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Titanium and titanium alloy appearance disposal methods
Source: China Bearing Network Time: 2014-03-11
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Common solvent for degreasing: trichloroethylene, acetone, methyl ethyl ketone, benzene, ethyl acetate, gasoline, absolute ethanol.
[Measure 2]
After degreasing, immerse in the following solution at 20 ° C for 5-10 min:
Sodium fluoride 2 chromium oxide 1 sulfuric acid (d=1.84) 10 water 50
Washed with water; washed with distilled water; sterilized at 93 ° C.
[Measure 3]
Dispose in the following solution at 20 ° C for 2 min:
Hydrofluoric acid (concentrated) 84 Hydrochloric acid (37%) 8. 9 Phosphoric acid (85%) 4. 3
Washed with water; washed with distilled water; sterilized at 93 ° C.
[Measure 4]
After degreasing; wash with an alkaline aqueous solution; then dispose for 4-6 min at room temperature in the following solution:
Nitric acid (70%) 5 ammonium fluoride 3 water 92
Washed with water; treated at room temperature for 2 min in the following solution:
Trisodium phosphate 5 sodium fluoride 1 hydrofluoric acid 1. 5 water 92. 5
After washing, it is boring.
[Measure 5]
After degreasing, wipe with the following solution for 2-3 min:
Trisodium phosphate 5 sodium fluoride 1. 3 hydrofluoric acid 2. 9 water 90. 8
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