镦粗 镦粗是对原坯料沿轴向锻打，forging，使其高度减低、横截面*的操作过程。这种工序常用于锻造齿轮坯和其他圆盘形类锻件。镦粗分为全部镦粗和局部锻粗两种。

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 i* two kinds of upsetting and local forgings.

自由锻造是利用冲击力或压力使金属在上下砧面间各个方向自由变形，不受任何限制而获得所需形状及尺寸和一定机械性能的锻件的一种加工方法，forging价格，简称自由锻。

Free forging is a processing method of forging parts， which can make metal in all directi* of the anvil between the upper and lower anvil，forging哪家好， and obtain the required shape and size and certain mechanical properties by the impact force or pressure， and the free forging is called free forging.

碾环是指通过*设备碾环机生产不同直径的环形零件，主要用来生产汽车轮毂、火车车轮等轮形零件。****锻造包括辊锻、楔横轧、径向锻造、液态模锻等锻造方式，forging厂家，这些方式都比较适用于生产特殊形状的零件。

Roller ring refers to the production of circular parts with differen*ameters through the roller ring machine of special equipment， which i*ainly used to produce wheel hub， train wheel and other wheel shaped parts. Special forgings include roll forging， cross wedge rolling， radial forging， liquid forging and so on. These methods are suitable for producing parts with special shape.