CN108311695A - A kind of decarbonization process of tungsten alloy blank material - Google Patents
A kind of decarbonization process of tungsten alloy blank material Download PDFInfo
- Publication number
- CN108311695A CN108311695A CN201810147887.5A CN201810147887A CN108311695A CN 108311695 A CN108311695 A CN 108311695A CN 201810147887 A CN201810147887 A CN 201810147887A CN 108311695 A CN108311695 A CN 108311695A
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- CN
- China
- Prior art keywords
- tungsten alloy
- blank material
- alloy blank
- bell
- unsticking
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Abstract
The present invention relates to a kind of decarbonization process of tungsten alloy blank material, the decarbonization process includes：Tungsten alloy blank material is put into bell-jar atmosphere unsticking stove；Nitrogen with certain humidity is passed through the bell-jar atmosphere unsticking stove；The tungsten alloy blank material heats up degreasing in the bell-jar atmosphere unsticking stove；When reaching preset temperature in temperature, the tungsten alloy blank material carries out decarburization after water is added into the humidifying pot of the bell-jar atmosphere unsticking stove.In the present invention, decarbonization process is added in tungsten alloy blank material after normal unsticking step, and the more traditional mechanical property of the mechanical property of product after sintering is promoted apparent.
Description
Technical field
The present invention relates to tungsten alloy blank material technical field, especially a kind of decarbonization process of tungsten alloy blank material.
Background technology
Tungsten alloy blank is half tungsten alloy product, is further processed by variously-shaped tungsten alloy and is configured to various differences
Tungsten alloy finished product.In the prior art, tungsten alloy blank is in brittleness, seriously affects product mechanical property.
Invention content
The purpose of the invention is to provide a kind of decarbonization process of tungsten alloy blank material.
The technical scheme is that：A kind of decarbonization process of tungsten alloy blank material, the decarbonization process include：
Tungsten alloy blank material is put into bell-jar atmosphere unsticking stove；
Nitrogen with certain humidity is passed through the bell-jar atmosphere unsticking stove；
The tungsten alloy blank material heats up degreasing in the bell-jar atmosphere unsticking stove；
When reaching preset temperature in temperature, the tungsten alloy after water is added into the humidifying pot of the bell-jar atmosphere unsticking stove
Blank material carries out decarburization.
A kind of decarbonization process of above-mentioned tungsten alloy blank material, the heating unsticking include the first stage, second stage and
Phase III；The temperature of the first stage is 70 DEG C, heating time 10min；The temperature of the second stage is 420 DEG C,
Heating time is 6.5h, soaking time 1h；The temperature of the phase III is 800 DEG C, heating time 3h, and soaking time is
2h。
A kind of decarbonization process of above-mentioned tungsten alloy blank material, the preset temperature are 800 DEG C.
The beneficial effects of the invention are as follows：Decarbonization process is added in tungsten alloy blank material after normal unsticking step, and product is being burnt
The more traditional mechanical property of mechanical property after knot is promoted apparent.
Specific implementation method
A kind of decarbonization process of tungsten alloy blank material, the decarbonization process include：
Tungsten alloy blank material is put into bell-jar atmosphere unsticking stove；
Nitrogen with certain humidity is passed through the bell-jar atmosphere unsticking stove；
During deviating from stearic acid, nitrogen is allowed first to be passed through in water pot, makes to contain certain moisture in nitrogen, subsequently into bell jar
Formula atmosphere unsticking stove contacts with product and takes away the stearic acid after volatilization as mobility medium.
The tungsten alloy blank material heats up degreasing in the bell-jar atmosphere unsticking stove；
During deviating from stearic acid, small part residual is had in the product, in sintering process, life that carbon is understood and tungsten react
At tungsten carbide, tungsten carbide is in brittleness, can seriously affect product mechanical property.
When reaching preset temperature in temperature, the tungsten after water is added into the humidifying pot of the bell-jar atmosphere unsticking stove
Alloy blank material carries out decarburization.
The bell-jar atmosphere unsticking stove carries out heating degreasing according to pre-set heating curve, when temperature reaches pre-
If when temperature, a certain amount of water is added in being filled to humidification, the carbon residue and vapor in product react generation one under the high temperature conditions
Carbonoxide and hydrogen, the carbon residue in product are eliminated.In this way, it is possible to reduce the carbon residue in tungsten alloy blank material improves sintering
The conquassation of W-Ni-Fe alloy alloy and intensity afterwards.
