| 摘要 |
<p>The drop forging process is used to make raised ornaments such as figurines from lead or its alloys, using an adjustable heating tunnel to provide a continuous supply of rough blank workpieces. The blanks may take the form of bars of an appropriate section and may have been subjected to a pre-rolling operation. The blanks can be heated close to their melting point to soften them and then passed to a die and matrix.</p> |
