Laser cladding composite repair manufacturing method and application thereof

Abstract

The invention relates to a laser cladding composite repair manufacturing method. The method comprises the steps as follows: step 1, laser cleaning; step 2, laser preheating: continuously irradiating the surface of a to-be-repaired workpiece by a laser unit to preheat the to-be-repaired workpiece, marking emergent laser of the laser unit as preheating laser, wherein the spot shape of the preheatinglaser is round or rectangular, the area of preheating spots is 6 mm<2>-20 mm<2> and the scanning speed of the preheating laser spots is 8 mm/s-20 mm/s; step 3, laser cladding: irradiating the preheated to-be-repaired workpiece by cladding laser, wherein the spot shape, spot area and scanning speed of cladding laser are identical with those of the preheating laser; step 4, machining. The inventionalso relates to an application of the laser cladding composite repair manufacturing method. The method can be applied to repair manufacturing of high-carbon steel workpieces and high-alloy steel workpieces; laser is used as machining means, so that the method is clean, efficient, green and environmentally friendly.

Description

technical field [0001] The invention relates to a laser cladding composite repair manufacturing method and its application. Background technique [0002] In recent years, with the continuous emergence of high-power and high-performance laser processing equipment, laser cladding and laser rapid prototyping technologies, which are closely related to additive manufacturing and 3D printing technology, have increasingly attracted great attention from all over the world. , electronics, aerospace, heavy industry machinery and other fields have been developed rapidly. [0003] At present, a large number of various production equipment and parts in my country's metallurgy, mining, automobile, and heavy industry machinery industries have entered the scrapping period; a small part of them has been repaired and remanufactured by traditional welding, electroplating, spraying and other technologies and then reused. However, most of the equipment is directly stacked in the warehouse and sc...

AI Technical Summary

Problems solved by technology

[0003] At present, a large number of various production equipment and parts in my country's metallurgy, mining, automobile, and heavy industry machinery industries have entered the scrapping period; a small part of them has been repaired and remanufactured by traditional welding, electroplating, spraying and other technologies and then reused. However, most of the equipment is directly stacked in the warehouse and scrapped. In order to continue production, the enterprise has to spend a lot of money to purchase new equipment, which increases the economic burden of the enterprise.

With the further development of laser cladding technology, laser cladding technology has gradually emerged as a new method in the field of repair and remanufacturing; Cleaning and other pretreatments are required before laser cladding operations; at present, chemical reagents such as alcohol and acetone are generally used to remove oil stains, and grinding and sandblasting are used to remove rust, which not only wastes time, but also causes serious pollution to the environment : Chemical reagents cause water pollution and air pollution; grinding or sandblasting will cause a lot of dust, first, it will have a great impact on the health of operators, and second, it will cause serious smog, which does not meet environmental protection requirements

[0004] In order to solve the above problems, it is urgent to invent a laser cleaning and laser cladding composite manufacturing method to solve the current problem that a large amount of pretreatment work is required before laser cladding

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