Experiment electric furnace with accurate temperature control

Abstract

The invention discloses an experiment electric furnace with accurate temperature control, which comprises a furnace body, a furnace pot, a voltage adjusting device, an external heating system and a workshop heating system, wherein the furnace pot is arranged in the furnace body, the external heating system is positioned on the outer side of the furnace pot, the workshop heating system is positioned in the furnace pot, the voltage adjusting device is used for setting and adjusting heating power of the external heating system according to the temperature of the workshop heating system, and the temperature of the external heating system is set to be lower than the set temperature of the workshop heating system. In a condition that a bath furnace has to be used for carrying out isothermal heating, cooling or heat preservation on experimental materials, the temperature fluctuation of a heating device can be reduced to the greatest extent in the process of heat preservation, the accurate control of the heating temperature and residence time in a heat field of a sample can be realized, and simultaneously an oxidation phenomenon possibly existing in the heating process of the sample can be effectively avoided.

Description

technical field [0001] The invention relates to a bath furnace device with precise temperature control. When the device reaches a steady state at a set working temperature, the temperature fluctuation range of its working chamber is ≤1°C. The product formed by the present invention can be used in experimental researches requiring precise control of heating temperature, heating time, and heating, isothermal cooling, isothermal annealing and aging treatment of metal materials under non-oxidative heating conditions. Background technique [0002] In the experimental research on the structure and performance of metal materials, it is often necessary to ensure the non-oxidative heating of the sample, and to precisely control the heating time and heating temperature. For this reason, the working chamber of the experimental electric furnace is required to be in an open state, so as to facilitate the rapid insertion and removal of the sample, and ensure that the residence time of the...

AI Technical Summary

Problems solved by technology

However, when the studio is in an open state, the heat dissipation from the furnace mouth is relatively large. If the traditional external heating is still used, the temperature fluctuation range of the studio is large, and it is difficult to meet the requirements of some experiments for precise control of the heating temperature.

Although the existing vacuum heating device and atmosphere protection heating device can meet the requirements of high temperature control accuracy, the sample can only be heated with the furnace temperature rising, and only when the furnace temperature drops to a certain temperature, the sample can be heated from In the control of heating time, it cannot strictly meet the experimental requirements of isothermal annealing, isothermal tempering, isothermal cooling, aging treatment, etc., because the temperature in the heating and cooling process changes continuously, and it is difficult to control the temperature of the process. The heating time is converted into the isothermal heating time or holding time required by the experiment

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