摘要
通过工业试验研究了铁铬铝合金(/%:0.024C,0.26Si,0.17Mn,20.1Cr,5.3Al,0.05RE)200 kg电渣重熔结晶器的结构、冷却强度、电压电流、缓冷方式等对内裂纹的影响。结果表明,通过将原结晶器底水箱改为间接水冷装置,提高进水量,将电流、电压分别由原来的5 400 A和55 V降至5 000 A和50 V以降低熔池温度,采用膨胀珍珠岩覆盖剂保温均热等措施,使电渣锭低倍组织致密均匀,无内裂纹。
The effect of structure of electroslag remehing （ESR） mold, cooling intensity, voltage, current and slow- cooling method on internal cracks of 200 kg ESR ingot of Fe-Cr-A1 alloy （/% ： 0. 024C, 0. 26Si, 0. 17Mn, 20. ICr, 5.3A1, 0. 05RE） has been studied by pilot-scale production. Results show that with the measures including modifying orig- inal mold bottom water box to indirect water cooling unit, increasing inlet water rate, decreasing voltage and current respec- tively from original 5 400 A and 55 V to 5 000 A and 50 V to lower bath temperature, and using expanding perlite shielding material for holding and soaking, the macrostructure of ESR ingot is compact and uniform, and there is no internal cracks.
出处
《特殊钢》
北大核心
2014年第1期40-42,共3页
Special Steel
基金
国家自然科学基金资助(51304016)
关键词
铁铬铝合金
电渣重熔
内裂纹
工艺措施
Fe-Cr-Al Alloy, Electroslag Remehing, Internal Cracks, Process Measures
