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Francais Verticaux Horizontaux RTP Fours blancs FPD Fours à Tapis Industriel Céramique LPE Séparateur LGO Moldatherm |
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Carburizing is a process of adding carbon to the surface. This is done by exposing the
steel part to a carbon rich atmosphere e.g. CO at a temperature of 850 - 950°C usually. The carbon will
diffuse into the steel and form austenite at that conditions, if the carbon content in the bulk material is
lower than close to the surface.
In gas carburizing, commercially the most important variant of carburizing, the source of carbon is a carbon-rich
furnace atmosphere produced either from gaseous hydrocarbons, for example, methane, propane, and butane, or from
vaporized hydrocarbon liquids.
Carbonitriding is a modified form of gas carburizing, rather than a form of nitriding. The modification consists
of introducing ammonia into the furnace chamber to add nitrogen. Nascent nitrogen forms at the work surface by
the dissociation of ammonia; the nitrogen diffuses into the steel simultaneously with carbon. Temperature is lower
compared to carburizing.
Hardening of the steel surface can be achieved after carburizing by forming martensite by quenching.
You can find a very good description at
key-to-steel.
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Continuous carburizing furnace (Tray pusher type, roller hearth type)Stable quality products are ensured because a cylindrical shell enables good temperature and atmosphere control, and the furnace comes with a state-of-the-art configuration and production management system. |
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Rotary Drum Type continuous carburizing furnaceThis type of equipment is most useful for process involving small parts-supplying, carburized hardening, washing, tempering and removal are carried out continously in a completely integrated heat treating system. |
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Pit Type Top Loading FurnaceThis is a muffle furnace using MoldathermTM heating elements. The distinctive features of this type of furnace are fast stabilization of atmosphere gas, excellent heating/cooling characteristics, ease of maintenance, and energy saving operations. |
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KCF Carbonitriding FurnaceThe KCF carbonitriding furnace is designed for flexible products and energy-savings with a construction that allows only minimal diffused heat, uniform temperature control and stable internal pressure. |
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Non-Frame KCF Carbonitriding FurnaceThe conventional frame curtain has been replaced with a vacuum-purged oil bath that improves safety and work environments where heat treatment is used.For both KCF and Non-frame KCF, a series of energy-saving furnaces employing Moldatherm which ensures quick temperature control and atmosphere seasoning have been developed.
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Mesh Belt Type Continuous Carburizing FurnaceA reliable conveyance system has been made possible in a mesh belt driven format by means of a hearth roller.This type of in-line energy-saving muffle furnace using Moldatherm is best suited for carburizing small parts. |
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Vacuum Hardening FurnaceWide lineup of oil quenching and gas cooling systems (reduced pressure, atmosphere and pressurizing. Fully automated operation and production management. Labor-saving, high precision hardening.
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Low Temperature Vacuum FurnaceTemperature distribution is greatly improved by the use of an agitator fan and current plates. The furnaces in this series are suited for low temperature processing including bright tempering as well as aging processing. |
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Vacuum Sintering FurnaceAdoption of carbon inner muffle allows the degreasing and sintering processes to be accomplished continuously in clean environment, enabling low-cost production.
