在锻造的热处理中,由于加热炉的巨大功能和较长的保温时间,在整个过程中,能源消耗在很长一段时间内是巨大的,如何在锻造热处理中节省能量是一个困难的问题。
所谓的“零绝缘”淬火是指向锻造加热,其表面和核心,以达到淬火加热温度,没有绝缘,立即淬灭冷却过程。根据传统的奥氏体理论,锻造必须在加热过程中具有很长的绝缘时间 austenitic.The present quenching and heating technology of forgings is produced under the guidance of this theory.Compared with the current quenching process, "zero heat preservation" quenching saves the time of heat preservation required by the homogenization of austenitic structure, not only can save 20%-30% of energy, improve the production efficiency 20%-30%, but also can reduce or eliminate the defects of oxidation, decarbonization, deformation and so在上面,有利于提高产品质量。
当将碳钢和低合金钢加热到AC1或AC2时,奥氏体的均质化过程和碳化物在珍珠岩中的溶解更快。当钢尺寸属于薄的部分范围时,加热时间的计算不需要考虑到零度绝缘的热度钢或厚度均匀的钢,例如,直径为零的均匀性。在空气炉中,与传统的生产过程(R = AD)相比,它的表面和芯的温度几乎可以忽略,因此可以忽略其均匀加热系数,可以降低近20%-25%的淬火加热时间。
The theoretical analysis and experimental results show that it is feasible to adopt "zero insulation" in quenching and normalizing heating of structural steel.In particular, 45, 45 mn2 carbon structural steel or single element alloy structural steel, the use of "zero insulation" process can ensure the mechanical properties of the requirements;45, 35CrMo, GCrl5 and other structural steel workpiece, the use of "zero insulation" heating than传统的加热可以节省大约50%的加热时间,总能源节省10%-15%,提高20%-30%的效率,同时“零绝缘”淬火过程有助于提高谷物,提高强度。
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时间时间:MAR-26-2020