A method for pre-treating aluminum materials prior to painting

Details A method for pre-treating aluminum materials prior to painting A method for pre-treating aluminum materials prior to painting

C - Chemistry, Metallurgy

23

C

C23C 22/12 (2006.01) C23C 22/36 (2006.01) C23C 22/73 (2006.01) C23C 22/83 (2006.01)

Patent

CA 2188420

To improve the water resisting secondary adhesion of paint films to zinc phosphate conversion coatings on aluminum, the initially formed conversion coating is treated by spraying with a second liquid treatment composition that either is itself a liquid composition capable of forming a zinc phosphate conversion coating on aluminum or is made by diluting such a conversion coating forming composition.

Pour améliorer l'adhérence secondaire résistante à l'eau de couches de peinture à des couches de conversion de phosphate de zinc disposées sur de l'aluminium, la couche de conversion initialement formée est traitée par aspersion avec une deuxième composition de traitement liquide qui est elle-même une composition liquide capable de former une couche de conversion de phosphate de zinc sur de l'aluminium ou bien qui est obtenue par dilution d'une telle composition formant une couche de conversion.

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