Study On Cracking Reason And Settling Measures Of The Shell Of Terminal Block While Correcting Roundness

Terminal is used to realize the electrical connection of an accessory products and belongs to the category of connector, which is the basis of power equipment parts and provides electrical wiring a stable and reliable connection through mechanical connection mode. Wade Miller’s SAKDU series terminals, designed for the Asian market, are mainly used in electric power, transportation, energy, process control and other industries.In manufacturing process,pressing line frame fracture problems occurred. It will delay product scheduled promotion and affect the reputation in the Asian market.The reasons of the terminal clamping fram crack research and analysis.the cracking clamping frame of the chemical composition analysis, mechanical properties testing, loading process is affected by stress analysis and cracking mechanics analysis, heat treatment process of micro hardness structure analysis, hydrogen embrittlement in electroplating process analysis, results show that the clamping frame materials used comply with the design requirements, clamping frame cracking is not material quality problems caused by. Through the analysis of the cracking morphology to infer the clamping frame hydrogen embrittlement. Stamping process unreasonable is the main cause of tube cracking. In the electroplating process of the clamping frame after repeated acid solution immersion, hydrogen ions generated hydrogen embrittlement in processing and the formation of the cracking source. Under the action of the torque was cracked. Wire in the cracking reason for the box, through research, take the the wire pressing frame optimization of stamping process, plating to repair measures of hydrogen technology to solve terminal crimping box loaded cracking problems.