CN111085677A - Powder metallurgy forming method - Google Patents
Powder metallurgy forming method Download PDFInfo
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- CN111085677A CN111085677A CN201810969867.6A CN201810969867A CN111085677A CN 111085677 A CN111085677 A CN 111085677A CN 201810969867 A CN201810969867 A CN 201810969867A CN 111085677 A CN111085677 A CN 111085677A
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- China
- Prior art keywords
- parts
- powder
- finished product
- blank
- product
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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
- 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
- B22F1/102—Metallic powder coated with organic material
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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
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
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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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Abstract
The invention relates to a powder metallurgy forming method, which is characterized by comprising the following steps: the specific method comprises the following steps: 1-7 parts of graphite powder, 7-17 parts of electrolytic copper powder, 2-8 parts of stearic acid, 5-8 parts of nickel oxide, 50-98 parts of reduced iron powder, 1-7 parts of manganous sulfide, 5-10 parts of aluminum oxide, 0.5-0.9 part of free cutting agent, 0.5-1 part of micro powder wax and 0.2-0.5 part of reinforcing agent; pressing the blank into a blank with a set shape under the pressure of 80-100 MPa for later use; feeding the product blank piece into a sintering electric furnace to be sintered into a semi-finished product piece; performing oil immersion and steam treatment, and cleaning to obtain a finished product; the formula has little pollution to the environment, and the method simplifies the production steps and improves the production efficiency.
Description
Technical Field
The invention relates to the field of powder metallurgy, in particular to a powder metallurgy forming method.
Background
Powder metallurgy is a process of making metal powder and forming a mixture of metal powder and non-metal powder into a finished product by forming and sintering.
The commonly adopted powder metallurgy process has great environmental pollution, and in the mechanical industry, people increasingly advocate simplifying production steps and improving production efficiency.
Disclosure of Invention
The invention aims to solve the technical problem of providing a powder metallurgy forming method which has little pollution to the environment, simplifies the production steps and improves the production efficiency.
In order to solve the technical problems, the technical scheme of the invention is as follows: the powder metallurgy forming method has the innovation points that: the method comprises the following steps:
s1: uniformly mixing 1-7 parts of graphite powder, 5-10 parts of electrolytic copper powder, 2-8 parts of stearic acid, 5-8 parts of nickel oxide, 50-98 parts of reduced iron powder, 1-7 parts of manganous sulfide, 5-10 parts of aluminum oxide, 0.5-0.9 part of free cutting agent, 0.5-1 part of micro powder wax and 0.5-0.9 part of reinforcing agent;
s2: putting the mixed powder in the previous step into a die, and pressing the powder into a blank with a set shape under the pressure of 80-100 MPa for later use;
s3: sending the product blank piece into a sintering electric furnace, sintering the product blank piece into a semi-finished product piece at the temperature of 170-250 ℃;
s4: cooling the semi-finished product and soaking the semi-finished product in engine oil for treatment, wherein the temperature is 70-90 ℃, and the oil soaking time is 35-55 minutes;
s5: carrying out steam treatment on the product obtained in the previous step to generate an anti-rust layer on the surface of the finished product;
s6: cleaning to obtain a finished product.
The invention has the advantages that: 1) the formula has little pollution to the environment, and the method simplifies the production steps and improves the production efficiency.
Detailed Description
The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
Example 1: a powder metallurgy forming method, comprising the steps of:
s1: uniformly mixing 1 part of graphite powder, 5 parts of electrolytic copper powder, 2 parts of stearic acid, 5 parts of nickel oxide, 50 parts of reduced iron powder, 1 part of manganous sulfide, 5 parts of aluminum oxide, 0.2 part of free cutting agent, 0.5 part of micro powder wax and 0.2 part of reinforcing agent;
s2: putting the mixed powder in the previous step into a die, and pressing the powder into a blank with a set shape under the pressure of 60MPa for later use;
s3: feeding the product blank piece into a sintering electric furnace, sintering the product blank piece into a semi-finished product piece at the temperature of 170 ℃;
s4: cooling the semi-finished product and soaking the semi-finished product in engine oil for treatment at 70 ℃ for 35 minutes;
s5: carrying out steam treatment on the product obtained in the previous step to generate an anti-rust layer on the surface of the finished product;
s6: cleaning to obtain a finished product.
