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Method for forging bearing ring

A bearing ring and forging technology, which is applied in the direction of engine components, mechanical equipment, etc., can solve the problems of increasing production costs and limited utilization of raw materials, and achieve the effects of precise cutting, good strength and long service life

Inactive Publication Date: 2015-04-08
WUHU JINLONG MOLD FORGING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of advanced production technology and production equipment, the utilization of raw materials involved in product production is very limited, which increases the production cost of enterprises.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Step (1) Material preparation: cut the long round steel bar into sections according to the required weight, and the weight of each section is 600g;

[0022] Step (2) Forging molding: heat the material section to 1000-1050°C with a heating furnace, and forge it in a high-speed forging equipment at a speed of 250 strokes / min. The forged blank is automatically conveyed out and cooled while being conveyed. Use spray cooling to control the cooling rate at 120-140°C / min. After the blank is completely cooled, remove the thin oxide layer of the semi-finished raceway due to high temperature in time, then cut it, and finally pull it to the annealing furnace with a forklift for balling Annealing; then forging on the press equipment, under the action of the upper and lower upsetting of the press, it becomes a blank with a shape and size that meets the requirements;

[0023] Step (3) Post-forging treatment: Carry out rough quality inspection through the noise system. The detection s...

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Abstract

The invention provides a method for forging a bearing ring, and relates to the field of manufacturing of mechanical metal, in particular to a technology for bearing forging production. The method comprises the steps of material preparation: blanking 600g of each section of a round steel long bar; forging forming: heating the material section by a heating furnace, hammering the material section by high-speed hammering equipment, automatically conveying a hammered blank while cooling, performing spraying cooling to remove a thin oxide layer generated on a semi-finished ball track under high temperature in time, then performing cutting and final annealing, and performing forging on press machine equipment; treatment after forging: removing waste products and repairing reprocessed products by detection; jacking: performing combined cutting in a punching hole to obtain a coarse bearing ring blank. In the forging process, precise temperature control is adopted, so that the manufactured ring is extremely high in intensity, and a finally manufactured bearing is anti-abrasion and long in service; meanwhile, the oxide layer can be removed in time in the forging process, and cutting can be precisely carried out.

Description

technical field [0001] The invention relates to the field of mechanical metal manufacturing, in particular to a bearing forging production process. Background technique [0002] The forging of bearing rings is a typical type of processing in mechanical forging. Most bearing rings are made of high-carbon chromium bearing steel (GCr15 and GCr15SiMn and ZGCr15 and ZGCr15SiMn), and the hardness of the parts is as follows: the rings made of GCr15 and ZGCr15 are HRc61-65; the rings made of GCr15SiMn and ZGCr15SiMn The ring is HRc60-64; the bearings made of high carbon steel chromium bearing steel are generally suitable for the working temperature range of -40-130 ℃, and the oil and grease lubrication is normal. It can meet the requirements of general machinery. After high-carbon chromium bearing steel bearing parts are tempered at high temperature, their adaptable working temperature can be as high as 250°C. With the advancement of smelting technology, different smelting me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/04
CPCB21K1/04
Inventor 李大志
Owner WUHU JINLONG MOLD FORGING
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