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Development of Fine-Grained High-Carbon Steel in High Reduction Low Temperature Rolling

机译：高还原低温轧制细晶粒高碳钢的研制

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After blanking and bending to form parts with the desired shape, high-carbon steels are quenched and tempered to produce various machine parts. Thus, the spheroidization, formability and hardenability are very important properties for high-carbon steels. Thermo-Mechanical control Process of rolling has been widely used in the steel industry. However, it is difficult to apply this process to high-carbon steels because of the heavy rolling load. Thus, fine-grained high-carbon hot strips were developed through high-reduction and low-temperature rolling by using single roll rolling mills with different diameters and laminar flow cooling devices in the finishing train, the grain size of these steels was about 3 microns. Also developed annealed strips with fine homogeneously dispersed spheroidal cementite had many excellent characteristics. For example, burring formability investigated by the hole-expanding and surface hardness evaluated by laser hardening of the developed high-carbon annealed steels, were excellent.
机译：在冲裁和弯曲以形成具有所需形状的零件后，对高碳钢进行淬火和回火以生产各种机械零件。因此，球化，可成形性和淬透性是高碳钢非常重要的性能。轧制的热机械控制过程已在钢铁工业中广泛使用。但是，由于高的轧制负荷，难以将该方法应用于高碳钢。因此，在精轧机列中使用不同直径的单辊轧机和层流冷却装置通过高还原度和低温轧制开发了细晶粒高碳热轧带钢，这些钢的晶粒尺寸约为3微米。 。还开发的具有均匀分散的细球形渗碳体的退火带材具有许多优异的特性。例如，通过发达的高碳退火钢的扩孔研究的毛刺成形性和通过激光硬化评估的表面硬度是优异的。

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