CN1116248A - Tungsten carbide base hard alloy containing rare-earth and its oxides - Google Patents
Tungsten carbide base hard alloy containing rare-earth and its oxides Download PDFInfo
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- CN1116248A CN1116248A CN94117520A CN94117520A CN1116248A CN 1116248 A CN1116248 A CN 1116248A CN 94117520 A CN94117520 A CN 94117520A CN 94117520 A CN94117520 A CN 94117520A CN 1116248 A CN1116248 A CN 1116248A
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- alloy
- tungsten carbide
- top hammer
- earth
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Abstract
The chemical composition of said alloy is WC 80-94% (wt), Co 5-14% (wt); 0.01-3% (wt) any one or two kinds of Ce, La, Yb, Sm, or Nd; 0.05-5% (wt) any one or two kinds of CeO2, La2O3, Yb2O3, Sm2O3, or Nd2O3; 0.05-4% (wt) any kind of Cr, Cu, W, Nd, Ta, or Mo. The invented alloy is mainly used in making the lifting hammer which is for making synthetic diamond. The hammer made of said alloy has long service life.
Description
The present invention relates to a kind ofly take the carbide alloy of tungsten carbide as base, mainly be applicable to and make the top hammer that diamond synthesis is used.
The WC-Co carbide alloy has good mechanical property in the prior art, and especially intensity height, hardness height, high temperature resistant are often used as and make top hammer and the cylinder pressure that diamond synthesis is used.Yet the condition of work during owing to diamond synthesis is very abominable, needs above high pressure and the high temperature that reaches about 1400 ℃ of 6000MPa, thereby almost works under maximum conditions with the top hammer that this WC-Co carbide alloy is manufactured, and service life is extremely limited.For example the eighties mid-term, the domestic top hammer life-span also only has 300～400 times.In addition because the combination property that need to get well of top hammer, in the past select materials, moulding, sintering etc. each make all meticulously control of link, in order to avoid cause defective to cause the rapid decline in top hammer life-span, even draw superman's body casualty accident.For this reason, need develop a kind of being more suitable in making diamond synthesis top hammer and making the Wimet that improves its work-ing life.
The object of the present invention is to provide a kind of performance to be more suitable in making diamond synthesis top hammer and making the higher tungsten carbide base carbide alloy that contains rare earth and oxide compound thereof in its work-ing life.
The concrete chemical composition (weight %) of tungsten carbide base carbide alloy of the present invention is as follows: WC:80～94%, Co:5～14%, among Ce.La, Yb, Sm or the Nd any one or wantonly more than two kinds sum be: 0.01～3%, CeO
2, La
2O
3, Yb
2O
3, Sm
2O
3Or Nd
2O
3In any one or wantonly more than two kinds sum be: any one is among 0.05～5%, Cr, Cu, W, Nd, Ta or the Mo: 0.05～4%.
In the alloy of the present invention, but the adding acceleration of sintering process of rare earth, purify the alloy crystal boundary, rare earth oxide then stoped WC grain grow up and the face-centred cubic structure (fcc) of Co to the conversion of close-packed hexagonal structure (hcp), and further strengthened the effect that Cr, Cu, W, Nb, Ta or Mo etc. strengthen the Co phase, thereby the combination property of alloy of the present invention is improved, manufactures top hammer with alloy of the present invention and relaxed technological requirement, and improved the service life of top hammer.
Hard alloy top hammer of the present invention is to adopt the powder metallurgy process preparation, and its preparation technology is as follows:
1, with the various material powders of percentage by weight weighing, the purity (RE+RE of mishmetal wherein
xO
y) 〉=99.8%, non-rare earth or rare earth compound＜0.1%, granularity≤3 μ m; RE (rare earth) is any one or wantonly sum more than two kinds among Ce, La, Yb, Sm or the Nd, RE
xO
yCeO
2, La
2O
3, Yb
2O
3, Sm
2O
3Or Nd
2O
3In any one or wantonly sum more than two kinds.
