Method of treating a metal element for an automobile
AssigneeZ.A.T. Zinc Anticorosion Technologies SA
InventorLeonid Levinski
Life of this patent
Estimating the term…
Abstract
A method for treating a metal element for an automobile includes hardening the metal element so as to obtain a press hardened metal element. Scale from the press hardened metal element are removed by placing the press hardened metal element in an ultrasonic liquid and preforming an ultrasonic process thereon so as to obtain a de-scaled press hardened metal element. The ultrasonic liquid is an aqueous solution comprising an organic carboxylic acid in a concentration of from 0.1 to 10 vol.-%. The de-scaled press hardened metal element is coated in a coating process with an anti-corrosion coating.
Claims17
A method for treating a metal element for an automobile, the method comprising:
- hardening the metal element so as to obtain a press hardened metal element;
- removing scale from the press hardened metal element by placing the press hardened metal element in an ultrasonic liquid and preforming an ultrasonic process thereon so as to obtain a de-scaled press hardened metal element, wherein the ultrasonic liquid is an aqueous solution comprising an organic carboxylic acid in a concentration of from 0.1 to 10 vol.-%;
- and
- coating the de-scaled press hardened metal element in a coating process with an anti-corrosion coating.
The method as recited in claim 14, wherein the press hardened metal element is rotated by a rotor in the ultrasonic liquid during the ultrasonic process.
Dependencies are inferred from the claim text.