冲天炉炉前用试块检验普通灰铸铁铁水,是一项快速鉴定铁水化学成份的有效方法。一般采用两种工艺试样——圆形试棒和三角试块。圆形试棒是硬模铸成,需增加一道硬模预热工序,而预热温度的高低影响检查的正确性,且检验过程时间较长。虽然从圆形试棒顶 The use of test blocks in the front of the cupola furnace to inspect ordinary gray cast iron hot metal is an effective way to quickly identify the chemical composition of hot metal. Generally use two kinds of technology samples - round test bar and triangle test block. Round test bar is hard cast, need to add a hard mold preheating process, and the level of the preheating temperature affect the correctness of the inspection, and the inspection process takes a long time. Although from the top of the round test bar