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Mirror face stainless steel bearing and process thereof

A technology of mirror surface stainless steel and processing technology, which is applied in the direction of bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of poor corrosion resistance, loss of bearing function, environmental pollution, etc., to improve surface finish, increase strength, enhance the aesthetic effect

Inactive Publication Date: 2008-10-08
余姚市曙光不锈钢轴承有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It has been proved in a large number of practical use that the mechanical properties of ordinary bearings are very good, but there are certain limitations in use, such as being used in harsh environments and special industries, and the service life is very short.
The main reason is that the corrosion resistance is not good, which leads to rust and loses the proper function of the bearing, and at the same time causes pollution to the use environment

Method used

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  • Mirror face stainless steel bearing and process thereof
  • Mirror face stainless steel bearing and process thereof
  • Mirror face stainless steel bearing and process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 6201ZZ mirror surface stainless steel bearing and processing technology (dimensions 12×32×10)

[0052] The 9Cr18 stainless steel bar is turned into a ring shape according to the feeding process regulations. After soft grinding, surface grinding and cylindrical grinding, it enters the turning process, and the acute angle is removed, the tooth socket is turned, the inner and outer ring grooves are turned, and it enters the heat treatment. 6201ZZ is a small deep groove ball bearing. The walls of the two rings are not very thick, and the temperature is not easy to be too high during heat treatment. The processing technology is: first, the inner and outer rings of the bearing are preheated to 850-860 ° C, kept for 12 hours and then heated to Heat at 1090-1100°C for 7 hours, cool the oil to 40°C and put it into the freezer for cryogenic treatment to -75°C for 1 hour, then heat it in a splash furnace to 150-160°C for 3 hours, then perform sandblasting , under the action of hig...

Embodiment 2

[0055] 6306ZZ mirror surface stainless steel bearing and processing technology (dimensions 30×72×19)

[0056] The 9Cr18 stainless steel bar is turned into a ring shape according to the feeding process regulations. After soft grinding, surface grinding and cylindrical grinding, it enters the turning process for submitting to the turning process, and the acute angle is removed, the tooth socket is turned, the inner and outer ring grooves are turned, and it enters the heat treatment. 6306ZZ is a medium-sized deep groove ball bearing, the wall of the two rings is thicker, the temperature can be higher during heat treatment, and the holding time can be longer. The processing technology is: first preheat the inner and outer rings of the bearing to 850-860°C, keep it warm for 16 hours, then heat it to 1090-1100°C and keep it warm for 10 hours, then cool the oil to 40°C and put it into the refrigeration equipment for cryogenic treatment to -80°C The holding time is 1.5 hours, and then...

Embodiment 3

[0058] 61905ZZ mirror stainless steel bearing and processing technology (dimensions 25×42×9)

[0059] The 9Cr18 stainless steel bar is turned into a ring shape according to the feeding process regulations. After soft grinding, surface grinding and cylindrical grinding, it enters the turning process for submitting to the turning process, and the acute angle is removed, the tooth socket is turned, the inner and outer ring grooves are turned, and it enters the heat treatment. 61905ZZ is a light series deep groove ball bearing. The wall of the two rings is very thin, which is prone to heat treatment deformation. During the heat treatment process, the temperature should be as low as possible under the premise of ensuring the quality of the heat treatment, and the holding time should be shorter. The processing technology is: first preheat the inner and outer rings of the bearing to 850-860°C, keep it warm for 10 hours, then heat it to 1090-1100°C and keep it warm for 6 hours, then co...

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Abstract

The invention discloses a mirror finished stainless steel bearing and a process technology thereof, which comprise molding of an inner ring and an outer ring of a bar stock, turning operation, heat treatment, plane centerless grinding, coarsely grinding the channels of the inner and the outer rings, heat treatment, finely grinding the channels of the inner and the outer rings, heat treatment, grinding the channels of the inner and the outer rings, assembly and pressing fit a dust cap. The mirror finished stainless steel bearing and the process technology thereof are characterized in that: 9Cr18 stainless steel is adopted as the bar stock; liquid casting passivation is carried out before fine grinding of the channels of the inner and the outer rings; uniform burnishing treatment with a waxing machine is carried out to the inner ring surface, the two end surfaces and the two chamfers of the inner ring and the outer ring surface, the two end surfaces and the two chamfers of the outer ring after grinding the channels of the inner and the outer rings; the dust cap and a retainer adopt material of stainless steel 304, coated with a vacuum ion coating and colored into golden. The mirror finished stainless steel bearing of the invention has strong corrosion resistance and long service life and can be widely used in special environment, such as food machinery, chemical dyeing, marine equipment, pharmaceutical industry, assembly line of IT industry, etc.

Description

technical field [0001] The invention relates to a bearing, in particular to a stainless steel bearing which not only has the performance of a common bearing but also has corrosion resistance and prolongs its service life. Background technique [0002] Bearing is a general-purpose part widely used in machinery manufacturing industry. It is characterized by high speed, large bearing capacity, small friction, high precision, and can bear radial and axial loads. The dust-proof covers on both sides play the role of dust-proof and preventing the overflow of lubricating grease. The processing technology of this kind of bearing has been known and mastered by the technicians in the industry for a long time. The traditional bearing is made of GCr15 bearing steel. The combination includes an outer ring and an inner ring and a certain number of rolling elements plus uniform pockets. The advanced cage evenly distributes the rolling elements on the raceway to achieve the purpose of unif...

Claims

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Application Information

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IPC IPC(8): F16C33/64F16C33/62F16C33/78
Inventor 俞少蔚王曦靓
Owner 余姚市曙光不锈钢轴承有限公司
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