2, batch mixing: the powder for preparing is packed in the wet milk carbide alloy tank, and sintered carbide ball heavily is heavy 2～2.5 times of material in the tank, and take alcohol as ball-milling medium, Ball-milling Time is 24～120 hours, and powder is dried in vacuum desiccator behind the mill;
3, moulding: put into cold isostatic press compression moulding under 200MPa pressure after selecting special elasticity soft mode sealing for use, finishing a little after the taking-up;
4, sintering: pressed compact carries out sintering under 1350～1500 ℃ in vacuum high temperature furnace, and the sintering later stage will feed shielding gas to prevent the evaporation of Co;
5, post processing: sintered body is done last the processing in the high temperature insostatic pressing (HIP) stove, and comes out of the stove to obtain the Co of face-centred cubic structure with certain cooling rate cooling.
The present invention compared with prior art has following advantage:
1, adopt carbide alloy of the present invention and technology to prepare the top hammer that diamond synthesis is used, have good combination property, the top hammer of making than the WC-Co carbide alloy service life doubles many, such as table 1
Top hammer and the WC-Co alloy of table 1 carbide alloy preparation of the present invention
The comparison of the top hammer of preparation average life span when making the heating hammer
| Alloy of the present invention is made top hammer | The WC-Co alloy is made top hammer |
| 1886 times | 812 times |
2, adopt this bright alloy manufacturing to do top hammer, the specification requirement of material powder is relaxed;
3, adopt alloy of the present invention to manufacture top hammer, can relax the control requirement of each step preparation section.
4, yield rate height.
Embodiment.
The chemical ingredients scope of Wimet according to the present invention; 4 batches of alloys have been prepared; the concrete chemical ingredients such as the table 2 of 4 batches of alloys; after preparing burden respectively, the powder of 4 batches of alloys packs in the ball grinder; put into 2.5 times to the sintered carbide ball of grain weight and add dehydrated alcohol; ball milling was dried after 120 hours; pack in the soft mode through isostatic cool pressing 200MPa compression moulding; pressed compact is sintering in 1380 ℃ of vacuum ovens; feed argon shield after 1100 ℃; be chilled to room temperature soon at 1350 ℃ of hot isostatic pressings after coming out of the stove, the work-ing life such as the table 3 of top hammer.
The concrete chemical composition of 4 batches of alloys of table 2
| Lot number | WC | Co | Ce | CeO 2 | Cr |
| 1 | 92.7 | 7 | 0.1 | 0.1 | 0.1 |
| 2 | 91.85 | 7 | 0.5 | 0.5 | 0.15 |
| 3 | 90 | 7.8 | 1 | 1 | 0.20 |
| 4 | 89.25 | 10 | 0.25 | 0.25 | 0.25 |
4 batches of alloys of table 3 are made into the service life of top hammer
| Lot number | Behaviour in service | Service life (inferior) |
| 1 | Make the heating hammer | 2018 |
| 2 | Make side hammer | 3210 |
| 3 | Make side hammer | 4117 |
| 4 | Make the heating hammer | 1789 |
Claims (1)
1, a kind of tungsten carbide base carbide alloy that contains rare earth and oxide thereof, it is characterized in that chemical composition (weight %) is: WC:80～94%, Co:5～14%, among Ce, La, Yb, Sm or the Nd any one or wantonly more than two kinds sum be: 0.01～3%, CeO
