CN1065100A - Tungsten stannum fluxing agent and manufacture method thereof - Google Patents
Tungsten stannum fluxing agent and manufacture method thereof Download PDFInfo
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- CN1065100A CN1065100A CN 92103294 CN92103294A CN1065100A CN 1065100 A CN1065100 A CN 1065100A CN 92103294 CN92103294 CN 92103294 CN 92103294 A CN92103294 A CN 92103294A CN 1065100 A CN1065100 A CN 1065100A
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- tungsten
- tin
- fluxing agent
- grain
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The present invention is a kind of tungsten stannum fluxing agent and manufacture method thereof.Its principal character is that the chemical ingredients (weight %) of this tungsten tin solubility promoter is: tin 6.0～16.7%, all the other are tungsten.Its manufacture method is earlier tungsten powder to be passed through the cold isostatic press moulding, makes the pure tungsten grain with certain porosity; Then with pure tungsten grain and tin grain according to chemical composition the scope batching, mixes, place High Temperature Furnaces Heating Apparatus to carry out the stannize sintering, make in the hole of tin liquor infiltration pure tungsten grain of fusing, make tungsten stannum fluxing agent of the present invention.
Description
The invention belongs to the fusing assistant field.Mainly be applicable to carbon, the analysis of sulfur content of samples such as non-ferrous metal, iron alloy, various steel alloy and refractory materials, glass, pottery, slag, ore.
When the carbon in metallurgical analysis combustion method mensuration metal and the nonmetal sample, sulphur content, extensively adopting high frequency furnace is the thermal source of burning sample, for carbon contained in the sample, the abundant voloxidation of sulphur composition are detected, outside the Pass having with sample copy stature matter, also need add some auxiliary accelerators, be common described special-purpose fusing assistant, be used to flux.
In the prior art, fusing assistant commonly used has pure tungsten grain, pure iron bits, fine copper bits etc., and a large amount of uses is the pure tungsten grain.Though the pure tungsten grain has solved carbon, the analysis of sulfur content problem of some material samples, but still has some limitation, still has weak point.Mainly be that slow as burn-off rates such as ore, slag, glass, potteries, melting is complete inadequately, causes errors of analytical results big to some high-melting-point high melting point alloy and inorganic materials.
The object of the present invention is to provide a kind of tungsten tin flux material and manufacture method, can satisfy various metals and nonmetal with the effect of better fluxing, so that the carbon in the sample such as high-melting-point refractory material, the requirement of analysis of sulfur content.
Based on above-mentioned purpose, the present invention proposes a kind of new flux material-tungsten tin alloy fusing assistant.The chemical ingredients of this tungsten stannum fluxing agent (weight %) is: tin 6.0～16.7%, all the other are tungsten.
In the raw material, tungsten adopts tungsten powder, and tin adopts the tin grain.
To raw material require as follows:
Requirement to tungsten powder:
Carbon content: 0.001～0.005%
Sulphur content: 0.0005～0.001%
Requirement to tin grain purity is the AR level:
Carbon content :≤0.005%
Sulphur content :≤0.001%
The tungsten stannum fluxing agent of being produced is to the requirement of carbon, sulphur content:
Carbon content :≤0.0015%
Sulphur content :≤0.0007%
Tungsten stannum fluxing agent of the present invention adopts the powder metallurgy manufacture method to produce.
According to the powder metallurgy principle, the metal-powder of certain particle size, at the certain pressure compacted under, and sintering at a certain temperature, according to pressure and sintering temperature, briquetting inside exists certain porosity, and this is one of important feature of powder metallurgy.
Tungsten stannum fluxing agent of the present invention utilizes powder metallurgy process to produce the pure tungsten grain exactly, and place sintering under the higher temperatures with the tin grain, because tin has become liquid state (fusing point of tin is 213.91 ℃) under comparatively high temps, tungsten particle with certain porosity is 3380 ℃ for the fusing point of solid-state tungsten still, like this, liquid tin just infiltrates and has in the pure tungsten grain of porosity, successfully produces tungsten stannum fluxing agent.
Concrete reparation technology is as follows:
At first with tungsten powder moulding in cold isostatic press, its pressure is 1500～2500Kg/cm
2Fragmentation is sieved then, granularity 10～60 purpose tungsten particles and tin grain are prepared burden by the composition scope, and under comparatively high temps, carry out the stannize sintering in the High Temperature Furnaces Heating Apparatus of after mixing, packing into together, sintering temperature is 1250～1700 ℃, make the tin fusing, and infiltrate fully in the hole of tungsten particle, promptly obtain tungsten stannum fluxing agent.
