Stainless steel rail pickling and passivation treatment method
A treatment method, pickling and passivation technology, applied in the coating process of metal materials, etc., can solve the problems of general corrosion resistance of stainless steel, harsh operating conditions, environmental pollution, etc., to achieve improved corrosion resistance, beautiful surface, and easy operation safe effect
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[0025] Example one
[0026] A pickling passivation treatment method for stainless steel rails, which is characterized in that it comprises the following steps:
[0027] (1) Pickling
[0028] Completely immerse the cleaned and greased stainless steel rail workpieces in pickling solution for 120 minutes, especially suitable for SUS316;
[0029] Among them: the pickling solution is composed of the following components in parts by weight: 5 parts of nitric acid, 2.5 parts of sodium fluoride, 0.6 parts of hydrochloric acid, 0.3 parts of ammonium citrate, 0.3 parts of thioglycolic acid, 0.2 parts of 2-mercaptobenzothiazole, 0.6 parts of hydrogen peroxide, 0.5 parts of potassium permanganate and 60 parts of water;
[0030] (2) Ultrasonic cleaning
[0031] Put the stainless steel rail workpiece after pickling treatment into the cleaning basket, and then put it into the ultrasonic cleaning machine filled with cleaning liquid for 18 minutes;
[0032] Among them, the cleaning liquid is composed of ...
Example Embodiment
[0042] Example two
[0043] A pickling passivation treatment method for stainless steel rails, which is characterized in that it comprises the following steps:
[0044] (1) Pickling
[0045] Immerse the cleaned and greased stainless steel rail workpieces in the pickling solution for 30 minutes, especially suitable for SUS304.
[0046] Among them: the pickling solution is composed of the following components in parts by weight: 6 parts of nitric acid, 1.5 parts of sodium fluoride, 0.5 parts of hydrochloric acid, 0.4 parts of ammonium citrate, 0.6 parts of thioglycolic acid, 0.2 parts of 2-mercaptobenzothiazole, 0.5 parts of hydrogen peroxide, 0.7 parts of potassium permanganate and 55 parts of water;
[0047] (2) Ultrasonic cleaning
[0048] Put the pickled stainless steel rail workpiece into the cleaning basket, then put it into the ultrasonic cleaning machine filled with cleaning liquid, and clean for 15 minutes;
[0049] Among them, the cleaning liquid is composed of the following comp...
Example Embodiment
[0059] Example three
[0060] A pickling passivation treatment method for stainless steel rails, which is characterized in that it comprises the following steps:
[0061] (1) Pickling
[0062] Completely immerse the cleaned and greased stainless steel rail workpieces in the pickling solution for 90 minutes;
[0063] Among them: the pickling solution is composed of the following components in parts by weight: 8 parts of nitric acid, 2 parts of sodium fluoride, 0.8 parts of hydrochloric acid, 0.5 parts of ammonium citrate, 0.5 parts of thioglycolic acid, 0.3 parts of 2-mercaptobenzothiazole, 0.5 parts of hydrogen peroxide, 0.8 parts of potassium permanganate and 50 parts of water;
[0064] (2) Ultrasonic cleaning
[0065] Put the pickled stainless steel rail workpiece into the cleaning basket, then put it into the ultrasonic cleaning machine filled with cleaning liquid, and clean for 20 minutes;
[0066] Among them, the cleaning solution is composed of the following components in weight pe...
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