Operating Principle:Blank holder move downward first for preloading tight the riveting material to prevent two metal pieces moving under riveting pressure. Then the power head move downward for piercing the upper material, in the hollowing block, the rivet tail opened and formed a bell shape to locking base material under the impact of power head.
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Case 1: The thicker material should be put as base material if fasten the same metal material.
Case 2: The metal should be put as base material if fasten metal and non-metal material.