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Inner step profile section ring parts rolling forming method

A technology of inner steps and rings, which is applied in the field of rolling forming of rings with inner steps, can solve the problems of low material utilization, repeated heating of rings, and low production efficiency, so as to improve metal structure and performance and reduce heating times , the effect of improving production efficiency

Inactive Publication Date: 2007-10-17
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 rate; 2) low production efficiency and high labor intensity; 3) rings need repeated heating and high energy consumption; 4) high production cost

Method used

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  • Inner step profile section ring parts rolling forming method
  • Inner step profile section ring parts rolling forming method
  • Inner step profile section ring parts rolling forming method

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Experimental program
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Embodiment Construction

[0020] As shown in Fig. 1, Fig. 2, Fig. 3, and Fig. 4, the method for rolling and forming the inner step cross-section ring includes the following steps: 1). Cutting: the bar is sawed into material sections, and the length of the material section is L=(1~5)(B b +B s ), B b is the axial dimension of the large hole part of the ring forging, B s is the axial dimension of the small hole part of the ring forging, and the diameter of the material section is determined according to the condition that the volume of the ring forging is equal to the volume of the material section.

[0021] 2). Billet making: uniformly heating the material section from room temperature to the thermal deformation temperature of high plasticity and low resistance, and then upsetting, punching, and punching the hot material section to make a ring blank for rolling;

[0022] The material section is uniformly heated from room temperature to the heat distortion temperature of high plasticity and low resista...

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Abstract

The invention relates to a rolling forming method of a ring with inner step section. The rolling forming method of a ring with inner step section is characterized in that it comprises the following steps: 1) blanking; 2) preforming: uniformly heating the material section from room temperature to a heat distortion temperature with high plasticity and low resistance, then upsetting, piercing and stamping the material section in thermal state to fabricate ring blank for rolling; 3) rolling by a ring rolling mill: heating the ring blank in a heating furnace, taking out when the temperature reaches the heat distortion temperature and putting the ring blank into the ring rolling mill to carry out rolling, during the rolling process, excellent lubrication is maintained between the ring blank and the rollers, and the ring forging is formed by multiple rolling the ring blank; 4) mechanical cutting processing the ring forging to form the ring with inner step section. Accordingly, the invention has advantages 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 inner stepped section. Background technique [0002] At present, rings with inner step cross-section are usually completed by forging hole reaming and mechanical cutting, that is, rings with rectangular cross-section are processed by forging and reaming first, and then the rings with rectangular cross-section are processed into rings with inner step cross-section by mechanical cutting . The processing process is: 1) Upsetting, 2) Punching, 3) Punch reaming, 4) Flat end face, 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] The object of the present invention is to provide a low-cost...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21H1/06B21J1/04C21D9/70C21D11/00
Inventor 华林赵玉民毛华杰钱东升
Owner WUHAN UNIV OF TECH
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