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Heat Treatment
At BOC we work with heat treatment specialists and manufacturers to achieve high quality, lower cost metal components.
Our total solutions draw on many years of expertise in delivering reliable gas supplies and developing patented technology for furnace atmospheres.
Heat treatment processes and applications
Our total heat treatment solutions offer versatility, high quality product, reliable performance, higher productivity, lower cost and safe, environmentally-friendly operation for heat treatment processes, including:
Annealing ferrous metals
Our atmosphere systems are based on nitrogen with additions of hydrogen, hydrocarbon or cracked methanol.
They provide a protective atmosphere whilst metal components are heated to a temperature less than transformation temperature, held to allow internal stresses to relax, and then slowly cooled.
Annealing non-ferrous metals
We supply nitrogen/hydrogen mixtures and use additives for special applications.
Our patented Atmosphere Zoning Technology minimises the use of the more expensive hydrogen component.
Autoclaving of plastics and composite materials
We supply nitrogen as a safe alternative to compressed air.
Brazing
Our patented Atmosphere Zoning Technology is applied to give precise control of different atmosphere zones in different parts of the continuous furnace.
Carburising
A source of carbon is applied for diffusion into the surface of a steel component to produce a hard martensitic structure after quenching.
For carbonitriding we supply a carbon/nitrogen mixture. We can install the total atmosphere system including methanol storage, pumping equipment, flow control panel and nitrogen generator.
Cold treatment
We supply liquid nitrogen as a coolant and a blanketing atmosphere in cold treatment of steel components to modify microstructure and achieve high wear resistance.
Decarburising
Our heat treatment experts will help you to select the most appropriate atmosphere to achieve the desired physical properties in your metal components using decarburisation and annealing.
Gas wiping
We install onsite generators for a cost-effective supply of the large nitrogen volumes used for gas wiping of galvanised strip.
Hardening and austempering
Our process experts will tailor the composition of the nitrogen-based atmosphere to achieve the desired hard martensitic or bainitic structure.
Our Atmosphere Zoning Technology minimises the use of the more expensive gases and supplies the optimum mixture for each stage of the process.
Hot isostatic pressing
We have extensive experience in the design and installation of high pressure gas delivery systems used in HIP.
We can advise on the choice between nitrogen and argon as the pressurisation medium.
Nitrocarburising
We supply a range of world-class, low temperature surface engineering technologies which can be tailored to the component size.
Our range of treatments offers unique combinations of resistance to seizure, wear resistance, corrosion properties and low distortion.
Nitriding
We supply nitrogen for purging before and after the nitriding cycle to avoid the risk of explosion.
Quenching
Nitrogen, hydrogen, argon and helium are supplied for gas quenching; an environmentally friendly alternative to oil quenching.
Sintering
Our Atmosphere Zoning Technology maintains the optimum conditions in each stage of the continuous furnace, reducing reject rate.
For more information about heat treatment email us
