Laser restoration technology of high-speed gear gearbox body

Abstract

The invention relates to a laser restoration method of a high-speed gear gearbox body, which comprises the following steps: A)processing the surface of a gear gearbox, performing a failure analysis on the blade; B)preheating the gear gearbox body, simultaneously preheating the local part to be restored of the gearbox body at 180-220 DEG C; C)according to the result of the failure analysis, optimizing the technological parameter, performing laser cladding layer by layer, performing laser cladding from a minimum point on the surface of the gearbox body, wherein the thickness of each layer of cladding layer is less than or equal to 0.3mm, the rear layer of the cladding layer covers the front layer of the cladding layer; the employed alloy powder comprises the following components by weight percentage: 0.5-1.0% of C, 19-23% of Cr, 2.0-5.0% of Si, 1.5-2.0% of B, 3.0-5.0% of W, 12-14% of Ni and the balance of Ni; and D)detecting. According to the invention, the oil-removal treatment is carried out for the gearbox body at 200 DEG C, high preheating temperature is not required, integral deformation is controlled, property influence of a structure besides a cladding part can be reduced, and cladding deformation is reduced.

Description

technical field [0001] The invention relates to a laser cladding process for an industrial gear box, in particular to a laser repair process for a high-speed gear box body. Background technique [0002] In the industry, transmissions are used in every industry. When the gear transmission is subjected to a huge torque in the transmission, it will cause biased wear to the bearing position of the transmission, resulting in failure. Domestic steel mills fail gears and bearings due to damage to the transmission every year. The direct economic loss is tens of millions of yuan. The design and manufacture of gearboxes are usually made of cast steel and plate parts, and the weldability of cast iron and cast steel is extremely poor. The use of ordinary surfacing welding methods can easily lead to deformation and welding cracks of the box, making the Repair effect failed. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a ...

AI Technical Summary

Problems solved by technology

[0002] In the industry, transmissions are used in every industry. When the gear transmission is subjected to a huge torque in the transmission, it will cause biased wear to the bearing position of the transmission, resulting in failure. Domestic steel mills fail gears and bearings due to damage to the transmission every year. Direct economic loss of tens of millions of yuan

The design and manufacture of gearboxes are usually made of cast steel and plate parts, and the weldability of cast iron and cast steel is extremely poor. The use of ordinary surfacing welding methods can easily lead to deformation and welding cracks of the box, making the Repair effect failed