Results 41 to 50 of about 141,733 (202)
Journal of Materials Research and TechnologyMicro holes with high aspect ratios are essential for the cooling performance of aero-engines. Challenges persist in deep hole drilling due to the escalating stringent requirements in terms of hole diameters, aspect ratios, and 3D profiles. In this study,
Nan Zhang +4 more
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Bifurcations of Deep Hole Drilling Process
Procedia Engineering, 2017 Abstract Modern control of the cutting process can only be based on the thorough study of the dynamics of the technological system that allows revealing different mechanisms of the processes occurring in the cutting zone. The article shows the bifurcations inherent in the process of deep drilling that allows explaining a number of phenomena that ...
V.S. Bykador, Zh.E. Bykador (Bronzova)
openaire +1 more source
IEEE Access, 2019 Titanium alloy (Ti) has been widely used in aerospace industry due to excellent mechanical properties and the demands of Ti parts with a high length-to-diameter ratio and a large diameter are increasing.
Zhenyu Shao +6 more
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Small Diameter-Deep Hole Drilling for Hard-to-Machine Metals ― Drilling of ϕ1.0×400 mm for Ti6Al4V ―
Procedia Manufacturing, 2020 Small diameter-deep hole drilling is indispensable when several main parts of which airplane, automobile, machine tool and metal mould are manufactured.
Hidenori Inada, H. Inada, H. Yagishita
semanticscholar +1 more source
Application of Treatment for Deep Hole Drilling Debris in Gas-Rich Soft Coal Seams
Geofluids, 2023 Hole accidents occurring in the drilling process and borehole collapse encountered in gas production are obstacles standing in the way of high efficiency of gas drainage through the outburst-prone soft coal seams in China.
Yihui Niu +5 more
doaj +1 more source
, 2020 The relationship between the cutting speed, the feed, the resulting process forces during the BTA deep hole-drilling process and the functional properties in the bore sub-surface zone of AISI 4140 and AISI 304 L is analysed.
R. Schmidt +4 more
semanticscholar +1 more source
Temperature monitoring in the subsurface during single lip deep hole drilling
TM. Technisches Messen, 2020 The surface quality and the subsurface properties such as hardness, residual stresses and grain size of a drill hole are dependent on the cutting parameters of the single lip deep hole drilling process and therefore on the thermomechanical as-is state in
R. Wegert +3 more
semanticscholar +1 more source
Application of mouth section hole forming technique for directional drilling in Yangquan Mining Area
Meikuang Anquan, 2021 In the construction of long borehole in coal mine, the construction of the start of directional drilling is not paid enough attention. Especially for the installation of the ultra-deep casing(≥100 m), the casing is often not in place due to the hole ...
SUN Haoda, TANG Shengli, LIU Xusan
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Investigation of chip jamming in deep-hole drilling
, 2023 In this paper, we show the recent progress and first insights in modeling chip jamming in the deep-hole drilling process. Chip jamming is a significant problem when chips wrap around the tool, leading to marks on the borehole wall and an increased drilling torque causing sudden tool failure.
Baumann, Andreas, Eberhard, Peter
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Analysis of the functional properties in the bore sub-surface zone during BTA deep-hole drilling
, 2020 The BTA deep hole drilling process is analysed to determine the relationships between process-structure and residual stress as a function of surface conditioning during the machining process.
R. Schmidt +4 more
semanticscholar +1 more source