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NEW STEEL FOR FABRICATION OF THE FORGED FORMING ROLLS

机译：用于制造锻造成型辊的新型钢

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The article present high-carbon hypereutectoid steel for the production of hot rolling forged rolls. The steel contains 1.2 - 1.4 % carbon, carbide forming alloying elements Cr, Mo, V and Nb to improve the wear resistance of the roll, and Ni to increase the hardenability. Hot ductility of the steel has been investigated considering segregation of chemical elements in ingots weighing up to 20 tons. It has been found that the possesses steel presented ductility sufficient for hot deformation (forging) with small single compressions. The temperature range of deformation ingot has been found: finite temperature deformation should not be below 900 °C, the temperature of the forging - 1150 °C. The critical points of steel have been determined. The increased hardness of the hot rolling rolls of the steel (250 - 350 HB) should be provided by the normalization with temper. The steel hardenability has been determined and shown that the introduction of Nb in steel increases the depth of the hardened layer. According to its properties steel C1.4Cr2NiMoWB can be recommended for manufacturing solid-forged rolls and bandages for composite rolls of hot rolling process from ingots weighing up to 10 tons.
机译：该制品呈现高碳过度切开钢，用于生产热轧锻造辊。钢含有1.2-1.4％的碳，碳化物形成合金元素Cr，Mo，V和Nb，以提高辊的耐磨性，Ni以增加淬透性。考虑到重量高达20吨的锭的化学元素的分离，研究了钢的热延展性。已经发现，具有小单个压缩的热变形（锻造）具有足以进行延展性的具有足够的延展性。发现了变形锭的温度范围：有限温度变形不应低于900°C，锻造温度 - 1150℃。已经确定了钢的关键点。钢的热轧辊（250-350 Hb）的增加的硬度应通过发脾气来提供。已经确定钢淬透性并表明，钢中的Nb引入增加了硬化层的深度。根据其特性，钢铁C1.4CR2NimowB可以推荐用于制造固体锻造辊和绷带，用于从重10吨的锭锭的热轧工艺复合辊。

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