CN1166798C - Wear-resistant Co-base alloy material - Google Patents
Wear-resistant Co-base alloy material Download PDFInfo
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- CN1166798C CN1166798C CNB01106305XA CN01106305A CN1166798C CN 1166798 C CN1166798 C CN 1166798C CN B01106305X A CNB01106305X A CN B01106305XA CN 01106305 A CN01106305 A CN 01106305A CN 1166798 C CN1166798 C CN 1166798C
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- base alloy
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- 239000000956 alloy Substances 0.000 title claims abstract description 59
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 52
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 15
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229920001296 polysiloxane Polymers 0.000 abstract description 4
- 239000010941 cobalt Substances 0.000 description 11
- 229910017052 cobalt Inorganic materials 0.000 description 11
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 11
- 239000000470 constituent Substances 0.000 description 10
- 238000005275 alloying Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005495 investment casting Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910000531 Co alloy Inorganic materials 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- Valve-Gear Or Valve Arrangements (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to Co-base alloy, more specifically an abrasion-proof Co-base alloy material. The present invention has the technical scheme that the carbon content of alloy is increased to ensure the hardness and the strength indexes of the alloy under the condition that the main elements of the alloy are basically unchanged; the silicone content is reduced to increase the plasticity of the alloy; ferrum is cancelled to further improve the plasticity, and Ni and Mo as impurities are ignored. The Co-base alloy comprises the specific components with weight percentage: 27.0 to 27.9 wt% of Cr, 4.0 to 6.0 wt% of W, 1.3 to 1.6 wt% of C, 0.3 to 1.2 wt% of Si, 0.3 to 1 wt% of Mn and balance of Co. The Co-base alloy can improve the plasticity and the toughness of the material on the premise of satisfying the hardness and the strength of the material.
Description
The present invention relates to cobalt base alloy, specifically a kind of Wear-resistant Co-base alloy material.
The history of the development of cobalt base alloy and the existing last 100 years of application, by early stage high rigidity surface alloy (Hard facing alloy), develop and wear-resisting, corrosion-resistant and heat-resisting three major types cobalt base alloy [Borrow's Kreuk, cobalt and cobalt-base alloy, " special alloy " (Paul Crook, Cobalt and Cobalt Alloys, Specific Metals and Alloys)].In fact Co-Cr-W (Mo)-C is that alloy almost possesses above-mentioned character simultaneously, just along with the increase in demand of industrial development and deepening continuously of cobalt base alloy research, more emphasizes requirement in a certain respect on the alloy use properties.As Wear-resistant Co-base alloy,, also be to be applied the most widely the earliest owing to possess certain corrosion-resistant and resistance toheat simultaneously.According to abrasive conditions, roughly can be divided into adhesive wear, abrasive wear, fatigue wear, corrosive wear, erosive wear, wearing and tearing such as fretting wear mould (Shao Hesheng, Zhang Qing, the abrasive wear of metal and high-abrasive material, China Machine Press, Beijing, 1988.2), various modes combination in most cases, wear coefficient varies again, so the requirement higher to researching and proposing of Wear-resistant Co-base alloy performance.In present wear resistant alloy material design studies, satisfy requirement to material hardness and intensity, material plasticity and toughness are not ideal enough, as the valve base of under the small energy impact effect, working, select a kind of typical attrition resistant Stellite6 Wear-resistant Co-base alloy of excellent performance in the experiment, serious cutting and grinding crack have but occurred, and threatened the shock resistance fatigue wear performance of material, to such an extent as to can't be shaped.How this just make and to keep improving material plasticity under the strength of materials and the firmness level's prerequisite and toughness becomes key problem in technology.
The purpose of this invention is to provide a kind ofly under the prerequisite that satisfies material hardness and requirement of strength, improve material plasticity and flexible cobalt-based wear resistant alloy material.
Technical scheme of the present invention is: under the constant substantially situation of alloy principal element, the carbon content that improves alloy is to guarantee hardness of alloy and intensity index; Reduce silicone content, to improve alloy plasticity; Cancellation iron further improves plasticity; Ignore Ni, Mo, by weight percentage, its concrete composition Cr27.0～29.0; W4.0～6.0; C1.3～1.6; Si0.3～1.2; Mn0.3～1; The Co surplus.
