Production method for avoiding uneven surface color of cutter steel hot-rolled plate
The invention relates to a production method for avoiding uneven surface color of a cutter steel hot-rolled plate. The process comprises the steps of smelting, continuous casting, hot rolling and cold rolling pickling. The method comprises the following steps: 1) adjusting the water spraying amount...
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| creator | LIANG JIANHUN FANG JIANFENG LUO JIE LIN JIE XIE SHUIWANG BANG GUN HUANG WEIWEN |
| description | The invention relates to a production method for avoiding uneven surface color of a cutter steel hot-rolled plate. The process comprises the steps of smelting, continuous casting, hot rolling and cold rolling pickling. The method comprises the following steps: 1) adjusting the water spraying amount of a water spraying header at the upper part of a hot-rolled layer cold area to be large in middle and small in two sides; cleaning impurities on the surface of the steel belt by using a reverse spraying device; (2) the cold water conductivity of a hot rolling layer is smaller than 650 microseconds, and the chlorate concentration is smaller than or equal to 70 g/L; (3) cover annealing is conducted after hot rolling, gas is continuously purged before the temperature is increased to 650 DEG C, and the purge time is longer than 3 h; and 4) cold rolling pickling, wherein pickling solution concentration and pickling temperature are controlled. By adjusting the use standard of the cooling water and the water amount of th |
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The process comprises the steps of smelting, continuous casting, hot rolling and cold rolling pickling. The method comprises the following steps: 1) adjusting the water spraying amount of a water spraying header at the upper part of a hot-rolled layer cold area to be large in middle and small in two sides; cleaning impurities on the surface of the steel belt by using a reverse spraying device; (2) the cold water conductivity of a hot rolling layer is smaller than 650 microseconds, and the chlorate concentration is smaller than or equal to 70 g/L; (3) cover annealing is conducted after hot rolling, gas is continuously purged before the temperature is increased to 650 DEG C, and the purge time is longer than 3 h; and 4) cold rolling pickling, wherein pickling solution concentration and pickling temperature are controlled. 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The process comprises the steps of smelting, continuous casting, hot rolling and cold rolling pickling. The method comprises the following steps: 1) adjusting the water spraying amount of a water spraying header at the upper part of a hot-rolled layer cold area to be large in middle and small in two sides; cleaning impurities on the surface of the steel belt by using a reverse spraying device; (2) the cold water conductivity of a hot rolling layer is smaller than 650 microseconds, and the chlorate concentration is smaller than or equal to 70 g/L; (3) cover annealing is conducted after hot rolling, gas is continuously purged before the temperature is increased to 650 DEG C, and the purge time is longer than 3 h; and 4) cold rolling pickling, wherein pickling solution concentration and pickling temperature are controlled. 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The process comprises the steps of smelting, continuous casting, hot rolling and cold rolling pickling. The method comprises the following steps: 1) adjusting the water spraying amount of a water spraying header at the upper part of a hot-rolled layer cold area to be large in middle and small in two sides; cleaning impurities on the surface of the steel belt by using a reverse spraying device; (2) the cold water conductivity of a hot rolling layer is smaller than 650 microseconds, and the chlorate concentration is smaller than or equal to 70 g/L; (3) cover annealing is conducted after hot rolling, gas is continuously purged before the temperature is increased to 650 DEG C, and the purge time is longer than 3 h; and 4) cold rolling pickling, wherein pickling solution concentration and pickling temperature are controlled. By adjusting the use standard of the cooling water and the water amount of th</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING |
| title | Production method for avoiding uneven surface color of cutter steel hot-rolled plate |
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