Pickling agent for stainless steel
A pickling agent, stainless steel technology, applied in the field of chemical pickling agent for removing iron oxide scale on stainless steel surface, can solve the problems of long time for pickling stainless steel iron oxide scale, poor surface quality, low pickling efficiency, etc., so as to shorten the pickling time Time, improved pickling efficiency and strong cleaning ability
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Embodiment 1
[0023] Example 1 The application of this pickling solution in the pickling of 904L medium and thick plates in large-scale production.
[0024] In the pickling tank with a length of 9.1m, a width of 2.65m and a depth of 3.2m, according to the mass percentage:
[0025] Sulfuric acid 28%; Nitric acid 5%; Hydrochloric acid 10%; Hexamethylenetetramine 0.15%;
[0026] Sodium lauryl sulfate 0.1%; ethyl octylphenol polyoxyethylene (10 ether) 0.08%; the rest is water.
[0027] The mass concentration of acid used is respectively:
[0028] Sulfuric acid 96.0%; Nitric acid 66.0%; Hydrochloric acid 37.0%
[0029] Prepared 62m 3 Pickling solution. Slowly heat the pickling solution to 65°C, then hoist the pickling basket containing the 904L medium plate (thickness 10mm) after heat treatment and shot peening into the pickling tank for 8 minutes, and after the pickling basket is lifted out, the surface of the steel plate is cleaned with high pressure Rinse well with water. The oxide ski...
Embodiment 2
[0030] Example 2 The application of this pickling solution in the pickling of 2205 duplex stainless steel in large-scale production
[0031] In the pickling tank with a length of 9.1m, a width of 2.65m and a depth of 3.2m, according to the mass percentage:
[0032] Sulfuric acid 30%; Nitric acid 5%; Hydrochloric acid 12%; Hexamethylenetetramine 0.2%;
[0033] Sodium lauryl sulfate 0.1%; Ethyl octylphenol polyoxyethylene (10 ether) 0.1%; The rest is water.
[0034] The mass concentration of acid used is respectively:
[0035] Sulfuric acid 96.0%; Nitric acid 66.0%; Hydrochloric acid 37.0%
[0036] Prepared 60m 3 Pickling solution. Slowly heat the pickling solution to 80°C, then hang the pickling basket containing the 2205 duplex stainless steel plate (thickness 8mm) after heat treatment and shot peening into the pickling tank for 12 minutes, lift out the pickling basket and put the steel plate Surfaces are rinsed clean with high pressure water. The oxide skin on the surf...
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