Control method for temperature of thermal treatment heating furnace

Abstract

The invention relates to a control method for the temperature of a thermal treatment. By adoption of the control method, the technical problem that the measured temperature deviates from the temperature of a working interval of the heating furnace is solved and the rejection rate of heat treatment is reduced. The control method is characterized in that when the ambient temperature is changed, before the heat treatment is carried out on a workpiece to be treated, a measurement and control instrument (2) in the original measurement and control system is corrected, and then temperature control on the thermal treatment heating furnace is carried out and specifically comprises the following correction steps of 1) adding a monitoring system on the original measurement and control system; and 2) carrying out a measurement and control temperature correction method, namely, ensuring that the heating furnace is in an insulating stage under the process set temperature, reading a temperature value of the monitoring instrument (1) and a temperature value of the measurement and control instrument (2) of the original system, carrying out correction in an 'error correction' menu item of the measurement and control instrument (2), and adding 'positive correction amount' into an 'error correction' menu item to ensure that the indicated value of the measurement and control instrument (2) and the indicated value of the monitoring instrument (1) are consistent.

Description

Technical field [0001] The invention belongs to the technical field of temperature control, and specifically relates to a method for controlling the temperature of a heat treatment furnace. Background technique [0002] With the continuous development of science, traditional heat treatment processes can no longer meet the needs of development. In order to improve the level of heat treatment processes, static passive temperature control systems can no longer solve practical problems. It is necessary to find new methods to meet the temperature requirements of heat treatment processes. The higher the demand comes. [0003] The heat treatment process has certain requirements for the temperature deviation in the heating furnace. For example, when tempering aluminum parts, the temperature deviation of the tempering furnace is required to be less than ±5℃, that is, for the heating furnace, any point in the effective heating interval must be guaranteed ( During the heat preservation perio...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for controlling the temperature of a heat treatment heating furnace, which solves the technical problem that the measured temperature deviates from the temperature in the working area of ​​the heating furnace, reduces the technical problem that the temperature in the working area of ​​the heating furnace deviates from the temperature required by the process, and reduces the uniformity of the temperature field in the working environment. The impact of temperature and volatility on the temperature in the working area reduces the scrap rate of heat treatment

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