2, La
2O
3, Yb
2O
3, Sm
2O
3Or Nd
2O
3In any one or wantonly more than two kinds sum be: any one is among 0.05～5%, Cr, Cu, W, Nd, Ta or the Mo: 0.05～4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94117520A CN1033526C (en) | 1994-10-25 | 1994-10-25 | Tungsten carbide base hard alloy containing rare-earth and its oxides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94117520A CN1033526C (en) | 1994-10-25 | 1994-10-25 | Tungsten carbide base hard alloy containing rare-earth and its oxides |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1116248A true CN1116248A (en) | 1996-02-07 |
| CN1033526C CN1033526C (en) | 1996-12-11 |
Family
ID=5038404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94117520A Expired - Fee Related CN1033526C (en) | 1994-10-25 | 1994-10-25 | Tungsten carbide base hard alloy containing rare-earth and its oxides |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1033526C (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061907C (en) * | 1996-08-28 | 2001-02-14 | 邢台市特种冶金轧辊厂 | Cermet roller ring |
| CN101760685B (en) * | 2008-12-25 | 2012-02-15 | 北京有色金属研究总院 | Superfine WC-Co cemented carbide containing rare-earth elements |
| CN103243252A (en) * | 2013-05-10 | 2013-08-14 | 东南大学 | Binder-phase wolfram-carbide (WC) hard alloy and preparation method thereof |
| CN103834823A (en) * | 2013-12-16 | 2014-06-04 | 安泰科技股份有限公司 | Preparation method for cemented carbide product |
| CN103862190A (en) * | 2012-12-17 | 2014-06-18 | 北京有色金属研究总院 | Novel cathode high-temperature brazing material and preparation method thereof |
| CN105980587A (en) * | 2013-12-17 | 2016-09-28 | 山特维克知识产权股份有限公司 | Composition for a novel grade for cutting tools |
| CN106893915A (en) * | 2017-01-22 | 2017-06-27 | 苏州新锐合金工具股份有限公司 | The porous effective sintered-carbide die material of microchannel aluminium alloy flat of one kind extruding |
| CN107267836A (en) * | 2017-06-07 | 2017-10-20 | 横店集团东磁股份有限公司 | A kind of twin crystal hard alloy and preparation method thereof |
| CN107267835A (en) * | 2017-06-07 | 2017-10-20 | 横店集团东磁股份有限公司 | A kind of non-magnesium hard alloy and preparation method thereof |
| CN108149110A (en) * | 2017-11-30 | 2018-06-12 | 成都众鑫达超硬工具材料科技有限公司 | A kind of hard alloy without adhesive material and preparation method thereof |
| CN109518058A (en) * | 2018-12-06 | 2019-03-26 | 宇龙精机科技（浙江）有限公司 | A kind of deep-hole drill bit hard alloy and preparation method thereof |
| CN109722583A (en) * | 2018-07-09 | 2019-05-07 | 自贡硬质合金有限责任公司 | A kind of cold upsetting die of car hard alloy and its production method |
| CN110788318A (en) * | 2019-10-29 | 2020-02-14 | 安泰天龙（宝鸡）钨钼科技有限公司 | Preparation method of high-density rare earth tungsten electrode |
| CN111979462A (en) * | 2020-08-21 | 2020-11-24 | 合肥工业大学 | WC-MoC-Co-Y2O3 hard alloy with high hardness and preparation method thereof |
| CN114147228A (en) * | 2021-11-03 | 2022-03-08 | 浙江恒成硬质合金有限公司 | Preparation method of hard alloy top hammer mixture |
| CN115415530A (en) * | 2022-10-13 | 2022-12-02 | 崇义章源钨业股份有限公司 | Hard alloy containing rare earth and preparation method thereof |
| CN116287926A (en) * | 2023-02-17 | 2023-06-23 | 长沙超金刚机械制造有限公司 | Hard alloy and preparation method thereof |
-
1994
- 1994-10-25 CN CN94117520A patent/CN1033526C/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061907C (en) * | 1996-08-28 | 2001-02-14 | 邢台市特种冶金轧辊厂 | Cermet roller ring |
