METHOD OF PREPARING STRIPS FOR WELDING AT CONTINUOUS METALLURGICAL UNITS Russian patent published in 2011 - IPC B23K37/47 B23K101/16 

FIELD: process engineering.

SUBSTANCE: invention may be used in strip welding at specialised machines incorporated with high-efficiency continuous metallurgical units, for example, tube welding and profile-iron bending stands, and pickling lines After lining-up, compressing by rear rolls and cutting front end of previous strip, next strip is fed to front rolls with equidistant convex-concave surfaces to be stopped and for its front end to extend beyond the rolls. Strip is clamped bent in rolls owing to its elastic strain and transferred to shears to it to be released. Then, it is clamped again at front rolls. Centering device is opened to cut strip end by welding machine shears. Top front roll is lifted to feed machine with shears into welding zone. Now, ends are clamped by welding shears to lift clamping front rolls and rear top rolls.

EFFECT: simplified servicing, safe operation.

2 cl, 2 dwg