New Insert and Button Complex-Type Tapered Bits and G308, YJ2.1R Cemented Carbide for Rock Drilling Tools
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摘要: 对传统刃片状和球齿钎头实现了扬长避短的“飞龙”ϕ4 0、ϕ4 2 - 4P1C锥体连接复合钎头, 配合使用强度和耐磨性均佳的新型G30 8、YJ2.1R凿岩硬质合金, 其使用寿命为我国目前广泛流行的锒YG11C合金片的ϕ4 0、ϕ4 2一字形钎头的3倍以上, 是具有显著高效、低耗特点的换代产品.Abstract: Flying dragon" ϕ40 and ϕ42-4P1C insert and button complex type bits have developed the strong points and avoided the weak points of traditional ones bits. When they are used with new G308, YJ2.1R cemented carbide for rock drilling tools with extreme toughness, their service life is three times as much as that of the chisel bits set YG11C insert now used widely in China. At the same time, they maintain remarkable characteristics of high drilling speed and low consumption and will be likely to replace other bits.
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表 1 YJ系列合金物理机械性能
Table 1. Physical and mechanical property of YJ cemented carbide for rock drilling tools
表 2 G308, YJ2.1R合金的物理机械性能
Table 2. Physical and mechanical properties of G308 and YJ2.1R cemented carbide for rock drilling tools
表 3 “飞龙”ϕ40一字形钎头(YG11C) 和ϕ42-4P1C (YJ2.1R, G308边刃) 复合钎头的使用效果
Table 3. Working circumstances of "Flying dragon" ϕ40 (YG11C) chisel bits and ϕ42-4P1C (YJ2.1R, G308) insert and button complex-type bits
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