be cast in fire-resistant casting mold when aluminium alloy temperature is reduced to 1450 DEG C, be cooled to room temperature.
nullDescribed a kind of environmental friendliness production cost low automobile alloy steel material，In a，The preparation method of described modified niobium carbide is: by graphite powder、Niobium powder loads in ball grinder according to atomic mass 1:1，High-purity argon gas protection it is filled with after evacuation，In ratio of grinding media to material 40:1、Ball milling 6h under the rotating speed of rotating speed 280r/min，Then heating in vacuum 12min at 550 DEG C，After insulation 14min, natural cooling is standby，Aluminium powder is transferred in the there-necked flask with agitator after ultrasonic disperse 10min in isopropanol，It is placed in 70 DEG C of waters bath with thermostatic control and is sufficiently stirred for，Add the polyvinylpyrrolidone of aluminium powder quality 2%，Regulation pH value is 3.9，Then a certain amount of 0.2mol/L liquor ferri trichloridi is slowly dropped in flask，Controlling to drip speed is every 3s，Reaction is aged 2h after terminating，Sucking filtration、Distilled water wash 2 times，Put into after drying in Muffle furnace in 450 DEG C of calcining 2h coolings，Obtain the composite granule of ferric oxide coated aluminum，It is added to this composite granule in above-mentioned niobium carbide powder again continue ball milling 6h，Cool down after heating in vacuum 1min at 550 DEG C after end.
Described a kind of environmental friendliness production cost low automobile alloy steel material, in b, described anti-friction composition is made up of following raw materials according: polyvinyl alcohol 0.3, zirconium oxide 0.3, vanadium carbide 3, tungsten disulfide 0.9, magnesium nitride 0.5；By polyvinyl alcohol by appropriate deionized water stirring and dissolving, by zirconium oxide, tungsten disulfide, vanadium carbide, magnesium nitride mixing and ball milling 4h in batch mixer, it is added to after mix homogeneously in poly-vinyl alcohol solution mix thoroughly and dry, then cold-press moulding under the pressure of 500MPa, pressed compact is placed in pressurized sintering furnace and carries out pressure sintering, sintering temperature is 920 DEG C, and sintering pressure is 2MPa, pulverizes after sintering 3h.
Described a kind of environmental friendliness production cost low automobile alloy steel material, described aluminum and iron sesquioxide mass ratio are 1:0.7, and the iron sesquioxide aluminum composite granule of addition and the weight ratio of niobium carbide are 1:41.
The steel preparing embodiment carry out performance test:
Yield strength >=543MPa；Elongation percentage >=13.7%；Tensile strength >=557MPa；Impact strength >=46J；Fracture toughness >=35.8MPa m1/2；Wear extent (under 40N load)≤0.06g.
Claims (4)
1. an environmental friendliness production cost low automobile alloy steel material, it is characterised in that prepare in accordance with the following steps:
A, melting: raise in-furnace temperature after the pig iron is fused into molten steel to 1500-1560 DEG C, add carbon, calcium-silicon, magnesium and ferromanganese, strontium, phosphorus, sulfur, cobalt and aluminum is added after insulation 20-45min, add modified niobium carbide until completely melted, liter high-temperature is to 1630-1660 DEG C, and constant temperature is kept stirring for 5-10min and obtains matrix alloy liquid；
B, refine: be transferred in refining furnace carry out deslagging process by matrix alloy liquid, process terminates to add anti-friction composition and continues melting, and anti-friction composition is 3-4 kg/tonne with the amount ratio of molten steel, carries out secondary deslagging process after it is completely melt；
C, detection: the constituent content of detection aluminium alloy, each element is by weight percentage: carbon: 0.3-0.4%, silicon: 1.1-1.3%, manganese: 3.1-3.5%, magnesium: 0.5-0.6%, calcium: 0.005-0.05%, strontium: 0.02-0.03%, aluminum: 0.003-0.05%, cobalt: 0.08-0.1%, sulfur≤0.015%, phosphorus≤0.015%, surplus is ferrum and inevitable impurity；
D, cast: be cast in fire-resistant casting mold when aluminium alloy temperature is reduced to 1450-1550 DEG C, be cooled to room temperature.
nullA kind of environmental friendliness production cost low automobile alloy steel material，It is characterized in that，In a，The preparation method of described modified niobium carbide is: by graphite powder、Niobium powder loads in ball grinder according to atomic mass 1:1，High-purity argon gas protection it is filled with after evacuation，In ratio of grinding media to material 40:1、Ball milling 6-6.5h under the rotating speed of rotating speed 280r/min，Then heating in vacuum 12-15min at 550-600 DEG C，After insulation 14-16min, natural cooling is standby，Aluminium powder is transferred in the there-necked flask with agitator after ultrasonic disperse 10min in isopropanol，It is placed in 70-75 DEG C of water bath with thermostatic control and is sufficiently stirred for，Add the polyvinylpyrrolidone of aluminium powder quality 2%，Regulation pH value is 3.9-4.0，Then a certain amount of 0.2mol/L liquor ferri trichloridi is slowly dropped in flask，Controlling to drip speed is every 3s，Reaction is aged 2-3h after terminating，Sucking filtration、Distilled water wash 2 times，Put into after drying in Muffle furnace in 450 DEG C of calcining 2h coolings，Obtain the composite granule of ferric oxide coated aluminum，It is added to this composite granule in above-mentioned niobium carbide powder again continue ball milling 6-7h，Cool down after heating in vacuum 1-2min at 550-600 DEG C after end.
A kind of environmental friendliness production cost low automobile alloy steel material, it is characterized in that, in b, described anti-friction composition is made up of following raw materials according: polyvinyl alcohol 0.3-0.4, zirconium oxide 0.3-0.5, vanadium carbide 3-4, tungsten disulfide 0.9-1.2, magnesium nitride 0.5-0.8；By polyvinyl alcohol by appropriate deionized water stirring and dissolving, by zirconium oxide, tungsten disulfide, vanadium carbide, magnesium nitride mixing and ball milling 4-5h in batch mixer, it is added to after mix homogeneously in poly-vinyl alcohol solution mix thoroughly and dry, then cold-press moulding under the pressure of 500-600MPa, pressed compact is placed in pressurized sintering furnace and carries out pressure sintering, sintering temperature is 920-940 DEG C, and sintering pressure is 2MPa, pulverizes after sintering 3h.
A kind of environmental friendliness production cost low automobile alloy steel material, it is characterised in that described aluminum and iron sesquioxide mass ratio are 1:0.7-0.75, and the iron sesquioxide aluminum composite granule of addition and the weight ratio of niobium carbide are 1:41-43.
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| JP2005139485A (en) * | 2003-11-05 | 2005-06-02 | Nippon Steel Corp | Steel sheet for hot forming |
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| JP2005139485A (en) * | 2003-11-05 | 2005-06-02 | Nippon Steel Corp | Steel sheet for hot forming |
| CN102470502A (en) * | 2010-03-30 | 2012-05-23 | 新日本制铁株式会社 | Cutting method of steel for machine structure |
| CN103014819A (en) * | 2011-09-27 | 2013-04-03 | 肖云捷 | Wearable compound layer material for machine parts and manufacturing method and equipment thereof |
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