随着对地球的自然资源需求的不断增长,勘探公司、开采部门及其它单位都面临施工作业的成本不断上升以及必须解决在愈加困难的岩层下开辟新的贮量问题。技术和经济方面的成功主要取决于凿岩机具的穿孔速度以及在长期的性能可靠。在材料技术和 As the Earth’s natural resource needs continue to grow, exploration companies, mining units and other units are faced with rising costs of construction operations and the need to address the issue of opening up new reserves under increasingly difficult rock formations. Technical and economic success depends mainly on the perforation speed of the rock drilling equipment as well as its long-term reliability. In material technology and