自由鍛造所用工具和設(shè)備簡單，forging生產(chǎn)廠家，通用性好，forging報(bào)價(jià)，成本低。 同鑄造毛坯相比，自由鍛消除了縮孔、 縮松、氣孔等缺陷，使毛坯具有更高的力學(xué)性能。鍛件形狀簡單，forging，操作靈活。

Free forging tools and equipment are simple， versatility and low cost. Compared with the casting blank， the free forging eliminates the defects such as shrinkage porosity， porosity，forging設(shè)備， porosity and so on， so that the blank has higher mechanical properties. The shape of the forgings is simple and the operation is flexible.

鐓粗 鐓粗是對原坯料沿軸向鍛打，使其高度減低、橫截面增大的操作過程。這種工序常用于鍛造齒輪坯和其他圓盤形類鍛件。鐓粗分為全部鐓粗和局部鍛粗兩種。

Upsetting and upsetting is the process of forging the original billet along the axis， reducing its height and increasing its cross section. This process is usually used to forge gear blanks and other disc shaped forgings. The upsetting is divided into two kinds of upsetting and local forgings.

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