Thermex will meet your precise carburizing or carbonitriding specifications, or recommend the optimal process or combination of processes based on the alloy . Also low-pressure carbonitriding (LPCN) is possible. During this process type, the carbon and nitrogen transfer does not normally take place simultaneously. The carbonitriding process, which involves the diffusion of both carbon and nitrogen into the base steel, can be carried out in a salt bath or in a furnace gas.

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Typical applications for case hardening are gear teethcams, shafts, bearingsfastenerspins carbonitridinv, hydraulic piston rodsautomotive clutch plates, toolsdies and tillage tools.


This process is used to improve corrosion properties of material that are subjected to wear. Definition – What does Carbonitriding mean?

Carbonitriding is similar carbonitridong gas carburization with the addition of ammonia to the carburizing atmosphere, which provides a source of nitrogen. Carburizing is a surface hardening treatment that produces a hard, wear-resistant layer case on the part surface. Identifying Limiting Conditions for Coatings Specification.

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The resulting lustrous black finish is an effective alternative for both chrome and nickel plating. It is possible to use both carbonitriding and carburizing together to form optimum conditions of deeper case depths and therefore performance of the part in industry. Carbonitriding is often applied to inexpensive, easily machined low carbon pdocess to impart the surface properties of more expensive and difficult to work grades of steel.


Bloomery produces sponge iron Blast furnace produces pig iron Cold blast Hot blast Anthracite iron Proccess reduced iron. To begin, it has a carbonotriding resistance to softening during tempering and increased fatigue and impact strength.

Where can I find a coating that is chloride and sulfur corrosion-resistant? Shorter processing times are preferred to restrict the concentration of nitrogen in the case, as nitrogen addition is more difficult to control than carbon.

Carburizing & Carbonitriding | Thermex Metal Treating

The lower temperature allows oil quenching, or even gas quenching with a protective atmosphere. Typical applications of carbonitriding include: Carbonitriding tends to be more economical than carburizing, and also reduces distortion during quenching.

Iron and steel production. Monitoring and tight control of furnace temperature, time, atmospheric composition and gas circulation. Case depth is tailored to the application; a thicker case increases the wear life of the part. Prpcess is adsorbed into the surface and diffuses into the work piece along with carbon.

Process Selection and Quality Control For both carburizing and carbonitriding, the optimum case depth will depend on ptocess intended service. View a sample Case Depth Survey here. This article needs additional citations for verification. Thermex will meet your precise carburizing or carbonitriding specifications, or recommend the optimal process or combination of processes based on the alloy grade and intended use of the part.

August Learn how and when to remove this template message. Maximum case depth is typically restricted to 0. Temperature uniformity surveys of furnaces are also completed. Views Read Edit View history. Carbonitriding involves the addition of carbon 0. Request a Quote Contact Us. Carbonitriding is a surface modification process that involves diffusion of carbon and nitrogen atoms into interstices small spaces in the surface of metal.


Typical thickness is around 0. During the process, atoms of carbon and nitrogen diffuse interstitially into the metal, creating barriers to slipincreasing the hardness and modulus near the surface. Unsourced material may be challenged and removed. Articles needing additional references from August All prrocess needing additional references.

Case depth can range from as low as 0. The parts are then oil quenched, and the resulting part has a harder case than possibly achieved for carburization, and the addition of the carbonitrided layer increases the residual compressive stresses in the case such that the contact fatigue resistance and strength gradient are both increased. Carbonitriding Carbonitriding is a modified form of gas carburizing, suitable for plain, low carbon steels that would not achieve a uniform case hardness in standard gas carburizing.

Electro-slag remelting Vacuum arc remelting Argon oxygen decarburization. Pattern carbonotriding Damascus steel Crucible steel Tatara furnace Cementation process. Carbon levels are precisely controlled using automatic control based oxygen probes. Carbonitriding is a metallurgical surface modification technique that is used to increase the surface hardness of a metal, thereby reducing wear.

The hardness of a surface is directly proportional to the carbonitrriding of diffusion of carbon and nitrogen in the surface. Successful carburizing and carbonitriding both demand precise control of the treatment process.