The present invention has following advantage:
With prior art in pursue material plasticity cause that the strength degradation situation compares, the present invention can improve the plasticity of material when guaranteeing intensity and hardness number, because the raising of plasticity has improved alloy cutting and ground finish performance.
2. adopt the present invention that plasticity and yield behavior are improved simultaneously, can bring positive influence the alloy impulse fatigue resistance.
3. because the present invention can improve material plasticity and toughness under satisfying material hardness and requirement of strength prerequisite, thin light casting is shaped, mechanical workout and under the fatigue wear condition, use and become possibility.
Fig. 1 is the influence curve of carbon content variation of the present invention to alloy mechanical property, and other constituent content (wt-%) is: Cr28%, and W4.5%, Si1.0%, Mn0.5% does not contain Fe, the Co surplus.
Fig. 2 is the influence curve of silicone content variation of the present invention to alloy mechanical property, and other constituent content (wt-%) is: Cr28%, and W4.5%, C1.3%, Mn0.5% does not contain Fe, the Co surplus.
Fig. 3 is the influence curve of iron level variation of the present invention to alloy mechanical property, and other constituent content (wt-%) is: Cr28%, and W4.5%, C1.3%, Si1.0%, Mn0.5% does not contain Fe, the Co surplus.
Fig. 4 is an insert structure synoptic diagram in a kind of responsive valve base described in the embodiment of the invention 1.
Below in conjunction with drawings and Examples the present invention is described in further detail.
The present invention is under the constant substantially situation of alloy principal element, and the carbon content that improves alloy is to guarantee hardness of alloy and intensity index; Reduce silicone content, to improve alloy plasticity; Cancellation iron further improves plasticity; Ignore Ni, Mo, by weight percentage, its concrete composition: Cr27.0～29.0; W4.0～6.0; C1.3～1.6; Si0.3～1.2; Mn0.3～1; Co is a surplus.
The present invention is based on following design philosophy:
From C, Si sees on the influence curve of Fe content to alloy mechanical property, and as shown in Figure 1, alloy increases with C content, and intensity and hardness significantly increase, but causes that plasticity descends; As shown in Figure 2, the increase of Si content causes that not only plasticity descends, and causes hardness to reduce simultaneously, but little to intensity effect; As shown in Figure 3, Fe is little to alloy rigidity and intensity effect, but causes that plasticity descends.Comprehensive above-mentioned test-results is so in new alloy design, under the constant substantially situation of alloy principal element, carbon (C) content that improves alloy is to guarantee hardness of alloy and intensity index; Reduce silicon (Si) content, to improve alloy plasticity; Cancel iron Fe in addition, ignored impurity element nickel (Ni) and molybdenum (Mo).
Embodiment 1
As shown in Figure 4, insert in a kind of responsive valve base, structure is tiny, adopts conventional Stellite6 alloy in the past, serious processing crackle occurs, can not be shaped.Now adopt the present invention to adjust alloying constituent, make product when guaranteeing intensity and hardness number, improve the plasticity of material, solve a crackle difficult problem, be beneficial to shock-resistant polishing machine, smoothly by the test of valve use properties by the vacuum precision foundry engieering.Concrete alloying constituent and performance are as shown in table 1, and its smooth finish is 0.1 μ m.
Table 1 embodiment 1 alloying constituent (wt-%) and mechanical property
| Cr W C Si Mn Co | σ s， σ b， δ， Ak，J HRc MPa MPa ％ |
| 27.79 4.35 1.49 1.04 0.3 surpluses | 825 935 1.5 9.5 41.5 |
Embodiment 2
Insert in a kind of commutation valve base, service requirements and surface structure are suitable with embodiment 1, and size is bigger, has same processing problems, and the application of the invention alloy is resolved.The same vacuum precision casting technique that adopts, alloying constituent and mechanical property are as shown in table 2.
