Experimental Study on High Power Laser Welding of Ship Steel Plate

Abstract

This article puts forward adopting the fast-flow axis high power CO2 laser to weld the ship steel plate and mainly <br />studies the influences of technical parameters to the seam. This article also analyzes and tests the welded products <br />which are in the conditions of laser power of 8 kW, welding speed of 1m/min and focus position below 3mm of the <br />workpiece. The results indicate that the distortion of laser welding is small, the ratio of depth and width are bigger than <br />2:1, and the structure is compact and has no deficiency and presents tiny martensite and few remnants austenite. Laser <br />welding of ship steel plate can realize shaping double sides up one time with single side welding by choosing <br />reasonable welding technical parameters. Therefore, the laser welding ship steel plate technique possesses high practical <br />values.