| 摘要 |
A method of clinching includes contacting a punch to stacked workpieces and rotating the punch to generate frictional heat in the workpieces, and advancing the punch into the workpieces to form a mechanically-interlocking joint. Rotation of the punch may be stopped prior to advancing the punch into the stacked workpieces. The first workpiece may be formed from a first material and the second workpiece formed from a different, second material. One of the first and second materials may be magnesium or a magnesium alloy. The mechanically-interlocking joint is characterized by the absence of intermetallic compounds, and may be substantially hermetically sealed against passage of fluids and gasses. A hole may be formed in one of the workpieces and, prior to contacting the punch to the workpieces, the hole aligned substantially coaxially with the punch. Forming the mechanically-interlocking joint may include deforming both the first and second workpieces.
|
