1、何种条件发生变化？
1, what conditions have changed?
2、变化到何种程度？
2, to what extent?
3、为什么会产生这样的变化？
3, why is there such a change?
为弄清楚这些问题，一般按照以下步骤进行：
To clarify these problems, the following steps are normally carried out:
1、分别检查涂料编号、批号和稀释剂是否正确，涂料粘度是否在工艺范围内，并逐一校对，监测。
1. Check whether the paint number, batch number and diluent are correct, whether the viscosity of the paint is within the scope of the process, and check one by one, monitoring.
2、检查原材料铝卷在进行过程中是否存在污染。
2, check whether there is pollution in the process of raw aluminum coil.
3、检查涂装辊研磨是否存在缺陷。
3, check whether there are defects in the painting roller.
4、检查涂装辊、上料辊、提漆辊、计量辊转速匹配和生产线速是否在工艺范围内。
4. Check the speed matching of coating roll, feeding roll, stripping roll, measuring roll and production line speed in the process range.

5、检查设备，气压是否正常。
5, check the equipment, air pressure is normal.
6、检查操作人员操作是否正确。
6, check whether the operator is correct.
7、检查环境湿度，温度是否改变。
7, check the environment humidity, whether the temperature changes.
8、检查供漆泵是否漏气、漏油。
8. Check whether the paint pump is leaking or leaking.
9、检查滤网是否完好。
9, check whether the screen is intact.
10、检查上料辊$涂装辊夹紧程度。
10. Check the feeding roller and the clamping degree of the coating roller.
11、检查涂料盘隔离档板是否正确。
11. Check whether the isolation tray is correct.
12、检查刮刀是否紧贴刮干净。
12, check whether the scraper is clinging to clean.
13、检查张力是否正常。
13, check whether the tension is normal.
14、由于涂装生产工艺流程较长，所以处理方法必须从发现缺陷处开始向上一个工序方向逐一按上述方法进行检查，直至找到造成缺陷问题所在，然后作对应处理。
14. Because of the long process flow of painting production, the treatment method must be checked one by one from the point of defect detection to the direction of the next process until the defect is found, and then the corresponding treatment is carried out.