Table 2 embodiment 2 alloying constituents (wt-%) and mechanical property
| Cr W C Si Mn Co | σ s， σ b， δ， Ak，J HRc MPa MPa ％ |
| 27.86 4.68 1.28 0.70 0.68 surpluses | 748 927 1.7 12 41 |
Embodiment 3
Insert in a kind of commutation valve base, service requirements and surface structure are suitable with embodiment 1, and size is bigger, has same processing problems, and the application of the invention alloy is resolved.The same vacuum precision casting technique that adopts, alloying constituent and mechanical property are as shown in table 3.
Table 3 embodiment 3 alloying constituents (wt-%) and mechanical property
| Cr W C Si Mn Co | σ s， σ b， δ， Ak，J HRc MPa MPa ％ |
| 28.9 5.9 1.6 0.4 1.0 surpluses | 890 915 1.6 10 41.5 |
Relevant comparative example:
Implement the chemical ingredients of Stellite6 in the present invention and the prior art and mechanical property and do a contrast and test, particular case sees Table 4 and table 5.
Table 4 Stellite6 and cobalt base alloy chemical ingredients of the present invention
Alloy Cr W C Si Mn Fe Ni Mo Co
Stellite6
* 28 4.5 1.2 2
max 1
max 3
max 3
max 1
max Bal.
Stellite6
** 26.89 4.31 1.2 1.92 0.71 - - - Bal.
The present invention
*28 4.5 1.3-1.6 1.2
Max1
MaxThe Bal. of---
*Vacuum induction melting, precision-investment casting moulding coupon.
Table 5 Stellite6 and cobalt base alloy mechanical property of the present invention
Alloy sigma
s, MPa σ
b, MPa δ, % HRc
Stellite6
* 541 896 1 40
Stellite6
** 730 844 1.2 38
The present invention
* *650-820 800-930 1.5-2 41-43
Wherein:
*Data are quoted self-insurance sieve Kreuk, He Ni international corporation, " cobalt and cobalt-base alloy " (PaulCrook (Haynes International, Inc.) " Cobalt and Cobalt Alloy ");
*Data are the relevant comparative example of another prior art;
* *Data are the embodiment of the invention.
By table 4 and table 5 as seen, compared with prior art, alloy principal element of the present invention is almost constant, mainly adjusts C in the alloy, and Si content mates alloy strength hardness and plasticity index; When guaranteeing the intensity hardness number, material plasticity is improved.
Claims (1)
1. Wear-resistant Co-base alloy material is characterized in that: ignore impurity Ni, and Mo, by weight percentage, its concrete composition: Cr 27.0～29.0; W 4.0～6.0; C 1.3～1.6; Si 0.3～1.2; Mn 0.3～1; Co is a surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01106305XA CN1166798C (en) | 2001-03-14 | 2001-03-14 | Wear-resistant Co-base alloy material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01106305XA CN1166798C (en) | 2001-03-14 | 2001-03-14 | Wear-resistant Co-base alloy material |
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| CN1374410A CN1374410A (en) | 2002-10-16 |
| CN1166798C true CN1166798C (en) | 2004-09-15 |
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| CNB01106305XA Expired - Fee Related CN1166798C (en) | 2001-03-14 | 2001-03-14 | Wear-resistant Co-base alloy material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610516B (en) * | 2011-07-22 | 2015-01-21 | 上海华力微电子有限公司 | Method for improving adhesion force between photoresist and metal/metallic compound surface |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149126B (en) * | 2016-12-02 | 2019-07-26 | 中国科学院金属研究所 | A kind of cobalt-based composite material and preparation method that wear-resisting rotation axis carbide enhances |
| US11155904B2 (en) | 2019-07-11 | 2021-10-26 | L.E. Jones Company | Cobalt-rich wear resistant alloy and method of making and use thereof |
| CN111705240A (en) * | 2020-07-02 | 2020-09-25 | 河南科技大学 | Preparation method of graphene reinforced cobalt-based composite material for wear-resistant cutter |
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2001
- 2001-03-14 CN CNB01106305XA patent/CN1166798C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610516B (en) * | 2011-07-22 | 2015-01-21 | 上海华力微电子有限公司 | Method for improving adhesion force between photoresist and metal/metallic compound surface |
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| CN1374410A (en) | 2002-10-16 |
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