stretch-flanging die

例句：

1. 1.The stretch-flanging die is used to make the metal surface smoother.
   拉伸成形模用于使金属表面更光滑。
2. 2.The engineer designed the stretch-flanging die with precision.
   工程师以精确度设计了拉伸成形模。
3. 3. The stretch-flanging die was a critical component in the manufacturing process.
   拉伸成形模是生产过程中的关键部件。