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首页> 外文期刊>新日鉄技報 >High Speed Steel Type Cold Rolling Mill Roll by Continuous Pouring Process for Cladding
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High Speed Steel Type Cold Rolling Mill Roll by Continuous Pouring Process for Cladding

机译：高速钢型冷轧轧机通过连续浇注工艺进行包层

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Since strip rolling work is performed through the roll, the quality of a roll which contacts a product directly influences to product quality and productivity, and the improvement in the roll performance has been desired strongly. Authors developed the high speed steel roll manufactured by the CPC process (Continuous Pouring process for Cladding) in order to aim at fast improvement in a life of roll. The feature and the obtained result of the new roll are summarized as follows. (1) It has a fine casting microstructure with the hard eutectic carbide; (2) High hardness over 800HV, the stable structure at high temperature and low residual stress are achieved owing to the application of progressive low frequency induction hardening process and high temperature tempering. As a result, the resistance to roll marks and cracking in incident is improved; (3) When rolling operation is presented, the developed roll maintains the initial surface roughness much longer and holds the stable friction coefficient within a roll byte. The rolling campaigns has been greatly improved 3 to 5 times comparing to the conventional 5 mass percent chromium forged steel roll; (4) Wear loss of a roll is also very small and the width inversion (schedule-free) operation in using oil lubricants is attained. Thus, this roll demonstrates a high performance in wear resistance, small fall of surface roughness, and the resistance to incident, and eases the restrictions conditions of a roll reason sharply in a cold rolling field. In addition to the improvement in productivity, a flexible rolling operation, the simplification and laborsaving of roll management, and the increase in efficiency of a physical distribution.
机译：由于滚动工作通过辊进行，因此接触产品的辊的质量直接影响产品质量和生产率，并且强烈需要改善辊性能的改善。作者开发了由CPC工艺制造的高速钢辊（连续浇注熔覆过程），以便瞄准卷筒寿命的快速改善。该特征和新辊的所获得的结果总结如下。 （1）它具有具有硬共晶碳化物的细铸造微观结构; （2）高硬度超过800HV，由于逐行低频感应硬化过程和高温回火的应用，实现了高温和低残余应力下的稳定结构。结果，改善了引物卷曲和裂缝的抵抗力; （3）当提出轧制操作时，发育辊保持初始表面粗糙度更长，并将滚动字节内的稳定摩擦系数保持在较长的状态。与传统的5质量％的铬锻造钢辊相比，轧制活动得到了3〜5倍; （4）辊的磨损损失也非常小，达到使用油润滑剂的宽度反转（无需抽取）操作。因此，该辊在耐磨性，表面粗糙度小的高性能和对入射的抵抗力中表现出高性能，并且在冷轧场中急剧地减轻了滚动原因的限制条件。除了提高生产率，灵活的轧制操作，轧辊管理的简化和耐用性，以及物理分布的效率的提高。

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