Technology for spraying Babbitt metal to bearing bush

A babbitt alloy and bearing bush technology, which is applied in the field of the bearing bush spraying babbitt alloy process, can solve the problems of reducing the performance of the babbitt alloy itself, affecting the safe operation and life of the equipment, poor bonding strength between the babbitt alloy and the bearing bush, etc. The effect of extended runs, consistent strength, and improved bond strength

Inactive Publication Date: 2013-05-15
ZHEJIANG SHENBAILI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is proposed to solve the disadvantages of poor bonding strength between Babbitt alloy and bearing bush, reducing the performance of Babbitt alloy itself, and affecting the safe operation and life of equipment in the existing process of casting Babbitt alloy for bearing bushings. The process of spraying Babbitt alloy on bearing bushes with strong bonding strength, ensuring the safe operation of equipment and prolonging the service life of equipment

Method used

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  • Technology for spraying Babbitt metal to bearing bush

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The process of spraying Babbitt alloy on the bearing bush includes the following steps:

[0024] The bearing bush 3 is heated to 860 degrees Celsius and kept at a constant temperature for 8 hours, and the high temperature is used to remove stress and prevent the bearing bush 3 from deforming.

[0025] Stress Removal After the bearing bush 3 is cooled naturally, the bearing bush 3 is subjected to rough turning, and then the bearing bush 3 is heated to 800 degrees Celsius and kept at a constant temperature for 8 hours, and the hydrogen element is separated from the bearing bush 3 by using high temperature.

[0026] After the dehydrogenation treatment is completed, the bearing bush 3 is naturally cooled, and then the bearing bush 3 is subjected to finishing machining, so that the roughness of the joint surface between the inner hole of the bearing bush 3 and the babbitt alloy reaches 3.2 microns.

[0027] After the finish turning of the bearing bush 3 is completed, the sur...

Embodiment 2

[0031] The process of spraying Babbitt alloy on the bearing bush includes the following steps:

[0032] The bearing bush 3 is heated to 750 degrees centigrade and kept at a constant temperature for 12 hours, and the high temperature is used to remove stress and prevent the bearing bush 3 from deforming.

[0033] Stress removal After the bearing bush 3 is naturally cooled, the bearing bush 3 is subjected to rough turning, and then the bearing bush 3 is heated to 900 degrees Celsius and kept at a constant temperature for 6 hours, and the hydrogen element is separated from the bearing bush 3 by using high temperature.

[0034] After the dehydrogenation treatment is completed, the bearing bush 3 is naturally cooled, and then the bearing bush 3 is subjected to finishing machining, so that the roughness of the bonding surface between the inner hole of the bearing bush 3 and the babbitt alloy reaches 3.4 microns.

[0035] After the finish turning of the bearing bush 3 is completed, t...

Embodiment 3

[0039] The process of spraying Babbitt alloy on the bearing bush includes the following steps:

[0040] The bearing bush 3 is heated to 800 degrees Celsius and kept at a constant temperature for 10 hours, and the high temperature is used to remove stress and prevent the bearing bush 3 from deforming.

[0041] Stress removal After the bearing bush 3 is naturally cooled, the bearing bush 3 is subjected to rough turning, and then the bearing bush 3 is heated to 850 degrees Celsius and kept at a constant temperature for 7 hours, and the hydrogen element is separated from the bearing bush 3 by using high temperature.

[0042] After the dehydrogenation treatment is completed, the bearing bush 3 is naturally cooled, and then the bearing bush 3 is subjected to finishing machining, so that the roughness of the joint surface of the inner hole of the bearing bush 3 and the babbitt alloy reaches 3.0 microns.

[0043] After the finish turning of the bearing bush 3 is completed, the surface...

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Abstract

The invention relates to a technology for spraying Babbitt metal to a bearing bush. The technology comprises the following steps of removing stress, rough processing, dehydrogenation treatment, fine processing, tin coating treatment, spraying, fusing in a furnace, and the like. With the adoption of the technology for spraying the Babbitt metal to the bearing bush, the Babbitt metal is sprayed on the surface of the bearing bush by an electric arc spraying machine, so that the bonding strength of the Babbitt metal and the bearing bush is greatly improved and the minimal value reaches 57.1MPa. With the adoption of the spraying manner, the strength of each position of the Babbitt metal is the same, the density is also the same and the pore is avoided when the Babbitt metal is attached on the surface of the bearing bush. Thus, the segregation problem which can not be changed and is caused by the different density of the Babbitt metal element in the casting manner, and the disadvantages of un-shelling, cracking, air bubble and the like, are well overcome by using the spraying manner, the safe running of equipment is not affected and the service life of the bearing bush is greatly prolonged.

Description

technical field [0001] The invention relates to a spraying process, in particular to a process for spraying Babbitt alloy on bearing bushes. Background technique [0002] At present, Babbitt alloy is generally attached to the surface of the bearing bush by centrifugal casting. The centrifugal casting method not only reduces the bonding strength between the Babbitt alloy and the surface of the bearing bush, but also destroys the internal structure of the Babbitt alloy itself, resulting in a decrease in the performance of the Babbitt alloy itself, which is prone to segregation, shelling, cracking, and air bubbles. and other defects. Therefore, the bearing bushes cast on the surface of Babbitt alloy cannot meet the large vibration requirements when the equipment is frequently started and shut down, which affects the safe operation of the equipment. In addition, the life of the bearing bush cast on the surface of Babbitt alloy is generally short, the shortest life is about 45 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/02C23C4/12C23C4/18F16L33/06C23C4/131
Inventor 王保国戚佰利
Owner ZHEJIANG SHENBAILI TECH
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