Sandvik launches Kanthal APMT furnace rollers

Sandvik has launched new Kanthal APMT furnace rollers that significantly outlast rollers made from conventional alloys. Even in temperatures as high as 1250 degrees, rollers made from Kanthal APMT remain straight and rigid, allowing steel mills to increase productivity and quality while saving on maintenance and spare parts storage. In the first phase, the furnace rollers will be used for roller hearth furnaces and walking beam furnaces in Europe, the Middle East and Africa. The rollers will be offered to other markets in successive phases. An iron-chromium-aluminum alloy, Kanthal APMT is ideal for high temperature applications like furnace rollers, used for transporting products that are annealed in air atmosphere. Kanthal APMT is characterized by a combination of high creep strength and superior resistance to oxidation at high temperatures. The new rollers require one maintenance stop instead of two, allowing seven to eight days of extra production, totaling 170 extra tons a year. The new roller design features a surface that improves the quality of the tube products as opposed to traditional rollers that form rough surfaces, compromising the quality of tubes. Rollers made from Kanthal APMT require a minimal amount of water, if any, for cooling purposes, reducing energy requirements and offering a greener approach to tube manufacturing.

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