| 摘要 |
Laser beam lap welding of coated sheets (1,2), by processor-controlled positioning of a laser beam focal spot center (M) within an upper sheet radius region forming a gas venting space (4), is new. A laser beam lap welding process for coated sheets (1,2) comprises: (a) positioning the two sheets on top of one another at one side of the lap seam (3) and slightly spaced apart as a result of an upper sheet radius on the other side of the seam to form a gas venting space (4); and (b) detecting and evaluating the upper sheet radius by means of a sensor (8) and a processing unit (9) to position the focal spot center (M) of the laser beam (7) and thus the lap seam in a narrow desired region within the upper sheet radius. An Independent claim is also included for equipment for carrying out the above process. |
