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Continentale Parker SA
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Continentale Parker SA
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Publication of ES268441A1publicationCriticalpatent/ES268441A1/en
Process for the phosphating of iron and steel in phosphate baths based on zinc phosphate and containing oxidizing agents, in which the metal parts are brought into contact, prior to phosphating, with aqueous solutions containing a compound of the titanium and one or more condensed alkali metal phosphates, characterized in that the treatment is carried out with the aid of solutions containing 0.1 to 100 mg/l, preferably 0.5 to 20 mg/l, of titanium in the form of orthophosphate of titanium of activating action, and condensed phosphate, preferably in concentrations of 0.1 to 10 g/1 expressed in the form of the corresponding salt or sodium salts, and whose pH is comprised between 5 and 13, preferably between 6 and 12 phosphating is carried out at a temperature lower than 70º C, in such a way that most of the iron dissolved in the bivalent iron state remains in the solution or passes to the phosphate layer. (Machine-translation by Google Translate, not legally binding)
ES0268441A1960-12-021961-06-21Procedure for the fosfatation of iron and steel (Machine-translation by Google Translate, not legally binding)
ExpiredES268441A1
(en)