In-furnace time control method for thick steel plate heat treatment

Abstract

The invention relates to an in-furnace time control method for thick steel plate heat treatment. According to the control method, a modeling computer is used for tracking a model through the given temperature, a quenching furnace is operated at the highest feasible temperature, and the shortest in-furnace time of steel plates is estimated and computed; and before the steel plate heat preservation temperature is reached, the steel plate heat preservation time is computed through an estimating method, a quenching machine is started in advance so that the delay time of steel plate tapping can be shortened, and the steel plates are discharged out of the furnace in the shortest time on the premise that the requirements for the heat preservation temperature and the heat preservation time are met. The problems that in the traditional thick steel plate heat treatment process, steel plate tapping is delayed and the heat treatment efficiency is low are solved.

Description

technical field [0001] The invention relates to the field of metal heat treatment model control, in particular to a furnace time control method for heat treatment of thick steel plates. Background technique [0002] Quenching furnace is the core equipment of heat treatment, which is used for heating steel plate, so that the steel plate is in a uniform austenite state, and provides the necessary initial conditions for quenching. It can be seen that the quenching furnace is the core link to ensure product quality in the heat treatment process, and at the same time, it is also a major energy-consuming and polluting household. Research on how to reduce energy consumption and improve heat treatment efficiency on the premise of ensuring heating quality is a development direction that the heat treatment industry is very concerned about. Among them, it is particularly important to make full use of computer models and control technology to improve the efficiency of heat treatment wi...

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Problems solved by technology

[0007] The object of the present invention is to provide a kind of furnace time control method for the heat treatment of thick steel plate, described control method adopts the maximum feasible temperature to the quenching furnace according to the temperature tracking model of the steel plate, calculates the minimum furnace time of the steel plate, and Before the holding time of the steel plate is reached, the quenching machine is started in advance by means of prediction, so as to reduce the lag time of steel plate tapping, so that the steel plate can be released as soon as possible under the premise of meeting the holding temperature and holding time, so as to solve the problem of traditional thick steel plate heat treatment. The process lags behind when the steel plate is tapped, and the heat treatment efficiency is low

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