鍛件表面的技術要求，包括表面粗糙度和表面缺陷量兩個方面。
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
鍛壓過程中，由于表層金屬被氧化、外來物嵌入、金屬流動不均勻、模具表面不平、銀后的輔助工序不當等多種因素的影響，都會使鍛件表面呈現峰谷相間和凹凸不平的微觀幾何特征，這種特征一般用粗糙度來表示。
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 www.gangmoju.com.cn www.gaibanmoju.org.cn www.hupomojuu.cn www.hupomoju.org.cn www.ludenggan.net.cn www.feijiudianlan.cngeometric features will peak and valley and the uneven surface so that the characteristics of the forging, generally used to represent roughness.
鍛件的表面粗糙度待征與機械加工表面保定平面設計培訓 保定室內設計培訓   保定廚房排煙 雄安管道通風 相比，有如下特點：
The surface roughness of the forgings is compared to the machined surface, which has the following characteristics: