硬质合金的价格很贵;不同种类的硬质合金,有着不同的特性和使用特点。如果把不同种类的硬质合金混放在一起,用错了就会造成浪费。在我厂中,过去就有这样的情况。我们曾经用火花鉴别法,和测量硬度、测量比重等办法来鉴别不同种类和不同牌号的硬质合金,但都很难得到正确的结果。最近我们学习了别厂的经验,利用水银来测定,效果比较好。水银的此 Cemented carbide is expensive; different types of cemented carbide have different characteristics and usage characteristics. If you mix different types of cemented carbide together, use the wrong will result in waste. In my factory, in the past there is such a situation. We have used the method of spark identification, and measuring hardness, measuring the proportion of ways to identify different types and different grades of cemented carbide, but are difficult to get the correct results. Recently, we learned the experience of other factories, the use of mercury to determine, the effect is better. This mercury