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Preparation process of oil pump driving gear based on powder metallurgy compression molding

A powder metallurgy pressing and driving gear technology, applied in the field of gear manufacturing, can solve the problems of complicated processing procedures, omissions, poor consistency between the geometric dimensions and performance of the machining precision gears, etc., and achieve the effects of good dimensional consistency, improved quality and good strength

Inactive Publication Date: 2021-01-15
重庆市尔汉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the processing methods of gears include milling, grinding, shaping, shaving and hobbing. When manufacturing gears, forgings or steel are used as raw materials. In actual production, the processing procedures are complicated and easy to cause omissions. Poor consistency between geometry and performance

Method used

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  • Preparation process of oil pump driving gear based on powder metallurgy compression molding

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Embodiment Construction

[0043] In order to further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention, and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments, for reference Those of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0044] According to an embodiment of the present invention, a preparation process of an oil pump driving gear based on powder metallurgy compression molding is provided.

[0045] Now in conjunction with accompanying drawing and specific embodiment the present invention is further described, as figure 1 As shown, according to the prepar...

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Abstract

The invention discloses a preparation process of an oil pump driving gear based on powder metallurgy compression molding. The process comprises the following steps of S1, material selection: selectinga proper metal powder formula according to technical parameter requirements; S2, manufacturing a pressing mold according to gear technical parameters; S3, putting blended technical powder into the mold, and performing compression molding on a press machine in a vibration environment; S4, sintering a blank subjected to compression molding; S5, carrying out annealing treatment on the sintered blank; S6, trimming the annealed blank until the size requirement is met; S7, carrying out heat treatment on the gear blank; and S8, carrying out medium-frequency quenching on teeth of the gear blank. Thepreparation process of the oil pump driving gear based on powder metallurgy compression molding has the beneficial effects that C, Ni, Cr, Mn, Ti and other metals are added into Fe powder to form medium-carbon alloy steel, and the medium-carbon alloy steel can have good strength, hardness and toughness after heat treatment, the surface is wear-resistant, and the core part has good toughness and impact resistance.

Description

technical field [0001] The invention relates to the technical field of gear manufacturing, in particular to a preparation process of an oil pump driving gear based on powder metallurgy compression molding. Background technique [0002] Powder metallurgy technology is a processing technology that uses a metal powder as a raw material to produce various spare parts through pressing and sintering. Powder metallurgy forming technology can be divided into two types: metal powder compression molding and metal powder injection molding. As a widely used precision forming technology, metal powder compression molding is used to produce driving gears of oil pumps. It has the advantages of high efficiency, clean and efficient manufacturing process, low production cost, and can manufacture products with complex shapes and difficult processing. Powder metallurgy technology realizes the unique properties of parts through flexible and variable material formulations, especially suitable for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/08B22F3/093B22F3/10B22F3/24B22F1/00C22C38/50C22C38/04C22C33/02C21D9/32C21D1/26C21D1/18C21D1/773C21D6/04
CPCB22F5/08B22F3/093B22F3/10B22F3/24C22C38/50C22C38/04C22C33/0264C21D9/32C21D1/26C21D1/18C21D1/773C21D6/04B22F2003/248B22F2998/10B22F1/10
Inventor 刘长荣
Owner 重庆市尔汉科技有限公司
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