| 摘要 |
PURPOSE:To work the sintered hard alloy parts of a shape having ruggedness at a low cost, and also, without having a defect by irradiating a sintered hard alloy heated to a specific temperature with a laser beam along a prescribed shape and cutting it. CONSTITUTION:In a state that a sintered hard alloy is heated at a temperature of >=200 deg.C, a laser beam is moved along the surface of the sintered hard ally. In such a way, while preventing the generation of a crack caused by a thermal shock, the sintered hard alloy can be worked in a short time and with high accuracy. |
