The application of nitrogen making machine in heat treatment processing has vacuum heat treatment

Nitrogen is used as the cooling medium to adjust the nitrogen pressure of the nitrogen making machine, improve the hardening of steel parts, and protect the electric heating element of the vacuum furnace. Controlled atmosphere nitrogen as dilution gas can reduce the consumption of raw gas and reduce the formation of carbon black. The nitrogen produced by the carburizing nitride machine can be used for anti-oxidation cooling after carburizing, reducing the internal oxidation degree of steel parts, improving the decomposition rate of furnace gas and the fatigue strength and breaking resistance of parts.

Protect gas, safety gas furnace blowing, exhaust, furnace door gas curtain seal; When the gas is cut off, the nitrogen produced by the nitrogen maker can be sent into the furnace to prevent the explosion of the furnace gas. Controlled atmosphere for storage and transportation, when fruits and vegetables are stored at their optimum refrigeration temperature, their respiration rate will decrease. When nitrogen is used to reduce the oxygen level in the storage device to 2-5%, the fruit's breathing rate can be further reduced. When fruits are stored at the optimum temperature, they can be stored for 2 to 3 months. But when nitrogen is used to reduce the oxygen content in the storage tank, the same fruit can be stored for more than a year. For most perishable fruits, especially apples, bananas, pears, berries and kiwis, freshness can be prolonged by balancing the atmosphere of nitrogen, oxygen and carbon dioxide in the freezer.

Nitrogen, used to keep food fresh, has been used in ground storage warehouses and on ships, and many refrigerated cargo ships have been converted to air carriers to pick up and transport fruit from one continent to another. Extending the storage time of these delicate fruits has important implications for market prices.