Tungsten carbide rolls using CIC technology, the world's tungsten carbide rolls H6T with the least binder phase has been developed. Its binder phase content is only 6%, while the hardness and wear resistance are significantly higher than ordinary grade alloys, especially the wear resistance is improved by 50%. When used on the finished frame and the front frame of the finished product, the roll life is twice that of the ordinary grade cemented carbide; the problem of changing the roll between the finished frame and the finished front frame is better solved, and the groove change can be significantly reduced. The number of tungsten carbide rolls is changed, thereby increasing the effective working rate of the rolling mill.
CIC composite tungsten carbide rolls has been used in wire rod mills (medium rolling or pre-finishing), bar mills (medium rolling, finishing), small-scale rolling mills (square steel, hexagonal brazing, flat steel and angle steel, etc.) Three-roll mill system (such as KOCK wire rod, seamless steel pipe tension reducer). When the composite cemented carbide roll ring is used in the finishing stand of the high-speed wire rod mill in the rolling mill or the small-scale rolling mill, the single-slot rolling volume is 10 times that of the ordinary cast iron roll, and each grinding amount is only cast iron. The roll is 1/3 to 1/2. Therefore, compared with the conventional cast iron roll, the total rolling amount of the composite roll is 20 to 30 times that of the ordinary roll. When used for seamless steel pipe 3-roll tension reduction frame and pipe jacking frame, compared with the traditional cast iron tension reducer roll, when rolling large diameter steel pipe, the single groove rolling amount of the composite roll is ordinary. The cast iron roll is 20 times, and when the smaller diameter steel pipe is rolled, the single groove rolling amount of the composite roll is 40 times that of the ordinary cast iron roll, and the finished product quality and dimensional accuracy of the steel pipe are remarkably improved.
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