The failure of drawing dies can be divided into two types: normal failure and early failure according to the time of occurrence.
Normal failure: Drawing die after a large number of production and use, due to friction and natural wear or slow to produce plastic deformation and fatigue crack, to achieve normal service life after the failure is a normal phenomenon, for normal failure. Early failure: The mold did not meet the design requirements of the time limit, both the collapse of the blade, fragmentation, break, and other early damage, or due to severe local wear and plastic deformation and can not continue to serve, for early failure. For the early failure of the mold, it is necessary to find out the causes of the cause, and strive to take remedial measures.
