The difference between carburizing and nitriding of stainless steel
What is the difference between carburizing and nitriding of stainless steel? The two sound similar, but the effects are very different.
The materials suitable for carburizing are generally low-carbon steel or low-carbon alloy steel. After carburizing, the carbon content on the surface of the workpiece is increased, and the surface obtains high hardness and wear resistance. The toughness and plasticity of low-carbon steel can be maintained inside, and it can withstand a certain impact load, achieving the effect of hard outside and tough inside.

Nitriding is a chemical heat treatment process that allows nitrogen atoms to penetrate into the surface of the workpiece. Improve surface hardness and wear resistance, low nitriding temperature, small deformation, used for parts with relatively high requirements for precision and wear resistance, the nitriding layer is relatively thin, and it is not suitable for parts with particularly large loads.

What is the carburizing treatment process for stainless steel?

The stainless steel workpiece is heated and kept warm in the carburizing medium for a certain period of time, so that carbon atoms penetrate into the surface of the workpiece, so that the surface obtains a certain concentration and gradient carbon content of the heat treatment process. Carburizing can improve the hardness, wear resistance, fatigue resistance, etc. of the workpiece surface.

What is the nitriding treatment process for stainless steel?

Nitriding is a process of placing a stainless steel workpiece in a nitriding atmosphere, heating it to 500℃-600℃, and infiltrating nitrogen atoms into the workpiece surface to form nitrides. In order to ensure the mechanical properties of the workpiece core, modulation treatment should be performed before nitriding.

What are the characteristics of nitriding treatment of stainless steel products?

1. After nitriding, the workpiece no longer needs quenching, and the surface has high hardness, wear resistance and thermal hardness.

2. The fatigue hardness of the workpiece is increased by 25%-32%.

3. The nitriding temperature is low, and the deformation is much smaller than that of carburizing and surface quenching. After nitriding, generally only fine grinding or grinding and polishing is required.

4. The workpiece has strong corrosion resistance in the atmosphere, tap water, hot steam and weak alkaline solution.