THERMCONCEPT delivers specially developed hardening accessories that has been proven in practical use over many years. Our accessories are specially designed to completement the various annealing furnaces, thus enabling inert gas hardening or oxidation-free hardening that is easy in handling and economical in operation. Please contact us for practical advice in selecting the most useful components and how they are handled in practice.

Diamond Block System
Oxidation-free hardening up to 1300 °C

• Specially suitable for all types of high-speed steel and high-alloy chrome steels
• Multiple use of carbonaceous block, ensures protective atmosphere
• Oxidation or decarburisation of the component is almost completely eliminated
• Easy to operate, superb results, high product quality
• Can be used in all chamber furnaces

Gas Grid System
Hardening and cooling under inert gas up to 1200 °C

• Enables bright annealing with subsequent gas quenching
• No loss of time during heat-up due to use of ultra-thin foil containers
• Can be used with forming gas, nitrogen and inert gases such as argon and helium
• Very low gas consumption due to small container volumes
• Also available with optional thermocouple for continuous measurement of the temperature inside the container

Hardening Box System
Hardening, carburising, nitriding up to 1100 °C

• All hardening boxes match the inside dimensions of the annealing furnaces
• By using a neutral annealing compound, virtually oxidation-free hardening is possible
• Also available with gas connection for inert gas hardening or as atmosphere box with hinged lid that stays in the furnace
• Easy handling, reliable process

Accessories and Tools

• Hardening foils, envelopes and containers for oxidation-free annealing of steels up to 1200 °C
• Thermo-chemically stable hardening oils for tank temperature of 50 - 150°C
• Materials for cleaning, degreasing and corrosion protection
• Carburizing granulate, nitriding powder and neutral annealing compound
• Inner gas retorts and hardening boxes
• Baskets and furnace grids
• Charging wagons
• Hand tools and heat-resistant gloves
• Charging tools such as shovels, draw-hooks and charging plates
• Hardness tester

Ask for our special brochures!