MULTI-LAYER BUILD-UP WELDING DEVICE

摘要

PURPOSE:To eliminate the need for adjustment by manpower for each of the respective layers and to automate fully the entire stage by using a multi-layer build-up welding device having a welding torch provided with a sensor for detecting the sectional shape of the bead of the previous layer and a moving device and a control device for controlling both positions. CONSTITUTION:A multi-layer build-up welding device is mounted on a weldment 12 and at every ending of one pass of welding, the shape of the groove section is measured and the result thereof is judged. The aiming position of a welding torch for the succeeding layer is controlled by the result thereof and welding is thereby successively overlapped. The measurement of the sectional shape of the groove is accomplished in this case by moving a sensor 22 of a contact type or the like along the section of the bead 25 for each one pass and determining the Y-Z axis coordinate points in the lowermost position A within the section or at both ends B and C of the previous layer 25.