通过锻造能消除金属在冶炼过程中产生的铸态疏松等缺陷，优化微观***结构，同时由于保存了完整的金属流线，锻件的机械性能一般优于同样材料的铸件。
Forging can eliminate the defects such as casting porosity and so on during the ***elting process, and optimize the microstructure. At the same time, because of the intact metal flow line, the mechanical properties of the forgings are generally better than those of the same materials.
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.
选择好的锻件产品跟锻造工艺或者锻造厂家肯定是有关系的，现在有越来越多的锻件厂走向市场，对此，用户挑选锻件产品的难度就增加了。如果对锻件缺乏***的认识，那么，在选择的时候就会多很多顾忌。
The selection of good forging products is closely related to forging process or forging factories. Now more and more forgings factories are going to the market. Therefore, users" difficulty in selecting forgings is increasing. If the forgings are lack of professional knowledge, there will be a lot of scruples when choosing.