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Manufacturing method of ceramic plasma spraying of immersion roll (SIEN ROL) and support roll (STAA イ ル イ ン イ ン ル ROL) installed in a bath (POT) in the equipment for manufacturing continuous molten aluminum plated steel sheet
Manufacturing method of ceramic plasma spraying of immersion roll (SIEN ROL) and support roll (STAA イ ル イ ン イ ン ル ROL) installed in a bath (POT) in the equipment for manufacturing continuous molten aluminum plated steel sheet
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机译：浸没辊（SIEN ROL）和支撑辊（STAAイルインインルROL）的陶瓷等离子喷涂的安装方法
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摘要
(Purpose) The behavior in the plating bath is very important in order to improve the surface property of hot-dip galvanized steel sheet. The wear and erosion parts of iron-based dip rolls and support rolls are transferred to the surface of the plated steel sheet during continuous hot-dip plating, and thus deteriorate the surface properties. In order to solve the problem of shortening the life of iron-based immersion roll, an object of the present invention is to provide a method for manufacturing a multi-stage ceramic coated immersion roll and support roll excellent in wear resistance and corrosion resistance in a molten aluminum plating bath.;(Composition) The surface roughness of the roll surface was impregnated with iron-based grit using the surface shot blasting machine of the immersion roll or the support roll, and then degreased, washed with water, dried, and then cobalt 50-60wt%, chromium 25-30wt%, 60 to 10% of cobalt, 30 to 5% of chromium, 5 to 5% of tungsten and tungsten were first sprayed on the surface of the mixed powder of 5 to 10 wt% of nickel, 5 to 7 wt% of tungsten and 0.5 wt% of carbon. 4.5wt%, carbon 0.5wt% mixed powder, alumina 94wt%, silica 1.0wt%, calcium oxide 5wt% mixed powder at a ratio of 50:50, and the secondary spray treatment to about 100㎛ A mixture of 94 wt% alumina, 5 wt% calcium oxide, and 1 wt% silica was thermally sprayed on the surface of the thermally sprayed roll at about 500 µm, and 70 wt% of alumina, 25 wt% of zirconia, and 5 wt% of silica were applied to the third thermally sprayed roll. Molten aluminum plating steel by 4th spray treatment of mixed powder of To prepare a multi-step preparative process sprayed ceramic-coated immersion roll or support roll.
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