СПОСОБ ПРОКАТКИ КОЛЕЦ

摘要

FIELD: plastic metal working, namely in ring rolling mills. ^ SUBSTANCE: process comprises steps of reducing ring in radial direction by means of outer and inner rolls. Outer drive roll rotates at predetermined revolution number; inner roll moves in radial direction to outer roll providing increase of outer diameter. Ring is reduced in axial direction between edge rolls. Servo roller continuously measures current outer diameter of ring; backup rolls supporting ring are drawn apart to circle equal to current outer diameter of ring. At rolling process current value of out-of-roundness of rolled ring is detected. On base of said value preset outer diameter of rolled ring is calculated (at concrete time moment). Values of said diameter coincide or almost coincide with respective parameters of rolled ring having no out-of-roundness in order to draw apart backup rolls according to preset outer diameter of rolled ring. ^ EFFECT: lowered time period of rolling ring due to combination of processes of rolling ring and correcting it. ^ 3 dwg