LAP FILLET WELDED JOINT, AND, METHOD FOR MANUFACTURING LAP FILLET WELDED JOINT

• Main Authors: KODAMA SHINJI, MATSUBA MASAHIRO, ISHIDA KINYA
• Format: Patent
• Language: English; Japanese
• Published: 17.10.2023
• 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 reduce a porosity defect rate in a weld bead of a lap fillet welded joint.SOLUTION: A lap fillet welded joint of the present disclosure joins a first steel plate and a second steel plate via a weld bead, and satisfies the following requirements (A) to (D): (A) A total adhesion amount of a plated layer existing between the steel plates is 10 g/m2 or more and 120 g/m2 or less. (B) A thickness TA of one of the first steel plate and the second steel plate and a thickness TB of the other of the first steel plate and the second steel plate satisfy the following relationship (1). (C) A gap G between the steel plates is equal to or less than the plate thickness TA. (D) A height H of the weld bead, the plate thickness TA, and the gap G satisfy the following relationship (2). TB≤TA≤2 mm...(1), H≤TA+G+5 mm...(2).SELECTED DRAWING: Figure 1 【課題】重ね隅肉溶接継手の溶接ビードにおける気孔欠陥率を低減する。【解決手段】本開示の重ね隅肉溶接継手は、溶接ビードを介して第１鋼板と第２鋼板とを接合したもので、以下の要件（Ａ）～（Ｄ）を満たすものである。（Ａ）鋼板間に存在するめっき層の合計の付着量が、１０ｇ／ｍ２以上１２０ｇ／ｍ２以下であること。（Ｂ）第１鋼板及び第２鋼板のうちの一方の板厚ＴＡと、第１鋼板及び第２鋼板のうちの他方の板厚ＴＢとが、下記関係（１）を満たすこと。（Ｃ）鋼板間の隙間Ｇが、板厚ＴＡ以下であること。（Ｄ）溶接ビードの高さＨと、板厚ＴＡと、隙間Ｇとが、下記関係（２）を満たすこと。ＴＢ≦ＴＡ≦２ｍｍ ...（１）Ｈ≦ＴＡ＋Ｇ＋５ｍｍ ...（２）【選択図】図１