Abstract: In order to control structure non-uniformity and carbide segregation of high speed steel ingot, ingots of small size are usually produced by ESR, but its production efficiency is low, the rate of finished product is low. Long electrosiag billets with small specifications for ESR fest Withdrawing can improve production efficiency and finished product rate, we made 160 mm x 160 mm square billet of M2 high speed steel using T-type conductive crystallizer for ESR fast Withdrawing with different melting speed and forged and rolled, through the detection and analysis of the composition, low magnification, cast structure and carbide irregularity of the electroslag billet and the size of large particles of carbide, mean¬while ,it is compared and analyzed with Φ 220 mm ingot rolling for conventional ESR, analysis shows that electroslag billet for ESR fast Withdrawing with 400 kg/h remelting speed has stable composition and good macrostructure, the carbide variability and carbide dimensions of large particles of rolled materials produced are similar to those Φ 220 ingot rolling materials for conventional ESR, and the production efficiency and the rate of finished products have been improved obviously.

Key words: ESR Fast Withdrawing, T - Type Conductive Crystallizer, High Speed Steel Carbide, Production Efficiency, Yield

摘要： 为控制高速钢钢锭组织的不均匀性和碳化物偏析问题,常采用电渣重熔生产小规格钢锭,但其生产效率低、成材率低。采用快速抽锭电渣重熔小规格长电渣坯可提高生产效率和成材率,利用T型导电结晶器快速抽锭电渣炉以不同熔速重熔M2高速钢160 mm×160 mm方长坯并锻轧成材,通过对电渣坯成分、低倍、铸态组织及轧材碳化物不均度、大颗粒碳化物尺寸检测分析,并与常规电渣重熔Φ220 mm锭轧材进行对比,分析表明快速抽锭电渣炉以400 kg/h熔速重熔的电渣坯成分稳定、低倍组织良好,生产的轧材碳化物不均度、大颗粒碳化物尺寸与常规电渣重熔Φ220 mm锭轧材相当,而生产效率、成材率有明显提高。