Technical Solution for Laser Welding of Thin Sheets-ShangHai RunQia Electronics Technology Co.,Ltd.

Technical Solution for Laser Welding of Thin Sheets

With the continuous expansion of China’s thin stainless steel sheet market, its applications have extended into various production sectors. Accordingly, the welding of thin stainless steel sheets has become a critical procedure in the manufacturing process. However, due to the inherent characteristics of thin stainless steel sheets, welding poses considerable challenges and has long been a technical bottleneck in this field.

Thin stainless steel sheets feature a very low thermal conductivity, approximately one-third that of ordinary low-carbon steel, along with low structural restraint. During welding, localized heating and cooling generate uneven stress and strain. Longitudinal shrinkage of the weld seam exerts compressive force on the edge of the thin stainless steel sheet. Excessive compressive force easily causes wavy deformation of the workpiece, which not only affects appearance but also impairs structural quality. In addition, problems such as overheating and burn-through frequently occur.

The emergence of fiber laser welding machines effectively solves these difficulties. The technology transmits the laser beam through an optical fiber, and after a series of optical processing, performs formal welding. It supports both pulsed and continuous welding modes, successfully addressing common problems in thin stainless steel welding such as easy deformation and poor weld appearance.

The equipment is equipped with a high-intelligent camera monitoring system, enabling convenient and precise operation. It supports non-contact welding for various complex weld seams and is fully compatible with automated production lines, representing a major advantage in laser welding technology.

Higher equipment automation delivers greater welding accuracy. Precise control of system parameters ensures aesthetic appearance and structural integrity of welds, fundamentally guaranteeing the service quality of workpieces — the core objective of welding.

This fiber laser welding machine adopts an imported focusing cavity from the UK, featuring high temperature resistance and corrosion resistance. Its long service life ensures stable and continuous laser output, achieving excellent welding results for thin sheets with a thickness ranging from 0.5 mm to 3 mm.