FIXING DEVICE USING STAINLESS STEEL MATERIAL
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United States of America Patent
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Aug 30, 2016
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Aug 31, 2015
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A thin aluminum surface layer is formed on the outer peripheral surface of a tubular body of stainless steel material as a base layer to provide a fixing member. For forming the thin aluminum surface layer, arc thermal spraying apparatus is used such that material of a wire rod for thermal spraying is aluminum with purity of 99%, diameter of the wire rod is φ 1.2 mm, distance of thermal spraying is 120 mm, shifting velocity of the spraying gun is 20 mm/sec and air pressure is 0.5 MPa. Rotating the tubular body of stainless steel as a base layer at 150 rpm, thermal spraying of aluminum is performed with the spraying gun being shifted in the direction parallel to the axial direction of the tubular body of stainless steel as shown by the arrow. The thickness of the thermally sprayed aluminum surface layer is 20 to 30 μm.
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