Bismuth bronze-steel composite bimetallic bearing material and method for producing the same

A technology of composite bimetal and bearing materials, applied in metal layered products, chemical instruments and methods, layered products, etc., can solve problems such as lead pollution of copper-lead alloy bearing materials, achieve low friction coefficient, high strength and hardness , excellent wear reduction effect

Active Publication Date: 2009-07-08
SHANGHAI HEWEI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problem of lead pollution of the copper-lead alloy bearing material used in the engine, and at the same time retains the advantages of the copper-lead a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. The production material specification is: a bismuth bronze-steel composite bimetallic bearing material plate with a total thickness of 2.50×alloy width of 100mm and an alloy thickness of 0.5mm.

[0030] 2. Steel plate preparation: Select high-quality carbon steel plate of SPCC grade, cut the large steel plate into the designed 2.5×106×625mm, remove oil and rust, change the rolling to 2.0±0.01×106×780mm, and calibrate Flat, flatness ≤ 0.5mm.

[0031] 3. Alloy powder preparation, the chemical composition of powder is by weight percentage, bismuth (Bi) 1.0%, tin (Sn) 8.0%, zinc (Zn) 1.0%, impurity total amount 0.5%, surplus is copper.

[0032] 4. According to the design of the alloy layer thickness of 0.5mm for the finished product, the thickness of the powder coating is 0.85mm, and the alloy powder is evenly spread on the pretreated steel plate, and the crawler type is passed through the ammonia decomposition gas reducing protective atmosphere. Sintering is carried ou...

Embodiment 2

[0037] The production material specifications are: total thickness 3.5×alloy width 100mm, alloy thickness 0.80mm, bismuth bronze-steel composite bimetallic bearing material plate, select high-quality carbon steel structural steel plate of St37-2G grade, and cut the steel plate into width For 106mm and 600mm long strips, degrease and derust the surface, change the thickness of rolling to 2.70mm, and level them. The chemical composition of the powder is calculated by weight percentage, bismuth (Bi) 6.0%, tin (Sn) 8.0%, zinc (Zn) 2.0%, total amount of impurities 0.5%, and the balance is copper alloy powder spread evenly on the processed On the steel plate, and be placed on and have reducing protective atmosphere sintering furnace to carry out sintering, all the other production processes are with embodiment 1.

Embodiment 3

[0039] The production material specifications are: total thickness 6.0×alloy width 150mm, alloy thickness 1.50mm, bismuth bronze-steel composite bimetallic bearing material plate, choose SS400 grade carbon steel structural steel plate, cut the steel plate into width 156mm and length For 650mm strips, the surface is degreased and derusted, then rolled to a thickness of 4.50mm, and leveled. The chemical composition of the powder is calculated by weight percentage, bismuth (Bi) 12.0%, tin (Sn) 8.0%, zinc (Zn) 2.5%, total amount of impurities 0.5%, and the balance is copper alloy powder spread evenly on the processed On the steel plate, and put into sintering furnace and carry out sintering in reducing protection atmosphere, all the other production processes are with embodiment 1.

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Abstract

The invention provides a bismuth bronze-steel composite bimetal bearing material and a manufacturing method thereof, and in particular relates to a bismuth bronze-steel composite bimetal bearing material formed by sintering a bismuth bronze alloy on the surface of a carbon steel material and a manufacturing method thereof. The bismuth bronze-steel composite bimetal bearing material has a laminated structure, the base layer is the carbon steel material, the surface is the bismuth bronze alloy, and the bismuth bronze alloy is sintered on the surface of the bismuth bronze alloy material. The method for manufacturing the bismuth bronze-steel composite bimetal bearing material adopts the powder metallurgy sintering method principle to sinter the bismuth bronze alloy on the surface of the bismuth bronze alloy so as to form the bismuth bronze-steel composite bimetal bearing material.

Description

technical field [0001] The invention relates to a bismuth bronze-steel composite bimetallic bearing material and a manufacturing method thereof, in particular to a bismuth bronze-steel composite bimetallic bearing material in which a bismuth bronze alloy is sintered on the surface of a carbon steel material and a manufacturing method thereof. Background technique [0002] Copper-based bimetallic bearing materials in the prior art are widely used in the manufacture of bearings and shaft sleeves for engines, generators, engineering machinery and household appliances. It is widely used in high-power engines. [0003] Traditional copper-based bimetallic bearing materials are mainly lead bronze-steel bimetallic materials, which have high load-carrying capacity and fatigue resistance, and also have good wear reduction and mosaic properties. It has always been considered as an ideal bearing material and has been widely used. [0004] However, since the lead bronze alloy has about...

Claims

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Application Information

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IPC IPC(8): B32B15/01C22C9/00C22C9/02B21C37/00B22F7/04
Inventor 何光志周剑平陈进添黄玉霖
Owner SHANGHAI HEWEI IND
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