CN112453387A - Powder metallurgy-based high-density stainless steel product formula and process thereof - Google Patents
Powder metallurgy-based high-density stainless steel product formula and process thereof Download PDFInfo
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- CN112453387A CN112453387A CN202011353466.1A CN202011353466A CN112453387A CN 112453387 A CN112453387 A CN 112453387A CN 202011353466 A CN202011353466 A CN 202011353466A CN 112453387 A CN112453387 A CN 112453387A
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- stainless steel
- powder metallurgy
- steel product
- powder
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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
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- 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
- B22F3/1035—Liquid phase sintering
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0207—Using a mixture of prealloyed powders or a master alloy
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
A high-density stainless steel product formula based on powder metallurgy and a process thereof relate to the technical field of powder metallurgy, and comprise the following steps: preparing ingredients, mixing the ingredients, pressing and molding, and sintering, wherein the ingredients comprise SUS304 or SUS310, copper powder and a lubricant, the SUS304 or SUS310 is used as a main material and should be enough, the copper powder is 200-mesh copper powder, the content of the copper powder is 3% -5%, the content of the lubricant is 1%, and in the sintering process, a sintering furnace reaches 1250 ℃, and the melting temperature of the copper powder is at the moment, so the invention has the beneficial effects that: by adopting the manufacturing process, the structural clearance of the stainless steel part can be reduced, so that the integral density of the stainless steel is improved, and the wear resistance, strength, toughness and rust resistance of the stainless steel are improved.
Description
Technical Field
The invention relates to the technical field of powder metallurgy, in particular to a formula and a process of a high-density stainless steel product based on powder metallurgy.
Background
Powder metallurgy is a process technique for producing metal powder or metal powder (or a mixture of metal powder and nonmetal powder) as a raw material, and then forming and sintering the raw material to produce metal materials, composite materials and various products. The powder metallurgy method is similar to the production of ceramics and belongs to the powder sintering technology, therefore, a series of new powder metallurgy technologies can also be used for preparing ceramic materials, stainless steel is short for stainless acid-resistant steel, and stainless steel is called stainless steel by weak corrosion media such as air, steam, water and the like or stainless steel with stainless property, and the stainless steel can provide convenience for people in daily use, but still has the following defects:
in the prior art, when stainless steel is manufactured traditionally, pressing and sintering are generally performed directly, so that the structural clearance of the stainless steel is large, the sealing cannot be further improved, and the wear resistance, strength, toughness and rust prevention capability of the stainless steel are affected.
Disclosure of Invention
The invention aims to provide a formula and a process of a high-density stainless steel product based on powder metallurgy, aiming at the problems that in the prior art, when stainless steel is manufactured traditionally, pressing and sintering are generally performed directly, so that the structural clearance of the stainless steel is larger, the sealing cannot be further improved, and the wear resistance, strength, toughness and antirust capacity of the stainless steel are affected.
In order to achieve the purpose, the invention adopts the following technical scheme: a high-density stainless steel product formula based on powder metallurgy and a process thereof comprise the following steps: preparing ingredients, namely preparing SUS, copper particles and a lubricant thereof, wherein the prepared ingredients are ensured to meet the national standard and are placed at a proper position so as to be used for storing materials; mixing the ingredients: mixing the prepared ingredients, and mechanically mixing to ensure that the materials can be stirred and mixed; and (3) pressing and forming: pressing the mixed ingredients through a machine so as to obtain a certain shape, thereby obtaining the required powder metallurgy product; and (3) sintering: the pressed material with a certain shape is sintered at high temperature by a machine, and the material is finally changed into a stainless steel product by utilizing the sintering action of high temperature.
More specific examples of the present invention include: the ingredients include SUS304 or SUS310, copper powder and lubricant.
More specific examples of the present invention include: the SUS304 or SUS310 is a main material, and a sufficient amount thereof should be secured.
More specific examples of the present invention include: the copper powder is 200 meshes of copper powder.
More specific examples of the present invention include: the content of the copper powder is 3% -5%.
More specific examples of the present invention include: the lubricant content is 1%.
More specific examples of the present invention include: in the sintering process, the temperature of the sintering furnace reaches 1250 ℃, the melting point of copper is reached, and the copper powder is melted. The main material is iron and alloy powder thereof, which do not reach the melting point, and copper can enter iron atom gaps after being melted, so that the alloy density is influenced, the density of the part can be improved, and the toughness of the part is enhanced.
