Laser cutting process for hot-rolled steel plate

Abstract

The invention relates to the technical field of laser cutting, and especially relates to a laser cutting process for a hot-rolled steel plate. The laser cutting process for the hot-rolled steel plate comprises the following steps: conveying the hot-rolled steel plate to be cut to a machining position through conveying equipment, then clamping the hot-rolled steel plate by using a clamp, and spraying cutting oil according to the thickness of the hot-rolled steel plate to be machined to prepare for cutting; and enabling cutting parameters to correspond to the plate thickness, and marking coordinates before cutting the hot-rolled steel plate through a laser machining head. The laser cutting process for the hot-rolled steel plate has the advantages that high cutting quality is achieved, a cutting torch does not make contact with a workpiece during laser cutting, tool abrasion does not exist, only output parameters of a laser device need to be changed when parts of different shapes are machined, and the laser cutting process is low in noise, small in vibration and free of pollution, and the problems that at present, after a hot-rolled steel plate is cut, the cutting surface is very rough, the steel plate is easy to deform, and the cutting quality is seriously influenced, so that the machining precision for the hot-rolled steel plate is relatively poor, are solved.

Description

technical field [0001] The invention relates to the technical field of laser cutting, in particular to a laser cutting process for hot-rolled steel plates. Background technique [0002] The laser cutting process uses the energy released when the laser beam is irradiated on the surface of the steel plate to melt and evaporate the steel. The laser source generally uses a carbon dioxide laser beam, and the working power is 500-2500 watts. Through the lens and reflector, the laser beam is concentrated in a small area, and the energy is highly concentrated to heat the part to be cut quickly and locally, so that the steel evaporates. In addition, because the energy is very concentrated, only a small amount of heat is transferred to other parts of the steel plate, so the laser processed steel plate has the advantage of little or no deformation. However, when laser cutting hot-rolled steel sheets, due to the high temperature of the hot-rolled steel sheets themselves, the internal ...

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Problems solved by technology

[0004] The object of the present invention is to provide a laser cutting process for hot-rolled steel plates, which has good cutting quality, no contact between the cutting torch and the workpiece during laser cutting, no tool wear, and only needs to change the output of the laser when processing parts of different shapes parameters, and the laser cuttin

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