Measuring the spatter quantity which at the time of spot welding of welding

摘要

PROBLEM TO BE SOLVED: To provide a detection method for ensuring the soundness of a weld part by detecting acceptance/rejection (volumetric ratio of vacancies in nugget and the diameter of the nuggets) of the weld part formed by spot welding, in line as rapidly as possible and in non-destructive manner, and a detection device useful therefor.;SOLUTION: A method is the detection method of poor weld for determining the diameter of a nugget by measuring the quantity of spatter generated from a weld part when spot welding is performed on steel plates, and a device therefor comprises a spatter collection device connected to a collection hole for collecting spatter generated from the circumference of the weld part when the spot welding is performed, a spatter quantity measuring device for measuring the quantity of spatter collected with the spatter collection device, and a computer for processing the data on the quantity of spatter measured. The computer is configured to determine the diameter of the nuggets on the basis of the pre-grasped relationship.;COPYRIGHT: (C)2013,JPO&INPIT