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Method for improving performance of Sn matrix Babbitt alloy

A tin-based babbitt alloy and performance technology, applied in the field of bearing bush wear resistance, can solve the problems of bearing bush falling off, bearing scrap, babbitt alloy wear resistance, poor hardness and bonding strength, etc., to achieve the effect of improving performance

Active Publication Date: 2020-08-18
ZHEJIANG METALLURGICAL RES INST
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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 improving the performance of tin-based babbitt alloys, to solve the problems mentioned in the above background technology due to the poor wear resistance, hardness, and bonding strength of babbitt alloys in the working state. Under normal conditions, due to the large friction and shear stress generated during the rubbing process, the bearing bush will fall off, resulting in the problem of scrapping the bearing.

Method used

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  • Method for improving performance of Sn matrix Babbitt alloy
  • Method for improving performance of Sn matrix Babbitt alloy
  • Method for improving performance of Sn matrix Babbitt alloy

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Embodiment 1

[0026] Such as Figure 1-4 As shown, the present invention provides a kind of technical scheme: a kind of method for improving the performance of tin-based babbitt alloy, comprises the steps:

[0027] S1, take an appropriate amount of tin-based Babbitt alloy powder, metallic cobalt Co powder and tungsten carbide WC powder, wherein metallic cobalt Co powder accounts for 8-20% of the weight of tin-based Babbitt alloy powder; 4%-10% of alloy powder weight;

[0028] S2. Add tin-based Babbitt alloy powder, metal cobalt Co powder and tungsten carbide WC powder into the mixer for mixing, so that tin-based Babbitt alloy powder, metal cobalt Co powder and tungsten carbide WC powder are fully mixed 6-8 hours, get spray powder;

[0029] S3. Add the mixed spray powder into the plasma spray equipment, and use the plasma spray equipment to evenly spray the spray powder on the H62 brass surface with a size of 25*50*2-3mm;

[0030] Among them, the model of the plasma spraying equipment is ...

Embodiment 2

[0043] Such as figure 1 As shown, the present invention provides a kind of technical scheme: a kind of method for improving the performance of tin-based babbitt alloy, comprises the steps:

[0044] S1, get an appropriate amount of tin-based Babbitt alloy powder, metal cobalt Co powder and tungsten carbide WC powder, wherein metal cobalt Co powder accounts for 8% of the tin-based Babbitt alloy powder weight; tungsten carbide WC powder accounts for tin-based Babbitt alloy powder 4% by weight;

[0045] S2. Add tin-based Babbitt alloy powder, metal cobalt Co powder and tungsten carbide WC powder into the mixer for mixing, so that tin-based Babbitt alloy powder, metal cobalt Co powder and tungsten carbide WC powder are fully mixed 6-8 hours, get spray powder;

[0046] S3. Add the mixed spray powder into the plasma spray equipment, and use the plasma spray equipment to evenly spray the spray powder on the H62 brass surface with a size of 25*50*2-3mm;

[0047] Among them, the mode...

Embodiment 3

[0056] Such as figure 2 As shown, the present invention provides a kind of technical scheme: a kind of method for improving the performance of tin-based babbitt alloy, comprises the steps:

[0057] S1, get an appropriate amount of tin-based Babbitt alloy powder, metal cobalt Co powder and tungsten carbide WC powder, wherein metal cobalt Co powder accounts for 8% of the tin-based Babbitt alloy powder weight; tungsten carbide WC powder accounts for tin-based Babbitt alloy powder 8% by weight;

[0058] S2. Add tin-based Babbitt alloy powder, metal cobalt Co powder and tungsten carbide WC powder into the mixer for mixing, so that tin-based Babbitt alloy powder, metal cobalt Co powder and tungsten carbide WC powder are fully mixed 6-8 hours, get spray powder;

[0059] S3. Add the mixed spray powder into the plasma spray equipment, and use the plasma spray equipment to evenly spray the spray powder on the H62 brass surface with a size of 25*50*2-3mm;

[0060] Among them, the mod...

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Abstract

The invention discloses a method for improving the performance of an Sn matrix Babbitt alloy. The method comprises the steps of S1, weighting appropriate Sn matrix Babbitt alloy powder, cobalt powderand tungsten carbide powder, wherein the weight of the cobalt powder is 8-20% of the weight of the Sn matrix Babbitt alloy powder, and the weight of the tungsten carbide powder is 4-10% of the weightof the Sn matrix Babbitt alloy powder; and S2, adding the Sn matrix Babbitt alloy powder, the cobalt powder and the tungsten carbide powder into a mixer to be mixed evenly for 6-8 h to obtain spray powder. According to the method provided by the invention, cobalt and tungsten carbide are added to the Sn matrix Babbitt alloy on the surface of brass through plasma spraying, the addition volume of the tungsten carbide is 4% and 8%, and the addition volume of the cobalt is 8-20%. Abrasion tests show that the performance of the Sn matrix Babbitt alloy of a Sn matrix Babbitt alloy coating added withthe cobalt and the tungsten carbide is improved.

Description

technical field [0001] The invention relates to the technical field related to wear resistance of bearing bushes, in particular to a method for improving the performance of tin-based Babbitt alloy. Background technique [0002] The bearing pad is the contact part of the sliding bearing and the journal. The shape is a tile-like semi-cylindrical surface, which is very smooth. It is generally made of wear-resistant materials such as bronze and anti-friction alloy. In special cases, it can be made of wood, engineering plastics or rubber. There are two types of bearing bushes: integral and split, and the integral bearing is usually called a bushing. There are two types of integral bearings with or without oil grooves; the bearing and the journal adopt a clearance fit, and the bearing is the contact part of the sliding bearing and the shaft, which is very smooth and is generally made of wear-resistant materials such as bronze and anti-friction alloy. It is divided into main beari...

Claims

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Application Information

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IPC IPC(8): C22C13/00C22C32/00C23C4/06C23C4/134
CPCC22C13/00C22C32/0052C23C4/06C23C4/134
Inventor 潘君益刘晓刚刘平陈卓君祁习帆
Owner ZHEJIANG METALLURGICAL RES INST
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