80t低频气保恒熔速电渣炉的技术特点及应用

为满足中国能源(电站、核电)、轴承、模具、航天等领域对高端锻件的需求,提升国产高端锻件的市场竞争力,实现中信重工在高洁净、高品质钢锭制造领域的又一新突破,在经过多年对国内外先进电渣装备调研、考察、论证的基础上,新增一台80t低频单电极气保全同轴恒熔速电渣炉。该电渣炉采用了低频电源、单电极、全同轴、微正压惰性气体保护、高精度称重、恒熔速、同相逆并联大电流短网、双炉头车、电网平衡等多项创新技术,可实现重熔过程计算机自动控制,具有设计独特、技术含量高、节能环保、安全可靠等优点。生产的电渣锭经过质量检测分析,电渣锭偏析程度小、纯净度高,质量达到较高水平。

Technical feature and application of 80 t ESR furnace with low-frequency,gas protection and constant melting rate

In order to meet the needs of the high-end forgings in the field such as the energy (power plants, nuclear power), the bearing, mould, and the aerospace in China, enhance the market competitiveness of the domestic high-end forgings, and achieve the further breakthroughs in the high purity, high quality ingot manufacturing field in CITIC Heavy Industries Co., Ltd., a new 80 t ESR furnace with the low-frequency, the single electrode, the gas protection, the coaxial high current loop, and the constant rate control system was developed based on many years of the study, investigations and expounding of the advanced ESR equipment at home and abroad.This ESR furnace applied many innovative techniques, such as the low-frequency power supply, the single-electrode, the all coaxial, the inert gas protection under the slight positive pressure, the high-precision weighing, the smart computerized control system, the coaxial arrangements of the high current loop, the double furnace heads, and the balance of power network, and can achieve the computer automatic control in the remelting process. Thus, it was characterized by the unique design, the high technical contents, the energy saving,the safety and reliability, and so on. The quality detection and analysis of the ESR ingot showed that the segregation was not obvious, chemical composition was high purity, and the quality reached a higher level.