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1Cr17Ni7 stainless steel MIM feed and preparation method of its product

A 1cr17ni7, stainless steel technology, applied in the field of 1Cr17Ni7 stainless steel MIM feed and the preparation of its products, can solve the problems of wasting materials, time and labor costs, and achieve the effect of changing processing difficulties, improving innovative production levels, and reducing production and processing costs.

Inactive Publication Date: 2019-01-18
DONGGUAN HUAJING POWDER METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Powder metallurgy has inherent advantages. It can directly inject the product blank through the mold, and then perform the degreasing and sintering process to produce metal finished parts. The traditional machine processing plate to produce parts has the problem of wasting materials, time and labor costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: a kind of 1Cr17Ni7 stainless steel MIM feeding material, comprises the following each component, stainless steel powder and forming agent, described stainless steel metal powder and forming extruder both prepare by weight ratio 90:10; Described stainless steel metal The powder is 1Cr17Ni7 stainless steel powder with a particle size of 500 mesh.

[0020] The molding agent includes the following components in parts by weight: 4 parts of TPR material, 4 parts of ethylene-vinyl acetate copolymer, 4 parts of polypropylene wax, 4 parts of high-density polyethylene, 4 parts of nylon, and 74 parts of polyoxymethylene. Among them, TPR material is used to improve the feeding strength and toughness, which is convenient for product demoulding; ethylene-vinyl acetate copolymer has a certain viscosity after heating and melting, which can improve the bonding performance between metal powder and molding agent; polypropylene wax is used as a lubricant, To improve mobility....

Embodiment 2

[0029] Embodiment 2: a kind of 1Cr17Ni7 stainless steel MIM feeding material, comprises the following each component, stainless steel powder and forming agent, described stainless steel metal powder and forming extruder both prepare by the ratio of weight ratio 91:9; Described stainless steel The metal powder is 1Cr17Ni7 stainless steel powder with a particle size of 500 mesh.

[0030] The molding agent includes the following components in parts by weight: 5 parts of TPR material, 5 parts of ethylene-vinyl acetate copolymer, 5 parts of polypropylene wax, 5 parts of high-density polyethylene, 5 parts of nylon, and 75 parts of polyoxymethylene.

[0031] A kind of preparation method of 1Cr17Ni7 stainless steel MIM feeding material, comprises the following steps:

[0032] S1. Pour 1Cr17Ni7 stainless steel metal powder into the mixing chamber of the kneader, and preheat it to 185°C, start the kneader to rotate at a slow speed of 5r / min, and add the forming agent after the temperatu...

Embodiment 3

[0039] Embodiment 3: a kind of 1Cr17Ni7 stainless steel MIM feeding material, comprises the following each component, stainless steel powder and forming agent, described stainless steel metal powder and forming extruder both prepare by weight ratio 92:8; Described stainless steel The metal powder is 1Cr17Ni7 stainless steel powder with a particle size of 500 mesh.

[0040] The molding agent includes the following components in parts by weight: 6 parts of TPR material, 6 parts of ethylene-vinyl acetate copolymer, 6 parts of polypropylene wax, 6 parts of high-density polyethylene, 6 parts of nylon, and 76 parts of polyoxymethylene.

[0041] A kind of preparation method of 1Cr17Ni7 stainless steel MIM feeding material, comprises the following steps:

[0042]S1. Pour 1Cr17Ni7 stainless steel metal powder into the mixing chamber of the kneader, and preheat to 190°C, start the kneader to rotate at a slow speed of 6r / min, and add the forming agent after the temperature of the stainle...

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Abstract

The invention relates to a 1Cr17Ni7 stainless steel MIM feed and a preparation method of its product. The 1Cr17Ni7 stainless steel MIM feed is prepared from the following components: stainless steel powder and a forming agent, wherein the stainless steel metal powder and the forming agent are prepared according to the weight ratio of 90:10 to 92:8. The 1Cr17Ni7 stainless steel MIM feed has the advantages that by means of the 1Cr17Ni7 stainless steel part metal powder injection molding feed and a production process, the shortcomings of difficult processing of traditional 1Cr17Ni7 stainless steel parts, long processing cycle and high cost are overcome, the production and processing costs of complicated 1Cr17Ni7 stainless steel parts are greatly reduced, the feed conforms to the national appeal, energy conservation and emissions reduction are achieved, and the technical innovation production level of domestic manufacturing industry is improved.

Description

technical field [0001] The invention relates to a preparation method of 1Cr17Ni7 stainless steel MIM feed material and its products. Background technique [0002] With the continuous advancement of social science and technology and the vigorous development of global industrialization, the powder metallurgy injection molding process has developed rapidly due to its many advantages. Its technology has been widely used in military, transportation, machinery, electronics, aerospace, aviation and other fields. [0003] MIM feeding is the core head-stage process of metal injection molding process product preparation. It is to mix and fuse metal powder and molding agent in a certain proportion under certain temperature process conditions, then extrude, cut and granulate, and cool into a pellet. Granules, the process of granular feeding. Traditional 1Cr17Ni7 stainless steel parts have the disadvantages of difficult processing, long processing cycle and high processing cost. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/22
CPCB22F3/225B22F1/102B22F1/107
Inventor 张伟明麦嘉瑜谭隆平
Owner DONGGUAN HUAJING POWDER METALLURGY
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