In metallurgical industry and in machine building industry, any steel making process (converter or electricsteelfurnace) needs to control the variation in molten steel composition and temperature.
冶金和机器制造工业的炼钢(转炉、电炉)过程中，需要控制钢水温度的变化。
2
To take away the refining part of the steel making cycle off an electric arc furnace, which is discussed elsewhere, is an excellent start.
把炼钢周期中的精炼阶段从电弧炉中移走（这个问题将在别处加以讨论），是一个良好的开端。
3
Since the property requirements are so special, tool steel are usually melted in electricfurnace using careful metallurgical quality control.