Nickel plating phosphorus steel welding method

Abstract

The embodiment of the invention provides a nickel plating phosphorus steel welding method. The welding method comprises the steps that a first laser module is used for outputting first laser; a secondlaser module is used for outputting second laser; a laser adapter is used for outputting composite laser, so that an area to be welded is welded through the composite laser, wherein the composite laser comprises the first laser and the second laser, the diameter of the focused spot of the first laser is less than that of the focused spot of the second laser, the first laser and the second laser of the composite laser are coaxial, and the contact area of two pieces of nickel plating phosphorus steel serves as the area to be welded. Through the welding method provided by the embodiment of the invention, two laser beams with different focused spot diameters are adopted, the weld penetration depth and the welding efficiency are ensured through the laser with the small focused spot diameter, and through the laser with the large focused spot diameter, a phosphorus layer of the area to be welded is destroyed, the volume of a molten pool is expanded, and the cooling speed of the molten pool is reduced so that the problem of a great number of pores existing in the welding process can be reduced.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of laser welding, in particular to a welding method for nickel-plated phosphorus steel. Background technique [0002] Electroless nickel-phosphorus plating is suitable for nickel-phosphorus alloy plating on the surface of iron parts, steel parts, phosphorus alloys, aluminum alloys and copper alloys after immersion in phosphorus. Non-toxic, heavy metal-free, and environmentally friendly. No electroplating equipment is required. Only need a constant temperature device, the coating is a bright nickel-phosphorus alloy layer, with excellent corrosion resistance and excellent bonding force. The plating solution has strong stability, and its service life exceeds 12 cycles. Widely used in electroless nickel-phosphorus plating on various metal and non-metal surfaces. [0003] Electroless nickel-phosphorus alloy coating can obtain uniform, dense and bright nickel-phosphorus alloy coating ...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a welding method for nickel-plated phosphorus steel to solve the problem of a large number of pores during welding in the prior art

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