冲天炉炉前铁水成分和牌号级别的检验,是生产过程中稳定铸件质量的有效方法之一。过去普遍采用的是三角试样法和湿型圆柱试样法,我厂铸造车间是以三角试样法为主。三角试样法的原理是根据三角试样断面尖角的白口深度和灰口层的颜色以及晶粒的粗细等特征来估计铁水的化学成分,主要是估计碳、硅元素含量的高低,一般说来,检验的结果基本上是准确的。但 Cupola furnace before the hot metal composition and grade testing, is one of the effective methods of stabilizing the quality of castings in the production process. In the past commonly used is the triangular sample method and wet cylindrical sample method, I plant casting workshop is based on the triangular sample method. The principle of the triangular sample method is to estimate the chemical composition of molten iron based on the characteristics of the sharp white mouth and the color of the gray layer and the grain size of the triangular sample, mainly to estimate the contents of carbon and silicon, To put it, the test results are basically accurate. but