Example 2: a powder metallurgy forming method, comprising the steps of:
s1: uniformly mixing 3 parts of graphite powder, 7 parts of electrolytic copper powder, 5 parts of stearic acid, 6 parts of nickel oxide, 75 parts of reduced iron powder, 3 parts of manganous sulfide, 7 parts of aluminum oxide, 0.3 part of free cutting agent, 0.7 part of micro powder wax and 0.3 part of reinforcing agent;
s2: putting the mixed powder in the previous step into a die, and pressing the powder into a blank with a set shape under the pressure of 65MPa for later use;
s3: feeding the product blank piece into a sintering electric furnace, sintering the product blank piece into a semi-finished product piece at the temperature of 210 ℃;
s4: cooling the semi-finished product and soaking the semi-finished product in engine oil for treatment at 80 ℃ for 45 minutes;
s5: carrying out steam treatment on the product obtained in the previous step to generate an anti-rust layer on the surface of the finished product;
s6: cleaning to obtain a finished product.
Example 3: the powder metallurgy forming method has the innovation points that: the method comprises the following steps:
s1: uniformly mixing 5 parts of graphite powder, 10 parts of electrolytic copper powder, 8 parts of stearic acid, 8 parts of nickel oxide, 98 parts of reduced iron powder, 5 parts of manganous sulfide, 10 parts of aluminum oxide, 0.5 part of free cutting agent, 1 part of micro-powder wax and 0.5 part of reinforcing agent;
s2: putting the mixed powder in the previous step into a die, and pressing the powder into a blank with a set shape under the pressure of 70MPa for later use;
s3: feeding the product blank piece into a sintering electric furnace, sintering the product blank piece into a semi-finished product piece at the temperature of 250 ℃;
s4: cooling the semi-finished product and soaking the semi-finished product in engine oil for treatment, wherein the oil soaking time is 55 minutes at 90 ℃;
s5: carrying out steam treatment on the product obtained in the previous step to generate an anti-rust layer on the surface of the finished product;
s6: cleaning to obtain a finished product.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (1)
1. A powder metallurgy forming method is characterized in that: the method comprises the following steps:
s1: uniformly mixing 1-7 parts of graphite powder, 5-10 parts of electrolytic copper powder, 2-8 parts of stearic acid, 5-8 parts of nickel oxide, 50-98 parts of reduced iron powder, 1-7 parts of manganous sulfide, 5-10 parts of aluminum oxide, 0.5-0.9 part of free cutting agent, 0.5-1 part of micro powder wax and 0.5-0.9 part of reinforcing agent;
s2: putting the mixed powder in the previous step into a die, and pressing the powder into a blank with a set shape under the pressure of 80-100 MPa for later use;
s3: sending the product blank piece into a sintering electric furnace, sintering the product blank piece into a semi-finished product piece at the temperature of 170-250 ℃;
s4: cooling the semi-finished product and soaking the semi-finished product in engine oil for treatment, wherein the temperature is 70-90 ℃, and the oil soaking time is 35-55 minutes;
s5: carrying out steam treatment on the product obtained in the previous step to generate an anti-rust layer on the surface of the finished product;
s6: cleaning to obtain a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969867.6A CN111085677A (en) | 2018-08-24 | 2018-08-24 | Powder metallurgy forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969867.6A CN111085677A (en) | 2018-08-24 | 2018-08-24 | Powder metallurgy forming method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111085677A true CN111085677A (en) | 2020-05-01 |
Family
ID=70391221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810969867.6A Pending CN111085677A (en) | 2018-08-24 | 2018-08-24 | Powder metallurgy forming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111085677A (en) |
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2018
- 2018-08-24 CN CN201810969867.6A patent/CN111085677A/en active Pending
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200501 |
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| WD01 | Invention patent application deemed withdrawn after publication |