Dynamic welding method of laser welding machine

Abstract

The invention discloses a dynamic welding method of a laser welding machine. Through the dynamic welding method of the laser welding machine, it can be well guaranteed that welding joints are linear. The head edge and the tail edge of a front stainless steel roll and the head edge and the tail edge of a rear stainless steel roll are fed to a welding machine, it is guaranteed that the edges to be welded to are located in the actual welding area of the welding machine, shears of the welding machine shear the edges of strip steel, the width of the strip steel is measured through an external sensor, and the adjustment process of a center line is achieved; accurate welding parameters are called according to actual material specifications, and a laser head moves from the driving side to the operating side so that the welding process of the strip steel can be completed. First, data of the actual welding joints are acquired; second, the data are analyzed and screened, and calculation of deviation points is performed; third, displacement adjustment reference data are generated according to data deviation. The dynamic welding method of the laser welding machine has the advantages that it is guaranteed that the welding joints are linear, a longitudinal traction track of a welding gun vertically coincides with the welding joints in a three-dimensional space, the labor intensity of production and operation staff is relieved, efficiency and stability of equipment are improved, the welding success rate is increased, and the automation degree is improved.

Description

technical field [0001] The invention relates to a dynamic welding method of a laser welding machine. Background technique [0002] With the expansion and development of market demand and industrial scale, the metallurgical industry has begun to design and install a large number of continuous annealing and pickling lines for the process and quality improvement of stainless steel products when investing in cold-rolled products or expanding the treatment process line. This just means that the automatic welding machine that is used for strip welding is more and more widely used. [0003] The CAPL production line of the existing cold rolling factory adopts advanced laser automatic welding machine, which mainly has the characteristics of good welding quality and small heat-affected zone. The welding machine realizes the whole process of automatic welding step execution, and is equipped with other peripheral equipment for strip positioning and quality monitoring system (QAS) befor...

AI Technical Summary

Problems solved by technology

However, limited by the longitudinal movement control method, it requires a high splicing state of the welding medium. Under the traditional design and application model, the welding effect can no longer meet the high-precision welding quality requirements. The main performance is that the laser welding machine needs to ensure the splicing of the medium The welding seam is in a straight line state, and the vertical traction track and the welding seam are required to coincide vertically in the three-dimensional space, otherwise it will cause the actual laser focus point to deviate from the welding seam. In the field of stainless steel processing, when the welding failure occurs, the If the welding seam stress drops due to poor welding effect, it will cause belt breakage or tearing, which has a serious impact on the actual production site

In the conventional countermeasures, the remedial measures of manual visual inspection and manual repair welding are usually adopted. This kind of response method increases the labor intensity, and at the same time, the manual welding method cannot completely weld the steel.

This will cause delays in actual production scheduling, poor production efficiency and process control, and ultimately have an impact on economic benefits

[0005] Due to the small thermal effect area of ​​the laser welding machine, if the track or other facilities that pull the laser head move during the welding process deviate, the actual laser focus will not be able to fully act on the joints of the welding objects, etc.