Nitrogen Gas and the metal industry
Nitrogen purity requirements 95% – 99%
Nitrogen gas for use in process heat treatment metal, in other words, is the process of maintaining steel quality after the workpiece is heated in the furnace. In this application, nitrogen gas is used to remove oxygen from the furnace.
To reduce the chance of oxidation and in each material. Different purity values will be used. Therefore, understanding the materials used directly affects the design of the purity of nitrogen gas to be used.
Using nitrogen gas to harden the surface ( NITRIDING process)
It is a surface hardening method using nitrogen gas as a hardener instead of carbon in the meat. Steel and is used a lot today.
Used for applications that require extremely hard surfaces. The hardness obtained by heat treatment with this method is hardened only on thin surfaces and does not soften when heated, does not rust, is not easily corroded.
It is widely used in the heat treatment of aircraft parts. The method is to heat the workpiece in a sealed furnace at a temperature of about 450 – 540 ºC and inject ammonia gas into the reaction with the steel. Ammonia gas, when heated, breaks down into nitrogen and hydrogen gas.
It reacts with the elements mixed in iron, namely chromium, aluminium, molybdenum and vanadium, to form a new mixture that surrounds it. steel surface area by a slow reaction Get deep,
hard surface, very thin and take a long time. Most of the hardened surface depths are not more than 0.3 mm. If you want deeper skin, it may take a very long time.
Steel to be plated by this method requires steel containing chromium, aluminum, molybdenum and vanadium. Conventional carbon steel cannot be plated in this way. Heat treatment in this way is very expensive.
Nitrogen Gas and the metal industry
Nitrogen purity requirements 95% – 99%
Nitrogen gas for use in process heat treatment metal, in other words, is the process of maintaining steel quality after the workpiece is heated in the furnace. In this application, nitrogen gas is used to remove oxygen from the furnace. To reduce the chance of oxidation and in each material. Different purity values will be used. Therefore, understanding the materials used directly affects the design of the purity of nitrogen gas to be used.
Using nitrogen gas to harden the surface (NITRIDING process)
It is a surface hardening method using nitrogen gas as a hardener instead of carbon in the meat. Steel and is used a lot today. Used for applications that require extremely hard surfaces. The hardness obtained by heat treatment with this method is hardened only on thin surfaces and does not soften when heated, does not rust, is not easily corroded. It is widely used in the heat treatment of aircraft parts.
The method is to heat the workpiece in a sealed furnace at a temperature of about 450 – 540 ºC and inject ammonia gas into the reaction with the steel. Ammonia gas, when heated, breaks down into nitrogen and hydrogen gas. It reacts with the elements mixed in iron, namely chromium, aluminium, molybdenum and vanadium, to form a new mixture that surrounds it. steel surface area by a slow reaction Get deep,
hard surface, very thin and take a long time. Most of the hardened surface depths are not more than 0.3 mm. If you want deeper skin, it may take a very long time. Steel to be plated by this method requires steel containing chromium, aluminum, molybdenum and vanadium. Conventional carbon steel cannot be plated in this way. Heat treatment in this way is very expensive.
