BS EN ISO 10447:2015 pdf free

BS EN ISO 10447:2015 pdf free.Resistance welding一Testing of welds一Peel and chisel testing of resistance spot and projection welds
When used for setting welding parameters, where it is not practical to use actual components, separate welded test pieces may be used. The test pieces shall be produced from the same material used for the component, and welded under conditions adapted to simulate and produce the same required weld quality. The effects of different shunt or impedance conditions should be taken into account when producing the test pieces by inserting sufficient material in the throat of the machine to approximate the magnetic effect of the workpiece under production conditions.
For destructive chisel testing, a chisel shall be driven between the sheets and adjacent to the weld until fracture occurs in or adjacent to the weld, or until severe deformation occurs. The aim of this test is to separate the sheets so that a weld plug or interfacial fracture occurs to allow weld size to be determined.In the case of a weld between three or more sheets, the test shall be made between each adjacent pair of sheets.
For non-destructive chisel testing, a chisel shall be driven between the sheets and adjacent to the weld until the material yields or bends near the weld. The aim of this test is to obtain an indication that a weld has been made without causing fracture to occur in or adjacent to the weld. In the case of a weld between three or more sheets, the test shall be made between each adjacent pair of sheets. If fracture has not occurred after testing, the components shall be restored to their original shape.The sheets near the weld are slowly peeled apart until all welds under test are completely fractured.
A roller tool, pincers, pliers, vise, or mechanized equipment (see Figure 2 and Figure 5) are typically used. If a roller tool is used, a diameter of 30 mm is recommended for sheet thicknesses up to 1 mm in accordance with Figure 5a. Testing using a vise and pliers shall be in accordance with Figure 5b.For materials that are too thick or too strong to be tested manually, mechanized testing in accordance with ISO 14270 is recommended. The applied force may be generated by means of a normal tensile testing machine or other suitable mechanized equipment.BS EN ISO 10447 pdf free download.