The rapid development of industrial technology in the modern era has imposed strict requirements on the specifications of products at home and abroad. On the other hand, the production volume is increasing, in order to ensure that the structure and mechanical properties of products processed by vacuum annealing meet the standards for products. Claim. The technical problem of reducing energy consumption not only in improving the performance of the vacuum annealing furnace has attracted widespread attention in the industry at home and abroad. In the last three hundred years, some developed countries have conducted serious research on various aspects such as heat source, equipment structure, furnace temperature control system and the annealing process of vacuum annealing furnace. And many new products have been developed, such as flow fans, high temperature shifts, heating elements and many more. These innovations improve the heating rate of the annealing furnace, the uniformity of the annealing furnace temperature, improve the quality of the annealing products, and reduce the power consumption. In short, a new breakthrough is achieved in the comprehensive technical performance of the annealing furnace.

Design of a PLC controls system for vacuum annealing furnace. It is well known that vacuum annealing furnaces are a very important and essential equipment in many metal heat treatment processes. Vacuum and temperature are the main controlled variables of vacuum annealing furnaces. The precise control of temperature and vacuum is to ensure their products. An important guarantee of quality. It will also be said that the stability and accuracy of the annealing furnace temperature and vacuum control will directly affect the quality of the product.

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