Differential temperature and isothermal roll heating device and rolling method

Abstract

The invention relates to a differential-temperature and constant-temperature roller heating device and a rolling method. The roller heating device comprises a heating rod and an insulation pipe, wherein the insulation pipe is wrapped around the exterior of the heating rod; a front section of the heating rod is a heating section; a rear section of the heating rod is a normal-temperature section; the heating section is arranged in a roller body of a hollow roller; the normal-temperature section stretches out of a roller neck of the roller and is connected to a connection device; the connection device comprises a fixed ring, a rotary cylinder and a movable ring; the fixed ring is rotatably connected to the movable ring through the rotary cylinder; the movable ring is fixedly connected to the normal-temperature section of the heating device; a cooling device comprises a circulation water pump and a water pipe; the circulation water pump is connected to a roller bearing seat and a water tank formed in the interior of the fixed ring through the external water pipe. The differential-temperature and constant-temperature roller heating device is applied to a heating system of rollers made of difficultly-formed metal materials and needed to be rolled at differential temperature; the surface temperature of a pair of rollers can be accurately controlled in the rolling process; the requirements of parameters of a constant-temperature or differential-temperature rolling process; meanwhile, the heater is convenient to replace; the energy is saved.

Description

technical field [0001] The invention relates to a rolling heating device for metal plates and strips, in particular to an on-line continuous heating method and device for rolls. During the rolling process, the rolls are continuously heated on-line isothermally or differentially, and are suitable for hard-to-deform metal materials. Rolling production. Background technique [0002] In view of the problems of large deformation resistance and poor plasticity of some metal sheets and strips during cold rolling, the traditional warm rolling or hot rolling process is currently used; the traditional warm rolling or hot rolling process is to heat the metal sheet and strip first , and then rolling on a hot rolling mill or a cold rolling mill. However, since the traditional warm rolling or hot rolling process adopts the method of directly heating the plate and strip, and the thickness of the plate and strip is generally thin and the heat capacity is small, the heat dissipation speed o...

AI Technical Summary

Problems solved by technology

It does not propose a specific temperature range protection range for differential temperature rolling

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