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1 凿岩钻头获全致密类最佳制品奖。由Ceracon Inc制造,用户是Numa Tool Co·用于凿钻水井。钻头的使用条件很苛刻,每min冲击岩石1200次,冲程为1/8英寸。用户要求不出现任何“井下”问题,因此,钻头应有很高的力学性能。抗拉强度为190ksi,硬度为HRC48～50,密度为7.85～7.86g/cm~2。材料选用Quebec Metal Products Ltd(加拿大)生产的4601钢粉(1.8Ni-0.55Mo-0.4C-
1 rock drill bit by the best quality products Award. Manufactured by Ceracon Inc., user Numa Tool Co · Used to drill wells. The conditions of use of the bit are very harsh, impacting the rock 1200 times per min, the stroke is 1/8 inch. Users do not require any “downhole” problems, so drill bits should have high mechanical properties. Tensile strength of 190ksi, hardness of HRC48 ~ 50, a density of 7.85 ~ 7.86g / cm ~ 2. Material selection Quebec Metal Products Ltd (Canada) produced 4601 steel (1.8Ni-0.55Mo-0.4C-