Quality inspection method applied to welding position of connecting column and plate

Abstract

The invention provides a quality inspection method applied to the welding position of a connecting column and a plate. The quality inspection method applied to the welding position of the connecting column and the plate is characterized in that the quality inspection method comprises the following steps that (1) appearance inspection of the welding position is carried out, specifically, whether the following conditions are met simultaneously or nor is judged, a, solder overflows from at least one side of the plate; b, cracks do not exist at the position, opposite to one side of welding surface, of the connecting column and / or the plates, or the cracking length of existing cracks is less than or equal to 2mm; if so, the judgment that the appearance of the welding position of a product is qualified is carried out, otherwise, judgment that the appearance of the welding position of the product is unqualified is carried out; and (2) firmness inspection of the welding position is carried out, specifically, the front surface and back surface of the plate are subjected to bending for many times separately, after each bending is carried out, the plate is straightened, then bending for nexttime is carried out, if the plate falls off or the welding position cracks, the judgment that the firmness of the welding position of the product is unqualified is carried out, otherwise, the judgmentthat the firmness of the welding position of the product is qualified is carried out. The quality inspection method applied to the welding position of the connecting column and the plate is uniform,normative, simple and practicable.

Description

technical field [0001] The invention relates to the technical field of quality inspection of fasteners, in particular to a quality inspection method applied to the welding part of a connecting column and a plate. Background technique [0002] Welding is a common fastening method. At present, the current copper column on the meter is also fixed on the copper sheet by welding. The schematic diagram of its structure is as follows figure 1 As shown, one side of the welding end 4a of the current copper column 1a is thinned along the thickness direction to form a stepped surface 3a against the lower surface of the red copper sheet 2a, and the lower surface of the red copper sheet 2a is welded on the current copper On the step surface 3a of the welding end 4a of the column 1a, the width of the copper sheet 2a is less than the width of the step surface 3a of the current copper column 1a, and the depth of the step surface 3a is generally set to be approximately equal to the thickness...

AI Technical Summary

Problems solved by technology

However, there is currently no unified and standardized quality inspection method designed for the welded parts of the connector and the plate.

Images