CN1036379C - Wear-resistant surface composite material and manufacturing process thereof - Google Patents
Wear-resistant surface composite material and manufacturing process thereof Download PDFInfo
- Publication number
- CN1036379C CN1036379C CN 93100863 CN93100863A CN1036379C CN 1036379 C CN1036379 C CN 1036379C CN 93100863 CN93100863 CN 93100863 CN 93100863 A CN93100863 A CN 93100863A CN 1036379 C CN1036379 C CN 1036379C
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- Prior art keywords
- tungsten carbide
- wear
- rare earth
- alloy
- casting
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- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000005266 casting Methods 0.000 claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims abstract description 10
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 9
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910000604 Ferrochrome Inorganic materials 0.000 claims abstract description 8
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 5
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 20
- MEOSMFUUJVIIKB-UHFFFAOYSA-N [W].[C] Chemical compound [W].[C] MEOSMFUUJVIIKB-UHFFFAOYSA-N 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052702 rhenium Inorganic materials 0.000 claims description 5
- 239000010953 base metal Substances 0.000 claims description 2
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 15
- 239000000956 alloy Substances 0.000 abstract description 15
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 11
- 150000002910 rare earth metals Chemical class 0.000 abstract description 10
- 239000011651 chromium Substances 0.000 abstract description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 7
- 239000011572 manganese Substances 0.000 abstract description 5
- 229910000617 Mangalloy Inorganic materials 0.000 abstract description 4
- 230000008595 infiltration Effects 0.000 abstract description 4
- 238000001764 infiltration Methods 0.000 abstract description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 3
- 239000010937 tungsten Substances 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 229910000734 martensite Inorganic materials 0.000 abstract description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 2
- 238000002360 preparation method Methods 0.000 abstract 1
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 238000005215 recombination Methods 0.000 description 4
- 230000006798 recombination Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 229910001037 White iron Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000006071 cream Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 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 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
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- Powder Metallurgy (AREA)
Abstract
The invention relates to a composite material for forming a wear-resistant surface on the surface of austenitic manganese steel and a manufacturing process thereof. The method is characterized in that high-carbon ferrochrome and rare earth alloy are used as additives for improving infiltration property and matrix performance, tungsten carbide particles are compositely cast on the surface of manganese steel in austenite, and a surface composite layer with excellent wear resistance is formed, wherein the cast tungsten carbide particles are used as a wear-resistant backbone phase, and alloy carbide and martensite containing chromium, tungsten, manganese and rare earth elements are used as matrixes. The preparation method comprises the steps of uniformly mixing cast tungsten carbide particles, high-carbon ferrochrome and rare earth alloy, and pouring medium manganese molten steel with the superheat degree of 50-100 ℃ into a casting mold. The process is simple and low in cost.
Description
The present invention relates to form abrasive-resistant composite surface material and manufacture craft thereof on austenite medium managese steel surface.
Wearing and tearing are one of three big forms of material failure, and a large amount of parts all lost efficacy because of wearing and tearing.Therefore, have a great economic significance the service life of raising wearing piece.
Many wearing pieces in actual production, on the one hand, the surface abrasion certain thickness just causes scrapping, thereby needs the surface to have good wear resistance; On the other hand, be to guarantee the parts safe and reliable operation, intensity, toughness and the wearability of matrix material also had higher requirement.Therefore, if the pottery money material of high rigidity, high-wearing feature is compounded in the medium managese steel surface of high strength, high tenacity, make composite surface material, and make and form a large amount of alloy carbides in the matrix of this surface composite layer, ceramic particle is produced strong support, then can give full play to the wear-resistant key effect of ceramic particle, the problems referred to above just can be resolved.
Cast tungsten carbide (WC-W
2C) hardness is very high, reaches HV=2500-3000.Cast tungsten carbide is compounded in metal material surface, can significantly improves case hardness and wearability.Developed composite surface material at present both at home and abroad at cast iron or structural steel surface recombination casting carbon tungsten carbide particle.But because the obdurability of cast iron is lower, this composite surface material can only be applied to the less demanding operating mode of parts obdurability; And no matter be to make pottery in Cast Iron Surface or in the structural steel surface recombination to support particle, in case after the composite bed wearing and tearing, the rate of depreciation of whole part will sharply increase, and bring dangerous to production.
The manufacture craft of casting carbon tungsten carbide particle composite surface material mainly contains following three kinds at present: 1. surface overlaying; 2. vacuum suction casting technique; 3. cream piece casting infiltration.Method 1 needs casting, twice moulding of weldering, the technology more complicated, and cost is higher; Method 2 needs complicated process equipment, and technology is more complicated also, and method 3 is because employing binding agent and flux are made the cream piece, and its outstanding shortcoming is easily to produce pore and be mingled with (slag), reduces mechanical performance and anti-wear performance.
The objective of the invention is to overcome the above-mentioned shortcoming that existing metal surface composite and manufacture craft thereof exist, provide a kind of and make that surface abrasion resistance is very excellent and whole to have good obdurability and than the wearing face material and the process thereof of high-wearing feature.
Realize that the concrete technical scheme of above-mentioned purpose is described below: a kind of abrasive-resistant composite surface material, its special character is that base metal is austenite medium managese steel (Mn:5-9wt%, C:0.7-1.2wt%, Re:0-0.2wt%), in its surface recombination the tungsten carbide particle of 40-80wt% is arranged, and between tungsten carbide particle, be formed with the multi-element alloyed matrix of Cr, Mn, W, C, Re.Be exactly as the additive that improves infiltration property and substrate performance specifically with high carbon ferro-chrome and rare earth alloy, at austenite medium managese steel surface recombination casting carbon tungsten carbide particle, formation is wear-resistant key phase with casting carbon tungsten carbide particle, is the very excellent surface composite layer of wearability of matrix with alloy carbide and the martensite that contains chromium, tungsten, manganese, rare earth element.
