OXYGEN ARC FUSION BAR

• Main Authors: HARA KENICHI, SAKAI AKIHIKO
• Format: Patent
• Language: English; Japanese
• Published: 25.11.2022
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

To improve the fusing performance of an oxygen arc fusion bar that uses a thick cylindrical body as a fusion bar body and that does not use a combustion improver.SOLUTION: An oxygen arc fusion bar 10A comprises a fusion bar body 11 which is made of metal and which has a long cylindrical shape including an oxygen circulation hole 12 at its axis core part. In the oxygen arc fusion bar, D/T which denotes a ratio of a diameter D of the oxygen circulation hole 12 to a thickness T of the fusion bar body 11 is 1 or less, and a tapered surface 13 with a tapered shape and a taper angle θ of 70°- 90° is formed at an end of a base end side of the fusion bar body 11.SELECTED DRAWING: Figure 2 【課題】溶断棒本体として厚肉の筒体を使用し助燃材を使用しない酸素アーク溶断棒の溶断性能を向上させる。【解決手段】軸芯部に酸素流通孔１２を有する長尺円筒状で金属製の溶断棒本体１１を備える酸素アーク溶断棒１０Ａにおいて、溶断棒本体１１の肉厚Ｔに対する酸素流通孔１２の直径Ｄの比であるＤ／Ｔを１以下とし、溶断棒本体１１の基端側の端部に、先細り状でテーパ角度θが７０°以上９０°以下のテーパ面１３を形成した。【選択図】図２