Tungsten stannum fluxing agent of the present invention can satisfy the carbon of following high-melting-point infusibility sample, the requirement of analysis of sulfur content fully, as stainless steel, tool steel, rapid steel, iron alloy, high-melting-point high strength alloy steel, and the carbon of the sample of raw material such as refractory materials, glass, pottery, slag, ore, the analysis of sulphur content.And analytical results is accurate.
The present invention compares with existing fusing assistant, has following advantage:
(1) performance is comprehensive, and purposes is wide, guarantees that analytical results is accurate.
(2) reparation technology advanced person.
(3) thermal value height makes the sample melting rapid, the efficient height.
Embodiment
Chemical ingredients scope and reparation technology according to tungsten stannum fluxing agent of the present invention have been smelted five batches of tungsten stannum fluxing agents.Its concrete chemical ingredients is as shown in table 1, and concrete smelting process parameter is as shown in table 2.
Claims (4)
1, a kind of tungsten stannum fluxing agent, it is characterized in that its chemical ingredients (weight %) is: tin 6.0～16.7%, all the other are tungsten.
2, fusing assistant according to claim 1 is characterized in that tungsten makes raw material with pure tungsten particle shape attitude, and tin is made raw material with tin particle shape attitude.
3, according to claim 1 and 2 described fusing assistants, it is characterized in that requirement: carbon content 0.001～0.005%, sulphur content 0.0005～0.001% to tungsten powder purity; Requirement to tin grain purity: carbon content≤0.005%, sulphur content≤0.001%.
4, the manufacture method of the described tungsten stannum fluxing agent of a kind of claim 1 is characterized in that:
A, elder generation are with tungsten powder compression moulding on cold isostatic press, and forming pressure is 1500～2500Kg/cm
2;
Tungsten piece after B, the moulding requires granularity at 10～60 orders through fragmentation;
C, tungsten particle add in the High Temperature Furnaces Heating Apparatus with the tin grain, carry out the stannize sintering processes, and treatment temp is 1250～1700 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92103294 CN1023571C (en) | 1992-05-11 | 1992-05-11 | Tungsten stannum fluxing agent and its making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92103294 CN1023571C (en) | 1992-05-11 | 1992-05-11 | Tungsten stannum fluxing agent and its making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1065100A true CN1065100A (en) | 1992-10-07 |
| CN1023571C CN1023571C (en) | 1994-01-19 |
Family
ID=4940130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92103294 Expired - Fee Related CN1023571C (en) | 1992-05-11 | 1992-05-11 | Tungsten stannum fluxing agent and its making method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1023571C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011060628A1 (en) * | 2009-11-23 | 2011-05-26 | Rong Jinxiang | Technical ration multi-component flux and preparation thereof |
| CN105441764A (en) * | 2015-12-29 | 2016-03-30 | 常熟市良益金属材料有限公司 | Tungsten-based high-density alloy |
| CN111318613A (en) * | 2020-02-28 | 2020-06-23 | 武汉科技大学 | Preparation method of tungsten-tin fluxing agent sheet |
-
1992
- 1992-05-11 CN CN 92103294 patent/CN1023571C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011060628A1 (en) * | 2009-11-23 | 2011-05-26 | Rong Jinxiang | Technical ration multi-component flux and preparation thereof |
| CN105441764A (en) * | 2015-12-29 | 2016-03-30 | 常熟市良益金属材料有限公司 | Tungsten-based high-density alloy |
| CN111318613A (en) * | 2020-02-28 | 2020-06-23 | 武汉科技大学 | Preparation method of tungsten-tin fluxing agent sheet |
| CN111318613B (en) * | 2020-02-28 | 2021-07-02 | 武汉科技大学 | Preparation method of tungsten-tin fluxing agent sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1023571C (en) | 1994-01-19 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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Free format text: CORRECT: PATENTEE; FROM: GENERAL RESEARCH INST. OF IRON AND STEEL, MINISTRY OF METALLURGICAL INDUSTRY TO: ANTAI SCIENCE AND TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Patentee after: Antai Science and Technology Co., Ltd. Patentee before: Iron and Steel Central Research Institute of Ministry of Metallurgical Industry |
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| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |