plasma nitriding vs case hardening
During plasma nitriding, in a vacuum at a temperature between 350 °C and 600 °C, in the presence of nitrogen and electric field, a plasma of accelerated atoms develops which collide against steel surface at a very high speed.A hard compound layer of nitrides is formed, followed by a diffusion layer and tough core. While nitrocarburizing and carbonitriding may seem complicated, they’re also critical to ensuring parts can stand up to the environments in which they’ll be used. NITRIDING Nitriding is a heat treating process that diffuses nitrogen into the surface of a metal to create a case hardened surface. Plasma Nitriding uses glow discharge technology to introduce elemental nitrogen to the surface of parts for subsequent diffusion. Ionitriding (Plasma), or Glow-Discharge Nitriding: It is a case-hardening process of enriching the surface of the steel with nascent nitrogen by glow discharge method. Plasma (ionized gas) is the fourth material state. It is the most technically superior of all nitriding processes and has many advantages compared to traditional salt bath and gas nitriding. Copyright © 2006 TPP Information Centre. Nitriding is a heat treating process that diffuses nitrogen into the surface of a metal to create a case-hardened surface. Quenching is not required for the production of a hard case. These processes are most commonly used on high-carbon, low-alloy steels. Nitrogen reacts with the iron and other alloys on the surface, forming strong nitrides that protect the surface of the material. Together with the advantages of using only environmentally-friendly gases, plasma-based nitriding has become a focal point for additional innovations, and a requirement for those that seek a safer, more eco-friendly solution. Plasma Ion Nitriding is the most advanced case hardening process available. Plasma nitriding. Plasma Nitriding or Ion Nitriding is a significant development of the original Nitriding process. Heat treatment is the use of heat to modify the properties of a material, especially in metallurgy. The nitrogen ion, N+, will then diffuse into the metal surface as finely dispersed nitrides, imparting high hardness to the surface. Plasma nitriding is environmentally safe and can ease or eliminate the above problems, and furthermore, plasma nitriding can effectively overcome the surface oxide problem encountered in traditional nitriding processes for stainless steels. Nitriding. Nitrocarburizing is much quicker and takes 0.5 to 6 hours. The Nitriding process is an established and successful means of generating a hard case on a component. Nitriding and carburizing are the two most common heat treatment practices for surface hardening functional components. Plasma Nitriding - the most advanced case-hardening technology today Nitriding in pulse glowing discharge (PLASMA nitriding) is an efficient method to increase hardness and wear-resistance of … Our plasma nitriding hardness chart will help you identify the materials & typical results achieved when considering nitriding. Due to their shape and size, carbon atoms cannot diffuse into the part in this low-temperature process. The case hardening experts at Paulo have the tools and expertise to ensure your parts are up to spec and up to the job. There’s no theoretical limit to how deep a case can be achieved in either process, but a practical limit is how much time and resources one is willing to spend to achieve certain case depths. / Services / Nitriding and Nitrocarburizing / Ion (Plasma) Nitriding If you have questions about these or other heat treating processes, be sure to get in touch or read through our heat treating guide below: Nitriding is a popular case hardening technique renowned for the qualities it delivers at relatively low process temperatures. Mid-South Metallurgical is proud to offer one of the most advanced methods for case hardening steel components in the heat treating industry today-ion nitriding. A plasma nitrided part is usually ready for use directly after treatment requiring no machining, polishing or any other post-nitriding finishing operations. Ferritic nitrocarburizing is unique in that it offers case hardening without the need to heat metal parts into a phase change (it’s done at between 975 and 1,125 degrees Fahrenheit). Unlike nitrocarburization, in nitriding only nitrogen is transferred. Plasma Nitriding, also called Ion Nitriding, is a thermo-physical case hardening process. Nitriding is a case-hardening process of enriching the solid steel surface with nitrogen at a low temperature, normally in the range of 500-575°C (i.e., below A 1), when the steel is ferritic.. In Micropuls® plasma nitriding, we use the processes of PLASNIT® and … Plasma nitriding, known also as ion nitriding is a form of case hardening process. NITRIDING These processes are most commonly used on low-carbon, low-alloy steels. The chemical changes brought on by case hardening are responsible for the added hardness of a part’s surface. Then nitrogen atoms incorporate into the surface of the metal, cleaning the surface and diffusing into the metal. 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