CN111570784A - Preparation method of iron-copper alloy diffusion powder - Google Patents
Preparation method of iron-copper alloy diffusion powder Download PDFInfo
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- CN111570784A CN111570784A CN202010341046.5A CN202010341046A CN111570784A CN 111570784 A CN111570784 A CN 111570784A CN 202010341046 A CN202010341046 A CN 202010341046A CN 111570784 A CN111570784 A CN 111570784A
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/044—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by jet milling
Abstract
The invention discloses a preparation method of iron-copper alloy diffusion powder, which comprises the following specific steps: (1) nano iron powder and superfine copper powder are used as raw materials; (2) putting zinc stearate as a medium and the two raw materials into a closed container, and fully mixing for 3 hours; (3) then, introducing hydrogen into a push boat type reduction furnace for reduction, wherein the reduction temperature is 500-600 ℃, the boat loading amount is 10 kilograms, the reduction time is 9 hours, and the hydrogen flow is 6m 3/h; (4) protecting the massive iron-copper alloy powder obtained after reduction by using carbon dioxide gas; (5) crushing and grading by using a nitrogen closed circulating jet mill to obtain powdered iron-copper alloy diffusion powder; (6) and mixing the materials to obtain the finished product of the iron-copper alloy powder. The yield of the invention is more than 90 percent, which is higher than that of the traditional process; the element distribution is wide, the void degree is uniform, the compatibility with other metals is enhanced, the forming degree and the folding strength of the product are effectively improved, the service life of the product is prolonged, and the service performance of the product is obviously improved.
Description
Technical Field
The invention relates to the technical field of alloy powder, in particular to a preparation method of iron-copper alloy diffusion powder.
Background
The manufacturing method of the iron-copper alloy powder in the current market is generally an atomization method, and the defects of the atomization method for producing the iron-copper alloy powder are as follows: 1. the fine powder rate is low (70-75%); 2. the compactness of the product is poor, the compression performance is poor, and the folding resistance of the product is reduced; 3. has poor eutectic property with other metals.
Disclosure of Invention
The invention aims to provide a preparation method of iron-copper alloy diffusion powder aiming at the defects and shortcomings of the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the preparation method of the iron-copper alloy diffusion powder has the innovation points that the preparation method comprises the following specific steps:
(1) takes nano iron powder and superfine copper powder as raw materials, and the mass percent of the components is that the iron content accounts for 60 plus or minus 1 percent, the copper content accounts for 40 plus or minus 1 percent, and the Fisher-size is 2.5E3.0 μm, oxygen content less than 0.40%, and bulk density of 2.0-3.0g/cm3；
(2) Putting zinc stearate as a medium and the two raw materials into a closed container, and fully mixing for 3 hours;
(3) then, introducing hydrogen into a push boat type reduction furnace for reduction at the reduction temperature of 500-600 ℃, with the boat loading amount of 10 kg and the reduction time of 9 hours, wherein the hydrogen flow is 6m3/h；
(4) Protecting the massive iron-copper alloy powder obtained after reduction by using carbon dioxide gas;
(5) crushing and grading by using a nitrogen closed circulating jet mill to obtain powdered iron-copper alloy diffusion powder;
(6) and mixing the materials to obtain the finished product of the iron-copper alloy powder.
The invention has the beneficial effects that:
the yield of the invention is more than 90 percent, and the yield of the traditional atomization method is only 70 to 75 percent, thereby greatly reducing the energy consumption; nano iron powder and superfine copper powder are mutually permeated to form crystals in the processes of high-temperature melting fission and chemical component decomposition; the element distribution is wide, the void degree is uniform, the compatibility with other metals is enhanced, the forming degree and the folding strength of the product are effectively improved, the service life of the product is prolonged, and the service performance of the product is obviously improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
A preparation method of iron-copper alloy diffusion powder comprises the following specific steps:
(1) takes nano iron powder and superfine copper powder as raw materials, and the mass percentages of the components are that the iron content accounts for 60 percent, the copper content accounts for 40 percent, the Fisher particle size is between 2.5 and 3.0 mu m, the oxygen content is less than 0.40 percent, and the apparent density is 2.0 to 3.0g/cm3；
(2) Putting zinc stearate as a medium and the two raw materials into a closed container, and fully mixing for 3 hours;
(3) then hydrogen is introduced into a push boat type reduction furnace for reduction, the reduction temperature is 500 ℃, the boat loading amount is 10 kilograms, the reduction time is 9 hours, and the hydrogen flow is 6m3/h；
(4) Protecting the massive iron-copper alloy powder obtained after reduction by using carbon dioxide gas;
(5) crushing and grading by using a nitrogen closed circulating jet mill to obtain powdered iron-copper alloy diffusion powder;
(6) and mixing the materials to obtain the finished product of the iron-copper alloy powder.
Example 2
A preparation method of iron-copper alloy diffusion powder comprises the following specific steps:
(1) takes nano iron powder and superfine copper powder as raw materials, and the mass percentages of the components are that iron content accounts for 61 percent, copper content accounts for 39 percent, Fisher granularity is between 2.5 and 3.0 mu m, oxygen content is less than 0.40 percent, and bulk density is 2.0 to 3.0g/cm3；
(2) Putting zinc stearate as a medium and the two raw materials into a closed container, and fully mixing for 3 hours;
(3) then hydrogen is introduced into a push boat type reduction furnace for reduction, the reduction temperature is 600 ℃, the boat loading amount is 10 kilograms, the reduction time is 9 hours, and the hydrogen flow is 6m3/h；
(4) Protecting the massive iron-copper alloy powder obtained after reduction by using carbon dioxide gas;
(5) crushing and grading by using a nitrogen closed circulating jet mill to obtain powdered iron-copper alloy diffusion powder;
(6) and mixing the materials to obtain the finished product of the iron-copper alloy powder.
Example 3
A preparation method of iron-copper alloy diffusion powder comprises the following specific steps:
(1) takes nano iron powder and superfine copper powder as raw materials, and the mass percentages of the components are that iron content accounts for 59 percent, copper content accounts for 41 percent, Fisher granularity is between 2.5 and 3.0 mu m, and oxygen content is less than 0.40 percentBulk density of 2.0-3.0g/cm3；
(2) Putting zinc stearate as a medium and the two raw materials into a closed container, and fully mixing for 3 hours;
(3) then hydrogen is introduced into a push boat type reduction furnace for reduction, the reduction temperature is 550 ℃, the boat loading amount is 10 kilograms, the reduction time is 9 hours, and the hydrogen flow is 6m3/h；
(4) Protecting the massive iron-copper alloy powder obtained after reduction by using carbon dioxide gas;
(5) crushing and grading by using a nitrogen closed circulating jet mill to obtain powdered iron-copper alloy diffusion powder;
(6) and mixing the materials to obtain the finished product of the iron-copper alloy powder.
Watch 1
| Yield of finished products% | |
| Example 1 | 92 |
| Example 2 | 94 |
| Example 3 | 93 |
As can be seen from Table I, the yield of the present invention is high.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (1)
1. The preparation method of the iron-copper alloy diffusion powder is characterized by comprising the following specific steps of:
(1) takes nano iron powder and superfine copper powder as raw materials, and the mass percentages of the components are that the iron content accounts for 60 +/-1 percent, the copper content accounts for 40 +/-1 percent, the Fisher particle size is between 2.5 and 3.0 mu m, the oxygen content is less than 0.40 percent, and the apparent density is 2.0 to 3.0g/cm3；
(2) Putting zinc stearate as a medium and the two raw materials into a closed container, and fully mixing for 3 hours;
(3) then, introducing hydrogen into a push boat type reduction furnace for reduction at the reduction temperature of 500-600 ℃, with the boat loading amount of 10 kg and the reduction time of 9 hours, wherein the hydrogen flow is 6m3/h；
(4) Protecting the massive iron-copper alloy powder obtained after reduction by using carbon dioxide gas;
(5) crushing and grading by using a nitrogen closed circulating jet mill to obtain powdered iron-copper alloy diffusion powder;
(6) and mixing the materials to obtain the finished product of the iron-copper alloy powder.
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| CN202010341046.5A CN111570784A (en) | 2020-04-27 | 2020-04-27 | Preparation method of iron-copper alloy diffusion powder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182526A (en) * | 2021-04-22 | 2021-07-30 | 江苏萌达新材料科技有限公司 | Preparation method of reduced nickel diffusion powder |
| CN113199032A (en) * | 2021-04-22 | 2021-08-03 | 江苏萌达新材料科技有限公司 | Preparation method of cobalt powder with low apparent density |
| CN114147229A (en) * | 2021-11-23 | 2022-03-08 | 江苏萌达新材料科技有限公司 | Preparation method of copper-zinc alloy diffusion powder |
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| CN101088669A (en) * | 2007-07-18 | 2007-12-19 | 重庆扬子粉末冶金有限责任公司 | Bronze coated composite iron powder and its production process |
| CN102554216A (en) * | 2012-02-07 | 2012-07-11 | 建德市易通金属粉材有限公司 | Water atomization ferrum-copper alloy powder and manufacturing method |
| CN103008651A (en) * | 2013-01-15 | 2013-04-03 | 湖南顶融科技有限公司 | Copper iron tin powder composition and preparation method thereof |
| JP2015172236A (en) * | 2014-02-18 | 2015-10-01 | 住友金属鉱山株式会社 | Method of producing iron/copper composite powder for powder metallurgy |
| CN106670454A (en) * | 2017-01-24 | 2017-05-17 | 昆山德泰新材料科技有限公司 | Iron-copper alloy powder and preparation method thereof |
| CN108580918A (en) * | 2018-05-21 | 2018-09-28 | 金川集团股份有限公司 | A kind of production method of copper and iron spread powder |
| CN109702217A (en) * | 2019-03-04 | 2019-05-03 | 江苏萌达新材料科技有限公司 | A kind of iron cobalt-copper alloy powder and preparation method thereof |
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2020
- 2020-04-27 CN CN202010341046.5A patent/CN111570784A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101088669A (en) * | 2007-07-18 | 2007-12-19 | 重庆扬子粉末冶金有限责任公司 | Bronze coated composite iron powder and its production process |
| CN102554216A (en) * | 2012-02-07 | 2012-07-11 | 建德市易通金属粉材有限公司 | Water atomization ferrum-copper alloy powder and manufacturing method |
| CN103008651A (en) * | 2013-01-15 | 2013-04-03 | 湖南顶融科技有限公司 | Copper iron tin powder composition and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182526A (en) * | 2021-04-22 | 2021-07-30 | 江苏萌达新材料科技有限公司 | Preparation method of reduced nickel diffusion powder |
| CN113199032A (en) * | 2021-04-22 | 2021-08-03 | 江苏萌达新材料科技有限公司 | Preparation method of cobalt powder with low apparent density |
| CN114147229A (en) * | 2021-11-23 | 2022-03-08 | 江苏萌达新材料科技有限公司 | Preparation method of copper-zinc alloy diffusion powder |
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