沖壓位于汽車制造四大工藝之首，其重要程度不言而喻，而沖壓件作為汽車車身質量保證的基礎，它的質量的好壞直接關系到整輛車的優劣，每個整車廠都極為重視，同時隨著中國汽車產業的不斷發展，消費者消費理念的日趨成熟，消費者對汽車車身質量也更加關注，因此控制沖壓件的質量十分重要，而質量控制方法是否有效，將決定沖壓件質量控制的成敗。本文將對沖壓件從材料到成品的整個過程質量控制方法進行論述。
Stamping is the first of the four automobile manufacturing processes, and its importance is self-evident. As the basis of automobile body quality assurance, the quality of stamping parts is directly related to the quality of the whole car. Every vehicle factory attaches great importance to it. At the same time, with the continuous development of China's automobile industry and the maturity of consumer consumption concept, consumers are more concerned about the quality of automobile body Note: therefore, it is very important to control the quality of stamping parts, and whether the quality control method is effective or not will determine the success or failure of quality control of stamping parts. This paper will discuss the whole process quality control method from material to finished product of stamping parts.
沖壓件可分為外板件、準外板件和內板件，如圖1所示。外板件是指目視易發現的制件，又稱外覆蓋件，如發動機蓋外板、頂蓋、側圍外板等；準外板件指目視不易發現，但相關部位開起后可見的制件，如發動機蓋內板、車門內板、行李箱蓋內板等；內板件指目視不被關注或不能被發現的制件，如輪罩、地板、各種梁件等。
Stamping parts can be divided into outer plate, quasi outer plate and inner plate, as shown in Fig. 1. The outer panel refers to the parts that are easy to be found by visual inspection, also known as the outer panel of the engine hood, the top cover, the outer panel of the side wall, etc.; the quasi outer panel refers to the parts that are not easy to be found by sight, but can be seen after the relevant parts are opened up, such as the inner panel of the hood, the inner door panel and the inner panel of the trunk cover; the inner panel refers to the parts that are not paid attention to or can not be found by visual inspection, such as wheel cover, floor and various beams Etc.