Carburizing is a case-hardening process in which carbon is dissolved in the surface layers of a low-carbon steel part at a temperature sufficient to render the. Gas carburizing is a surface-hardening process that is carried out at a high temperature, usually above °C. Carburizing is essentially the addition of carbon. Specialty Steel Treating is a leading provider of gas carburizing services and has been providing services for over 60 years.

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The setpoint may give a boost phase where the carbon potential would be typically set above 1. Have a specialist contact you.

A main goal when producing carburized workpieces is to ensure maximum contact between the workpiece surface and the carbon-rich elements. The higher temperatures increase the carbon solubility gaw the diffusion rate.

Carburising Gas Reactions

In gas and liquid carburizing, the workpieces are often supported in mesh baskets or suspended by wire. Wikipedia articles with NDL identifiers. The components are held in a molten salt that introduces carbon into the metal.

Carbon is diffused inwards producing a hardened case by rapid quenching. The recipe will specify the quench method, the quenchant temperature and time.

Carburising Gas Reactions

This page was last edited on 9 Augustat Cr, Mo, whereas less strong formers, i. We use cookies to provide you with a better onsite experience.


The carbon monoxide gas needs to be contained safely. All available heat treatment information will then be displayed for the chosen material. Gas Carburising Services Approx Price: Our uncompromising approach and gaa to customer service have earned us repeat business for many years. The atmosphere is significantly simplified although the furnace enclosure is difficult. Thus, the time necessary for case depth is minimized. Case-hardening creates a very hard exterior with a tough interior.

Typically the materials that acrburising carbonized are low-carbon and alloy steels with initial carbon content ranging from 0. We Also Deal In.

The production of Endothermic gas gqs usually carried out in an external gas generator. Both of these mechanisms strengthen the surface of the metal, the former by forming pearlite or martensite, and the latter via the formation of carbides.

Gas Carburizing

In other applications, especially when dimensional stability is critical, the retained austenite content should be low. Carburizing[1] carburising chiefly British Englishor carburization is a heat treatment process in which iron or steel absorbs carbon while the cagburising is heated in the presence of a carbon-bearing material, such as charcoal or carbon monoxide. A fixed value has to be introduced into the Carbon potential controller in the form of a Process Factor or CO factor see below.

As a result, we create a more dependable product with unmatched value. Eurotherm provides heat treat control solutions for both types of furnaces, as well as other metal treating processes such as:. The offered service is executed as per the demands of our valuable clients. Combining reactions 6 and 9and using the equilibrium constant to calculate carbon activity.


Iron and steel production. These ratios will change depending on the composition of the hydrocarbon feed gases and the water vapor content of the ambient air.

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The dependence of carbon potential on the steel gae, can be explained by the fact that in the presence of alloying elements the effective carbon potential of the atmosphere is increased be elements which form more stable carbides than iron, i.

Specialty Steel Treating is a leading provider of gas carburizing services to many different industries.


The process is environmentally friendly in comparison to gaseous or solid carburizing. Chromium tends to decrease the activity coefficient, and nickel carbhrising to raise it. Corrosion of Zirconium Alloys: Identifying Limiting Conditions for Coatings Specification.

Many of the problems with pack carburizing are eliminated in this process. Our mission is simple; to make Total Materia the one-stop place and first choice of engineers world wide.