A5060649301- Erosion and Abrasive Machining
- Drilling and Well Engineering
- Hydraulic Fracturing and Reservoir Analysis
- High-Velocity Impact and Material Behavior
- Metallurgy and Material Forming
- Metal Alloys Wear and Properties
- Tunneling and Rock Mechanics
- Oil and Gas Production Techniques
- Advanced machining processes and optimization
- Microstructure and Mechanical Properties of Steels
- Hydrocarbon exploration and reservoir analysis
- Microstructure and mechanical properties
- Advanced Machining and Optimization Techniques
- Nuclear Engineering Thermal-Hydraulics
- Combustion and Detonation Processes
- Electromagnetic Launch and Propulsion Technology
- Surface Treatment and Residual Stress
- Coal Properties and Utilization
- Powder Metallurgy Techniques and Materials
- Advanced Surface Polishing Techniques
- Mineral Processing and Grinding
- Metal Forming Simulation Techniques
- Geophysical Methods and Applications
Henan University of Science and Technology
2023-2025
Chongqing University
2019-2023
As a novel type of pulsed water jet (PWJ), the pressurized (PPWJ) shows great potential in field rock fragmentation engineering. In this study, macro and micro morphologies erosion craters on different targets (sandstone granite) were measured to investigate characteristics PPWJ. The results show that processes granite sandstone are significantly from each other. surface exhibit conical shape, with manifesting as successive exfoliation mineral particles; main destruction pattern is fracture...
To obtain the distribution law of residual stress 42CrMo steel processed by ultrasonic rolling extrusion process (UREP), according to characteristics material treated process, quasi-static experiment and dynamic are carried out, improved Johnson-Cook model was proposed. Based on constitutive equation, finite element method were out. The results show that simulation value experimental after have good consistency, with increase static pressure amplitude, increases, rotational speed feed speed,...
The exploitation of deep resources and energy needs to break hard rock. Aiming at the problem rock fragmentation, this paper proposes a variable cross-section squeezing pulsed water jet technology (SPWJ). SPWJ was generated under pump pressures 5.2, 6.8, 8.5, 10, 11.9, 13.8 MPa carry out erosion experiments. Features such as spalling area, depth, volume loss, decomposition per unit inlet pressure are used characterize performance SPWJ. results show that can effectively crush granite low...
Abstract High-pressure pulsed water jet technology has considerable development potential in the field of rock fragmentation. To overcome shortcomings existing jets, a self-supercharging (SSPWJ) generation method is proposed, which based on theory and principle hydraulic boosting. The proposed changes flow direction fluid medium through valve core to make piston reciprocate cylinder relies effective area difference between front rear chambers stroke stage realize organic combination “pulse”...
Pulsed water jet technology has broad application prospects in the field of rock breaking. The pressurized pulsed (PPWJ) is a new type that offers high-amplitude pressurization, variable pulse pressure and frequency, high energy usage rate. To achieve more destructive powerful jet, dynamic simulation model device was established by using AMESim software (v1400) based on operational principle PPWJs, validated against experimental results. relationships between key structural parameters PPWJ...
To improve the efficiency of hard rock breaking by a pulsed water jet (PWJ), hydraulically controlled piston-pressurized PWJ (HCPPPWJ) device has been developed, which large amplitude pressurization could be realized through motion coupling piston and valve core inside without requiring additional control or ultra-high-pressure components. Under continuous injection low-pressure hydraulic oil, stable effect controllable pulse pressure frequency. The varies periodically with alternation high...
Shale gas loss by leakage directly affects the accurate measurement of shale content during drilling and coring. To accurately calculate loss, in combination with actual situation coring, considering influence factors main occurrence state (free adsorption state), means treating three stages well core removal, ground exposure, water bath heating desorption as a process that changes confining pressure, an indoor simulation experiment method was independently designed to determine loss. Two...
Abstract High-pressure pulsed water jet technology has high development potential in the field of rock fragmentation. Technical bottlenecks such as difficulty pressurization and inconvenient frequency adjustment for existing types jets, a self-supercharging generation method is proposed based on theory principle hydraulic boosting, which changes flow direction fluid medium through valve core to make piston reciprocate cylinder, relies effective area difference between front rear chambers...