A laser welding process for the root band of a band saw blade

Abstract

The invention discloses a laser welding process for a root zone with a saw blade. According to the laser welding process, a laser device with the wavelength range of 380nm to 3900nm is selected; a welding laser head with the collimation focal distance of 100mm to 300mm, the focusing focal distance of 100mm to 300mm and the focusing light spot of 0.1mm to 0.4mm; the two ends of the root zone with the saw blade are fixed on the same horizontal plane through clamps; the end openings at the two end parts of the root zone with the saw blade are arranged oppositely and a welding line is formed between the two end openings; the welding laser head is arranged just above the welding line; the welding laser head is used for welding and connecting the end openings at the two end parts of the root zone with the saw blade under a protection atmosphere; the welding speed is 2m / min to 2.8m / min; after the welding is finished, the root zone with the saw blade is subjected to annealing treatment. According to the laser welding process, the machining quality of a welding process is guaranteed, the dependence of production quality on manual operation experiences is reduced to the greater extent, and the performance stability of a welding opening is improved.

Description

technical field [0001] The invention relates to the field of band saw blade root band welding, in particular to a laser welding process for band saw blade root bands. Background technique [0002] Bimetallic band saw blade products were introduced, digested and applied and promoted in my country in the 1980s. The method of use is to select the appropriate saw blade specification, tooth shape, length, etc. According to the customer's order, the manufacturer cuts the circular band saw blade of the corresponding specification and tooth type into a single circular saw blade of the corresponding length, and uses a welding machine for welding, annealing, grinding and other processing. The welding port of the root band saw blade is in use. It has to withstand the test of various strengths such as stretching, twisting, and fatigue, so the requirements for welding joints are relatively high. [0003] At present, the root band welding of large-scale manufacturers all use IDEAL special ...

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a laser welding process for the root band of the band saw blade, which can weld the root band of the band saw blade into a ring shape relatively simply, thereby solving the problem that there are many factors affecting the welding quality and the welding slag in the existing flash welding process. Many problems (affecting production efficiency and on-site production environment), difficulty in controlling the pitch of the welding mouth, and the existing laser welding process requires that the welding seam protrude and the grinding workload is large

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