Precision bearing ring for automobile and machining technology thereof

A kind of precision bearing and processing technology, applied in the direction of bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of no longer use, waste, etc., to extend service life, increase cleanliness, improve hardness and wear resistance. Effect

Inactive Publication Date: 2018-08-31
江苏保捷精锻有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the long-term operation of the bearing, the outer ring of the bearing is a vulnerable part, and it cannot be used after damage, resulting in a large waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] A processing technology for precision bearing rings for automobiles, including the following steps: (a) using a medium-frequency induction heating furnace to heat the billet to 1150°C to improve plasticity, reduce deformation resistance, make the billet easy to flow form, and obtain a good structure and Mechanical properties; (b) select the die ring according to the size of the bearing outer ring to be processed, and use a high-speed upsetting machine for forging; (c) perform spheroidizing annealing in a roller bottom type continuous nitrogen-based protective atmosphere furnace after the mold is released, The temperature range of the annealing process is as follows: Zone 1: 760~780℃, Zone 2: 805~815℃, Zone 3: 795~805℃, Zone 4: 785~805℃, Zone 5: 755~775℃, Zone 6: 715 ~735°C, Zone 7: 705~725°C, Zone 8: 675~695°C; (d) use shot blasting machine to remove oxide skin and oxide film on the surface, and improve surface roughness; (e) adopt cold The rolling machine is set at a r...

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PUM

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Abstract

The invention belongs to the technical field of manufacturing of precision bearings matched with important main machines, and particularly relates to a machining technology for a precision bearing ring for an automobile. The machining technology comprises the following steps that (a) a blank is heated by adopting a medium-frequency induction heating furnace; (b) forging is carried out by adoptinga high-speed upsetting forging machine according to a mold ring; (c) spheroidizing annealing is carried out in a continuous nitrogen-based protective atmosphere furnace after demolding; (d) shot blasting is carried out; (e) cold rolling is carried out for 7-10 seconds; (f) carrying out cleaning treatment; and (g) appearance sorting is carried out after cold rolling. The machining technology has the beneficial effects that the machining technology can be improved by combining a forging technology and a cold rolling technology, optimizing the technological conditions and performing automatic operation, and the hardness, the wear resistance and other performances of the bearing outer ring can be further improved; no tiny waste exists on the bearing outer ring through cleaning treatment, and therefore the cleanliness can be improved, the service life of the precision bearing outer ring can be prolonged, and the grade requirement of a precision bearing workpiece can be met.

Description

technical field [0001] The invention belongs to the technical field of manufacturing precision bearings for supporting important main engines, and in particular relates to a processing technology of precision bearing rings for automobiles. Background technique [0002] The outer ring of the bearing is usually fixed on the housing of the bearing or the machine, and plays the role of supporting the rolling elements. During the long-term operation and use of the bearing, the outer ring of the bearing is a vulnerable part, and it cannot be used after being damaged, resulting in great waste. Therefore, the strength and wear resistance of the bearing outer ring are the key. When processing the bearing outer ring, the selected material and processing technology determine the strength and wear resistance of the bearing outer ring. For precision bearings, the bearing outer ring Size, material, and processing technology determine its precision level. Contents of the invention [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00F16C33/00
CPCB23P15/003F16C33/00
Inventor 廖春惠葛泓乐建朝
Owner 江苏保捷精锻有限公司
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