机器锻造是自由锻造的主要方法，可锻造质量达到几百吨的大型锻件，这使得自由锻在重型机械制造中具有特别重要的作用。二十世纪60年代以后，锻造机械改变了从19世纪开始的，向重型和大型方向发展的趋势，转而向高速、***、自动、精密、专用、多品种生产等方向发展。例如，水轮机主轴、多拐曲轴、大型连杆、重要的齿轮零件，在工作时都承受很大的载荷，常采用自由锻造方法生产毛坯，使其具有很高的力学性能.满足使用要求。
Machine forging is the main method of free forging. It can forge large forgings with a quality of hundreds of t, which makes free forging play a very role in he***y machinery manufacturing. For example, the main shaft of a hydraulic turbine, a multi crank crankshaft, a large connecting rod, and important gear parts are subjected to he***y loads when they are working. Free forging is often used to produce blanks, so that they h***e high mechanical properties.
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，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, 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.
自由锻造所用工具和设备简单，通用性好，成本低。 同铸造毛坯相比，自由锻消除了缩孔、 缩松、气孔等缺陷，使毛坯具有更高的力学性能。锻件形状简单，操作灵活。
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, porosity and so on, so that the blank has higher mechanical properties. The shape of the forgings is simple and the operation is flexible.
拔长
也称延伸，它是使坯料横断面积减小、长度增加的锻造工序。拔长常用于锻造杆、轴类零件。
自由锻造的基本工序包括镦粗、拔长、冲孔、弯曲、扭转、错移、切割及锻接等。
Pulling length
Also known as elongation, it is a forging process to reduce the cross-sectional area of the billet and increase the length. Pullout is often used in forging rods and shaft parts.
The basic processes of free forging include upsetting, drawing, punching, bending, torsion, offset, cutting and forging.