汽车零部件的清洁度测试The cleaning test of the auto parts
汽车零部件清洁度规范和标准的建立，涉及到五个步骤和问题：零件的尺寸，污染物性质，清洁准备，清洁过程和清洁度检测验证。
5 steps or questions are involved in this specification: parts dimensions, Nature of the pollutants, cleaning preparation, cleaning process and cleaning verify
一、零件的尺寸parts dimensions
零件的尺寸被看做是设计一个高效的清洗过程的基础。这要求客户与清洗设备制造商保持紧密互通，以了解零部件的精确尺寸，公差和材料组成。材料尤其不能被忽略，因为在清洗过程中，化学品会产生腐蚀，物理清洗会导致热膨胀而改变零部件的尺寸。
Parts dimension is the primary of designing a efficient cleaning process.this requires the customer keep good communication with the manufacturer of the cleaning equipment to understand the affection of the dimension, tolerance and material to the cleaning. Should not ignore the raw material as the material may be corroded by the chemical, and the temperature will also change the parts dimension in the cleaning process.