Plasma nitriding, also known as ion nitriding, plasma ion nitriding or glow-discharge nitriding, is an industrial surface hardening treatment for metallic materials. Main Difference – Carburizing vs Nitriding. Plasma Nitriding. The plasma nitriding process began in the 1920's as an alternative to conventional gas nitriding. Liquid Nitriding. During gas nitriding, steel is heated to a temperature between 500°C and 580°C in the ammonia atmosphere. AIHT is uniquely capable of gas nitriding stainless steel! As with carburising, nitriding can be carried out in any of the four states of matter (solid, liquid, gas and plasma). Gas nitriding is a thermo-chemical process of steel surface hardening. Single-Stage and Double-Stage Nitriding 3. After World War II the plasma nitriding process received widespread acceptance in Germany, Russia, China and Japan. 24 4.1. Pack nitriding is not a reliable and reproducible process, whereas gas and liquid nitriding are not environmentally friendly, and tend to produce thick and brittle compound layers. Heat treatment is the use of heat to modify the properties of a material, especially in metallurgy.Heat treatment is done via heating and cooling of substances. Nitriding gas supply set up 26 4.5. UltraGlow® Gas Nitriding is a case-hardening process whereby nitrogen is diffused into the surface of a solid ferrous alloy by holding the metal at a suitable temperature in contact with a nitrogenous gas, usually ammonia. In plasma nitriding, the reactivity of the nitriding media is not due to the temperature but to the gas ionized state. ADVERTISEMENTS: The following points highlights the four main methods used for nitriding of steels. Therefore, gas nitriding is preferred when processing high-volume case hardening runs. Nitriding: Using Plasma Vs Gas. Nitreg ® is a modern heat treating process, capable of meeting the metallurgical requirements of all nitriding specifications that may have been originally written for salt bath, plasma or traditional gas nitriding. For gas nitriding, our Ohio facility is well located for Midwest manufacturers, offering one of the largest nitriding departments in the country. The Nitriding process is an established and successful means of generating a hard case on a component. This process is most useful for components such as Crankshafts, Gears and a multitude of other parts in tough environments (especially oil & gas, energy, aerospace, etc). For instance, although both processes occur at high temperatures, plasma nitriding does not require the use of a blast furnace. At Metal Plasma Technology (MPT) in Valencia California, we are experts in plasma ion nitriding. Gas nitriding is much slower than ion (or plasma) nitriding and hence requires longer time of treatment for getting the same nitrided case depth. Plasma nitriding. For a comparison of the two processes choose the Plasma vs. Gas option from the menu. Plasma Nitriding can be accomplished as low as 800°F and is the preferred Nitriding method for parts with high harnesses often seen in tool steels. Quenching is not required for the production of a hard case. Plasma ION nitriding is an industrial surface hardening treatment for iron-based materials. It is widely used to enhance the performance of titanium, chromium, and aluminum alloyed … In the original method, components are heated at about […] For applications that need the white layer removed, Plasma Nitriding should be considered. 3.3. Fry then investigated the effects of alloying elements on surface hard-ness. It is the most technically superior of all nitriding processes and has many advantages compared to traditional salt bath and gas nitriding. It occurs around 510°C. There are a huge variety of materials that this process can be applied to. There are many advantages of this method over conventional gas nitriding: • Cost effectiveness - 3 … Despite the name, the process is really a modified form of nitriding with carbon added. Vacuum, high pressure, and plasma nitriding 21 3.4. Most commonly, the term nitriding refers to steel heated in ammonia gas. Plasma nitriding and plasma nitrocarburising are often preferred to the corresponding gas processes if masking is required. Ionitriding (Plasma), or Glow-Discharge Nitriding 4. Gas Nitriding Gas nitriding is a case-hardening process whereby nitrogen is introduced into the surface of a solid ferrous alloy by holding the metal at a suitable temperature in contact with a nitrogenous gas, usually ammonia. Surface hardening thermochemical heat treatment through nitrogen diffusion. Gas nitriding is arguably the more versatile case hardening option. Method # 1. Nitrogen supply 25 4.2 Hydrogen supply 26 4.4. It has ceramic character, reduces wear and has moderate anticorrosive qualities. Due to the chemical decomposition of the ammonia at the component, the nitrogen diffuses into the surface and a diffusion and compound layer is formed. Gas-Nitriding: Gas nitriding is the most commonly used nitriding method. By adding carbon to the workpiece surface, the process of … After World War II the plasma nitriding process received widespread acceptance in Germany, Russia, China and Japan. The Gas Nitriding Process. Plasma Nitriding, also referred to as ion nitriding, is a diffusion process that improves the wear resistance and fatigue properties of the product being nitrided. Engineers considering the advantages and disadvantages of surface treatments typically have a usable lifespan, surface hardness, and fatigue strength in mind. Also, no separate heating is required as the plasma provides sufficient heating of the component's surface to reach the process temperature of typically 500°C. If the die had been gas nitrided for the same duration as in ion nitriding, the case depth would be lower and … High-speed gas injection replaces ventilator 23 4. The most efficient and well-known methods of these treatments are plasma and gas nitriding or nitrocarburizing. 1. During gas nitriding, nitrogen is provided in the form of ammonia gas. With gas nitriding, by virtue of its being held in a gaseous state, there are very few process contaminants to worry about. 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