Process for manufacturing bearing ring

A manufacturing process and technology of bearing rings, which is applied in the field of manufacturing process of bearing rings, can solve the problems that the hardness and anti-corrosion performance of finished products are difficult to meet the requirements, the processing time of bearing rings is long, and the process is cumbersome, etc., so as to improve the hardness control The effect of improving the ability and anti-corrosion performance and improving the accuracy of groove shape

Active Publication Date: 2009-11-11
嵊州市美亚特种轴承厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the widely used technological process for producing bearing rings is: forging—pickling—heat rolling—cooling—cutting—forging—annealing—cutting—quenching—tempering— - Grinding - Finished product inspection, the main disadvantage is that the process is too c

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Select the bar of 3Cr13 material, enter it into a 200T press, perform hot forging at 1100℃, and then send it to an oxygen-free annealing furnace for annealing at an annealing temperature of 875℃. After 6 hours of heat preservation, it will be turned on an instrument lathe, and then Carry out vacuum heat treatment in continuous bright quenching furnace, quenching temperature is 1065℃, tempering temperature is 650℃, water cooling after tempering, and then sent to double end face, automatic groove grinder, after double end face, centerless cylindrical grinding, automatic groove After several grinding processes, such as grinding and automatic internal grinding, enter the assembly process.

Embodiment 2

[0014] Select the bar of 3Cr13 material, enter the 200T press, perform hot forging at 1125℃, and then send it to the oxygen-free annealing furnace to anneal, the annealing temperature is 880℃, after 5 hours of heat preservation, it is turned on the instrument lathe, and then Carry out vacuum heat treatment in continuous bright quenching furnace, quenching temperature is 1050℃, tempering temperature is 680℃, after tempering, water cooling, and then sent to double end face, automatic groove grinder, after double end face, centerless cylindrical grinding, automatic groove After several grinding processes, such as grinding and automatic internal grinding, enter the assembly process.

Embodiment 3

[0016] Select the bar of 3Cr13 material, enter it into a 200T press, perform hot forging at 1150℃, and then send it to an oxygen-free annealing furnace for annealing at 880℃, after 5 hours of heat preservation, turn it on an instrument lathe, and then Carry out vacuum heat treatment in continuous bright quenching furnace, quenching temperature is 1080℃, tempering temperature is 680℃, water cooling after tempering, and then sent to double end face, automatic groove grinder, after double end face, centerless cylindrical grinding, automatic groove After several grinding processes, such as grinding and automatic internal grinding, enter the assembly process.

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PUM

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Abstract

The invention discloses a process for manufacturing a bearing ring, which belongs to the technical field of machining. The process comprises the following steps: manufacturing a bar stock, hot forging, annealing, turning, heat treating, grinding, assembling a finished product, and the like. A 3Crl3 material is used so as to meet the requirements on high hardness and wearing resistance of a product, and the convenience of machining the bar stock and the rust proof and anticorrosive performance of the finished product are simultaneously improved. Heat treatment is carried out for the bar stock in a continuous type bright quenching furnace under a vacuum condition, wherein the bar stock is firstly quenched at 1050-1080 DEG C and then is tempered at 600-680 DEG C; and after being tempered, the bar stock is cooled by water. The process greatly improves the hardness control capacity of the bar stock by controlling the quenching temperature, the deformation of the bar stock is improved to 0.0 5mm from 0.2 mm, a good foundation is provided for the machining the bearing ring in a subsequent working procedure, the stability of an interior tissue of the baring ring is guaranteed, the brittleness is reduced and the service life is prolonged.

Description

Technical field [0001] The invention relates to a manufacturing process of a bearing, in particular to a manufacturing process of a bearing ring. Background technique [0002] In the prior art, the widely used process flow for producing bearing rings is: forging-pickling-heating and rolling-cooling-cutting-forging-annealing-cutting-quenching-tempering- —Grinding—finished product inspection. The main disadvantage is that the process flow is too cumbersome, resulting in long processing time of the bearing ring and high manufacturing cost. Due to the selection of materials and the control of heat treatment process, the prepared finished product is in hardness and anti-corrosion performance. It is difficult to meet the requirements. Summary of the invention [0003] In order to solve the above-mentioned defects of the prior art, the purpose of the present invention is to provide a simple process flow and a process for preparing a bearing ring with higher hardness and anti-corrosion ...

Claims

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Application Information

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IPC IPC(8): F16C33/58
Inventor 周友华周友峰郑亦鑫
Owner 嵊州市美亚特种轴承厂
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