EXPERIMENTAL STUDY ON GREEN DRILLING NICKEL-BASE SUPERALLOY WITH CARBIDE BIT (MT)
Jixie qiangdu, 2023 The carbide bit YG10 green drilled nickel-base superalloy GH4169 through dry drilling, air cooling and LCO2 cooling to explore the drilling performance and wear mechanism of nickel-base superalloy, with the purpose of improving the bit life. According to
LI Hui, GAO Feng, LI Yan
doaj
IODP Expeditions 309 and 312 drill an intact section of upper oceanic basement into gabbros [PDF]
, 2007 The Integrated Ocean Drilling Program's (IODP) Expeditions 309 and 312 successfully completed the first sampling of an intact section of upper oceanic crust, through lavas and the sheeted dikes into the uppermost gabbros.
S. R. Durand +51 more
core +1 more source
Technology assessment of vertical and horizontal air drilling potential in the United States. Final report [PDF]
, 1993 The objective of the research was to assess the potential for vertical, directional and horizontal air drilling in the United States and to evaluate the current technology used in air drilling.
Carden, R. S.
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Air delivery system for a direct push drilling swivel [PDF]
, 2023 A power swivel provides the rotational force to drill consolidated subsurface strata while an unrestricted airflow through the swivel and down a drill string remove cuttings from the borehole.
core
Experiences and Lessons Learned from Designing and Testing of an Air System and a Drilling Fluid Circulation System Adapted for Subglacial Bedrock Sampling in Antarctica [PDF]
Geoscientific Instrumentation, Methods and Data SystemsLiquid drilling is commonly utilized in sampling of subglacial bedrock in Antarctica. However, this drilling method has relatively low penetration rate compared with air drilling.
Y. Li +14 more
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استخدام غاز الآركون لتحسین عملیة تثقیب المعادن بلیزر النیدمیوم-یاك النبضي
Iraqi Journal of Physics, 2021 In this work, a pulsed Nd:YAG laser(out put energy=5J and pulse duration=300μsec) was used to perform drilling in samples of lead, stainless steel 304, brass, copper and aluminum.
سندس قحطان عبد الرزاق
doaj
The key technology of lubrication for screw motor in air directional drilling
Meikuang Anquan, 2023 When the air directional drilling technology is used for drilling construction, whether the screw motor can be well lubricated is a key factor affecting its life.
LI Kun
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Design and Experimental Verification of a Compact Robot for Large-Curvature Surface Drilling
ActuatorsAutomated precision drilling is essential for aircraft skin manufacturing, yet current robotic systems face dual challenges: chatter-induced inaccuracies in hole quality and limited access to confined spaces such as air inlets.
Shaolei Ren +6 more
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Advanced Engineering Materials, EarlyView.The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi +3 more
wiley +1 more source
Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology
Advanced Engineering Materials, EarlyView.We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham +7 more
wiley +1 more source