Gas carbonitriding automatic control method and device

Abstract

The invention discloses a gas carbonitriding automatic control method and device. The device comprises nine devices, namely, a nitriding furnace 1, a PLC, a pressure sensor, a hydrogen probe, a thermocouple, a blade, a fan, a heating and temperature control device and an air exhausting device. After being subjected to degreasing, cleaning and surface treatment, a part is subjected to closed loop feedback control of a vacuum pump, nitrogen, ammonia, ethyl alcohol, temperature and pressure in the furnace, so that the nitrocarburizing of various common nitriding steel such as high-speed steel and stainless steel is achieved. The device is energy-saving and efficient in use, easy to maintain and free of pollution, the product is high in quality performance, the PLC control system is adopted to quickly confirm and control the depth of the white etching layer and the reticular layer of the part to be stable according to the number of corresponding parts and the technological parameters of the material, the uniformity of stainless steel mass production is stable, the ammonia consumption is less, the energy consumption is low, the nitridation time is short, and the efficiency is high.

Description

technical field [0001] A gas carbonitriding automatic control method and device of the present invention belong to the technical field of gas carbonitriding. Background technique [0002] Nitrocarburizing is a chemical heat treatment process in which carbon is infiltrated mainly while nitriding is the main purpose. It is also called soft nitriding. The main purpose is to improve the wear resistance and seizure resistance of steel to meet the requirements of product quality. In the soft nitriding industry, enterprises are constantly pursuing production control methods and devices with better production processes, higher quality nitriding products and more complete automation to reduce labor costs, reduce human errors, increase process stability, and increase product quality. quality and increase production efficiency. [0003] The existing nitrocarburizing technology is mainly divided into liquid method and gas method, that is, salt bath nitrocarburization and gas nitrocarbu...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a simple structure, safe and reliable, energy-saving and high-efficiency, easy maintenance, no pollution, high product quality and performance, adopt PLC control system to quickly establish process parameters for the number of corresponding parts and materials, and control parts. A gas carbonitriding automatic control method and device with stable white layer and reticular layer depth, stable mass production uniformity of stainless steel, low ammonia gas consumption, low energy consumption, short nitriding time and high efficiency, to overcome the existing technology lack of

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