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Davis bronze-steel composite bimetallic bearing material and manufacturing method thereof

A composite bimetal and bearing material technology, applied in other manufacturing equipment/tools, manufacturing tools, bearing components, etc., can solve the problem of low resistance to stress corrosion and chemical corrosion, low strength of copper-lead alloy bearing materials, mechanical Poor bearing capacity and other problems, to achieve the effect of low friction coefficient, high strength, good corrosion cracking resistance and stress corrosion cracking resistance

Active Publication Date: 2008-11-12
SHANGHAI HEWEI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problems of low strength and poor mechanical bearing capacity of copper-lead alloy bearing materials used in high-power and high-load engines, and makes up for the low stress corrosion resistance and chemical corrosion resistance of the existing copper-lead alloy bearing materials. and the heavy metal lead have The lack of environmental pollution fills the gap in the production of environmentally friendly copper alloy bimetallic bearing materials with high comprehensive mechanical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. The specifications of the production materials are: nickel bronze-steel composite bimetallic bearing material plates with a total thickness of 2.5×alloy width of 120mm and an alloy thickness of 0.5mm.

[0025] 2. Steel plate preparation: Select high-quality carbon steel plate of SPCC grade, cut the large steel plate into the designed 2.5×126×625mm, remove oil and rust, change the rolling to 2.0±0.01×126×780mm, and calibrate Flat, flatness ≤ 0.5mm.

[0026] 3. Alloy powder preparation, adopt the method for high-pressure water atomization to produce nickel-bronze alloy powder, the chemical composition of powder is by weight percentage, nickel (Ni) 1.0%, tin (Sn) 8.0%, lead (Pb) 0.01%, Zinc (Zn) 0.2%, phosphorus (P) 0.1%, total impurities 0.5%, the balance is copper

[0027] 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 ste...

Embodiment 2

[0032] The production material specifications are: total thickness 3.5×alloy width 100mm, alloy thickness 0.80mm, nickel 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. Alloy powder preparation, adopt the method for high-pressure water atomization to prepare nickel-bronze alloy powder, the chemical composition of powder is by weight percentage, nickel (Ni) 9.0%, tin (Sn) 6.0%, lead (Pb) 0.01%, zinc ( Zn) 0.2%, the total amount of impurities 0.5%, and the alloy powder whose balance is copper is evenly spread on the processed steel plate, and placed in a sintering furnace with a reducing protective atmosphere for sintering, and the rest of the production process is implemented in the same manner example 1.

Embodiment 3

[0034]The production material specifications are: total thickness 5.0×alloy width 140mm, alloy thickness 1.5mm, nickel bronze-steel composite bimetallic bearing material plate, select high-quality carbon steel structural steel plate of SS400 grade, and cut the steel plate into a width of 146mm and Strips with a length of 650mm are degreased and derusted on the surface, rolled to a thickness of 3.50mm, and leveled. Alloy powder preparation, adopt the method for high-pressure water atomization to prepare nickel-bronze alloy powder, the chemical composition of powder is by weight percentage, nickel (Ni) 15.0%, tin (Sn) 8.0%, lead (Pb) 0.01%, zinc ( Zn) 0.5%, impurity total amount 0.5%, the alloy powder that surplus is copper is evenly spread on the steel plate that has been processed, and put into sintering furnace and carry out sintering in reducing protection atmosphere, all the other production processes are the same as embodiment 1.

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Abstract

The invention provides a nickel bronze-steel compound double metal bearing material and a manufacture method thereof, in particular to a nickel bronze-steel compound double metal bearing material and a manufacture method thereof of a nickel bronze alloy sintered on the surface of a low carbon high grade plain carbon steel material. The nickel bronze-steel compound double metal bearing material of the invention is a layered structure; a basic layer is the low carbon high grade plain carbon steel material; a surface layer is the nickel bronze alloy; the nickel bronze alloy is sintered on the surface of the low carbon high grade plain carbon steel material. The manufacture method of the nickel bronze-steel compound double metal bearing material of the invention relates to a manufacture method for sintering the nickel bronze alloy on the surface of the low carbon high grade plain carbon steel material to form the nickel bronze-steel compound double metal bearing material by adopting the principle of a powder metallurgy sintering method.

Description

technical field [0001] The present invention relates to a nickel bronze-steel composite bimetallic bearing material and a manufacturing method thereof, in particular to a nickel bronze-steel composite bimetallic bearing material in which a nickel bronze alloy is sintered on the surface of a low-carbon high-quality carbon steel material and its manufacture method. Background technique [0002] With the advancement of automobile technology, higher requirements are put forward for automobile bearing materials, especially for copper alloy bearing materials used in high-power and high-load engines. For example, bearing materials are required to contain no harmful components and meet environmental protection requirements. ; It must have high strength to meet the requirements of high-power and extra-high-power engines. It is also required that the bearing material can adapt to different environments and working conditions, and has the ability to resist stress corrosion and chemical...

Claims

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Application Information

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IPC IPC(8): B32B15/01F16C33/00C22C9/00C22C1/04B23P23/00
Inventor 何光志周剑平陈进添温世达
Owner SHANGHAI HEWEI IND
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