Hydrochloric acid washing corrosion and fog inhibition accelerator for hot-rolled plate
An accelerator and hot-rolled sheet technology, which is applied in the field of hot-rolled sheet hydrochloric acid pickling corrosion inhibition and anti-fog accelerators, can solve the problems of no anti-fog function, high hydrogen permeation effect, and low efficiency, and achieve excellent corrosion and anti-fogging. Fog performance, lower pickling temperature, good effect of promoting performance
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Embodiment 1
[0015] Take 5% sodium benzoate, 10% dodecylphenol polyoxyethylene ether, 10% hexamethylenetetramine, and 75% stannous chloride by weight, and mix these raw materials evenly to obtain hot-rolled sheet hydrochloric acid. Washing anti-corrosion anti-fog accelerator.
[0016] Add the accelerator of this embodiment in the pickling solution, the concentration of hydrochloric acid in the pickling working solution is 10 ~ 20%, and control the percentage by weight of this accelerator in the pickling working solution to maintain at 1.5%, when the pickling temperature is 60 At ℃, it can significantly promote the removal of iron oxide scale and improve the pickling quality of the board surface, the corrosion inhibition efficiency can reach more than 90%, and the fog suppression efficiency can reach more than 80%.
Embodiment 2
[0018] Take 10% sodium benzoate, 5% dodecylphenol polyoxyethylene ether, 15% hexamethylenetetramine, and 70% stannous sulfate by weight percentage. After these raw materials are evenly mixed, hot-rolled sheet hydrochloric acid is obtained. Washing anti-corrosion anti-fog accelerator.
[0019] Add the accelerator of this embodiment in the pickling solution, the concentration of hydrochloric acid in the pickling working solution is 10 ~ 20%, and control the pickling working solution to contain the accelerator weight percentage at 1.5%, and the pickling temperature is 70 At ℃, it can significantly promote the removal of iron oxide scale and improve the pickling quality of the board surface, the corrosion inhibition efficiency can reach more than 95%, and the fog suppression efficiency can reach more than 85%.
Embodiment 3
[0021] Take 10% of sodium benzoate, 8% of dodecylphenol polyoxyethylene ether, 12% of hexamethylenetetramine, and 70% of stannous chloride by weight, and mix these raw materials evenly to obtain hot-rolled sheet hydrochloric acid. Washing anti-corrosion anti-fog accelerator.
[0022] Add the accelerator of this embodiment in the pickling solution, the concentration of hydrochloric acid in the pickling working solution is 10 ~ 20%, and the weight percentage of the accelerator contained in the pickling working solution is controlled to maintain 1.0%. When the pickling temperature is 70 At ℃, it can significantly promote the removal of iron oxide scale and improve the pickling quality of the board surface, the corrosion inhibition efficiency can reach more than 95%, and the fog suppression efficiency can reach more than 85%.
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