CN1380436A - High vanadium high-wear-resistant alloy and its preparation method - Google Patents
High vanadium high-wear-resistant alloy and its preparation method Download PDFInfo
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- CN1380436A CN1380436A CN 02113061 CN02113061A CN1380436A CN 1380436 A CN1380436 A CN 1380436A CN 02113061 CN02113061 CN 02113061 CN 02113061 A CN02113061 A CN 02113061A CN 1380436 A CN1380436 A CN 1380436A
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- 239000000956 alloy Substances 0.000 title claims abstract description 35
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 32
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000003723 Smelting Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004411 aluminium Substances 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 7
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 229910000604 Ferrochrome Inorganic materials 0.000 claims abstract description 4
- 229910000616 Ferromanganese Inorganic materials 0.000 claims abstract description 4
- 229910000805 Pig iron Inorganic materials 0.000 claims abstract description 4
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims description 13
- 239000004615 ingredient Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 238000010792 warming Methods 0.000 claims description 5
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 3
- 108010038629 Molybdoferredoxin Proteins 0.000 claims description 3
- HBELESVMOSDEOV-UHFFFAOYSA-N [Fe].[Mo] Chemical compound [Fe].[Mo] HBELESVMOSDEOV-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000005496 tempering Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 229910000628 Ferrovanadium Inorganic materials 0.000 abstract 2
- 229910001309 Ferromolybdenum Inorganic materials 0.000 abstract 1
- 229910001200 Ferrotitanium Inorganic materials 0.000 abstract 1
- -1 ferrosilicium Chemical compound 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 239000011651 chromium Substances 0.000 description 34
- 239000000463 material Substances 0.000 description 27
- 229910052804 chromium Inorganic materials 0.000 description 22
- 229910001037 White iron Inorganic materials 0.000 description 15
- 239000010936 titanium Substances 0.000 description 10
- 239000011159 matrix material Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000011572 manganese Substances 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 229910000734 martensite Inorganic materials 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000010791 quenching Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000012467 final product Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 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 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 238000012913 prioritisation Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 235000007516 Chrysanthemum Nutrition 0.000 description 1
- 244000189548 Chrysanthemum x morifolium Species 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000691 Re alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011044 quartzite Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000009827 uniform distribution 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
The present invention relates to a high-vanadium high-wearability alloy, its composition contains: (wt%) C:2.0-3.2; Si:1.0-1.5; Cr: 7.0-12.0; Mn: 0.8-1.2; V: 8.0-15.0; S is less than or equal to 0.05; Mo:0.8-1.5; P is less than or equal to 0.07; and the rest is Fe and impurity, in its optimum scheme Re: 0.03-0.05 and Ti: 0-0.5 also can be added. Its preparation method includes the following steps: placing pig iron, waste steel, ferrochrome and ferromolybdenum into smelting furnace, heating and melting; placing ferrovanadium in the heating furnace, preheating to about 500 deg.C; heating molten iron to about, 500 deg.c in smelting furnace, deoxidizing inserted aluminium, adding ferrovanadium, ferrosilicium, ferromanganese, rare earth and ferrotitanium, heating to 1490-1520 deg.C, pouring temp. is 1400-1420 temp., then heating to 500-550 deg.c and tempering.
Description
Technical field
The invention belongs to metal material field, relate to a kind of high vanadium wear resistant alloy that is applicable under the heavily stressed strong abrasive wear working condition, and the preparation method of this alloy.
Background technology
Wearing and tearing are one of main modes of material failure, especially in the mine, industry such as building materials, electric power, owing to there is the process in small, broken bits of a large amount of materials (as various metallic ores, brown corundum, cement clinker etc.), grinding element such as tup (bar), liner plate etc. to contact with it produce strong wear, consume a large amount of metallic substance, influenced the operational efficiency of main frame.For satisfying the needs of different wear working conditions, multiple high-abrasive material has appearred, and as high mangaenese steel, low alloy steel, white cast iron etc., wherein high-chromium white cast iron is one of the most excellent material of present wear resistance, is used widely.But under some heavily stressed strong abrasive wear working conditions, the wear resistance of rich chromium cast iron, shock-resistance still are difficult to satisfy actual needs, and this characteristics of organizational structure with high-chromium white cast iron is relevant.The metallographic structure of high-chromium white cast iron (quenching attitude) is generally M
7C
3Type carbide+martensitic matrix, M
7C
3The microhardness Hv1200 of type carbide～1800, volume fraction about 30%, for some hard grind material such as quartzite (Hv1000～1300), corundum (Hv1800), its microhardness is also undesirable, what is more important M
7C
3The pattern of type carbide is stick or chrysanthemum shape, and is although its distribution is discontinuous netted, still very big to the effect of isolating of matrix; greatly reduce the impelling strength of material; and the strip and block carbide very easily bursts apart in matrix wearing and tearing back, loses the provide protection to matrix, and wearing and tearing are accelerated.Therefore one of the important means that improves the wear resistance of material is to improve carbide hardness, improves carbide pattern and distribution.The patent No. is that the document of CN1264749A discloses a kind of high-speed antiwear cast steel, and its concrete chemical ingredients (weight percentage) is as follows: C1.8～4.2%, W2.0～12.0%, Mo3.0～12.0%, Cr4.0～15.0%, Co0～10.0%, V2.5～10.0%, Nb0.3～2.5%, Si0.5～1.5%, Mn0.3～0.8%, Al0.2～0.6%, NO.02～0.1%, S≤0.03%, P≤0.03%, all the other are iron.The wear resistance thermotolerance higher chromium white cast iron of this material is good, but because it contains more valuable alloying element, the cost height, and technique controlling difficulty is big, need take continuous Quench measure, be equipped with quench hot (1000～1150 ℃) simultaneously, three high temperings (450～580 ℃), this brings very big difficulty to actual production, is difficult to apply.The patent No. is that the document of CN1039267A discloses a kind of antiwear high-chromium cast iron, its concrete chemical ingredients (weight percentage) is as follows: C2.9～3.2%, Mo1.2～2.0%, Cr18.0～20.0%, V4.0～5.0%, Si0.4～0.8%, Mn0.4～1.0%, Cu0.8～1.2%, Re0.05 ~ 0.5%, S≤0.05%, P≤0.08%, all the other are iron.Because the adding of V has formed high rigidity VC carbide, has improved the material wear resistance, owing to the effect of V, making material as cast condition matrix is martensite substantially simultaneously, can save quench hot and handle, and only needs average tempering to get final product.But this material composition is except that V, all the other are the same with high-chromium white cast iron, thereby the tissue signature of material and performance characteristics are also basic the same with high-chromium white cast iron, though wear resistance improves about 30%, but cost is also grown simultaneously, its ratio of performance to price is unlike the high-chromium white cast iron height, in the marketing application difficult.
Summary of the invention
The purpose of this invention is to provide a kind of high vanadium high-wear-resistant alloy chemical ingredients, have wear resistance and the impelling strength more much higher than high-chromium white cast iron; The present invention simultaneously will provide the preparation method of this high vanadium high-wear-resistant alloy.
The present invention mainly is with high rigidity, is the alternative soft M of carbide VC that the diffusing particle shape distributes
7C
3The type carbide increases substantially impelling strength when improving material wear ability.Its wear resistance is three times of high-chromium white cast iron, and impelling strength is its twice, and the preparation technology of this alloy is easy to the control grasp.The chemical ingredients of high vanadium high-wear-resistant alloy of the present invention (weight percentage) is as follows:
C：2.0～3.2％???????????????????????????Si：1.0～1.5％
Cr：7.0～15.0％?????????????????????????Mn：0.8～1.2％
V：8.0～16.0％??????????????????????????Mo：0.8～1.5％
All the other are Fe and unavoidable impurities element.
Also can add following chemical ingredients (weight percentage) in the chemical ingredients of above-mentioned high vanadium high-wear-resistant alloy:
Re：0.03~0.05％?????????????????????????Ti：0～0.5％
The prioritization scheme of foregoing invention is: wherein
S：≤0.05％?????????????????????????????P：≤0.07％
High vanadium high-wear-resistant alloy material of the present invention can be produced with electric furnace, and its manufacturing technology steps is:
The pig iron, steel scrap, ferrochrome, molybdenum-iron are put into smelting furnace internal heating fusing, vanadium iron is placed on is preheated in the process furnace about 500 ℃;
Molten iron in the smelting furnace is warming up to about 1500 ℃, adds vanadium iron after the slotting abundant deoxidation of aluminium in batches.Add in the 5min before ferrosilicon, ferromanganese are come out of the stove, rare earth, ferrotianium adopt the method that pours in the bag to add;
Come out of the stove after inserting aluminium deoxidation once more when temperature rises to 1490～1520 ℃;
1400～1420 ℃ of teeming temperatures.
The prioritization scheme of above-mentioned technology is to increase following steps;
The processing of foundry goods average tempering is got final product.
The chemical composition design of high vanadium high-wear-resistant alloy material of the present invention is according to as follows: studies show that: vanadium is a kind of utmost point intensive carbide forming element, and formed VC carbide hardness (Hv2800) is more than Cr
7C
3Type carbide hardness (Hv1200～1800) height.In chromium cast iron contained, a spot of vanadium (＜0.5%) just has the refining eutectic tissue, changes eutectic carbides and distributes and pattern, produces effects such as dispersion-strengthened.Under the as cast condition cooling conditions, it can make austenite separate out proeutectoid carbide, reduces the content of carbon and chromium, improves the temperature that Ms is ordered, thereby helps martensitic transformation, improves the material antiwear property.Occur white bright high vanadium carbide particle when content of vanadium increases to 3.7%, proeutectoid carbide is separated out in the matrix disperse, has obviously reduced austenitic stability, makes the part matrix be transformed into martensite.When content of vanadium surpassed 4.0%, the proeutectoid carbide quantity of high vanadium carbide particle and disperse obviously increased, and the matrix fundamental transformation becomes martensite.Because VC carbide hardness is high, and is the diffusing particle shape and distributes, very little to the effect of isolating of matrix, thereby the wear resistance of high vanadium wear resistant alloy, shock-resistance are all far above high-chromium white cast iron.The chemical ingredients of high vanadium high-wear-resistant alloy material of the present invention limits content range and the reasons are as follows:
Vanadium: content is more than 8.0%.Content is low excessively, and the carbide VC amount of being separated out is few, and the performance of material still can be with Cr
7C
3Type carbide characteristic is main, has only amount as carbide VC to reach 10% when above, and highly significant is just understood in its effect.Consider that its high-content of comprehensive cost is no more than 16.0%;
Carbon: carbon has material impact to the wear resistance and the impelling strength of material.The carbon height is the hardness height then, and wear resistance is good, but impelling strength is low.Take into account and consider that the carbon amount is controlled at below 3.2%;
Chromium: have excellent abrasive for guaranteeing material, its carbide content should be in suitable scope, and general volume fraction ratio is controlled at 20～30%.Chromium also has very strong bonding force as assisted and strengthened element and carbon, formed Cr
7C
3The type carbide has wear resistance preferably, and is interrupted shape distribution.The content of chromium is relevant with carbon content, i.e. the Cr/C value.Consider material carbide total content scope, chromium content is controlled at below 15.0%, and the Cr/C value is controlled at more than 3.5;
Molybdenum: can improve material wear ability and mechanical property, because molybdenum can generate the tiny dispersive carbide Mo of indissoluble in cast iron
2C, it is included in the carbide, remarkable inhibition perlitic transformation is arranged and improve the hardening capacity effect.But too high levels can make the brittle carbides amount increase, and improves material cost, so its content is controlled at below 1.5%;
Silicon: silicon can produce the solution strengthening effect, promotes Cr
7C
3The generation of type carbide increases carbide hardness, improves material wear ability.The avidity of silicon and oxygen is strong simultaneously, help the molten steel deoxidization degasification, and improve the casting manufacturability of material, but too high silicon content will increase the fragility of material.Thereby its high-content is controlled in 1.5%;
Manganese: mainly play the deoxidation outgassing, too high levels can produce the abundant residues austenite, is unfavorable for that material wear ability improves, and should be controlled at below 1.2%.
Rare earth (Re): rare earth can crystal grain thinning, purify crystal boundary, improve carbide morphology and distribution, impels carbide to be isolated shape uniform distribution, and is all helpful to the raising of toughness, bending strength, hardness.When add-on DeGrain after a little while, add-on is degrade performance on the contrary too much.The residual quantity of suitable rare earth is 0.03～0.05%.
Titanium (Ti): titanium energy crystal grain thinning, raising grain coarsening temperature.Titanium and carbon have very strong avidity, can form to be the TiC hard compounds that highly dispersed distributes, and increase nucleus quantity, crystal grain thinning, improving wear resistance simultaneously, significantly improve the material obdurability.Under the very high situation of content of vanadium, the effect that increases titanium content is not remarkable, increases material cost on the contrary, so its content gets final product with interior 0.5%.