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Vacuum Purge FurnaceThis is a muffle furnace externally heated by Moldatherm. Energy saving and ease of maintenance are realized with this type of furnace. |
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Box Type Tempering FurnaceA tempering furnace at the later stage of the carburizing and hardening process ensures uniform temperature distribution by hot air circulation in the furnace. This is achieved by means of a large capacity fan and soaking plates.Two series are available for high temperature applications and low temperature applications. |
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Steam Tempering FurnaceThis steam temper furnace is the most suitable for oxide sealing process and homo treatment. Moldatherm heater and the alloy muffle realize excellent temperature control and improve energy efficiency. |
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Aluminum-Light Alloy Treating FurnaceThis is a continuous furnace suited for production of light alloy products such as engine parts and cast aluminum wheels. The solution heat treating process is ensured by good temperature distribution achieved through hot air circulation and a fast-feeding roller hearth mechanism to transfer the work load to the quench chamber. |
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Continuous Annealing Furnace/Normalizing FurnaceWith this type of furnace, continuous heat treatment of any kind of material is possible. The vacuum-purge type tray-pusher bright annealing furnace has been well-received for its value-added production. |
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Nitriding FurnaceBoth atmosphere gas and the time required for heating and cooling minutely by a two-step mitriding process that allows shortened cycle-time and reduced man-power. |
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Mesh Belt Type Brazing FurnaceMoldatherm heater realizes energy saving of 15~20% and provides ease of access for maintenance. Each unit is standardized. |
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Mesh Belt Type Sintering FurnaceThe special muffle is employed to reduce atmosphere gases and to shorten seasoning time. Molatherm heater facilities maintenance, and the burn-off furnace guarantees high quality of productions. |
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Continuous Hight Temperature Sintering FurnaceThis is a high temperature sintering and firing furnace used for sintering precious metal parts and firing of UO2 pellets in the temperature range of 1200-1800°C. Select either a ceramic conveyor type, walking-beam type or tray-pusher type transfer mechanism. |
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Bottom Loading Type High Temperature Sintering FurnaceThis furnace is used for a wide variety of application, such as metal sintering, ceramic sintering, and metalizing. N2 and H2 gases are introduced into the furnace. |
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Endothermic Gas GeneratorThe Koyo endothermic gas generator produces endothermic gas, consisting of hydrogen, carbon monoxide and nitrogen and with smaller amounts of carbon dioxide, water vapor, and methane, produced from fuel gas (primarily methane) and air. It can be used for carburizing, hardening, sintering, brazing. The use of Moldatherm saves energy and simplifies maintenance. And these generators are also made more compact. |
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Exothermic Gas GeneratorThe Koyo exothermic gas generator produces exothermic gas consisting of hydrogen, carbon monoxide, carbon dioxide, water and nitrogen, from fuel gas and air under controlled conditions. It can be used for annealing, brazing, oxide reduction. |
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Ammonia Cracking Gas GeneratorThe Koyo Thermo Systems ammonia cracker, NH3-Cracker or hydrogen generator is used for the production of forming gas. Hydrogen and Nitrogen are generated in a cost effective way in a volume ratio of 3 : 1 or in a weight ratio of 14 : 3. Capacities from 5m3/h to 60m3/h are available. The NH3 is coming from bottles or from an ammonia tank. The ammonia gas is pre-heated in a heat exchanger and vaporizer and then cracked in the main furnace unit. The furnace is electrically heated by special LGO heating elements. |
New types of industrial furnaces with many improvements, including energy saving, reduced running costs, etc.
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Car Bottom FurnaceDual heating with both electricity and gas is possible. This type of furnace is best suited for heat treatment of both large and heavy objects. |
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Elevator TypeWith this type of furnace, heat loss is reduced due to improvement of sealing performance,and the atmosphere is stabilized. Space requirements of this model are less than that of comparable furnaces. |
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Strand Conveyor FurnaceThis furnace is used for annealing wires of various materials such as stainless steel and Nichrome. Compared with conventional brick furnaces, running cost is greatly reduced and cooling/heating time is shortened. |
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Pot Type Top Loading FurnaceThis is best suited for annealing and normalizing of wire, particularly copper wires. A vacuum-purge type is also available. |
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Bell Type FurnaceThis type of furnace is widely used for the annealing of wires and aircraft parts. The weight of the heating cover has been reduced, and working efficiency and safety have been remarkably improved by the use of Moldatherm. |
Koyo Thermo Systems and Crystec will be pleased to engineer a cost effective system to satisfy your most demanding and exacting requirements.
| Crystec Technology Trading GmbH est à votre disposition pour vous aider dans la réalisation de vos projets. | ||
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