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Forging process for GCr15 roller sleeve

A roll sleeve and process technology, which is applied in the forging process field of GCr15 roll sleeve, can solve problems such as unevenness, bending wall thickness, and long length, and achieve the effects of improving the performance of forgings, improving uniformity, and avoiding white spots

Active Publication Date: 2016-11-02
ANHUI RUIJIE FORGING
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  • Claims
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AI Technical Summary

Problems solved by technology

However, in the forging of GCr15 roller sleeve forgings, due to the long length and thin wall thickness required by the process, it is difficult to forge such a length of roller sleeve in the previous forging technology. Because the forging technology is not perfect, it is easy to produce white in the sleeve during forging. points, and local bending and uneven wall thickness during forging

Method used

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Embodiment Construction

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below.

[0022] A kind of forging process of GCr15 roller sleeve, its forging process is:

[0023] Step 1. Forging heating: Put the preheated GCr15 material into a high-temperature melting furnace for heating. When it reaches 1150°C, enter a constant temperature for heat preservation for forging, and heat the forging above the forging temperature to reduce the occurrence of forging transfer. The cooling temperature difference can increase the forging range during forging.

[0024] Step 2. Roller sleeve four-fire forming forging: In the forging of GCr15 roller sleeve, its forging process is divided into four-fire forming, which are blank outsetting-punching-drawing-long-rolling shaping,

[0025] (5) Blank upsetting: The forgings heated to the required temperature are taken out, and then the forgings a...

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Abstract

The invention aims to provide a forging process for a GCr15 roller sleeve. The forging process comprises the steps that firstly, a forge piece is heated; secondly, the roller sleeve is subjected to four-time heating forming forging, specifically, four-time heating forming is adopted as the forging technique of forging of the GCr15 roller sleeve, namely ejection and upsetting, punching, drawing-out and round rolling reshaping; and thirdly, annealing and cooling are conducted. The machining process is improved, so that the length of drawing-out and punching during forging is prolonged, straightening of the forge piece during punching forging is improved, the uniformity of the wall thickness is improved, white dots in the sleeve are prevented, and the performance of the forge piece is improved.

Description

technical field [0001] The present invention relates to the field of forging processing and auxiliary parts, in particular to the improvement of the forging processing method for forging roller sleeves, and in particular to a forging process of GCr15 roller sleeves. Background technique [0002] GCr15 material is high-carbon high-chromium bearing steel with good comprehensive performance. However, in the forging of GCr15 roller sleeve forgings, due to the long length and thin wall thickness required by the process, it is difficult to forge such a length of roller sleeve in the previous forging technology. Because the forging technology is not perfect, it is easy to produce white in the sleeve during forging. points, as well as local bending and uneven wall thickness during forging. [0003] Therefore, a forging process of GCr15 roller sleeve is provided, in order to improve the processing technology to extend the length of drawing and punching during forging, improve the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21J5/06B21J5/10B21J1/06B21K1/76
CPCB21J1/06B21J5/002B21J5/06B21J5/10B21K1/761
Inventor 吕美莲刘春超冯宝倪吕俊吕诚
Owner ANHUI RUIJIE FORGING
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