A kind of decarbonization process of above-mentioned tungsten alloy blank material, the heating unsticking include the first stage, second stage and
Phase III；The temperature of the first stage is 70 DEG C, heating time 10min；The temperature of the second stage is 420 DEG C,
Heating time is 6.5h, soaking time 1h；The temperature of the phase III is 800 DEG C, heating time 3h, and soaking time is
2h。
A kind of decarbonization process of above-mentioned tungsten alloy blank material, the preset temperature are 800 DEG C.
The embodiment of the invention is described in detail above, but the content is only the preferable of the invention
Embodiment should not be construed as limiting the practical range of the present invention.It is all according to equivalent change made by the invention range with
Improve etc., it should all still belong within this patent covering scope.
Claims (3)
1. a kind of decarbonization process of tungsten alloy blank material, which is characterized in that the decarbonization process includes：
Tungsten alloy blank material is put into bell-jar atmosphere unsticking stove；
Nitrogen with certain humidity is passed through the bell-jar atmosphere unsticking stove；
The tungsten alloy blank material heats up degreasing in the bell-jar atmosphere unsticking stove；
When reaching preset temperature in temperature, the tungsten alloy after water is added into the humidifying pot of the bell-jar atmosphere unsticking stove
Blank material carries out decarburization.
2. a kind of decarbonization process of tungsten alloy blank material according to claim 1, which is characterized in that the heating unsticking packet
Include first stage, second stage and phase III；The temperature of the first stage is 70 DEG C, heating time 10min；Described
The temperature of two-stage is 420 DEG C, heating time 6.5h, soaking time 1h；The temperature of the phase III is 800 DEG C, is added
The hot time is 3h, soaking time 2h.
3. a kind of decarbonization process of tungsten alloy blank material according to claim 1, which is characterized in that the preset temperature is
800℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810147887.5A CN108311695A (en) | 2018-02-13 | 2018-02-13 | A kind of decarbonization process of tungsten alloy blank material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810147887.5A CN108311695A (en) | 2018-02-13 | 2018-02-13 | A kind of decarbonization process of tungsten alloy blank material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108311695A true CN108311695A (en) | 2018-07-24 |
Family
ID=62904020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810147887.5A Pending CN108311695A (en) | 2018-02-13 | 2018-02-13 | A kind of decarbonization process of tungsten alloy blank material |
Country Status (1)
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| CN (1) | CN108311695A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1289658A (en) * | 2000-09-13 | 2001-04-04 | 湖南英捷高科技有限责任公司 | Technology for making high-specific-weight alloy parts in different shapes |
| CN105154700A (en) * | 2015-09-24 | 2015-12-16 | 瑞声精密制造科技(常州)有限公司 | Heavy-density tungsten alloy |
| CN105478776A (en) * | 2015-12-14 | 2016-04-13 | 北京科技大学 | Method for preparing high-density pure tungsten product through low-temperature sintering |
| CN106670470A (en) * | 2016-11-03 | 2017-05-17 | 西安华山金属制品有限公司 | Novel manufacturing method for tungsten alloy prefabricated fragment |
| CN107052346A (en) * | 2016-12-28 | 2017-08-18 | 江苏精研科技股份有限公司 | The preparation technology of powder injection forming tungsten-nickel hard alloy |
| CN107557642A (en) * | 2017-09-14 | 2018-01-09 | 江苏新誉航空精密机械制造有限公司 | Alloy for balancing weight and preparation method thereof and balancing weight |
-
2018
- 2018-02-13 CN CN201810147887.5A patent/CN108311695A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1289658A (en) * | 2000-09-13 | 2001-04-04 | 湖南英捷高科技有限责任公司 | Technology for making high-specific-weight alloy parts in different shapes |
| CN105154700A (en) * | 2015-09-24 | 2015-12-16 | 瑞声精密制造科技(常州)有限公司 | Heavy-density tungsten alloy |
| CN105478776A (en) * | 2015-12-14 | 2016-04-13 | 北京科技大学 | Method for preparing high-density pure tungsten product through low-temperature sintering |
| CN106670470A (en) * | 2016-11-03 | 2017-05-17 | 西安华山金属制品有限公司 | Novel manufacturing method for tungsten alloy prefabricated fragment |
| CN107052346A (en) * | 2016-12-28 | 2017-08-18 | 江苏精研科技股份有限公司 | The preparation technology of powder injection forming tungsten-nickel hard alloy |
| CN107557642A (en) * | 2017-09-14 | 2018-01-09 | 江苏新誉航空精密机械制造有限公司 | Alloy for balancing weight and preparation method thereof and balancing weight |
Non-Patent Citations (1)
| Title |
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| 雷丰顺: "MIM脱脂基础与方法", 《百度文库》 * |
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Application publication date: 20180724 |