High vanadium high-wear-resistant alloy of the present invention is compared with prior art (KmTBCr20Mo, CN1039267A), has reduced M
7C
3The type carbide content has improved its distributional pattern, rolled up the hardness height simultaneously, be the carbide VC that the diffusing particle shape distributes, thereby alloy wear-resisting of the present invention, impelling strength is very excellent.Its wear resistance is more than three times of high-chromium white cast iron (KmTBCr20Mo), and impelling strength is its twice, and the ratio of performance to price improves more than 50%.It is low that the present invention simultaneously also has thermal treatment temp, and technology is easy, saves the characteristics of energy consumption, is that a kind of scope of application is more extensive, the high-performance abrasion resistance material.
Description of drawings
Fig. 1 is the metallographic structure figure of alloy of the present invention;
Fig. 2 is the metallographic structure figure of high-chromium white cast iron.
Embodiment
Embodiment 1: high vanadium high-wear-resistant alloy, according to following weight percentage, in medium-frequency induction furnace melting three stove alloys, its processing step is: the pig iron, steel scrap, ferrochrome, molybdenum-iron are put into smelting furnace internal heating fusing, vanadium iron is placed on is preheated in the process furnace about 500 ℃; Molten iron in the smelting furnace is warming up to about 1500 ℃, adds vanadium iron after the slotting abundant deoxidation of aluminium in batches.Add in the 5min before ferrosilicon, ferromanganese are come out of the stove, rare earth, ferrotianium adopt the method that pours in the bag to add; Come out of the stove after inserting aluminium deoxidation once more when temperature rises to 1490～1520 ℃; Use sand mold casting, 1400～1420 ℃ of teeming temperatures; LPC1500-III set hammer head and wedge shape test block have been poured into a mould.After the foundry goods cooling, spruing, cleaning overlap, burr; Foundry goods is warming up to 500～550 ℃ of temper to get final product.The cutting of wedge shape test block line, ground finish are become 10 * 10 * 55mm sample.In order to contrast, poured into a mould LPC1500-III set hammer head and wedge shape test block equally with the KmTBCr20Mo high-chromium white cast iron, become same size sample to compare through 980 ℃ of quenchings, 200 ℃ of temper post-treatment and detect and the installation examination.
Embodiment 2, embodiment 3 are substantially the same manner as Example 1, and the chemical ingredients of three embodiment sees Table 1, and mechanical property and wear resisting property see Table 2.Wearing test is to carry out on ML-10 type pin disc type wear testing machine, and load 1300g, abrasive material are 150
#Al
2O
3Waterproof abrasive paper, wearing-in period 30min.The installation result of appraisal see Table three.Fig. 1 and Fig. 2 are seen in the metallographic structure of alloy of the present invention and high-chromium white cast iron.Table one chemical ingredients
Table two mechanical property and wear resistance
The table three installation result of appraisal
Embodiment 4, and is substantially the same manner as Example 1, but component ratio is as follows:
| Alloy designations | Chemical ingredients (weight percentage) | |||||||
| ?C | ?Si | ?Mn | ?Cr | ?V | ?Mo | ?Ti | ?Re | |
| Alloy of the present invention | ?2.86 | ?1.20 | ?0.98 | ?11.50 | ?11.60 | ?0.98 | ??- | ??- |
| ?2.75 | ?1.24 | ?1.20 | ?9.50 | ?11.20 | ?1.00 | ?0.12 | ?0.04 | |
| ?2.92 | ?1.18 | ?1.01 | ?11.80 | ?12.50 | ?0.92 | ?0.13 | ?0.038 | |
| KmTBCr20Mo | ?3.12 | ?0.80 | ?0.92 | ?19.60 | ??- | ?1.60 | ??- | ??- |
| Alloy designations | Hardness HRC | Impelling strength α K(J/cm 2) | Abrasion (mg) |
| Alloy of the present invention | ?62.0 | ?9.60 | ?22.4 |
| ?60.0 | ?8.30 | ?27.5 | |
| ?62.7 | ?9.00 | ?22.3 | |
| KmTBCr20Mo | ?61.0 | ?4.20 | ?86.0 |
| Alloy designations | Broken tonnage (ten thousand tons) |
| Alloy of the present invention | ?2.81 |
| ?2.60 | |
| ?2.88 | |
