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Powdery metallurgical finished product process

A technology of powder metallurgy and finished products, which is applied in the field of finished products of powder metallurgy, which can solve the problems of rough turning surface of parts, reduction of process, poor product quality, etc., and achieve the effects of stable production process, wide application range and high performance indicators

Inactive Publication Date: 2012-09-19
TAICANG JINLIDE POWDER METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the powder metallurgy is formed in granular form, the reduced formula will easily lead to rough turning surface of parts during machining, which will affect the gloss, and in severe cases, it will easily break and affect the service life of the product.
Reduction of process or inappropriate process adjustment will directly lead to poor product quality and performance indicators not up to standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Raw material formula: Add 0.8kg of lubricant and 0.4kg of MCF-078 to 100kg of basic raw material powder low alloy steel powder JDYT AB, wherein the basic raw material powder of low alloy steel powder JDYT AB is calculated as 100, and its components and The mass percent content is: 1.9% of Ni, 1.6% of Cu, 0.5% of Mo, 0.01% of C, 0-0.1% of impurities, and the balance of Fe.

[0024] (2) Stirring: Stir the raw material formula powder in step (1) for 1.5 hours, and mix well;

[0025] (3) Forming: Send the uniformly mixed powder into the hopper of the forming machine, and press the green product through the forming mold at one time;

[0026] (4) Sintering: Place the raw product on a carbon plate, sinter in a mesh belt sintering furnace, and sinter the green product into a semi-finished product. Sintering furnace temperature: the lowest temperature is 680°C±10°C, the highest temperature is 1130°C±10°C, the highest temperature is higher than the melting point of copper, a...

Embodiment 2

[0032] (1) Raw material formula: Add 0.5kg of lubricant and 0.2kg of MCF-078 to 100kg of basic raw material powder low alloy steel powder JDYT AB, wherein the basic raw material powder of low alloy steel powder JDYT AB is calculated as 100, and its components and The mass percent content is: 1.9% of Ni, 1.6% of Cu, 0.5% of Mo, 0.01% of C, 0-0.1% of impurities, and the balance of Fe.

[0033] (2) Stirring: Stir the raw material formula powder in step (1) for 1 hour, and mix well;

[0034] (3) Forming: Send the uniformly mixed powder into the hopper of the forming machine, and press the green product through the forming mold at one time;

[0035] (4) Sintering: Place the raw product on a carbon plate, sinter in a mesh belt sintering furnace, and sinter the green product into a semi-finished product. Sintering furnace temperature: the lowest temperature is 680°C±10°C, the highest temperature is 1130°C±10°C, the highest temperature is higher than the melting point of copper, and ...

Embodiment 3

[0041] (1) Raw material formula: Add 1.2kg of lubricant and 0.6kg of MCF-078 to 100kg of basic raw material powder low-alloy steel powder JDYT AB. The basic raw material powder of low-alloy steel powder JDYT AB is calculated as 100. The mass percent content is: 1.9% of Ni, 1.6% of Cu, 0.5% of Mo, 0.01% of C, 0-0.1% of impurities, and the balance of Fe.

[0042] (2) Stirring: Stir the raw material formula powder in step (1) for 2 hours, and mix well;

[0043] (3) Forming: Send the uniformly mixed powder into the hopper of the forming machine, and press the green product through the forming mold at one time;

[0044] (4) Sintering: Place the raw product on a carbon plate, sinter in a mesh belt sintering furnace, and sinter the green product into a semi-finished product. Sintering furnace temperature: the lowest temperature is 680°C±10°C, the highest temperature is 1130°C±10°C, the highest temperature is higher than the melting point of copper, and the temperature rises from the...

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Abstract

The invention discloses a powdery metallurgical finished product process. The powdery metallurgical finished product process comprises the following steps: adding components of a lubricant and an MCF-078 in a basic raw material low-alloy steel powder JDYTAB, wherein counted by to the mass of the basic raw material low-alloy steel powder JDYTAB, the adding amount of the lubricant is 0.7% and the adding amount of the MCF-078 is 0.3%; and stirring, forming, sintering, turning, performing thermal processing, performing vibration grinding, performing oil immersion and packaging metallurgical powder into a finished product. Compared with the prior art, the powdery metallurgical finished product process has the advantages of stable production process, high reliability; and a produced powdery metallurgical product is good in gloss, excellent in quality, high in performance and wide in application and can be applied to production of a gear, internal and external rotors, an output shaft and the like.

Description

technical field [0001] The invention relates to a finished product process of powder metallurgy. Background technique [0002] The existing production process of powder metallurgy products is mostly: stirring - forming - sintering - packaging and other processes. In this process, in order to reduce costs, many companies adopt methods such as streamlining formulas or reducing processes. Although streamlining formulas saves costs, it does not guarantee product performance and quality. Since the powder metallurgy is formed in granular form, the reduced formula will easily lead to rough turning surface of the parts during machining, which will affect the gloss, and in severe cases, it will easily break and affect the service life of the product. Reducing the process or adjusting the process is not appropriate, which directly leads to poor product quality and performance indicators that cannot meet the standard. Contents of the invention [0003] Purpose of the invention: for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/00B22F3/16C22C38/16C21D1/18C21D9/00
Inventor 杨立冬杨锦明徐道金
Owner TAICANG JINLIDE POWDER METALLURGY
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