What is carburizing and nitriding?

Carburizing: Carburizing is a heat treatment process that diffuses carbon into the surface of a metal to create a hardened surface. Nitriding: Nitriding is a heat-treating process that diffuses nitrogen into the surface of a metal to create a hardened surface.

How is nitriding different from carburizing?

The main difference is that in nitriding, nitrogen atoms are made to diffuse into the surface of the parts being processed, whereas in carburizing, carbon is used. Gas nitriding develops a very hard case in a part at relatively low temperature, without the need for quenching.

How the plasma carburizing and nitriding are beneficial over the conventional carburizing and nitriding processes?

Plasma carburising and plasma nitriding are thermochemical processes for increasing the surface hardness of low carbon steels. Compared with conventional carburising, they offer excellent control and repeatability, low energy consumption and fast heat treatment times.

What is the temperature of carburizing?

Gas carburizing is normally carried out at a temperature within the range of 900 to 950 °C. In oxy-acetylene welding, a carburizing flame is one with little oxygen, which produces a sooty, lower-temperature flame. It is often used to anneal metal, making it more malleable and flexible during the welding process.

What is the difference between nitriding and carburizing?

Higher temperatures increase the carbon diffusion rates and thus the hardening is increased. Here, the steel is submerged in a liquefied carbon environment. Carbon diffusion is more efficient in this method. Nitriding is a heat-treating process that diffuses nitrogen into the surface of a metal to create a hardened surface.

How is carbon monoxide reduced in carburizing?

Components are heated with the production of carbon monoxide (a reducing agent). The reduction by carbon monoxide occurs on the steel surface with the release of carbon that is diffused into the surface due to high temperatures. Then this carbon gets hardened.

What kind of heat is used for carburizing?

Carburizing must be heat treated, usually tempered low temperature tempering. Wear resistant and impact resistant parts with high hardness and high toughness at the center of the surface are obtained. Nitriding is the most widely used gas nitriding process with a heating temperature of 500-600 degrees centigrade.

What kind of steel is used for carburizing?

Carburizing and nitriding generally refer to surface chemical heat treatment of steel. Carburizing must be made of low carbon steel or low carbon alloy steel. It can be divided into solid, liquid and gas carburizing three kinds.