2024-03-29T10:20:05Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00004183
2022-12-15T03:37:12Z
423:424:425
453:454
Heat Treatment of Welds Using Pulsed YAG Laser : dy on the Micro Repair Welding by Pulsed YAG Laser (Report 2)
パルスYAGレーザによる溶接部の熱処理 : パルスYAGによるマイクロ補修溶接の研究(第2報)
パルスYAGレーザによる溶接部の熱処理 : パルスYAGによるマイクロ補修溶接の研究(第2報)
渡辺, 健彦
47933
山田, 善治
47934
田村, 武夫
47935
Pulsed YAG laser
Repair welding
Laser heat treatment
Rotary cutter blade
Vickers Hardness
Alloy tool steels
Electric furnace
This study describes laser heat treatment of alloy tool steels SKD11 using pulsed YAG laser. When filler metal SUJ2 is welded to base metal SKD11 which metal is material of rotary cutter, the hardness of weld metal become lower than that of the base metal. In order to improve the hardness of weld metal which become lower than that of the base metal after laser welding, heat treatments using an electric furnace and pulsed YAG laser were carried out after laser welding, then examined the variation of hardness of weld metal after heat treatments. The obtained results are as follows. In the heat treatment using an electric furnace, the hardness of weld metal which become low against the base metal after laser welding become higher than that of the base metal under the conditions of heat treatment holding temperature at 180℃ and holding time from 30s to 120s, then take out the weld metal from the electric furnace and cooling from furnace temperature to room temperature. In the heat treatment using pulsed YAG laser, after laser welding in succession laser beam radiate at the surface of weld metal, the hardness of weld metal which become low against the base metal after laser welding become the same hardness as the base metal under the conditions of holding temperature at 180℃ and holding time from 30s to 120s, then cooling to room temperature.
journal article
溶接学会
2001-08
application/pdf
溶接学会論文集
3
19
433
439
溶接学会論文集
AN1005067X
02884771
https://niigata-u.repo.nii.ac.jp/record/4183/files/06_0017.pdf
jpn