Hao Tong
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View article: Breakthrough grouting diffusion mechanism of quick setting grout in high temperature fissured rock mass
Breakthrough grouting diffusion mechanism of quick setting grout in high temperature fissured rock mass Open
View article: Research on the ballistic resistance performance of PE composite materials
Research on the ballistic resistance performance of PE composite materials Open
This article investigates the penetration of 4.5g spherical fragments into PE composite materials of various thicknesses. Based on the results of ballistic tests and theoretical analysis, the empirical relationship between the ultimate pen…
View article: A Hybrid Process of Electrochemical Discharge Machining (ECDM) and High-Speed Milling (HSM) on Quartz Glass
A Hybrid Process of Electrochemical Discharge Machining (ECDM) and High-Speed Milling (HSM) on Quartz Glass Open
In traditional machining processes, surface microcracks are prone to generate due to the hardness and brittleness of quartz glass. A hybrid process of electrochemical discharge machining (ECDM) and high-speed milling (HSM) is proposed for …
View article: Pulsed power supply of Tr-RC and Tr-RLC topologies for improvement of micro electrical discharge machining
Pulsed power supply of Tr-RC and Tr-RLC topologies for improvement of micro electrical discharge machining Open
Pulsed power supply is one of the key technologies in micro-electrical discharge machining (micro-EDM), particularly in machining micro-holes with high aspect ratios. Through the disadvantageous waveform feature analysis of the controllabl…
View article: Design and fabrication of a sensors-integrated silicon electrode for gap status monitoring in micro electrochemical machining
Design and fabrication of a sensors-integrated silicon electrode for gap status monitoring in micro electrochemical machining Open
The monitoring of micro machining gap and the control of machining status within the gap have become bottlenecks in the research and development of micro electrochemical machining (ECM). General electrical signals are difficult to reflect …
View article: 管电极耦合激光电解复合加工的理论分析与实验研究
管电极耦合激光电解复合加工的理论分析与实验研究 Open
激光电解复合加工是将激光加工与电化学加工相结合的复合加工方法,可用于加工硬质导电材料,具有加快电化学溶解速率、避免重铸层和提高表面质量等优势。笔者提出了一种管电极耦合激光电解复合加工工艺,利用设计的管电极实现了激光能量与电化学能量在管电极内部的同轴传导以及在加工间隙处的可控耦合,所提工艺适用于高品质超大深径比小孔的加工。基于激光与电化学能量在加工间隙处的可控调节,提出了以激光加工为主导和以电化学加工为主导的耦合作用机制。通过分析激光辐照区温升对电解质电导率、电流密度、液相传…
View article: Micro ECDM process comparison using different tool feed methods of constant gravity and spring-force
Micro ECDM process comparison using different tool feed methods of constant gravity and spring-force Open
Quartz glass has been widely used in multiple frontier fields of science and technology owing to its excellent chemical and mechanical properties, such as optical communication, semiconductor, photovoltaic power, and aerospace. ECDM (elect…
View article: Correction method of servo feed trajectory in block divided EDM for diffusion shaped film cooling holes
Correction method of servo feed trajectory in block divided EDM for diffusion shaped film cooling holes Open
Diffusion shaped film cooling holes can improve cooling performance on turbine blades of aeroengines. The diffusion structures are difficult to machine due to the complicated shape, especially for the special materials such as single cryst…
View article: Research on temperature field of high-speed milling titanium alloy and machining parameters optimization
Research on temperature field of high-speed milling titanium alloy and machining parameters optimization Open
The high milling temperature in the high-speed milling process restricts the production efficiency and processing quality of titanium alloy thin-walled parts. Optimizing the processing parameters can control the temperature within a reason…
View article: The effect of tool wear on the damaged layer thickness and tool wear rate in ultra-precision turning of quartz glass
The effect of tool wear on the damaged layer thickness and tool wear rate in ultra-precision turning of quartz glass Open
Quartz glasses have been extensively used for many fields, such as semiconductor technology, optical instruments, inertial navigation and others. Ultra-precision turning with diamond tools can achieve high surface accuracy when processing …
View article: The flow behavior and constitutive equation of (Al<sub>3</sub>Ti+Al<sub>2</sub>O<sub>3</sub>)/2024Al composites during hot compression
The flow behavior and constitutive equation of (Al<sub>3</sub>Ti+Al<sub>2</sub>O<sub>3</sub>)/2024Al composites during hot compression Open
In this study, Al 3 Ti and nano-Al 2 O 3 co-reinforced aluminum matrix composites were prepared in situ autogenously using TiO 2 and Al alloys as raw materials. The high-temperature compression properties of the composites were tested at t…
View article: Reducing Tool-Tip Wear in Micro ECDM Scanning Process with Feedback Control of Flexible Contact Force
Reducing Tool-Tip Wear in Micro ECDM Scanning Process with Feedback Control of Flexible Contact Force Open
While machining the quartz glass in micro ECDM (electrochemical discharge machining) scanning process, the wear of tool electrode is adverse to machining accuracy. In this research, the developed spindle with servo feedback control of flex…
View article: Feasibility research on break-out detection using audio signal in drilling film cooling holes by EDM
Feasibility research on break-out detection using audio signal in drilling film cooling holes by EDM Open
The electrical discharge machining (EDM) process with inner and outer flush is effective for drilling film cooling holes on the blades of aeroengines and gas turbines. Due to the hollow structure of the blades, the break-out status needs t…
View article: Pulsed Power Supply with Ns-Pulsewidth for Micro EDM Based on Triode Avalanche Principle
Pulsed Power Supply with Ns-Pulsewidth for Micro EDM Based on Triode Avalanche Principle Open
In micro electro discharge machining (EDM), single pulse energy of pulsed power supply needs to be limited to a micro order of magnitude. One developing direction is to reduce the discharge pulse width for increasing discharging frequency.…
View article: Effect of Anisotropically-etched Silicon Electrode on Electrolytic Products Flow in Micro ECM
Effect of Anisotropically-etched Silicon Electrode on Electrolytic Products Flow in Micro ECM Open
Stray corrosion and electrolytic products deposition in the machining gap are major influence factors seriously restricting the application of micro electrochemical machining (ECM). Currently, one technical bottleneck is preparing thin and…
View article: A Block Divided EDM Process for Diffuser Shaped Film Cooling Holes
A Block Divided EDM Process for Diffuser Shaped Film Cooling Holes Open
Diffuser shaped film cooling holes are more and more used on the hot side blade of advanced aeroengines or gas turbines. The machining of diffuser holes is a key problem for its complicated shapes and Ni base superalloy. Currently die-sink…
View article: Selection and Optimization of Electrolyte for Micro Electrochemical Machining on Stainless Steel 304
Selection and Optimization of Electrolyte for Micro Electrochemical Machining on Stainless Steel 304 Open
During the process of micro electrochemical machining (Micro ECM) of metallic alloys, insoluble electrolytic products restrict the depth of micro holes with high aspect ratio. The selection and optimization of composite electrolyte are res…
View article: Thinning Process of Recast Layer in Hole Drilling and Trimming by EDM
Thinning Process of Recast Layer in Hole Drilling and Trimming by EDM Open
In order to reduce the recast layer thickness of film cooling holes on turbine blade, a novel thinning process of electrical discharge machining (EDM) is investigated. To avoid the contradiction between holes drilling speed and recast laye…