Discussion on door lock of high temperature furnace in material science laboratorysignificance

Abstract: High temperature furnace is one of the important tools in material science research. It is necessary to ensure the safety and stability of high temperature furnace during various experiments. As an important link to ensure safety, the design of door lock of high temperature furnace has a direct impact on the normal operation of the whole experimental process.

I. Introduction

With the progress of science and technology and the research demand of new materials, high temperature furnace plays an increasingly important role in scientific research. Because the high-temperature furnace usually heats the sample to more than several thousand degrees Celsius and performs various treatments (such as sintering, smelting, etc.) in extreme environment, it must be equipped with a reliable door lock device to ensure the personal safety of the experimenter and the equipment itself is not damaged. This paper will discuss the design principle and application requirements of high temperature furnace door lock from the following aspects.

Second, the structural characteristics of the door lock analysis

1. Selection of heat-resistant materials: The main function of high-temperature furnace door lock is to keep the furnace body sealed under extreme conditions, prevent heat loss or leakage, and at the same time be able to withstand large pressure difference. In order to achieve this goal, some alloy materials with good heat resistance and mechanical strength are usually selected as raw materials; For example, nickel-based superalloys, cobalt-based alloys and some special steel products.

2. Automatic locking mechanism: In addition to sufficient physical strength, a good door lock needs to be equipped with an automatic control unit to improve operating efficiency and reduce the risk of human error. Modern high-temperature furnaces generally adopt electromagnetic induction switch with microprocessor circuit to realize accurate management, and when the internal temperature reaches the set value, it can automatically trigger the closing action.

3. Emergency unlocking measures: Although the above two methods can effectively avoid the occurrence of most safety accidents, in order to avoid greater losses caused by unexpected situations, manual unlocking mechanism should be considered in the design stage. Once an abnormal situation leads to the failure of conventional means, the staff can quickly open the hatch to escape or take other remedial measures through special tools.

Third, practical application case sharing

At present, several common types of high-temperature furnace door locks on the market include cylinder-driven, motor-driven and spring-reset. Among them, the cylinder-driven type is highly respected because of its strong practicability. Its working principle is that the piston is pushed by compressed air to generate thrust and then the connecting rod mechanism is driven to complete the opening and closing task; For those applications where the space is narrow and it is difficult to install large-scale air supply facilities, it is more inclined to choose a motor or spring reset scheme with a high degree of miniaturization.

Fourth, summary

To sum up, according to the characteristics of different security requirements in different application scenarios, it will be the future development trend to develop a new generation of intelligent door locks with wide application range, high flexibility and low cost. In addition, we should also strengthen the publicity and promotion of existing technological achievements, so that users can fully realize the benefits brought by reasonable purchase of high-quality products, so as to jointly promote the healthy and stable development of China's high-temperature furnace industry.

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