MANUFACTURE OF ROLL FORMED AND COATED ARTICLES

摘要

A method for roll forming of articles from hot rolled steel strip is provided. This method includes the step of forming a hot rolled steel strip to fracture and/or loosen a layer of mill scale adhered thereto. The steel strip is then shaped in a shaping region of a roll forming mill to a pre-determined shape in the presence of a roll forming lubricant. The pre-determined shape is then sized in a sizing region of the roll forming mill in the presence of a detergent to remove particles of mill scale and residual roll forming lubricant adhering to the pre-determined shape. The detergent acts as a lubricant for sizing rolls in the sizing region.