The topdie is the important component of the complete set of pipe-bending die, the design of which directly impact the bending quality and the bending efficiency.
顶模是弯管全套模具的重要部件，它的设计直接影响弯管质量和弯管效率。
2
A piece of hot metal sufficient to slightly overfill the die shape is placed in the bottom die, and the topdie is forced against it, so that the metal takes the internal shape of the die.