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SANDVIK INVESTS IN CONTINUOUS PRODUCTION LINE FOR WOODBAND SAW STRIP
Sandvik Materials Technology has confirmed that the expected product and capacity benefits, arising from an investment in a continuous finishing line for woodband saw strip steel, are now being realised. The total investment of around 70MSEK ($10 million) includes a new heat treatment furnace for hardening and tempering and a new finishing line for polishing strip steel. For woodband saw steel, the main benefits lie in improved product quality. Close control of material hardness reduces the range or band of hardness variation. A narrower and more predictable band of tensile strength means less deviation between coils and less bench work for tensioning bandsaw blades, leading ultimately to a longer blade life. Sandvik bandsaw steel is characterised by high strength and toughness. At the same time, the new line produces a better surface finish and improved flatness and straightness tolerances, benefits, which are carried through to the finished blade. A finer surface finish gives less starting points for cracks and again contributes to longer tool life. Planned for use mainly for woodband saw strip steel, Sandvik is producing other precision strip steel products, such as conveyor belts, by the same route. The line has been designed to take two parallel strips up to 500mm wide, or one strip at 1270mm, in a thickness range between 0.50 and 3.5mm. It represents a significant increase in production capacity resulting in potential reductions in delivery times.
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