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为了降低带钢冷轧工作辊单位消耗,要求增大有效使用直径,省去重淬。一般认为这必须大大增加淬硬层深度。 神户制钢所根据过去采用的双频渐进式感应加热淬火方式,建立了增加淬硬层深度的淬火技术。其结果:能够制造深淬硬层轧辊,这种轧辊距辊面30mm深的硬度达HS90以上,而且现已提供了数量较多的产品。 据说一般淬硬层越深的轧辊,因卡钢等轧制事故引起轧辊损害的程度就越大。因此,增加淬硬层深度结果反而使轧辊单位消耗提高,所以同时兼备耐事故性就成为轧辊
In order to reduce the strip unit consumption of cold-rolled work rolls, require the effective use of increased diameter, eliminating the need for heavy quenching. It is generally believed that this must greatly increase the depth of the hardened layer. Based on the dual-frequency incremental induction heating quenching method adopted in the past, Kobe Steel has established a quenching technology that increases the depth of the hardened layer. As a result, it is possible to manufacture deep-hardened rolls with a hardness of 30 mm or more above the roll surface of HS90, and a large number of products are now available. It is said that the harder layer of the general depth of the roll, due to rolling steel and other rolling caused the extent of damage to the greater the roller. Therefore, increasing the depth of the hardened layer, on the contrary, results in an increase in the unit consumption of the rolls. Therefore,