Laser cladding method, laser head, laser and cladding system for realizing laser cladding method

Abstract

The invention relates to the technical field of laser cladding, and provides a laser cladding method, and a laser head, a laser and a cladding system for realizing the laser cladding method aiming atthe problems of deformation and performance degradation due to the fact that an existing method of laser cladding preheating on a machined workpiece base body cannot realize real-time online heat treatment and high heating input for preheating. The laser cladding method comprises the following steps that 1, outgoing lasers of the laser are divided into preheating lasers, cladding lasers and post-processing lasers; 2, the preheating lasers are irradiated on a workpiece to be processed, and the workpiece is preheated; 3, the cladding lasers are irradiated on the preheated workpiece to be processed to form a molten pool, and at the same time, alloy powder is blown into the molten pool formed on the surface of the workpiece to be processed; and 4, the post-processing lasers are irradiated on acladding layer after cladding, and post-annealing treatment is carried out on the cladding layer.

Description

technical field

[0001] The invention relates to the technical field of laser cladding, in particular to a laser cladding method, a laser head for realizing the method, a laser and a cladding system. Background technique

[0002] Laser cladding technology is an advanced manufacturing technology combining laser technology and processing technology, which has developed rapidly in recent years. As an advanced surface modification technology, it is widely used in the surface modification of materials and the repair of failed parts, which solves many problems in engineering practice and creates huge economic benefits in engineering practice.

[0003] Since the laser cladding process is a process of rapid heating and rapid cooling, the solidification speed of the molten pool is fast, the temperature gradient is high, and the thermal stress generated is high. Therefore, the material is easy to crack, especially when the hardness of the cladding material is high, the crack problem i...

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