由于热变形形成纤维***，会使金属的力学性能出现异向性，即纵向力学性能指标中的A，Z，Ak比横向相应的指标大得多，两个方向上的强度Rm。Re差别不大。

Due to the formation of fibrous microstructure by thermal deformation, the mechanical properties of metals will be different. That is, A, Z and Ak in longitudinal mechanical properties are much larger than those itransverse direction, and the strength in two directi is Rm. Re is not very different.

锻造生产加热设备和锻压设备不可少，这些设备释放大量热能，需要我们在通风净化环境中进行。锻造工具种类繁多，也是密集型作业，要求每个技术人员都不能马虎，坚守自己的岗位，嘈杂的环境需要冷静的技师，不能随意操作。

Forged production of heating equipment and forging equipment can not be less, these release a large amount of heat energy, we need to carry out in the ventilation and purification environment. There are various kinds of forging tools, which are also intensive operati. Every technician is not allowed to be careless and stick to their. The noisy environment needs a cool technician and can not be arbitrarily operated.

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.