Technology for machining positioning rings

A processing technology and positioning ring technology, applied in the direction of metal material coating process, manufacturing tools, coatings, etc., can solve the problems of insufficient wear resistance, low hardness of positioning ring, etc., to reduce performance, reduce notch sensitivity, eliminate Effect of residual internal stress

Inactive Publication Date: 2016-10-05
重庆沁煌实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the fact that the existing positioning ring has always had problems such as low har

Method used

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Embodiment Construction

[0016] Below in conjunction with embodiment the present invention will be further described, and its operating steps are as follows:

[0017] A positioning ring processing technology, the processing technology comprises the following steps:

[0018] (1) Process flow: blanking→forging→annealing→machining→quenching and tempering→machining→ion nitriding→inspection→finished product;

[0019] (2) Material selection: 38CrMnAl steel is selected;

[0020] (3) Forging: heating temperature 1100-1150°C, initial forging temperature 1150-1250°C, final forging temperature > 880°C;

[0021] (4) Annealing: heating with furnace temperature, heating temperature 940-980 ℃, holding time 2-2.5h, cooling with furnace, cooling medium air;

[0022] (5) Machining: rough machining to obtain rough parts;

[0023] (6) Quenching and tempering treatment: quenching treatment, heating furnace to 960-990°C, heating medium nitrogen, holding time 3-3.5h, quenching oil and cooling through; high temperature te...

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PUM

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Abstract

The invention discloses a technology for machining positioning rings. The technology is characterized by comprising steps of carrying out technological processes of discharging, forging, annealing, machining, tempering, machining, ion nitriding, inspecting and finished product acquiring and the like. The technology for machining the positioning rings has the advantages that the comprehensive performance of the positioning rings can be improved, and the service lives of the positioning rings can be prolonged.

Description

technical field [0001] The invention belongs to the field of processing technology, in particular to a positioning ring processing technology. Background technique [0002] The positioning ring is an indispensable part in the rotating parts. While it runs at high speed, it also bears high and concentrated alternating loads. The contact stress is large, resulting in a strong friction phenomenon. The performance of the positioning ring directly determines the life of the machine. The positioning ring requires high surface hardness, wear resistance, corrosion resistance, high precision requirements, small deformation after heat treatment, and moderate impact load. The main failure mode is wear. However, in view of the problems of low hardness and insufficient wear resistance of existing positioning rings, the processing technology needs to be further optimized. Contents of the invention [0003] In view of the deficiencies in the prior art, the purpose of the present invent...

Claims

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Application Information

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IPC IPC(8): B23P15/00C21D9/40C21D1/26C21D1/25C23C8/38
Inventor 赵伟
Owner 重庆沁煌实业有限公司
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