日韩欧美三级片在线,久久99精品国产.久久久久,2020国产成人综合网,99国产精品久久久久久久久久久,中国免费高清在线观看_久久国产精品免费无码二区_日本一级黄片视频_日国产av自拍_妈妈用嘴巴帮我消火

Chromium free passivation solution for galvanized sheet,Passivation solution,Normal temperature passivating agent

Chromium free passivation solution for galvanized sheet,Passivation solution,Normal temperature passivating agent

First, the product code：Q / YS.502 (Yi Shun brand)

Second, product features:

1. Chromium-free elements and other harmful heavy metals, completely environmentally friendly solution.

2. This product can significantly improve the corrosion resistance of galvanized sheet, forming a dense white passivation film, after passivation of the aesthetics of the workpiece is very good, the effect is better than chromium passivation.

3. Small consumption, liquid stability.

4.Soution control is simple, easy to operate, you can use acid-base titration solution control.

Third, the use of:

Hot-dip galvanized sheet, galvanized sheet, galvanized sheet, galvanized sheet surface passivation.

Fourth, technical indicators:

1. PH value: 2-3

2. For dipping and spraying method.

3. Passivation time: 6 seconds to 8 seconds immersion, remove the workpiece to stay in the air for 3 seconds then wash.

4. Passivation solution temperature: room temperature

5. Add water 2 accompany use.

Fifth, the process:

Option one: apply to galvanized sheet production line galvanized → washing (with cold water) → passivation → drying

Option two: apply to galvanized parts.

Degreasing → washing → passivation → washing (with cold water) → drying

Note: If the surface of galvanized parts without oil, skim the process can be omitted.

Sixth,note: non-chromium, in line with the EU ROHS directive.

Other processing：Zinc surface treatment agent series、Zinc coating imitation gold agent、Chemical silver plating liquid (copper substrate)、Stainless steel chemical thicker liquid copper  plating