| 摘要 |
PROBLEM TO BE SOLVED: To improve the reliability of the welding quality, and to certify the appropriate quality realized under an appropriate condition of execution to a third party by combining the data on the welding output side with the heat data measured at a plurality of positions on the welding input side, and objectively evaluating the combined data by the comparative analysis of the theoretical values and actual values. SOLUTION: A groove 5 is welded in the advancing direction 2 using a backing 1. The data on the welding output side (a welding machine side) is measured at appropriate time intervals over the whole time during the welding work, and the heat data on the welding input side (a base metal side) is measured by a plurality of heat sensors A and B to understand the speed, the position, etc., other than the temperature at the same time. The data is combined with each other, and compared with the theoretical and actual values for analysis to objectively evaluate the combined data by the numerical values in the summary sheets, graphs, etc. The welding output condition can be corrected on the real time basis making use of the data. The input, comparative analysis, summation, graphing and evaluation of the data are achieved by making use of computers.
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