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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图 1 “飞龙”ϕ32—ϕ89刃片状系列钎头(一字、三刃、十字、X形)
Fig. 1. "Flying dragon" chisel bits, 3-point bits, cross bits, X-bits (ϕ32—ϕ89)
图 3 “飞龙”ϕ36-ϕ127复合系列钎头
Fig. 3. "Flying dragon" insert and button complex-type bits (ϕ36-ϕ127)
图 4 G308和YJ2.1R合金的金相组织(1500×)
a.G308, WC平均晶粒度2.01 μm; b.YJ2.1R, WC平均晶粒度2.28 μm
Fig. 4. Metallograph of G308 and YJ2.1R cemented carbide for rock drilling tools
图 5 “飞龙”ϕ40一字形钎头(YG11C) 和ϕ42-4P1C (YJ2.1R, YG308边刃) 复合钎头工况比较
Fig. 5. Working circumstances of "Flying dragon" ϕ40 (YG11C) chisel bits and ϕ42-4P1C (YJ2.1R, RG308) insert and button complex-type bits
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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[1] Schröter K. WC-CO硬质合金[P]. 德国专利: 420698, 1923.Schröter K. WC-Co sintered carbide[P]. Germany Patent: 420698, 1923. [2] 吉田邦彦. 硬质合金工具[M]. 张超凡, 译. 北京: 冶金工业出版社, 1981.254-255.Jitianbangyan. Cemented carbide tools[M]. Translated by ZHANG C F. Beijing: Metallurgical Industry Publishing House, 1981. [3] 张国榉, 张汉斌. 硬质合金复合片齿钎具[M]. 武汉: 中国地质大学出版社, 1997.ZHANG G J, ZHANG H B. Insert and button complextype rock drilling tools[M]. Wuhan: China University of Geosciences Press, 1997. [4] Q/OHPB001-91. YJ系列矿山凿岩硬质合金企业标准[S], 1991.Q/OHPB001-91. Standard of YJ cemented carbide inserts for mining rock bits[S], 1991 -
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