With the upgrading of the single equipment, the metallurgical characteristic of modern cupola - induction furnace duplex melting is variable.
随着单体设备的不断更新升级，现代冲天炉—感应炉双联熔炼的冶金特性也发生了很大的变化。
2
The liningless cupola is featured by that the furnace shaft, except the hearth section, is not lined but substituted by a heat-exchanging jacket (HEJ)which is made of heat-resistant metal.
无炉衬冲天炉的特点是炉体除炉缸部分外，不用炉衬，代之以耐热金属材料制成的炉胆；
3
The progress of cupola and induction furnace melting techniques of cast iron in Japan was introduced.