More specific examples of the present invention include: the mixing can be carried out by adopting a professional three-dimensional mixer for even mixing or a three-dimensional mixer for mixing and other mechanical mixing.
More specific examples of the present invention include: the pressing forming can be carried out by adopting a press and a grinding tool.
More specific examples of the present invention include: the copper element in the copper powder is melted and then permeates into the iron powder alloy, so that the density of the pressed piece is better, and the alloy manufactured by the pressed piece has better density through the mutual combination of copper molecules and iron molecules.
After the technical scheme is adopted, the invention has the beneficial effects that: by adopting the manufacturing method, the structural clearance of the stainless steel part can be reduced, so that the integral density of the stainless steel is improved, and the wear resistance, strength, toughness and rust resistance of the stainless steel are improved.
Detailed Description
The technical scheme adopted by the specific implementation mode is as follows: the method comprises the following steps: preparing ingredients, namely preparing SUS, copper particles and a lubricant thereof, wherein the prepared ingredients are ensured to meet the national standard and are placed at a proper position so as to be used for storing materials; mixing the ingredients: mixing the prepared ingredients, and mechanically mixing to ensure that the materials can be stirred and mixed; and (3) pressing and forming: pressing the mixed ingredients through a machine so as to obtain a certain shape, thereby obtaining the required powder metallurgy product; and (3) sintering: the pressed material with a certain shape is sintered at high temperature by a machine, and the material is finally changed into a stainless steel product by utilizing the sintering action of high temperature.
The ingredients comprise SUS304 or SUS310, copper powder and a lubricant, the SUS304 or SUS310 is a main material and the sufficient amount of the SUS304 or SUS310 is ensured, the copper powder is 200-mesh copper powder, the content of the copper powder is 3% -5%, the content of the lubricant is 1%, in the sintering process, the temperature of a sintering furnace reaches 1250 ℃, the melting point of copper is reached, the copper powder is melted, the main material is iron and alloy powder thereof, the melting point of the iron and the alloy powder thereof is not reached, the melted copper can enter iron atom gaps, the alloy density is further influenced, the density of the part can be improved, the toughness of the part is enhanced, the mixing can be uniformly mixed by a special three-dimensional mixer or mechanically mixed by a three-dimensional mixer, the press molding can be performed by a press through a grinding tool, the copper element in the copper powder is melted and then permeates iron powder alloy, so that the density of a pressed part is better, so that the alloy manufactured by the method has better density.
The excessive copper powder content can lead to poor die casting forming effect and collapse of a press part at high temperature. Too little copper powder added results in poor copper penetration and failure to achieve the effect of increasing density. .
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 (9)
1. A high-density stainless steel product formula based on powder metallurgy and a process thereof are characterized in that: the method comprises the following steps:
1) preparing ingredients, namely preparing SUS, copper particles and a lubricant thereof, wherein the prepared ingredients are ensured to meet the national standard and are placed at a proper position so as to be used for storing materials;
2) mixing the ingredients: mixing the prepared ingredients, and mechanically mixing to ensure that the materials can be stirred and mixed;
3) and (3) pressing and forming: pressing the mixed ingredients through a machine so as to obtain a certain shape, thereby obtaining the required powder metallurgy product;
4) and (3) sintering: the pressed material with a certain shape is sintered at high temperature by a machine, and the material is finally changed into a stainless steel product by utilizing the sintering action of high temperature.
2. The powder metallurgy-based high-density stainless steel product formulation according to claim 1, wherein: the ingredients include SUS304 or SUS310, copper powder and lubricant.
3. The powder metallurgy-based high-density stainless steel product formulation according to claim 2, wherein: the SUS304 or SUS310 is a main material, and a sufficient amount thereof should be secured.
4. The powder metallurgy-based high-density stainless steel product formulation according to claim 2, wherein: the copper powder is 200 meshes of copper powder.
5. The powder metallurgy-based high-density stainless steel product formulation according to claim 2, wherein: the content of the copper powder is 3% -5%.
6. The powder metallurgy-based high-density stainless steel product formulation according to claim 2, wherein: the lubricant content is 1%.
7. The powder metallurgy-based high-density stainless steel product process according to claim 1, wherein: in the sintering process, the temperature of the sintering furnace reaches 1250 ℃, the melting point of copper is reached, and the copper powder is melted. The main material is iron and alloy powder thereof, which do not reach the melting point, and copper can enter iron atom gaps after being melted, so that the alloy density is influenced, the density of the part can be improved, and the toughness of the part is enhanced.
