Precise roll forming method of bimetal tubular part

Abstract

The invention relates to a precise roll forming method of a bimetal tubular part. The precise roll forming method of the bimetal tubular part comprises a first step of obtaining an outer ring part blank and an inner ring part blank, a second step of assembling the outer ring part blank and the inner ring part blank, a third step of placing a core roller in the inner ring part blank, a fourth step of placing a drive roller outside the outer ring part blank, a sixth step of driving the drive roller to rotate through a drive device, wherein the core roller is driven to conduct linear feed movement along the radial direction, the outer ring part blank and the inner ring part blank are closely attached to each other all the time, continuous partial plastic deformation with small wall thickness, expanded inner and outer diameter and axial tension is generated, and a sixth step of stopping the core roller from feeding and enabling the core roller to return. By means of the continuous partial plastic deformation, the bimetal tubular part is formed integrally at a time. The geometric dimensioning of the bimetal tubular part is easy to control. Therefore, the precise roll forming method of the bimetal tubular part has the obvious advantages of saving energy and materials, reducing production cost, and improving the production efficiency. The bimetal tubular part is good in interface contact quality, high in connection intensity, and capable of meeting requirements of the service performance and the service life of the bimetal tubular part.

Description

technical field [0001] The invention relates to a precision roll forming method for a cylindrical piece, more specifically, to a precision roll forming method for a bimetallic cylindrical piece. Background technique [0002] A bimetallic barrel is a composite barrel made of two different metals. Compared with single-metal cylindrical parts, bimetallic cylindrical parts can give full play to the best properties of the two metals, not only have excellent physical, chemical, mechanical and other comprehensive properties, but also save a lot of precious metals and reduce production costs. Therefore, bimetal cylindrical parts are widely used in machinery, automobiles, trains, ships, metallurgy, chemical industry, energy, aerospace and other industrial fields. At present, there are mainly two manufacturing methods for bimetallic cylindrical parts. The first is spinning forming, that is, bimetallic tubular parts are directly formed by spinning with bimetallic tube blanks. Howeve...

AI Technical Summary

Problems solved by technology

This method has many procedures, low production efficiency, poor interface contact quality of bimetallic cylindrical parts, and low connection strength, which cannot meet the requirements of service performance and service life of high-performance bimetallic cylindrical parts.

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