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通過鍛造能消除金屬在冶煉過程中產生的鑄態疏松等缺陷，優化微觀組織結構，同時由于保存了完整的金屬流線，鍛件的機械性能一般優于同樣材料的鑄件。

Forging can eliminate the defects such as casting porosity and so on during the smelting 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.

在考慮鍛造工藝時特別是后一火的鍛造時，應盡量避免在臨界變形程度下進行，以免得到粗大晶粒組織。具體來說，高溫下金屬塑性好，變形抗力小，應采用遠大于臨界變形程度的較大變形量鍛造；低溫修正時采用低于臨界變形程度的小變形量進行局部修整。

When the forging process is cidered, especially when the last fire is forged, the critical deformation should be avoided as far as , so as to avoid coarse grain structure. Concretely speaking, high temperature metal has good plasticity and small deformation resistance. We should adopt large deformation amount forging far greater than critical deformation degree. When low temperature correction is used, small deformation below critical deformation degree should be used for local trimming.

若因溫度和變形程度選擇不當而得到粗大晶粒時，可利用熱處理相變細化晶粒組織，但對于熱處理中不發生相變的鋼種，如奧氏體鋼，就必須在鍛造過程中獲得細小而均勻的晶粒組織，因此對這樣的材料在鍛造時須加倍注意。

If the temperature and degree of deformation and improper selection of coarse grains, the grain refinement phase change heat treatment, but for the steel phase transition does not occur in the heat treatment, such as austenitic steel, it must be in the forging process have fine and uniform grains, so this kind of material in the forging must pay more attention to.

選擇好的鍛件產品跟鍛造工藝或者鍛造廠家肯定是有關系的，現在有越來越多的鍛件廠走向市場，對此，用戶挑選鍛件產品的難度就增加了。如果對鍛件缺乏專業的認識，那么，在選擇的時候就會多很多顧忌。

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.