Sliding bearing having improved lubrication characteristics

A technology of sliding bearings and sintered alloys, which is applied to bearings, bearing components, shafts and bearings, etc., can solve the problems of weak improvement effect of lubrication characteristics, small effect, reduction of lubricating oil impregnation rate, etc., and achieve excellent durability and lubrication characteristics Improved effect

Active Publication Date: 2013-07-24
DOOSAN INFRACORE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In the above-mentioned Korean Laid-Open Patent Publication No. 2004-0081474, it is characterized by densifying the part with a depth of 10 to 60 μm from the surface layer of the inner peripheral surface and sealing the surface pores, but the above-mentioned densification of the surface layer of the inner peripheral surface and surface pores The impregnation rate of lubricating oil is reduced due to the sealing of holes, and the optimization for uneven lines cannot be achieved, so that the improvement effect of lubricating characteristics is weak
[0014] In the case of the above technology, compared with the conventional technology that only performs grinding, there is a difference in the densification of the surface layer of the inner peripheral surface, but it is the same as in the past in terms of sealing the surface pores, and on the other hand, in the unevenness formed by the unevenness. There is a benefit in providing lubricating oil to the wear surface with the lubricating oil stored in the line, but the effect is small

Method used

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  • Sliding bearing having improved lubrication characteristics
  • Sliding bearing having improved lubrication characteristics
  • Sliding bearing having improved lubrication characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3 and comparative example 1-7

[0077] Manufacture of sliding bearings

[0078] According to the composition described in the following Table 1, prepare the composition powder for sliding bearings, use stearic acid series lubricants to mix these powders, and then use 3,000kg / cm 2 The pressure is pressurized to produce a molded body in the form of an annular sleeve.

[0079] Commercially available powders of the components listed in Table 1 were used. For example, the iron powder uses the powder of Hoeganaes Company, copper and copper-tin alloy (Cu30Sn; copper-tin alloy containing 30 wt% tin) is the powder of Korea Changxing Company, C is a commercially available graphite product, Ni and B are The B-Ni product of Hoeganaes Company, Mo, W, and Mn are tool steel powders.

[0080] As Comparative Examples 1 and 2, sliding bearings were produced with the same component contents as in Example 1. Comparative Examples 1 and 2 differ from Examples in the formation of unevenness.

[0081] Table 1

[0082] Example...

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Abstract

The present invention relates to a sliding bearing that can be appropriately applied to equipment loaded with high surface pressures since the bearing is manufactured such that the lubrication characteristics of the inner surface of a sintered-body-type sliding bearing are optimized.

Description

technical field [0001] The present invention relates to a sliding bearing manufactured in the form of a sintered body with improved lubricating properties, in particular, a sliding bearing formed of an iron-based sintered body suitable for high surface pressure and low speed action in engineering machinery. Background technique [0002] In general, industrial machines and construction machines have a plurality of moving parts and joint parts, and such moving parts and joint parts are equipped with bearings, and the above-mentioned shaft rotating parts or joint parts are usually equipped with shafts 20 and sliding shafts surrounded by shafts. Bearing 10 (reference figure 1 ). [0003] For such a shaft 20 and plain bearing 10 arrangement, lubricating oil is given to reduce wear caused by friction that occurs during motion. [0004] The above-mentioned sliding bearing maintains densification mainly by dispersing a large amount of soft copper (Cu) particles in the martensitic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/12F16C33/10F16C33/14
CPCF16C2204/52F16C33/128F16C2202/10F16C2240/42F16C33/145F16C2240/40Y10T428/12014Y10T428/12153Y10T428/12333Y10T428/12361Y10T428/12951Y10T428/12993F16C33/121
Inventor 李清来
Owner DOOSAN INFRACORE CO LTD
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