Roll for hot rolling with increased resistance to thermal cracking and wear

申请公布号：EP0819490(A1)

申请号：EP19970850110

申请日期：1997.07.07

申请公布日期：1998.01.21

申请人：

SANDVIK AKTIEBOLAG

发明人：MADERUD, CARL-JOHAN;ERICSON, THOMAS;FISCHER, UDO

分类号：B21B27/00;B22F5/00;C22C1/05;C22C29/06;C22C29/08

主分类号：B21B27/00

摘要：According to the invention there is now provided a roll for hot rolling comprising 70-95 weight %, preferably 85-94 % WC in a binder phase consisting of only cobalt or alternatively a Co-Ni-Cr-alloy containing 20-35 wt-% Ni and up to 10 % Cr, possibly with small additions of molybdenum. The WC grains are rounded with an average grain size between 3-10 mu m, preferably 4-8 mu m. The maximum grain size should not exceed 2 times the average grain size and no more than 2 % of the grains be less than half of the average grain size. <IMAGE>

HYSTERESIS TYPE INPUT CIRCUIT

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BACKWARD COMPATIBLE LOCK SYSTEM, KEY BLANKS AND KEYS THEREFOR.

FREEZE RESISTANT WATER FILTER.

METHOD AND CIRCUIT FOR OPERATING A STORAGE DEVICE.

СУДОВАЯ ВАЛОГЕНЕРАТОРНАЯ УСТАНОВКА

УСТРОЙСТВО РЕАЛИЗАЦИИ ЦЕЛОСТНОГО ОБУЧЕНИЯ

КОМПЬЮТЕРНЫЙ СКОРОСТЕМЕР

СЛОИСТАЯ СТЕНА

ТЕХНОЛОГИЧЕСКАЯ ЛИНИЯ ПРОИЗВОДСТВА СТАЛИ

СИЛОВАЯ ПЕРЕДАЧА ТРАНСПОРТНОГО СРЕДСТВА С КОМБИНИРОВАННЫМ ДВИЖИТЕЛЕМ

INFORMATION RECORDING MEDIUM, INFORMATION REPRODUCING DEVICE, AND INFORMATION RECORDING DEVICE

IMAGE FORMING APPARATUS