Hybrid electromagnetic induction and laser heating stamping method and device

Abstract

The invention provides a hybrid electromagnetic induction and laser heating stamping method and device. The technological process comprises the steps that an electromagnetic induction method is adopted for heating sheet metal to reach the temperature at which materials are not subjected to microstructural change; a laser is adopted for rapidly irradiating and heating an area needing to be subjected to large deformation, and then the flowing capacity of the area is improved; a conventional stamping mode is adopted for forming parts, complex geometrical characteristics are formed, the smooth finish of the shearing surface is improved, the stamping force is lowered, and the service life of a mold is prolonged. The temperature of the sheet metal is raised in advance by means of the electromagnetic induction method, the needed laser heating range can be decreased, and then the laser power requirement is lowered, so that the capital input of laser equipment is reduced.

Description

technical field [0001] The invention relates to a stamping method and a device thereof which combine electromagnetic induction and laser heating. Background technique [0002] Based on the obvious growth of modern people's demand for lightweight components, lightweight design has attracted the attention of various industrial fields, such as automobiles, consumer electronics, medical equipment, household appliances and other industries. For the production process, the metal forming process can manufacture parts with good mechanical properties and surface finish, and the manufacturing process can achieve low material consumption and high productivity, and these advantages are other manufacturing processes such as die-casting, traditional metal cutting and powder injection molding. Waiting can't be achieved. [0003] The application of light alloy materials is one of the methods to realize the lightweight of products. Compared with general steel, the use of aluminum can reduc...

AI Technical Summary

Problems solved by technology

However, when using this kind of material to produce parts, due to its high mechanical strength, the forming load will be significantly increased, so a large punching machine is required for production

Moreover, the increase in the forming load will further accelerate the wear of the die, shorten the fatigue life of the die, and eventually lead to an increase in production costs

At the same time, at room temperature, such materials usually have poor formability, and large deformation areas are prone to fracture, which limits the geometry of formed parts.

[0004] Although today it is possible to combine multi-step processes such as first forming, then annealing, and then forming to manufacture parts with complex shapes, the long forming cycle is not conducive to production

Although the traditional high temperature forming process can improve the formability of the material and reduce the forming load, this method will lead to poor surface quality of the formed part, inaccurate geometry, and long production cycle

In addition, when the size of the formed part is reduced, because the ratio of the volume of the workpiece to its area becomes smaller, the forming temperature of the workpiece is not easy to control, and the temperature will drop rapidly during the transportation of the workpiece, so it is difficult to achieve the desired effect

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