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本文分析了硬质合金复合轧辊机械复合几种形式的优缺点,设计了液压法兰机械螺母式硬质合金复合轧辊;用普通机械螺母完全替代了液压螺母,预紧机构只是装卸的工具,简化了硬质合金复合轧辊的结构;易老化的密封元件,不参与轧钢生产,不受其恶劣环境的影响,材质要求降低,使用寿命增长;预紧力所产生的摩擦力矩,远大于轧钢所需的轧制力矩,完全满足棒线的轧制条件;结构优化前后复合轧辊各个组件受力状况无任何改变,并且优化后的结构,受力更加均匀,钢轴弯曲变形小;预紧机构综合成本降低很多,将近4 000～8 000元/件,年可节省成本80～160万元;经过20次修磨,长时间工艺应用实验后,液压法兰机械螺母式硬质合金复合轧辊没有出现松动,结构稳定、安全、可靠,此结构已在我公司所有客户中推广应用。液压法兰机械螺母式硬质合金复合轧辊拆卸方便、省力,操作者劳动强度降低。
This paper analyzes the advantages and disadvantages of several forms of carbide composite roll mechanical composite design of the hydraulic flange mechanical nut-type carbide composite roll; with a common mechanical nut completely replace the hydraulic nut, the preload mechanism is only loading and unloading tools to simplify Carbide composite roll structure; easy to aging seal components, not involved in the rolling production, from its harsh environment, reduce the material requirements, increased service life; pre-tightening force generated by the friction torque is much larger than the required steel rolling Of the rolling torque, fully meet the bar rolling conditions; structural optimization before and after the composite roller components without any change in stress conditions, and the optimized structure, the force is more uniform, less bending deformation of steel; pre-tightening mechanism costs Reduce a lot, nearly 4 000 to 8 000 yuan / piece, the annual cost savings of 80 to 160 million; after 20 grinding, a long time after the application of technology experiments, hydraulic flange mechanical nut cemented carbide composite roll did not appear loose The structure is stable, safe and reliable. This structure has been popularized and applied in all our customers. Hydraulic flange mechanical nut-type hard alloy composite roll disassembly convenient, labor-saving, reduce the labor intensity of the operator.