Preparation technology of intermediate blank of ring piece with C-type cross section

A preparation process and billet technology, which is applied in the field of intermediate billet preparation for C-section ring pieces, can solve the problems of difficult ring rolling process, excessive contact surface knots, and relatively high tonnage requirements of ring rolling mill equipment, and can reduce tonnage requirements. Effect

Inactive Publication Date: 2019-03-19
GUIZHOU AEROSPACE XINLI CASTINGSAND FORGINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cross-section is relatively complex, and the protruding and concave parts are relatively deep. When the ring billet is formed with a regular rectangular cross-section, the contact surface between the billet and the core roll die is too large, and the tonnage requirements for the ring rolling mill equipment are relatively high, which will make the ring rolling process difficult.

Method used

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  • Preparation technology of intermediate blank of ring piece with C-type cross section
  • Preparation technology of intermediate blank of ring piece with C-type cross section
  • Preparation technology of intermediate blank of ring piece with C-type cross section

Examples

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Effect test

Embodiment 1

[0024] In this embodiment, a process for preparing the intermediate blank of a C-shaped cross-section ring, the steps of obtaining the workpiece by forging an alloy alloy ingot are as follows:

[0025] ①The alloy ingot is heated to 1160°C;

[0026] ② Upsetting the alloy ingot to 2 / 5 of the original height;

[0027] ③Punch the blank after upsetting, and then expand the hole to the diameter of the ring rolling machine +95mm;

[0028] ④ Use a ring rolling machine to grind the ring to the required size of the workpiece, and the deformation is 42%;

[0029] ⑤ Cool to room temperature.

[0030] The intermediate billet produced by the above process is stretched and finally forged by using the plastic deformation of the material. The yield strength of the forged ring forging reaches 361MPa, and the V-shaped notch Charpy impact test is done at -20°C. The impact energy The average value is 125J.

Embodiment 2

[0032] A process for preparing a C-shaped cross-section ring piece intermediate blank material. The process of obtaining a workpiece by forging an alloy alloy ingot is as follows:

[0033] ①The alloy ingot is heated to 1170°C;

[0034] ② Upsetting the alloy ingot to 1 / 2 of the original height;

[0035] ③Punch the blank after upsetting, and then expand the hole to the diameter of the ring rolling machine +100mm;

[0036] ④ The ring rolling machine is used to grind the ring to the required size of the workpiece, and the deformation is 48%;

[0037] ⑤ Air-cool to room temperature.

[0038] The intermediate blank produced by the above process is stretched and finally forged by using the plastic deformation of the material. The yield strength of the forged ring forging reaches 364MPa, and the Charpy impact test of the V-shaped notch is performed at -20°C. The average value is 170J.

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Abstract

The invention provides a preparation technology of an intermediate blank of a ring piece with a C-type cross section. An alloy ingot is selected and subjected to forging to obtain a workpiece throughforging. According to the preparation technology of the intermediate blank of the ring piece with the C-type cross section, a ring rolling mill is used for preparing the intermediate blank, the tonnage requirement of ring rolling equipment is reduced, and the yield strength of the prepared workpiece can achieve over 350Mpa.

Description

technical field [0001] The invention relates to a process for preparing an intermediate billet of a C-shaped cross-section ring. Background technique [0002] C-section forging is a key part of a certain equipment, such as figure 1 As shown, due to the irregular shape and many irregular-shaped surfaces, forging is more difficult. The cross-section is relatively complex, and the protruding and concave parts are relatively deep. When the ring billet is formed with a regular rectangular cross-section, the contact surface between the billet and the core roll die is too large, and the tonnage requirements for the ring rolling mill equipment are relatively high, which will make the ring rolling process difficult. . Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides a process for preparing intermediate blanks of C-shaped cross-section rings. [0004] The present invention is achieved through the following...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21H1/06B21J5/08B21D28/34
Inventor 赵晓光张明桥冉雄波万东海张令
Owner GUIZHOU AEROSPACE XINLI CASTINGSAND FORGINGS
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