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Test machine for tensile shear strength of welded joints as per ISO 14273

Test machine for tensile shear strength of welded joints as per ISO 14273

Spot welding refers to a welding method in which a columnar electrode is used to form a welding point between two overlapping working contact surfaces. First, pressurize the workpiece to make close contact with the workpiece, then turn on the current, and use the working contact under the action of resistance heat. It melts and cools to form a solder joint. Projection welding is a type of spot welding, which uses the original profile, chamfer, bottom surface or prefabricated bumps of the part to weld to a large plane. Projection welding is mainly used for welding stamping parts of mild steel and low alloy steel. There are many types of projection welding. In addition to plate projection welding, there are projection welding of nuts and screws, cross projection welding of wires, pipe projection welding, T-shaped projection welding of plates and projection welding of stamping parts.

The products welded together by spot welding and projection welding will bear certain tensile force, pressure and shear force in the actual use process. In order to ensure that the welded products can withstand these tensile, compressive and shearing forces, it is necessary to use a test instrument to test the welded joints to provide a reference for actual use. The microcomputer-controlled welding seam shear tensile testing machine produced by our company can be used to detect the shear tensile force at the welding point. The shear tensile testing machine is controlled by computer software. During the test, the test force, test curve and test time can be displayed in real time. After the test, the test results can be saved and the test results can be printed by connecting to a printer.

The relevant test methods based on the microcomputer-controlled weld shear tensile testing machine are as follows：

ISO 14273 resistance welding – destructive testing of welds --- specimen dimensions and procedure for tensile shear testing resistance spot and embossed projection welds

GB/T 39167 test methods of tensile for resistance spot and embossed projection welds

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