8. The powder metallurgy-based high-density stainless steel product process according to claim 1, wherein: the mixing can be carried out by adopting a professional three-dimensional mixer for even mixing or a three-dimensional mixer for mixing and other mechanical mixing.
9. The powder metallurgy-based high-density stainless steel product process according to claim 1, wherein: the pressing forming can be carried out by adopting a press and a grinding tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011353466.1A CN112453387A (en) | 2020-11-27 | 2020-11-27 | Powder metallurgy-based high-density stainless steel product formula and process thereof |
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| CN202011353466.1A CN112453387A (en) | 2020-11-27 | 2020-11-27 | Powder metallurgy-based high-density stainless steel product formula and process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115446306A (en) * | 2022-09-30 | 2022-12-09 | 东莞市环力智能科技有限公司 | Feeding and process preparation method of stainless steel powder metallurgy material with high copper content |
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|---|---|---|---|---|
| GB1495705A (en) * | 1973-12-18 | 1977-12-21 | Dain R | Making steel articles from powder |
| EP0214725A1 (en) * | 1985-07-15 | 1987-03-18 | Scm Metal Products Inc. | High impact strength powder metal part and method for making same |
| CN101579738A (en) * | 2009-06-30 | 2009-11-18 | 北京科技大学 | Double pressing molding method for preparing high-density powder metallurgical iron-base part |
| CN102233425A (en) * | 2011-07-22 | 2011-11-09 | 浙江中平粉末冶金有限公司 | Powder metallurgy formula and process |
| CN103084569A (en) * | 2013-01-04 | 2013-05-08 | 中南大学 | Additive activated low-alloy-content iron-based powder and preparation method of sintered materials |
| CN103266271A (en) * | 2013-05-29 | 2013-08-28 | 东睦(江门)粉末冶金有限公司 | Powder metallurgical formula and technology |
| CN104073723A (en) * | 2014-06-27 | 2014-10-01 | 山东威达粉末冶金有限公司 | Powder metallurgy material for manufacturing high-density part and processing technology thereof |
| CN111531166A (en) * | 2020-05-26 | 2020-08-14 | 南京东睦粉末冶金有限公司 | A method for improving sintering density of iron-based powder metallurgy parts |
| CN111607745A (en) * | 2020-07-10 | 2020-09-01 | 海安县鹰球粉末冶金有限公司 | High-density and high-hardness vacuum sintering stainless steel material and processing technology thereof |
-
2020
- 2020-11-27 CN CN202011353466.1A patent/CN112453387A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1495705A (en) * | 1973-12-18 | 1977-12-21 | Dain R | Making steel articles from powder |
| EP0214725A1 (en) * | 1985-07-15 | 1987-03-18 | Scm Metal Products Inc. | High impact strength powder metal part and method for making same |
| CN101579738A (en) * | 2009-06-30 | 2009-11-18 | 北京科技大学 | Double pressing molding method for preparing high-density powder metallurgical iron-base part |
| CN102233425A (en) * | 2011-07-22 | 2011-11-09 | 浙江中平粉末冶金有限公司 | Powder metallurgy formula and process |
| CN103084569A (en) * | 2013-01-04 | 2013-05-08 | 中南大学 | Additive activated low-alloy-content iron-based powder and preparation method of sintered materials |
| CN103266271A (en) * | 2013-05-29 | 2013-08-28 | 东睦(江门)粉末冶金有限公司 | Powder metallurgical formula and technology |
| CN104073723A (en) * | 2014-06-27 | 2014-10-01 | 山东威达粉末冶金有限公司 | Powder metallurgy material for manufacturing high-density part and processing technology thereof |
| CN111531166A (en) * | 2020-05-26 | 2020-08-14 | 南京东睦粉末冶金有限公司 | A method for improving sintering density of iron-based powder metallurgy parts |
| CN111607745A (en) * | 2020-07-10 | 2020-09-01 | 海安县鹰球粉末冶金有限公司 | High-density and high-hardness vacuum sintering stainless steel material and processing technology thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115446306A (en) * | 2022-09-30 | 2022-12-09 | 东莞市环力智能科技有限公司 | Feeding and process preparation method of stainless steel powder metallurgy material with high copper content |
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