Chrome-free metal deactivator

[0034] A chromium-free metal passivator, comprising the following components, and the weight percentage of each component is:

[0035]

[0036] Add water to 100%.

[0037] Preparation method: Mix all ingredients evenly and dissolve together.

[0039] A chromium-free metal passivator, comprising the following components and the weight percentage of each component is:

[0040]

[0041] The balance is water.

[0042] The preparation method is the same as in Example 1.

[0044] A chromium-free metal passivator, comprising the following components and the weight percentage of each component is:

[0045]

[0046] The balance is water.

[0047] The preparation method is the same as in Example 1.

[0048] Salt spray test judgment standard: national standard GB6461, GB12335

[0049] Implementation experimental status rating factor Example 1 discoloration and light loss Grade C Example 2 no change Grade A Example 3 slight discoloration Class B

[0050] How to use: The preparation ratio is 1:5--1:10, that is, 1 part of chromium-free passivator is diluted with 5 parts to 10 parts of deionized water. Do not use tap water, let alone well water

[0051] Note: The surface temperature of galvanized sheet and other galvanized materials should be controlled below 45°C. When the temperature exceeds 50°C, the passivator may be decomposed and the corrosion resistance will be damaged. The passivation layer has c...