Method for measuring laser-wire space

Abstract

The invention discloses a method for measuring a laser-wire space in a special welding technology of laser wire filling. According to the method disclosed by the invention, the best laser-wire space DAL required by formation of weld joints can be accurately measured through an experiment; the laser-wire space DAL indicates a distance from a laser spot center to a contact point of the diameter center of a welding wire to the surface of a workpiece; when the laser-wire space is 0mm, although the front faces of the weld joints are molded preferably, the melting widths of the back sides are obviously different from each other in different areas, acquisition of the weld joints with good uniform performance is not facilitated. When the welding velocity is 4.2m / min, the laser-wire space is strictly controlled to be in a range of plus 0.8 to plus 1.4; when the welding velocity is 3.0m / min, the laser-wire space needs to be controlled in a range of plus 0.4 to plus 2m; if the laser-wire space isover-large, because a distance between the welding wire and a heat source is longer, the laser wire cannot be completely molten under the effect of plasma cloud, so that the defects of undercuts, welded leakage, wire stationing and the like locally produced on the weld joints are caused.

Description

technical field [0001] The present invention relates to a special laser wire-filling welding technology for the IC equipment manufacturing industry. In the laser wire-filling welding technology center, the distance between the light wires has a great influence on the shape of the weld seam, which is an important welding variable. The present invention describes a method for measuring the distance between optical filaments. Background technique [0002] In laser wire-filling welding aluminum alloy technology, the distance between the light wires has a great influence on the shape of aluminum alloy laser wire-filling welding, but measurement errors are often caused by unprofessional measurement tools and incorrect measurement methods, resulting in inconsistent weld formation. Accurate measurement of filament spacing D AL It is convenient to control variables in production and ensure the quality consistency of welding products. By means of the present invention, the optimal l...

AI Technical Summary

Problems solved by technology

[0002] In laser wire-filling welding aluminum alloy technology, the distance between the light wires has a great influence on the shape of aluminum alloy laser wire-filling welding. However, measurement errors are often caused by unprofessional measuring tools and incorrect measurement methods, resulting in inconsistent weld formation.

Images