Magnesium alloy/carbon steel pipe composite connection method based on induction heating and electromagnetic forming

Abstract

The invention relates to a magnesium alloy / carbon steel pipe composite connection method based on induction heating and electromagnetic forming. A warm electromagnetic forming method is utilized to increase the magnesium alloy forming performance, additionally, electromagnetic induction heating and electromagnetic forming are combined, the induction heating and forming functions are realized by utilizing a same coil, so as to increase the connecting efficiency of a heterogeneous metal tube and facilitate the automation control, and additionally, a warm forming process and an electromagnetic forming process are combined during forming, so that the connecting forming performance is increased. According to the magnesium alloy / carbon steel pipe composite connection method, a magnesium alloy pipe is overlapped with a carbon steel pipe, and after the magnesium alloy inner pipe reaches the set temperature through the electromagnetic induction heating of the coil, the magnesium alloy inner pipe is discharged by the electromagnetic forming coil, so that severe plastic deformation of the magnesium alloy inner pipe occurs, and the magnesium alloy inner pipe after plastic deformation collides and connects with an outer pipe. According to the method, the electromagnetic forming coil is instantaneously discharged through an energy storage capacitor, so as to generate a strong pulsed magnetic field, so that the warm inner pipe is formed at high speed under the action of electromagnetic force and collides with the carbon steel outer pipe with higher rigidity at high speed to generate combination.

Description

technical field [0001] The invention relates to an electromagnetic connection technology for dissimilar metal alloy pipe fittings, specifically an induction heating and electromagnetic forming composite connection method for lap joints of magnesium alloy / carbon steel pipe fittings, which is mainly used in the connection technology of magnesium alloy pipe fittings and carbon steel pipe fittings. Background technique [0002] In recent years, the problems of environmental pollution and resource consumption have become increasingly serious. With the rapid development of the automobile industry, automobile exhaust emissions and fuel utilization have increasingly attracted social attention, and automobile lightweight has become the development trend of the automobile industry. Lightweight, The application of high-strength difficult-to-form materials in advanced manufacturing fields such as automobiles, aviation, and aerospace is increasing. [0003] Magnesium and its alloys are ...

AI Technical Summary

Problems solved by technology

At present, the main processing method of magnesium alloy is die casting, but the magnesium alloy products after plastic processing have a broader application prospect. Although the casting performance of magnesium alloy is excellent, it can be cast into various parts with complex shapes, but there are also product specifications and sizes. Limited, poor mechanical properties and other limitations, various casting defects such as porosity, porosity, shrinkage cavity and inclusions are difficult to avoid, too thin wall thickness will easily lead to product scrapping, and the yield is low, and shaping processing can not only increase production, but also Can give the product more excellent mechanical properties

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