Be used to make the process of abrasive-resistant composite surface material, be with the 20-180 purpose casting carbon tungsten carbide particle of 40-80wt%, the 20-80 height of eye carbon ferrochrome of 15-60wt%, evenly mix being placed on the casting mold bottom, the cast degree of superheat is 50-100 ℃ a medium managese steel in casting mold then, and coagulation forming.Molten metal infiltrates to the mangcorn bed of material under the effect of dynamic pressure, static pressure and capillary force, make dissolving of ferrochrome and rare earth alloy or fusing simultaneously, the formation casting carbon tungsten carbide particle is uniformly distributed in the alloy manganese steel that contains chromium, carbon, manganese, tungsten, rare earth and is the excellent metallurgical combination.Adopt this process without binding agent, flux and optional equipment, but adopt common clay sand mold and carbon dioxide hardening sand mold.
Abrasive-resistant composite surface material provided by the present invention can add the 0-0.2wt% rare earth alloy, if contain rare earth in the molten steel, also can not add rare earth alloy.
The purpose that adds high carbon ferro-chrome is to form the alloy substrate with higher hardness and wearability that contains chromium, and in matrix, distribute and contain the alloy carbide of elements such as chromium, casting carbon tungsten carbide particle is produced strong support, to give full play to its wear-resistant key effect; In pellet, add in rare earth alloy or the manganese steel and contain rare earth, the one, the fusing point of alloy liquid is beneficial to infiltration in the reduction composite bed, and the 2nd, improve solidified structure, the alloy carbide that refinement generates is to improve the combination property of matrix.
Test shows: composite surface material of the present invention has very excellent abrasive, on 220 orders-500 order SiC sand paper, cut mill and decrease test, when load is 31N, its wearability (calculating by wear weight loss) increases substantially than white cast-iron and rich chromium cast iron, and maximum can reach 18.4 times and 10.19 times respectively.
To be that a kind of surface abrasion resistance is very excellent and whole have good obdurability and than the composite surface material of high-wearing feature to material of the present invention, obviously improved the service life that is operated in the parts under the abrasive wear operating mode, material manufacture craft of the present invention is simple, cost is lower, is easy to apply.
Fig. 1, Fig. 2 are the microscopic structure with the made composite of the inventive method.
In order to realize technical scheme proposed by the invention, now illustrate as follows:
60/80 order casting carbon tungsten carbide particle (75wt%) with after 80/130 height of eye carbon ferrochrome evenly mixes, is placed on the bottom of common dry clay sand mold, and thickness is 3mm, and casting dimension is 50 * 50 * 30mm.Overheated 70 ℃ rare medium managese steel liquid (C:1.2wt% that contains, Mn:8wt%, Re:0.2wt%) be poured in the casting mold, naturally cooling, the composite surface material microscopic structure that is obtained is (Fig. 1 is the distribution of particle in matrix) as shown in Figure 1, the composite bed interface is excellent metallurgical with matrix and combines, as shown in Figure 2 (Fig. 2 is the interface of composite bed and medium managese steel).In load is 31N, does on the 360 order SiC sand paper when cutting the test of mill damage, and wearability higher chromium white iron improves 7.56 times.
Claims (2)
1. abrasive-resistant composite surface material, it is characterized in that, base metal is austenite medium managese steel (Mn:5-9wt%, C:0.7-1.2wt%, Re:0-0.2wt%), be compounded with the tungsten carbide particle of 40-80wt% in its surface casting, and between tungsten carbide particle, be formed with the multi-element alloyed matrix of Cr, Mn, W, C, Re.
2. method of making the described abrasive-resistant composite surface material of claim 1, it is characterized in that the 20-180 purpose casting carbon tungsten carbide particle of 40-80wt%, the even mixing of 20-80 purpose high carbon ferro-chrome of 15-60wt% are placed on the casting mold bottom, the cast degree of superheat is 50-100 ℃ a medium managese steel in casting mold then, and coagulation forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93100863 CN1036379C (en) | 1993-01-11 | 1993-01-11 | Wear-resistant surface composite material and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93100863 CN1036379C (en) | 1993-01-11 | 1993-01-11 | Wear-resistant surface composite material and manufacturing process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1089531A CN1089531A (en) | 1994-07-20 |
| CN1036379C true CN1036379C (en) | 1997-11-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93100863 Expired - Fee Related CN1036379C (en) | 1993-01-11 | 1993-01-11 | Wear-resistant surface composite material and manufacturing process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1036379C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384609C (en) * | 2002-11-05 | 2008-04-30 | 鲍志勇 | Casting infiltration method of heating power for preparing composite alloy material with metal base |
| CN103406519B (en) * | 2013-07-25 | 2015-06-03 | 北京工业大学 | Coated alloy powder used for casting surface alloying and alloying method |
| CN104043812A (en) * | 2014-06-11 | 2014-09-17 | 张家港市华尊宝特种材料科技有限公司 | Manufacturing method of carbon-containing metal part |
-
1993
- 1993-01-11 CN CN 93100863 patent/CN1036379C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1089531A (en) | 1994-07-20 |
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