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Production of multi-layer metal bush tile spreading materials

A multi-layer metal, production process technology, applied in the direction of bearing components, shafts and bearings, mechanical equipment, etc., can solve problems such as labor-intensive, low degree of metallurgical integration, environmental pollution, etc., to eliminate environmental pollution problems and save non-ferrous metal materials , Remarkable economic and technical benefits

Inactive Publication Date: 2008-07-16
胡长安
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, it costs materials, labor, and molds, increases the processing cycle, and increases the manufacturing cost of the product.
[0004] Second, the bonding firmness between steel and copper-lead alloy layers is poor
The disadvantages of these two treatment methods are: the degree of metallurgical bonding between copper alloy and steel is very small, the diffusion of non-ferrous metals to the steel layer is small, and the diffusion depth is small and uneven, resulting in a gap between the non-ferrous metal working layer of the bearing and the steel back joint surface. poor bond strength
[0005] 3. Poor production environment
In the treatment of the steel back, whether it is degreasing washing, sanding, degreasing washing, or copper plating, organic solvents and chemical agents are used for steel treatment, which brings pollution to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] specific implementation

[0016] First, a layer of copper (Cu) is welded on one surface of the unfolded flat steel material (the steel material can be made according to the required length and shape of the bearing bush) used as a semi-circular bearing tile, and the welding method can be laser light. Welded to make a steel lining with a welded copper layer. Put the steel lining with the soldered copper layer in the mold cavity, evenly distribute the pure copper powder on the surface of the soldered copper layer of the steel back, and then evenly apply a layer of copper alloy powder (the copper alloy composition is 19% lead, 6% tin, 75% copper) and put it into a protective atmosphere sintering furnace together with the mold, and sintered at a temperature of 870 ° C for 25 minutes. The composition of the protective atmosphere was 30% nitrogen and 70% hydrogen. After sintering, when it is cooled to 700 ℃, it is placed on an axial swing rolling machine, and the two loose s...

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PUM

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Abstract

A technology for preparing the developed material of multi-layer metallic bush includes such steps as providing a developed steel plate of semi-circular bush, welding a copper layer to its one surface, spreading a layer of Cu-alloy powder, putting it along with its mould in a sinter furnace containing protecting atmosphere, sintering, cooling to 500-800 deg.C, putting it on an axial swinging-rolling machine, thermally swinging rolling on the sintered layer for compacting it, and heat treating.

Description

technical field [0001] The invention relates to a production process of a multi-layer metal bearing tile unfolding material. It belongs to the technical field of production of manufacturing multi-layer metal bearing tile unfolding materials. Background technique [0002] With the rapid development of the industry in recent years, there is an increasing demand for high-speed and high-horsepower diesel engines. With the continuous development of high-speed and supercharged engines, the working environment of bearings has deteriorated, and the material and manufacturing requirements of crankshaft and connecting rod bearings have also increased. Come higher. The demand for copper-lead bearing bushes and lead-bronze bearing bushes with large bearing capacity and good fatigue resistance used in internal combustion engines is also increasing. Most of these steel-copper alloy bearing materials are copper-lead alloy and lead-bronze alloy materials, and the manufacture of the above ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/04F16C33/00
Inventor 胡长安
Owner 胡长安
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