Patent ID: 11890694
Assignee: NIPPON STEEL CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B  C  F | IPC B  C  F

Claim 2:
3. The method for manufacturing a welded structure according to claim 2, wherein the welded structure comprises a nugget and when a diameter of the nugget is dng(mm), a tip diameter of first rod-shaped electrode body is d (mm), and an average thickness per steel sheet of the steel sheets is tave(mm), the spot weld portion satisfies a condition (a) or a condition (b) below in accordance with the average thickness tave(mm)

(a)dng>d(tave)1/2 when 0.5 mm≤tave<1.1 mm  (1)

(b)dng>1.05d when 1.1 mm≤tave≤2.6 mm  (2).