Supercharge Your Innovation With Domain-Expert AI Agents!

Technology for manufacturing gear output shaft by means of powder metallurgy

A powder metallurgy and output shaft technology, applied in the field of powder metallurgy, can solve the problems of lack of guarantee of product performance and quality, increased labor cost, covering a layer of putty, etc., to reduce production raw materials, improve product surface quality, and improve the effect of adverse effects

Inactive Publication Date: 2015-01-07
TAICANG JINLIDE POWDER METALLURGY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this process, in order to reduce costs, many companies adopt methods such as streamlining the formula or reducing the process. Although the streamlined formula saves costs, it lacks guarantee for product performance and quality, and can only be used for some of the lowest-end products. Moreover, in this process, For machining that must be processed with turning oil, it is easy to cause the surface of the part to be covered with a layer of putty after heat treatment, which affects the appearance. If it is to be removed, it must be brushed off, resulting in an increase in labor costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A process for manufacturing a gear output shaft by powder metallurgy, comprising the following steps:

[0022] (1) Stirring: Add the basic iron powder to other formula powders and stir until evenly mixed.

[0023] (2) 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. The structure of the forming die is to eat the second punch, and the offset size is directly formed at the same time. Since the size of the offset part of the lower punch is fixed, in order to supplement the filling amount of the forming powder, the next punch is added, and the next punch is filled and top-pressed. The density of the offset part is increased, thereby increasing the bonding strength of the product. After forming, the part is ejected by the next punch to assist demoulding.

[0024] (3) Sintering: Place the green product on a carbon plate, sinter in a mesh belt sintering furnace, adjust the sinter...

Embodiment 2

[0030] In this example, except for the following conditions, others are the same as in Example 1:

[0031] Specifically, the sintering temperature of each stage is 690°C for the first stage, 790°C for the second stage, 960°C for the third stage, 1110°C for the fourth stage, 1140°C for the fifth stage, and 1140°C for the sixth stage. It takes 3.5 hours for the product green embryo to be discharged from the furnace.

Embodiment 3

[0033] In this example, except for the following conditions, others are the same as in Example 1:

[0034] Specifically, the sintering temperature of each stage is 680°C in the first stage, 780°C in the second stage, 950°C in the third stage, 1100°C in the fourth stage, 1130°C in the fifth stage, and 1130°C in the sixth stage. It takes 3.75 hours for the product green embryo to come out of the furnace from entering the furnace.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a technology for manufacturing a gear output shaft by means of powder metallurgy. The technology comprises the steps of conducting one-time compression molding, conducting sintering for 3.5-4 h at a temperature ranging from 670 DEG C to 1140 DEG C, conducting heat treatment for 1-3 h at a temperature ranging from 840 DEG C to 860 DEG C, conducting quenching with oil the temperature of which is lower than 60 DEG C, conducting tempering for 1-2 h at a temperature ranging from 200 DEG C to 220 DEG C, conducting grinding and conducting cleaning and oil immersion. According to the technology, green is obtained through one-time compression molding by means of a molding die, offset dimension alignment and forming are conducted at the same time during compression molding, technological processes are simplified, the surface quality of products is improved, the adverse impact of original technologies is avoided, the consumption of production materials is reduced, production efficiency is improved, and production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a process for manufacturing a gear output shaft by powder metallurgy. Background technique [0002] At present, the process of manufacturing gear output shaft in powder metallurgy industry is mostly stirring-forming-sintering-packaging. In this process, in order to reduce costs, many companies adopt methods such as streamlining the formula or reducing the process. Although the streamlined formula saves costs, it lacks guarantee for product performance and quality, and can only be used for some of the lowest-end products. Moreover, in this process, Turning oil must be used during machining, which will easily cause the surface of the parts to be covered with a layer of putty after heat treatment, which will affect the appearance. If it is to be removed, it must be brushed off, resulting in an increase in labor costs. Contents of the invention [0003] In view of this, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/16B22F5/00B22F3/24C21D9/28C21D1/18
Inventor 杨立冬杨锦明徐道金
Owner TAICANG JINLIDE POWDER METALLURGY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com