Over the years, nitrogen has been widely used in all aspects of the heat treatment industry, such as acting as a protective gas, purge gas, and inert gas processing. Nitrogen is often used in the processing of metal primary products (such as steel billets, steel ingots and steel bars) and in the processing of metal products (metal parts processing). ROC ultra-high-purity nitrogen generator allows you to produce high-purity nitrogen at a very low price in the industrial field. For the composition of the atmosphere in the high-temperature furnace, function and control play a vital role in metal strengthening and thermochemical operations.
The nitriding process is usually carried out in a convection furnace, which is either a deep pit type or a box type. Before filling the furnace with ammonia gas, purge the furnace with nitrogen to exhaust the air in the furnace. The main purpose of purging the furnace body is to prevent ammonia and oxygen in the air from reacting at high temperatures. When the ratio of ammonia to oxygen reaches a certain range, an explosive gas atmosphere will be formed. The temperature rise of the nitriding furnace is also carried out under a nitrogen atmosphere. When the nitriding process is over, the inside of the nitriding furnace needs to be purged with nitrogen to ensure safety. At the same time, the cooling process also needs the assistance of nitrogen to prevent the metal surface from being oxidized. The carbonitriding process is very similar to the nitriding process. The difference is that carbon dioxide is also added to the gas treatment process. At the same time, the cooling process is faster in comparison.
The ultra-high-purity nitrogen generator can provide ultra-high-purity nitrogen with an oxygen concentration of less than 5ppm on site to meet the application requirements of the nitriding furnace. The ultra-high-purity nitrogen generator produces nitrogen on site, which is convenient and fast, and the cost performance is significantly higher than that of conventional nitrogen delivery methods.
