G308、YJ2.1R硬质合金在复合钎头上的应用

Application of G308 and YJ2.1R Cemented Carbines on Composite Bore Bits

介绍了G30 8、YJ2 .1R新型凿岩硬质合金的物理机械性能 ,并就镶嵌该 2种硬质合金的飞龙 4 0、 4 2 -4PIC锥体连接复合钎头 ,与我国目前广泛流行的镶YG11C硬质合金片的 4 0、4 2mm“一”

FLYING GRAGON'40 and 42-4PIC insert and button composite type bits develop the strong points and avoid the weak points of traditional insert and button bits. When it is used with new G308, YJ2.1R cemented carbide for rock drilling tools which are extremely toughness, its service life is three times as much as the chisel bits of YG11C insert which now are used widely in our country. It retains remarkable characteristics of high drilling speed and low consumption and will replace other bits.