Production of multi-layer metal bush tile spreading materials

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 ...

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.