| CN101760685B (en) * | 2008-12-25 | 2012-02-15 | 北京有色金属研究总院 | Superfine WC-Co cemented carbide containing rare-earth elements |
| CN103862190A (en) * | 2012-12-17 | 2014-06-18 | 北京有色金属研究总院 | Novel cathode high-temperature brazing material and preparation method thereof |
| CN103862190B (en) * | 2012-12-17 | 2016-04-27 | 北京有色金属研究总院 | A kind of negative electrode high-temperature brazing material and preparation method thereof |
| CN103243252A (en) * | 2013-05-10 | 2013-08-14 | 东南大学 | Binder-phase wolfram-carbide (WC) hard alloy and preparation method thereof |
| CN103243252B (en) * | 2013-05-10 | 2015-02-18 | 东南大学 | Binder-phase wolfram-carbide (WC) hard alloy and preparation method thereof |
| CN103834823A (en) * | 2013-12-16 | 2014-06-04 | 安泰科技股份有限公司 | Preparation method for cemented carbide product |
| CN105980587A (en) * | 2013-12-17 | 2016-09-28 | 山特维克知识产权股份有限公司 | Composition for a novel grade for cutting tools |
| US10781141B2 (en) | 2013-12-17 | 2020-09-22 | Hyperion Materials And Technologies (Sweden) Ab | Composition for a novel grade for cutting tools |
| CN106893915B (en) * | 2017-01-22 | 2018-12-04 | 苏州新锐合金工具股份有限公司 | It is a kind of to squeeze the porous effective sintered-carbide die material of microchannel aluminium alloy flat |
| CN106893915A (en) * | 2017-01-22 | 2017-06-27 | 苏州新锐合金工具股份有限公司 | The porous effective sintered-carbide die material of microchannel aluminium alloy flat of one kind extruding |
| CN107267836A (en) * | 2017-06-07 | 2017-10-20 | 横店集团东磁股份有限公司 | A kind of twin crystal hard alloy and preparation method thereof |
| CN107267835B (en) * | 2017-06-07 | 2019-06-18 | 横店集团东磁股份有限公司 | A kind of non-magnesium hard alloy and preparation method thereof |
| CN107267835A (en) * | 2017-06-07 | 2017-10-20 | 横店集团东磁股份有限公司 | A kind of non-magnesium hard alloy and preparation method thereof |
| CN108149110A (en) * | 2017-11-30 | 2018-06-12 | 成都众鑫达超硬工具材料科技有限公司 | A kind of hard alloy without adhesive material and preparation method thereof |
| CN109722583A (en) * | 2018-07-09 | 2019-05-07 | 自贡硬质合金有限责任公司 | A kind of cold upsetting die of car hard alloy and its production method |
| CN109518058A (en) * | 2018-12-06 | 2019-03-26 | 宇龙精机科技（浙江）有限公司 | A kind of deep-hole drill bit hard alloy and preparation method thereof |
| CN110788318A (en) * | 2019-10-29 | 2020-02-14 | 安泰天龙（宝鸡）钨钼科技有限公司 | Preparation method of high-density rare earth tungsten electrode |
| CN110788318B (en) * | 2019-10-29 | 2022-08-12 | 安泰天龙（宝鸡）钨钼科技有限公司 | Preparation method of high-density rare earth tungsten electrode |
| CN111979462A (en) * | 2020-08-21 | 2020-11-24 | 合肥工业大学 | WC-MoC-Co-Y2O3 hard alloy with high hardness and preparation method thereof |
| CN114147228A (en) * | 2021-11-03 | 2022-03-08 | 浙江恒成硬质合金有限公司 | Preparation method of hard alloy top hammer mixture |
| CN114147228B (en) * | 2021-11-03 | 2024-02-13 | 浙江恒成硬质合金有限公司 | Preparation method of hard alloy top hammer mixture |
| CN115415530A (en) * | 2022-10-13 | 2022-12-02 | 崇义章源钨业股份有限公司 | Hard alloy containing rare earth and preparation method thereof |
| CN115415530B (en) * | 2022-10-13 | 2023-10-24 | 崇义章源钨业股份有限公司 | Rare earth-containing hard alloy and preparation method thereof |
| CN116287926A (en) * | 2023-02-17 | 2023-06-23 | 长沙超金刚机械制造有限公司 | Hard alloy and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1033526C (en) | 1996-12-11 |
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