62 results about "Laser-hybrid welding" patented technology

The invention provides a shielding gas knife for laser hybrid welding. The shielding gas knife comprises a left gas inlet pipe joint, a right gas inlet pipe joint, a gas knife body, an upper gas knife body cover plate and a lower gas knife body cover plate; the lower end of the left gas inlet pipe joint is communicated with the left end of a gas inlet flow channel formed in the gas knife body, the lower end of the right gas inlet pipe joint is communicated with the right end of the gas inlet flow channel formed in the gas knife body, the gas inlet flow channel is communicated with compressed gas flow jetting channels of the gas knife body, and the compressed gas flow jetting channels penetrate through the inner side face of the gas knife body to extend out. According to the shielding gas knife, the gas pipe joints can be connected with a shielding gas pipe with the diameter of 12 mm, large flow is introduced by the gas knife body, gas which is compressed through gas guide holes and sped up is large in flow and high in pressure, the gas passes through the first compressed gas flow jetting channel and the second compressed gas flow jetting channel and then uniformly forms a high-speed surface body cutting protection window, and therefore the phenomenon that dust, spatter and the like on the surface of a workpiece penetrate through the protection window to enter a laser processing head in the hybrid welding process can be effectively prevented.