CN1061698C - W-Ni-Fe alloy of high density and production thereof - Google Patents
W-Ni-Fe alloy of high density and production thereof Download PDFInfo
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- CN1061698C CN1061698C CN97108100A CN97108100A CN1061698C CN 1061698 C CN1061698 C CN 1061698C CN 97108100 A CN97108100 A CN 97108100A CN 97108100 A CN97108100 A CN 97108100A CN 1061698 C CN1061698 C CN 1061698C
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Abstract
The present invention relates to the high gravity alloy of tungsten ferronickel, wherein a tungstic content is larger than or equal to 92.2 wt%. Blending is carried out according to specification requirements. After profiling, a semi-finished product needs putting in a high-temperature ceramic boat filled with magnesium oxide or zirconia filling materials treated at high temperature more than 1550DEGC to be sintered, and in this way, the pollution of a completed product because of the impurities of oxygen, carbon, and the like., can be avoided. Thereby, the density of the high gravity alloy is larger than or equal to 99.5%, and each physical and mechanical property also completely conforms to requirements.
Description
The present invention relates to a kind of W-Ni-Fe alloy of high density, relate in particular to its making method.
W-Ni-Fe alloy of high density is mainly used among high-technology field and the war industry.Their characteristics are to have extraordinary proportion and corresponding hardness, also have certain extendability and Young's modulus simultaneously, lower thermal expansivity etc.
China has begun carrying out a large amount of explorations aspect the development W-Ni-Fe alloy of high density since nineteen sixties, but so far, do not find reliable and stable and easier making method as yet, and the density of finished product is difficult to reach 〉=requirement of 99.5% theoretical density.
Purpose of the present invention provides a kind of W-Ni-Fe alloy of high density and method for making thereof of practicality, and this method is not only comparatively easy, and because can get rid of oxygen fully, impurity such as carbon are to the pollution of finished product, so its physical and mechanical properties is met the requirements.
A kind of W-Ni-Fe alloy of high density involved in the present invention, the weight percent of its each component is: tungsten 92.2, nickel 5, iron 1.5, Yu Weitong.
The method of making above-mentioned W-Ni-Fe alloy of high density is experience batching successively then, and die mould and sintering circuit have been used the starting material of following specification: tungsten powder, purity＞99.88%, granularity 4 μ m in described burden process; Nickel powder, purity＞99.9%, granularity≤45 μ m; Iron powder, purity＞99.5%, O
2+ c＜0.5%, c＜0.05% wherein, granularity≤71 μ m; Copper powder, purity＞99.5%, granularity≤71 μ m; In described sintering circuit, the work in-process of die mould gained should place the pyroceramic boat, and use magnesium oxide or the zirconium white stopping composition parcel of crossing through pyroprocessing more than 1550 ℃, 1460～1480 ℃ of sintering temperatures, 60～120 minutes time.
Proportion according to the present invention's method gained finished product is 17.5～17.7g/cm
3, surface hardness is 28.5～30 (HRC), and its surface is straight, is uniform canescence, has the necessary physical and mechanical properties of high-density alloy.
Claims (2)
1, a kind of W-Ni-Fe alloy of high density, the weight percent of its each component is: tungsten 92.2, nickel 5, iron 1.5, Yu Weitong.
2, the manufacture method of W-Ni-Fe alloy of high density as claimed in claim 1, experience is prepared burden successively, and die mould and sintering circuit is characterized in that:
The specifications of raw materials that A, batching are used is-tungsten powder, purity＞99.88%, and granularity 4 μ m; Nickel powder, purity＞99.9%, granularity≤45 μ m; Iron powder, purity＞99.5%, O2+c＜0.5%, c＜0.05% wherein, granularity≤71 μ m;
Work in-process behind B, the die mould should be wrapped in magnesium oxide that pyroprocessing more than 1550 ℃ is crossed or zirconium white stopping composition and place the pyroceramic boat to carry out sintering, 1460 ℃～1480 ℃ of sintering temperatures, sintering time 60～120 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97108100A CN1061698C (en) | 1997-06-10 | 1997-06-10 | W-Ni-Fe alloy of high density and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97108100A CN1061698C (en) | 1997-06-10 | 1997-06-10 | W-Ni-Fe alloy of high density and production thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1201838A CN1201838A (en) | 1998-12-16 |
| CN1061698C true CN1061698C (en) | 2001-02-07 |
Family
ID=5170128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97108100A Expired - Fee Related CN1061698C (en) | 1997-06-10 | 1997-06-10 | W-Ni-Fe alloy of high density and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1061698C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007060907A1 (en) * | 2005-11-28 | 2007-05-31 | A.L.M.T.Corp. | Tungsten alloy particles, machining process with the same, and process for production thereof |
| CN102974823B (en) * | 2012-12-12 | 2015-05-20 | 广汉川冶新材料有限责任公司 | Sintering method of high gravity alloy |
| CN103978205A (en) * | 2013-02-07 | 2014-08-13 | 上海六晶金属科技有限公司 | Method for sintering green bodies of tungsten metal plates, molybdenum metal plates, tungsten alloy plates or molybdenum alloy plates |
| CN105441765B (en) * | 2016-01-05 | 2018-01-09 | 河南科技大学 | Bullet high-specific gravity tungsten alloy and preparation method thereof |
| CN113426997B (en) * | 2021-06-11 | 2023-04-18 | 西安交通大学 | High-specific-gravity tungsten-nickel-iron alloy and laser additive manufacturing method thereof |
| CN115161534A (en) * | 2022-06-27 | 2022-10-11 | 深圳市天洲计时科技有限公司 | Metal forming grinding head and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033651A (en) * | 1987-10-23 | 1989-07-05 | 西蒙·鲍库茨 | The tungsten ferronickel heavy alloy and the production method thereof of very high mechanical properties |
-
1997
- 1997-06-10 CN CN97108100A patent/CN1061698C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033651A (en) * | 1987-10-23 | 1989-07-05 | 西蒙·鲍库茨 | The tungsten ferronickel heavy alloy and the production method thereof of very high mechanical properties |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1201838A (en) | 1998-12-16 |
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