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A rolling bearing with high toughness and high hardness

A rolling bearing, high hardness technology, applied in the field of bearings, can solve the problems of difficulty in meeting the development needs of mechanical parts, low contact fatigue strength, poor life reliability, etc., to achieve inhibition of precipitation nucleation or growth, good contact fatigue performance, and reduce contact The effect of fatigue life

Active Publication Date: 2018-07-06
安徽省宁国顺昌机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing bearing materials have low grain size, low contact fatigue strength, poor wear resistance, and poor life reliability. It is increasingly difficult to meet the development needs of high reliability and high comfort mechanical parts.

Method used

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  • A rolling bearing with high toughness and high hardness
  • A rolling bearing with high toughness and high hardness

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] likefigure 1 and figure 2 as shown, figure 1 It is a sectional view of a rolling bearing with high toughness and high hardness proposed by the present invention, figure 2 It is a structural schematic diagram of the inner ring of a rolling bearing with high toughness and high hardness proposed by the present invention.

[0031] refer to figure 1 and figure 2 , a high-toughness and high-hardness rolling bearing proposed by the present invention includes a bearing outer ring 1, rolling elements 2, and a bearing inner ring 3. Protruding part 31, three protruding parts 31 are connected in sequence, and a concave part 32 is formed at the junction of two adjacent protruding parts 31; the protruding part 31 and the concave part 32 are arc lines; the three protruding parts 31 are along the The circumferential direction of the ring 3 is evenly distributed on the outer raceway surface.

[0032] The components of the bearing inner ring 3 include by weight percentage: C: 0.6...

Embodiment 2

[0037] A high-toughness and high-hardness rolling bearing proposed by the present invention includes a bearing outer ring 1, rolling elements 2, and a bearing inner ring 3. The outer raceway surface of the bearing inner ring 3 includes three protrusions protruding toward the outer side of the bearing inner ring 3 31, the three raised parts 31 are connected in turn, and a concave part 32 is formed at the junction of two adjacent raised parts 31; the raised part 31 and the concave part 32 are both arcs; the three raised parts 31 are along the inner ring of the bearing 3 are evenly distributed on the outer raceway surface in the circumferential direction.

[0038] The components of the bearing inner ring 3 include by weight percentage: C: 0.7%, Si: 0.34%, N: 0.4%, B: 0.12%, Mn: 0.3%, V: 0.2%, W: 0.1%, Mo: 0.22 %, Nb: 0.12%, Al: 0.26%, Cr: 3.41%, Ce: 0.07%, S≤0.015%, P≤0.02%, and the balance is Fe.

[0039] The preparation process of the bearing inner ring 3 includes: smelting, c...

Embodiment 3

[0043] A high-toughness and high-hardness rolling bearing proposed by the present invention includes a bearing outer ring 1, rolling elements 2, and a bearing inner ring 3. The outer raceway surface of the bearing inner ring 3 includes three protrusions protruding toward the outer side of the bearing inner ring 3 31, the three raised parts 31 are connected in turn, and a concave part 32 is formed at the junction of two adjacent raised parts 31; the raised part 31 and the concave part 32 are both arcs; the three raised parts 31 are along the inner ring of the bearing 3 are evenly distributed on the outer raceway surface in the circumferential direction.

[0044] The components of the bearing inner ring 3 include by weight percentage: C: 0.62%, Si: 0.16%, N: 0.47%, B: 0.1%, Mn: 0.36%, V: 0.12%, W: 0.13%, Mo: 0.19 %, Nb: 0.14%, Al: 0.23%, Cr: 3.3881%, Ce: 0.09%, S≤0.015%, P≤0.02%, and the balance is Fe.

[0045] The preparation process of the bearing inner ring 3 includes: smelt...

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Abstract

The invention discloses a high-toughness and high-rigidity rolling bearing, comprising a bearing outer ring, a rolling body and a bearing inner ring; an outer raceway surface of the bearing inner ring comprises three bumps protruding towards the outer side of the bearing inner ring, the three bumps are sequentially connected, and a concave part is formed in a connecting part of every two adjacent bumps; both of the bumps and the concave parts are arcs; the three bumps are evenly distributed on the outer raceway surface along the circumferential direction of the bearing inner ring. The bearing inner ring is made from the following components by weight percent: 0.6-0.7% of C, 0.15-0.35% of Si, 0.4-0.5% of N, 0.09-0.12% of B, 0.3-0.4% of Mn, 0.1-0.2% of V, 0.1-0.15% of W, 0.18-0.22% of Mo, 0.12-0.15% of Nb, 0.22-0.26% of Al, 3-4% of Cr, 0.07-0.10% of Ce and the balance of Fe.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a rolling bearing with high toughness and high hardness. 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] The existing bearing materials have low grain size, low contact fatigue strength, poor wear resistance, and poor life reliability. It is increasingly difficult to meet the development needs of high reliability and high comfort mechanical parts. Contents of the invention [0004] Based on the technical problems in the background technology, the present invention proposes a rolling bearing with high toughness and high hardness, which has high har...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/62F16C33/58C22C38/18C22C38/02C22C38/32C22C38/04C22C38/12C22C38/06C21D9/40C21D1/18C21D1/20
CPCC21D1/18C21D1/20C21D9/40C22C38/001C22C38/005C22C38/02C22C38/04C22C38/06C22C38/12C22C38/18C22C38/32F16C33/585F16C33/62
Inventor 李海波姚燕超陈书龙喻鹏
Owner 安徽省宁国顺昌机械有限公司
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