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Method for rolling and forging bearing ring once

A bearing ring, a disposable technology, applied in the direction of bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of large material loss, high energy consumption, low production efficiency, etc., to achieve small material loss, low energy consumption, The effect of high production efficiency

Active Publication Date: 2013-02-06
WUXI MINLIAN AUTOMOBILE PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The blanking process is to cut the bearing steel bar material into material sections by sawing or eagerly cutting according to the technical requirements of the ferrule material. The two blanking methods have the following problems in the actual production process: 1. The bearing steel is in an unannealed state, the saw blade is easy to wear, twist and break, the production efficiency is low, and the weight of the material section is not easy to guarantee. When cutting the material at a high temperature, the surface of the bearing steel is oxidized, and the material loss is large; The wear resistance of the cutting die edge and the automation performance of the feeding equipment are limited under high temperature conditions. The heating temperature is generally controlled between 650 and 900°C. Forging and rolling need to be reheated, which leads to high energy consumption. Repeated oxidation, material loss is large, and the metallographic structure of the ferrule is not easy to guarantee
3. The two blanking methods are to cut the bar into material sections in advance, and the weight of the material section cannot be adjusted according to actual needs during the forging and rolling process

Method used

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  • Method for rolling and forging bearing ring once

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 The method of rolling and forging a bearing ring at one time, the steps are as follows:

[0021] (1) Automatic feeding: put the bearing steel bar on the chain feeder, and the time relay cooperates with the PLC to control the automatic feeding of the beat and mechanical action;

[0022] (2) Intermediate frequency heating: The bearing steel bar material automatically fed through step (1) is heated to 1100°C with an intermediate frequency furnace at a cutting cycle of 8s, and an infrared thermometer is installed at the furnace mouth to control the temperature;

[0023] (3) Press cutting: take the heated bearing steel bar obtained in step (2) and feed it into the press to cut through the cutting die. The cutting press is 1250KN and the temperature is 1100°C;

[0024] (4) Screening: Carry out electronic weighing and screening of the material weight of the bearing steel bar after the material cutting in step (3);

[0025] (5) Upsetting, forming and bottom-cuttin...

Embodiment 2

[0030] Embodiment 2 The method of rolling and forging a bearing ring at one time, the steps are as follows:

[0031] (1) Automatic feeding: put the bearing steel bar on the chain feeder, and the time relay cooperates with the PLC to control the automatic feeding of the beat and mechanical action;

[0032] (2) Intermediate frequency heating: The bearing steel bar material automatically fed through step (1) is heated to 1150°C with an intermediate frequency furnace at a cutting cycle of 15s, and an infrared thermometer is installed at the furnace mouth to control the temperature;

[0033] (3) Press cutting: take the heated bearing steel bar obtained in step (2) and feed it into the press to cut through the cutting die. The cutting press is 1600KN and the temperature is 1150°C;

[0034] (4) Screening: Carry out electronic weighing and screening of the material weight of the bearing steel bar after the material cutting in step (3);

[0035] (5) Upsetting, forming and bottom-cutti...

Embodiment 3

[0040] Embodiment 3 The method of rolling and forging a bearing ring at one time, the steps are as follows:

[0041] (1) Automatic feeding: put the bearing steel bar on the chain feeder, and the time relay cooperates with the PLC to control the automatic feeding of the beat and mechanical action;

[0042] (2) Intermediate frequency heating: The bearing steel bar material automatically fed through step (1) is heated to 1150°C with an intermediate frequency furnace at a cutting cycle of 10s, and an infrared thermometer is installed at the furnace mouth to control the temperature;

[0043] (3) Press cutting: take the heated bearing steel bar obtained in step (2) and feed it into the press to cut through the cutting die. The cutting press is 1600KN and the temperature is 1125°C;

[0044] (4) Screening: Carry out electronic weighing and screening of the material weight of the bearing steel bar after the material cutting in step (3);

[0045](5) Upsetting, forming and bottom-cuttin...

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Abstract

The invention relates to a method for rolling and forging a bearing ring once and belongs to the technical field of professional forging of the bearing ring. A new process for finishing baiting, rolling and forging by heating once is designed by a new material with good wear-resisting property under a high-temperature condition by selecting a feeding device with good automatic performance and a cutting die edge. Thus, the production efficiency is improved; the material loss and energy consumption are reduced; the weight of a feed stage can be adjusted according to the actual requirements in the forging and rolling processes, and the quality of the bearing ring is ensured.

Description

technical field [0001] The invention relates to a method for one-time rolling and forging a bearing ring, which belongs to the technical field of professional forging of bearing rings. Background technique [0002] Bearing blank processing is the first process of bearing production. The quality of the ring blank and the level of productivity will have an important impact on the quality and performance of the bearing product and the economic effect of the enterprise. This is because the quality of the blank (including the molding method of the blank) determines the material utilization rate of the bearing. The internal quality of the ring includes the density of the material, the streamline division of the metal fiber, the grain size and the deformation heat treatment, etc., which have a great impact on the bearing life. have a greater impact. The rough size range and poor geometric shape accuracy are the main reasons for the high scrap rate, the failure of normal automatic ...

Claims

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Application Information

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IPC IPC(8): B23P15/14B21H1/12
Inventor 邵济民
Owner WUXI MINLIAN AUTOMOBILE PARTS CO LTD