| KmTBCr20Mo | ?0.88 |
C：2.0％??????????????????????????Si：1.0％
Cr：7.0％?????????????????????????Mn：0.8％
V：8.0％??????????????????????????S：≤0.05％
Mo:0.8% P :≤0.07% all the other be Fe and unavoidable impurities element.Embodiment 5, and is substantially the same manner as Example 1, but component ratio is as follows:
C：3.2％??????????????????????Si：1.5％
Cr：15.0％????????????????????Mn：1.2％
V：16.0％?????????????????????S：≤0.05％
Mo：1.5％?????????????????????P：≤0.07％
All the other are Fe and unavoidable impurities element.Embodiment 6, and is substantially the same manner as Example 1, but also has in the component:
Re:0.04% Ti:0.25% embodiment 7, substantially the same manner as Example 1, but component ratio is as follows:
C：2.5％??????????????????????Si：1.3％
Cr：10.0％????????????????????Mn：1.0％
V：13.0％?????????????????????S：≤0.05％
Mo：1.5％?????????????????????P：≤0.07％
Re：0.04％????????????????????Ti：0.25％
All the other are Fe and unavoidable impurities element.Embodiment 8, and is substantially the same manner as Example 1, but component ratio is as follows:
C：2.7％??????????????????????Si：1.0％
Cr：11.0％????????????????????Mn：1.0％
V：12.0％?????????????????????S：≤0.05％
Mo：1.2％?????????????????????P：≤0.07％
All the other are Fe and unavoidable impurities element for Re:0.035% Ti:0.30%.
Claims (8)
1, a kind of high vanadium high-wear-resistant alloy is characterized in that the weight percentage of the chemical ingredients of high vanadium high-wear-resistant alloy is:
C：2.0～3.2％???????????????????????Si：1.0～1.5％
Cr：7.0～15.0％?????????????????????Mn：0.8～1.2％
V：8.0～16.0％??????????????????????Mo：0.8～1.5％
All the other are Fe and unavoidable impurities element.
2,, it is characterized in that also adding in the above-mentioned alloy composition following chemical components according to the described high vanadium high-wear-resistant alloy of claim 1:
Re：0.03~0.05％?????????????????????Ti：0～0.5％。
3, according to the described high vanadium high-wear-resistant alloy of claim 1, it is characterized in that: the recommendation ratio of each component is:
C：2.86％???????????????????????????Si：1.20％
Cr：11.50％?????????????????????????Mn：0.98％
V：11.60％??????????????????????????Mo：0.98％。
4, according to the described high vanadium high-wear-resistant alloy of claim 2, it is characterized in that: the recommendation ratio of each component is:
C：2.75％???????????????????????????Si：1.24％
Cr：9.50％??????????????????????????Mn：1.20％
V：11.20％??????????????????????????Mo：1.00％
Ti：0.12％??????????????????????????Re：0.04％。
5, according to the described high vanadium high-wear-resistant alloy of claim 2, it is characterized in that: the recommendation ratio of each component is:
C：2.92％???????????????????????????Si：1.18％
Cr：11.80％?????????????????????????Mn：1.01％
V：12.50％??????????????????????????Mo：0.92％
Ti：0.13％??????????????????????????Re：0.038％。
6, according to the described high vanadium high-wear-resistant alloy of one of claim 1 ~ 5, it is characterized in that: S: P≤0.05% :≤0.07% wherein.
7, the preparation method of the described high vanadium high-wear-resistant alloy of one of a kind of claim 1 ~ 6, its processing step is:
The pig iron, steel scrap, ferrochrome, molybdenum-iron are put into smelting furnace internal heating fusing, vanadium iron is placed on is preheated in the process furnace about 500 ℃
Molten iron in the smelting furnace is warming up to about 1500 ℃, adds vanadium iron after the slotting abundant deoxidation of aluminium in batches, add in the 5min before ferrosilicon, ferromanganese are come out of the stove, pour method in rare earth, ferrotianium adopt and wrap and add
Come out of the stove after inserting aluminium deoxidation once more when temperature rises to 1490～1520 ℃
1400～1420 ℃ of teeming temperatures.
8, according to the preparation method of the described high vanadium high-wear-resistant alloy of claim 7, it is characterized in that: also be provided with following steps:
After the foundry goods cooling, spruing, cleaning overlap, burr
Foundry goods is warming up to 500～550 ℃ of temper.
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