Room-temperature passivation liquid for cast iron cylinder
A passivation liquid and cylinder technology, applied in the direction of metal material coating process, can solve the problem of not meeting the passivation requirements of cast iron cylinder film, and achieve the effect of eliminating heating equipment, meeting passivation requirements and saving energy.
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Embodiment 1
[0013] A room temperature passivation solution for cast iron cylinders, the passivation solution consists of the following components by weight percentage: phytic acid 13%, selenite 4%, ferrous sulfate 0.5%, sodium benzoate 3%; triethanolamine 14% , industrial sodium carbonate 2.5%, bromic acid 0.5%, benzotriazole 0.4%, industrial alcohol 2.5%, isothiimidazolone 0.6%, tap water balance.
Embodiment 2
[0015] A room temperature passivation solution for cast iron cylinders, the passivation solution consists of the following components in weight percentage: phytic acid 15%, selenite 3%, ferrous sulfate 1.5%, sodium benzoate 2%; triethanolamine 16% , industrial sodium carbonate 1.5%, bromic acid 0.8%, benzotriazole 0.2%, industrial alcohol 3.5%, isothiimidazolone 0.4%, tap water balance.
Embodiment 3
[0017] A room temperature passivation solution for cast iron cylinders, the passivation solution consists of the following components in weight percentage: phytic acid 14%, selenite 3.5%, ferrous sulfate 1.0%, sodium benzoate 2.5%; triethanolamine 15% , industrial sodium carbonate 2.0%, bromic acid 0.65%, benzotriazole 0.3%, industrial alcohol 3.0%, isothiimidazolone 0.5%, tap water balance.
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