Method for laser cutting of 1.5 mm stainless steel

Abstract

The invention relates to a method for laser cutting of 1.5 mm stainless steel. The method comprises the following steps of removing oil stains and dust on the surface of the stainless steel to keep the surface of the stainless steel smooth; and cutting a 1.5 mm stainless steel plate by adopting a ProCutter laser cutting gun, wherein the process parameters are that the cutting speed is 3-8 m / min, the laser power is 3-4 kW, the gas pressure is 1.2-1.8 MPa, the defocusing amount is -2-0 mm, the working distance is 0.6-1.0 mm, the diameter of a cutting nozzle is 1.8-2.2 mm, and the cutting gas is nitrogen. When the method is used for cutting the stainless steel, a cutting process window with no adhering slag on the back surface of a kerf and good kerf quality and the optimal cutting process parameters are obtained by changing all the process parameters, the process stability is ensured, and repeatability is achieved.

Description

technical field [0001] The invention relates to a method for laser cutting 1.5mm stainless steel, in particular to a cutting method of laser cutting + 1.5mm stainless steel plate + nitrogen gas. Background technique [0002] 304 stainless steel is the most widely used chromium-nickel stainless steel. As a widely used steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; it has good hot workability such as stamping and bending, and has no heat treatment. Hardening phenomenon (use temperature -196 ° C ~ 800 ° C). Corrosion-resistant in the atmosphere, if it is an industrial atmosphere or a heavily polluted area, it needs to be cleaned in time to avoid corrosion. Suitable for food processing, storage and transportation. Has good processability and weldability. Plate heat exchangers, corrugated pipes, household goods (category 1 and 2 tableware, cabinets, indoor pipelines, water heaters, boilers, bathtubs), auto parts (w...

AI Technical Summary

Problems solved by technology

The work hardening phenomenon caused by the previous feed or the previous process seriously affects the smooth progress of the subsequent process

[0004] The traditional method of cutting stainless steel has many disadvantages: large cutting force, high cutting temperature, not easy to break chips, easy wear of tools, large linear expansion coefficient

Based on the above reasons, it is of great significance and practical value to use other cutting methods to obtain high-quality slits. At present, there is no optimal cutting process window for stainless steel with this plate thickness.