Acid pickling technology for welding wire steel surface pretreatment
A surface pretreatment and pickling technology, applied in the field of steel surface treatment, can solve the problems of personal injury, environmental impact, slow reaction between sulfuric acid and oxide scale components, etc., and achieve the effect of protecting the environment and preventing pollution
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[0014] Example 1:
[0015] A pickling process for surface pretreatment of welding wire steel, the pickling solution used in the pickling process is composed of sulfuric acid, hydrochloric acid, fatty alcohol polyoxyethylene ether, thiourea and water, and the mass ratio of the above substances is: sulfuric acid 10% , 8% hydrochloric acid, 0.65% fatty alcohol polyoxyethylene ether, 1.2% thiourea, and the balance is water,
[0016] Described pickling process comprises the following steps:
[0017] a. Immerse all the welding wire steel in water with a temperature of 55 degrees for 8 minutes;
[0018] b. Configure the above pickling solution, and inject the configured pickling solution into the pickling tank;
[0019] c. Place the welding wire steel immersed in clean water in a pickling tank for pickling, the pickling temperature is 35 degrees, and the pickling time is 30 minutes;
[0020] d. The pickled wire steel is washed with water and then coated with boric acid to prevent ...
Example Embodiment
[0021] Example 2:
[0022] A pickling process for surface pretreatment of welding wire steel, the pickling solution used in the pickling process is composed of sulfuric acid, hydrochloric acid, fatty alcohol polyoxyethylene ether, thiourea and water, and the mass ratio of the above substances is: sulfuric acid 12% , 7% hydrochloric acid, 0.85% fatty alcohol polyoxyethylene ether, 1.6% thiourea, and the balance is water.
[0023] Described pickling process comprises the following steps:
[0024] a. Immerse all the welding wire steel in water with a temperature of 60 degrees for 5 minutes;
[0025] b. Configure the above pickling solution, and inject the configured pickling solution into the pickling tank;
[0026] c. Place the welding wire steel immersed in clean water in a pickling tank for pickling, the pickling temperature is 25 degrees, and the pickling time is 35 minutes;
[0027] d. The pickled wire steel is washed with water and then coated with boric acid to prevent ...
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