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最近公布实施的GB7032—86“T型角焊接头弯曲试验方法”国家标准,系参照美日标准制定。该标准规定用T型角焊头标准试样,在静压下弯曲变形后根据焊接趾端有无裂纹及裂纹扩展特征,来评定钢材焊接性的优劣。在材料试验机上进行弯曲试验时,为保持弯曲角左右对称,应把试样安放在置于试验机平台上的专用装置中,试样立板夹持在装置的导向块槽内,试样底板平放在装置的支辊上,通过压头均匀并连续地向试样施加
Recently promulgated the implementation of GB7032-86 “T-fillet welded joint bending test” national standards, Department of reference to the United States and Japan to develop standards. The standard specifies the use of T-type horn welding head standard specimen, bending deformation under static pressure according to the weld toe crack and crack propagation characteristics to assess the pros and cons of steel weldability. In the material testing machine bending test, in order to maintain the bending angle bilaterally symmetrical, the sample should be placed in a special device on the platform of the testing machine, the sample plate is clamped in the device guide block groove, the sample floor Flat on the device’s roller, through the indenter evenly and continuously applied to the sample