Roll Pilger mills for thin-walled tubes of cold resistant and corrosion-resistant steel grades with high accuracy on the wall

摘要

1. A roller mill for pilger rolling of thin-walled pipes from cold-resistant and corrosion-resistant steels with high accuracy on a wall comprising circumferentially barrels stream of circular cross section having tangential outlets, the length of which is composed of sequentially arranged the striker with an angle Θ = 100 °, formed by a radius crown roll, increasing the magnitude and decreasing smoothly transverse tangential outlets from 33 ° to values ​​issues a transition section for polishing (20-22) °, the polishing portion with an angle Θ = 70 °, to the section torogo continuously or smoothly increases by the amount Δ = 0,3-0,4 mm, whose value depends on the method of manufacturing caliber rolls and wear of the cutting tool with transverse tangential outlets equal to (20-22) °, longitudinal discharge angle Θ = 40 ° with a continuously increasing from tangential outlets (20-22) ° to 33 ° and increasing the caliber diameter of 12.2 mm, the idle section with an angle Θ = 150 ° with constant transverse tangential outlets 33 °, characterized in that the cross angle on release striker from "0" to the start point of polishing performed f avno decreasing from 35 ° to the (20-22) °, angle to the polishing portion is made constant cross Product (20-22) °, and carbon longitudinal cross vshuska release angle formed smoothly increasing with (20-22) ° to 35 °. 2. The roller according to claim 1, characterized in that the angle formed central longitudinal release angle of Θ = 50 ° .3. The roller according to claim 1, characterized in that the radii of the longitudinal discharge angle gauge 10 ° formed increasing, the values ​​of which are determined from vyrazheniyR = R + Δ, R = R + Δ, = R + Δ + Δ, R = R + Δ = R + Δ + Δ + Δ, R = R + Δ = R + Δ + Δ + Δ + Δ, R = R + Δ = R + Δ + Δ + Δ + Δ + Δ, where R, R, R, R , R- radius of the roll caliber