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Wear-resistant and corrosion-resistant bearing

A corrosion-resistant, bearing technology, used in bearings, bearing components, shafts and bearings, etc., can solve the problems that bearings cannot adapt to temperature, load, lubrication conditions, low contact fatigue strength, poor life reliability, etc., to achieve wear resistance and Excellent toughness, good contact fatigue performance and long service life

Active Publication Date: 2016-06-15
河南联轴实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The grain size of the material obtained by this conventional heat treatment process can only reach grade 8, the contact fatigue strength is low, the wear resistance is poor, and the life reliability is poor
[0004] This conventional heat treatment process is increasingly unable to meet the development needs of high-reliability and high-comfort mechanical parts. For example, under the special and harsh operating conditions of engine rocker bearings, the bearings cannot adapt to their special temperature, load, Lubrication conditions

Method used

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  • Wear-resistant and corrosion-resistant bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] like figure 1 as shown, figure 1 It is a cross-sectional view of a wear-resistant and corrosion-resistant bearing proposed by the present invention.

[0034] refer to figure 1 , a wear-resistant and corrosion-resistant bearing proposed by the present invention includes a bearing outer ring 1, a rolling ball 2, and a bearing inner ring 3, and the raceways of the bearing outer ring 1 and the bearing inner ring 3 are double-raceway structures; In the radial section, the distance between the centers of the two raceways is 84mm; the radius of curvature of any raceway is 30.8mm, the radius of the ball 2 is 29.6mm, and the bearing contact angle is 50°.

[0035] The components of the bearing inner ring 3 include by weight percentage: C: 0.55%, Si: 0.40%, N: 0.15%, B: 0.20%, V: 0.3349%, W: 0.10%, Mo: 0.23%, Nb: 0.08 %, Al: 0.35%, Cr: 3.04%, Y: 0.12%, S≤0.015%, P≤0.02%, and the balance is Fe.

[0036] The preparation process of the bearing inner ring 3 includes: melting, pour...

Embodiment 2

[0042] A wear-resistant and corrosion-resistant bearing proposed by the present invention includes a bearing outer ring 1, a rolling ball 2, and a bearing inner ring 3, and the raceways of the bearing outer ring 1 and the bearing inner ring 3 are double-raceway structures; In the radial section, the distance between the centers of the two raceways is 84mm; the radius of curvature of any raceway is 30.8mm, the radius of the ball 2 is 29.6mm, and the bearing contact angle is 50°.

[0043] The components of the bearing inner ring 3 include by weight percentage: C: 0.65%, Si: 0.20%, N: 0.25%, B: 0.10%, V: 0.3709%, W: 0.20%, Mo: 0.20%, Nb: 0.12 %, Al: 0.25%, Cr: 3.36%, Y: 0.15%, S≤0.015%, P≤0.02%, and the balance is Fe.

[0044] The preparation process of the bearing inner ring 3 includes: melting, pouring and heat treatment.

[0045] Heat treatment includes:

[0046] Austenitizing treatment: raise the temperature of the poured inner ring body to 600°C, hold it for 3 hours, then ...

Embodiment 3

[0050] A wear-resistant and corrosion-resistant bearing proposed by the present invention includes a bearing outer ring 1, a rolling ball 2, and a bearing inner ring 3, and the raceways of the bearing outer ring 1 and the bearing inner ring 3 are double-raceway structures; In the radial section, the distance between the centers of the two raceways is 84mm; the radius of curvature of any raceway is 30.8mm, the radius of the ball 2 is 29.6mm, and the bearing contact angle is 50°.

[0051] The components of the bearing inner ring 3 include by weight percentage: C: 0.58%, Si: 0.35%, N: 0.18%, B: 0.18%, V: 0.3436%, W: 0.13%, Mo: 0.22%, Nb: 0.09 %, Al: 0.32%, Cr: 3.1276%, Y: 0.13%, S≤0.015%, P≤0.02%, and the balance is Fe.

[0052] The preparation process of the bearing inner ring 3 includes: melting, pouring and heat treatment.

[0053] Heat treatment includes:

[0054] Austenitizing treatment: raise the temperature of the poured inner ring body to 620°C, keep it warm for 2.2 hou...

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Abstract

The invention discloses a wear-resistant and corrosion-resistant bearing which comprises a bearing outer ring, a rolling ball and a bearing inner ring, wherein the rollaway nest of the bearing outer ring and the rollaway nest of the bearing inner ring are in a double rollaway-nest structure; in a radial section, the distance between the centers of circles of the two rollaway nests is 84 mm; the radius of curvature of any one rollaway nest is 30.8 mm, the radius of the rolling ball is 29.6 mm, and the bearing contact angle is 50 degrees. The bearing inner ring comprises the following components in percentages by weight: 0.55-0.65% of C, 0.20-0.40% of Si, 0.15-0.25% of N, 0.10-0.20% of B, 0.30-0.45% of V, 0.10-0.20% of W, 0.20-0.23% of Mo, 0.08-0.12% of Nb, 0.25-0.35% ofAl, 3.00-3.50% of Cr, 0.12-0.15% of Y, less than or equal to 0.015% of S, less than or equal to 0.02% of P and the balance Fe.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a wear-resistant and corrosion-resistant bearing. Background technique [0002] Bearing is a supporting part in mechanical transmission mechanism, which is used to determine the relative movement position of the rotating shaft and other parts, reduce the friction coefficient during its movement, and ensure its rotation accuracy. Its quality and carrying capacity directly affect the work of the whole machine performance. [0003] High carbon chromium bearing steel is a large type of bearing steel and is the most commonly used steel for manufacturing bearings and bearing parts. The existing high-carbon chromium bearing steel heat treatment process is: quenching and heating at 830-850°C, keeping it for an appropriate time, quenching in oil at 30-80°C, and then tempering in a tempering furnace at 150-180°C for a certain period of time. The grain size of the material obtained by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/62F16C33/64
CPCF16C33/62F16C33/64F16C2204/64F16C2204/70F16C2220/06F16C2223/10
Inventor 李海波姚燕超陈书龙喻鹏
Owner 河南联轴实业有限公司
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