KANTHAL APMTM TUBES & TUBOTHAL ® ELEMENTS CASE STORY Carburizing normally takes place at 930°C (1700°F) but in this case, the Japanese company Dowa Mining Co., increased the temperature to 1050°C (1920°F) and the furnace capacity some 30 % with the help of Tubothal ® system. The first commercial high temperature con ti­ nuous carburizing furnace was a reality, and it is here to stay. THE CHALLENGE TUBOTHAL ® AND KANTHAL APMTM TUBES FOR 1050°C (1920°F) Dowa Mining Thermotech Division is a commercial heat treater and furnace builder in Japan. One of their cus- tomer was running a continuous carburizing furnace at 930°C (1700°F) for auto parts but needed higher capacity. Different alternatives were discussed with Dowa and in contacts with Kanthal, it was discussed if Kanthal

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