Process for rolling and forming external step section ring piece

A technology of outer steps and rings, applied in metal rolling, metal rolling, etc., can solve the problems of low material utilization, repeated heating of rings, large machining allowance, etc., to improve metal structure and performance, reduce heating The effect of increasing the number of times and increasing productivity

Inactive Publication Date: 2005-03-02
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of this process for producing outer stepped section rings are: 1) large machining allowance and low material utilization rat

Method used

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  • Process for rolling and forming external step section ring piece
  • Process for rolling and forming external step section ring piece
  • Process for rolling and forming external step section ring piece

Examples

Experimental program
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Embodiment Construction

[0016] The method for rolling and forming the outer step cross-section ring is realized according to the following steps: 1). Cutting the material: sawing the bar into material sections, and the length of the material sections is L=(1~3)(B 1 +B 2 ), B 1 is the axial dimension of the large ring part of the blank, B 2 is the axial dimension of the small ring part of the blank.

[0017] 2). Billet making: uniformly heat the material segment from room temperature to the heat deformation temperature of high plasticity and low resistance, then upsetting, punching and punching the hot material segment to make a ring blank for rolling.

[0018] The material section is uniformly heated from room temperature to the heat distortion temperature of high plasticity and low resistance. The heat distortion temperature of the aluminum alloy ring is 550°C-350°C; the heat distortion temperature of the steel material ring is 1200°C-800°C.

[0019] The outer circular edge of the blank forms an ...

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Abstract

The process of rolling to form ring with external stepped cross section includes the following steps: sawing rod into section; making ring blank via homogeneous heating from room temperature to the heat deforming temperature, upsetting, punching hole and punching coating; rolling the blank heated in a heating furnace to 350-550 deg.c for aluminum alloy or 800-1200 deg.c for iron and steel material via rolling inside groove while maintaining good lubricating state; and cutting mechanically into the product. The present invention has the features of low cost and high production efficiency.

Description

technical field [0001] The invention relates to a method for rolling and forming a ring with an outer stepped section. Background technique [0002] At present, rings with outer stepped sections are usually completed by horse-frame reaming and mechanical cutting, that is, rings with rectangular cross-sections are processed through horse-frame reaming first, and then the rings with rectangular cross-sections are machined into outer stepped cross-sections by mechanical cutting ring pieces. The processing process is: 1) Upsetting, 2) Punching, 3) Punch reaming, 4) Mandrel reaming, 5) Mechanical cutting. The main problems of this process for producing outer stepped section rings are: 1) large machining allowance and low material utilization rate; 2) low production efficiency and high labor intensity; 3) rings need repeated heating and high energy consumption; 4) Production costs are high. Contents of the invention [0003] In view of the above disadvantages, the object of t...

Claims

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Application Information

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IPC IPC(8): B21B5/00B21H1/06
Inventor 华林赵玉民毛华杰吴燕翔
Owner WUHAN UNIV OF TECH
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