Extractor head is the core of the vertical impact crusher (sand making machine), it is widely used in mining, sandstone, cement, metallurgy, water and electricity engineering and other industries, and sand making machine is the head of the main parts is the alloy to system sand machine, it is the key in the key, its wear resistance directly affect the overall operation effect of the whole machine. For these need to withstand high-speed impact, strong wear resistance of the industry, the use of cemented carbide material is the most ideal choice.