Method for manufacturing copper base alloy bearing bush wear-resisting layer

A copper-based alloy and wear-resistant layer technology, applied in the field of surfacing, can solve the problems of low bonding strength, short service life and poor coating performance of the bearing bush coating, and achieve the optimization of the coating structure, the improvement of the bonding strength, and the extended use. effect of life

Active Publication Date: 2014-05-28
严格集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a copper-based alloy bearing wear-resistant layer in order to solve the problems of low bonding strength, poor coating performance and short service life of the existing bearing coating

Method used

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  • Method for manufacturing copper base alloy bearing bush wear-resisting layer
  • Method for manufacturing copper base alloy bearing bush wear-resisting layer

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0018] Specific Embodiment 1: The preparation method of the copper-based alloy bearing wear-resistant layer in this embodiment is carried out according to the following steps:

[0019] 1. Grind the copper alloy bearing bush with fine sandpaper until it appears metallic luster;

[0020] 2. Then use acetone to ultrasonically clean for 5-10 minutes;

[0021] 3. The surface of the bearing bush after cleaning in step 2 is tinned, and the tin water is hung on the surface of the bearing bush;

[0022] 4. Under the condition of argon gas protection, use CMT welding machine to surfacing babbitt alloy on the surface of the bearing bush, control the diameter of babbitt alloy welding wire to 1.0~2.0mm, welding current to 40~70A, welding voltage to 10~15V, wire feeding speed 2.0~5.0m / min, welding speed 10~15mm / s, argon gas flow 10~20L / min, babbitt weld layer thickness 2~20mm;

[0023] 5. Adjust the size and flatness of the bearing pad by turning or scraping to complete the preparation of...

specific Embodiment approach 2

[0027] Embodiment 2: The difference between this embodiment and Embodiment 1 is: ultrasonic cleaning with acetone for 5 minutes as described in step 2. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the surfacing welding process described in step 4 is digitally controlled or manually operated using 3D printing control equipment. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for manufacturing a copper base alloy bearing bush wear-resisting layer and relates to a bead weld method. The method for manufacturing the copper base alloy bearing bush wear-resisting layer aims at solving the problems that an existing bearing bush coating is low in combining strength, poor in coating performance and short in service life. The method includes the first step of polishing, the second step of cleaning, the third step of tin coating, the fourth step of bead weld of babbit metal on the surface of a bearing bush by a CMT welding machine and the fifth step of turning or scraping. The method is used for improving the combining strength of the wear-resisting coating and a copper base bearing bush base body, optimizing a coating organization, prolonging service life, improving the machining precision of the bearing bush and manufacturing the copper base alloy bearing bush wear-resisting layer.

Description

technical field [0001] The invention relates to a surfacing welding method, in particular to a method for surfacing babbitt alloy for a bearing bush. Background technique [0002] The bearing bush is an important part of the sliding bearing, it can support the shaft and the parts on the shaft, ensure the rotation accuracy of the shaft, and reduce the friction between the shaft and the supporting parts. Modern large-scale high-speed motors mostly use copper-based alloy bearing bushes. Copper-based alloys have higher thermal conductivity than steel and can quickly dissipate heat caused by sliding friction. In addition, the hardness of the copper-based alloy is lower than that of steel. Even if the bearing bush is seriously damaged, the copper-based alloy matrix will not damage the bearing and play a certain protective role. [0003] The sliding surface of the bearing bush is mostly made of Babbitt alloy with good compliance, anti-occlusion, corrosion resistance and embedding....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/04B23K9/235
CPCB23K9/044B23K9/16B23K9/235B23P15/00
Inventor 何鹏杨卫岐邱希亮
Owner 严格集团股份有限公司
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