There are many colors of copper doors, including white copper, brass, bronze and so on. According to the current science and technology, most choose to dye it with chemical reagents. So let's learn how to make the color of copper doors?

1.处理工艺，去除锈蚀和氧化层，本系列将通过水洗、烘干等方法进行处理。

1. Treatment process to remove rust and oxide layer. This series will be treated by water washing, drying and other methods.

2.酸洗抛光。此时，应使用铜酸洗抛光液。之所以使用它，是因为它能使黄铜表面有光泽感。

2. Pickling and polishing. At this time, copper pickling polishing solution shall be used. The reason why it is used is that it can make the brass surface shiny.

3.浸泡，将工件浸泡在本产品中，两分钟后，表面会变黑发蓝。继续浸泡25分钟后，表面变色质量达更高的水平，此时可获得较好的防锈性能。

3. Soaking: soak the workpiece in this product. After two minutes, the surface will turn black and blue. After soaking for 25 minutes, the surface discoloration quality reaches a higher level, and a better antirust performance can be obtained at this time.

4.用砂纸磨擦，使黄铜表面光滑，不刮花。

4. Rub with sandpaper to make the brass surface smooth without scratching.

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