锻件表面的技术要求，包括表面粗糙度和表面缺陷量两个方面。
The technical requirements of the surface of the forgings include two aspects of the surface roughness and the amount of the surface defects.
1、表面粗糙度
1, surface roughness
锻压过程中，由于表层金属被氧化、外来物嵌入、金属流动不均匀、模具表面不平、银后的辅助工序不当等多种因素的影响，都会使锻件表面呈现峰谷相间和凹凸不平的微观几何特征，这种特征一般用粗糙度来表示。
The forging process, because the metal surface affected by auxiliary processes, oxidation, foreign object embedding, uneven metal flow and die surface uneven, silver after improper factors, micro tures will peak and valley and the uneven surface so that the characteristics of the forging, generally used to represent roughness.
锻件的表面粗糙度待征与机械加工表面州苗木  保定电动门 保定空压机 化粪池模具 微型蠕动泵 保定强夯 收费岛模具比，有如下特点：
The surface roughness of the forgings is compared to the machined surface, which has the following characteristics: