铁水在浇注前,其材质(牌号)的炉前检验方法有:1.快速分析或光谱分析,取样测定碳、硅、锰含量;2.热分析法(即碳当量C_E的测定);3.工艺试验法(即三角片或圆棒试样的白口分析);4.铁水表面花纹鉴别。上述3、4两种方法是多数工厂普遍采用的常规方法。但要观察、分析、判断准确,需要有一定的经验,现对这两种方法的实践认识,总结如下,供参考。一、三角试样白口的控制 Hot metal before pouring, the material (grade) of the furnace test methods are: 1. Rapid analysis or spectral analysis, sampling determination of carbon, silicon, manganese content; 2. Thermal analysis (ie carbon equivalent C_E determination); Process test method (ie triangle or round bar sample white analysis); 4 hot metal surface pattern identification. The above two methods 3,4 are the most common method used by most factories. But to observe, analyze, judge accurately, you need to have some experience, the practice of these two methods are now summarized below, for reference. First, the white triangle sample control