Microcrystalline phosphating solution for brake block hardware
A technology of phosphating treatment and hardware, applied in the field of phosphating treatment liquid, to achieve the effects of uniform color, light environmental pollution and fast phosphating speed
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Embodiment 1
[0020] Embodiment 1: in the phosphating tank, pour 300 parts of (every part of 1Kg, hereinafter the same) water, then 30 parts of Mazhifu salts are added in the tank, under constant stirring state, add 30 parts of zinc dihydrogen phosphate, After the two are fully dissolved, pour 300 parts of water to dilute; pour 45 parts of zinc nitrate into the phosphating tank, stir and dissolve, heat the solution to 70°C, add 2 parts of citric acid, 3 parts of tartaric acid, 3 parts of 2 parts of sulfosalicylic acid, fully stirred, and mixed; then 2 parts of sodium tripolyphosphate and 2 parts of m-nitrobenzene sodium sulfonate were added to the phosphating tank in turn, after stirring and dissolving, pour 400 parts of water, slowly Slowly add 1.5 parts of guanidine nitrate, stir well, and after mixing evenly, the microcrystalline phosphating treatment liquid for the brake pad hardware can be obtained.
Embodiment 2
[0021] Embodiment 2: in the phosphating tank, pour 360 parts of (every part of 1Kg, hereinafter the same) water, then 40 parts of Mazhifu salts are added in the tank, under constant stirring state, add 22 parts of zinc dihydrogen phosphate, After the two are fully dissolved, pour 360 parts of water to dilute; pour 50 parts of zinc nitrate into the phosphating tank, stir and dissolve, heat the solution to 75°C, add 1.5 parts of citric acid, 2 parts of tartaric acid, 2 1 part of sulfosalicylic acid, fully stirred, and mixed; then 1 part of sodium tripolyphosphate and 1.5 parts of sodium m-nitrobenzene sulfonate were added to the phosphating tank in sequence, after stirring and dissolving, pour 480 parts of water, slowly Slowly add 2 parts of guanidine nitrate, stir well, and after mixing evenly, the microcrystalline phosphating treatment liquid for the brake pad hardware can be obtained.
Embodiment 3
[0022] Embodiment 3: in the phosphating tank, pour 330 parts of (every part of 1Kg, hereinafter the same) water, then 35 parts of Mazhifu salts are added in the tank, under constant stirring state, add 26 parts of zinc dihydrogen phosphate, After the two are fully dissolved, pour 330 parts of water to dilute; pour 40 parts of zinc nitrate into the phosphating tank, stir and dissolve, heat the solution to 65°C, add 2.5 parts of citric acid, 4 parts of tartaric acid, 2.5 parts of 1 part of sulfosalicylic acid, fully stirred and mixed; then 1.5 parts of sodium tripolyphosphate and 1.8 parts of sodium m-nitrobenzene sulfonate were added to the phosphating tank in turn, after stirring and dissolving, pour 440 parts of water, slowly Slowly add 1.8 parts of guanidine nitrate, stir well, and after mixing evenly, the microcrystalline phosphating treatment liquid for the brake pad hardware can be obtained.
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