CENTRALISER OF ROLLING ROD OF TUBE-ROLLING MILL Russian patent published in 2009 - IPC B21B25/02 

FIELD: metallurgy.

SUBSTANCE: facility is located on exit side of mill behind working rolls and includes body with located in it adjusted movable support, bearing rolling rod and centering is free end with fixed on it mandrel by axis of roll pass. Movable support is implemented with ability of providing unhampered passing of rolled tube and corresponds vertical merely supported L-shaped lever. Top part of L-shaped lever is in contact with rolling rod and is implemented in the form of U-shaped shaped location plate. L-shaped lever is implemented with ability of lifting of free end of rolling rod for value, compensating its flexure, by return effort, imposed to bottom part of L-shaped lever. Return effort value is defined by means of balance mass of rolling rod and correlation of lever arms.

EFFECT: providing of coaxiality of rolling rod free end axis and rolling axis, provides improving of internal surface of tubes, decreasing of transversal nonuniform pipe wall thickness, increasing of functionality resort of working rolls and reduction of mill delay time for rollers change .

2 dwg