71 Result(s)
within
**zhi Li
Engineering
Media Management
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Article
Electrolyte component preference and surface integrity impact analysis for electrolytic plasma polishing of cobalt-chromium-molybdenum alloys
Cobalt-chromium-molybdenum alloy is an excellent cobalt-based alloy material used in the manufacturing of medical metal parts, which often requires a high-quality surface finish. In this paper, electrolytic pl...
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Article
Prediction and analysis of grinding force on grinding heads based on grain measurement statistics and single-grain grinding simulation
Reliable prediction of the grinding force is essential for improving the grinding efficiency and service life of the grinding head. To better optimize and control the grinding process of the grinding head, thi...
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Article
Energy efficiency improvement method of magnetic pulse welding based on auxiliary capacitance
To solve the problem of energy loss caused by low energy utilization rate in the process of magnetic pulse welding (MPW), this paper presents a method to recover the energy after the first half wave of pulse c...
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The optimization of residual stress in arc bridge Hastelloy X components fabricated by Laser Powder Bed Fusion
Laser Powder Bed Fusion (L-PBF) has attracted tremendous interest in various fields. However, detrimental residual stresses inevitably form inside the as-fabricated components due to the inherent complex therm...
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Article
Study on formability and deformation behavior of friction stir welding AA2024-7075 joint
Aluminum alloy tailor-welded blank (TWB) forming can achieve both material lightweight and structural lightweight, especially that dissimilar aluminum alloy TWB forming can better adapt to the different perfor...
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Analysis of energy transfer process in magnetic pulse welding and optimization of system efficiency
Magnetic pulse welding drives the workpiece to collide at high speed through non-contact force, which is suitable for welding dissimilar materials or materials with poor weldability. However, the low energy ut...
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Article
Defect detection of 3D printing surface based on geometric local domain features
The 3D printing process has advantages in the processing of complex parts, and its application is more and more extensive. However, the 3D printing process is still immature compared to traditional machining, ...
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Article
Study on wear simulation of diamond abrasive tool for rotary ultrasonic grinding
The aim of this study is to explore the wear mechanism of diamond grinding tools in rotary ultrasonic grinding process and complete the simulation study of micro wear state of diamond grinding tools in differe...
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A systematic study on three-roll continuous straightening process for LSAW pipes
Aiming at the low efficiency and unstable accuracy of the current mold-pressing straightening for LSAW pipes, a three-roll continuous straightening process is proposed in this study, which uses the roller stra...
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Article
Correction to: Optimization of high‑speed grinding parameters for anti‑fatigue performance of 20CrMnTi steel
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Numerical simulation and experimental investigation of bending deformation mechanism during post-rolling air cooling of AH36 L-beam
L-beam is a widely used structural steel. The study of the three-stage bending deformation mechanism of L-beam under non-uniform cooling conditions is of great significance to ensure the quality, improve the y...
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Article
Optimization of high-speed grinding parameters for anti-fatigue performance of 20CrMnTi steel
High-speed grinding technology is being applied to the precision machining of 20CrMnTi steel gears, shafts and bearings suffering from fatigue damage. The response surface methodology (RSM) was used as an opti...
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Article
Subsurface residual stress and damaged layer in high-speed grinding considering thermo-mechanical coupling influence
Subsurface residual stress and damaged layer play a vital role in determining the accuracy maintenance and fatigue performance of parts. Due to the advantages of machining quality and efficiency, high-speed gr...
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Article
Analysis of three-roller continuous and synchronous calibration process of straightness and ovality for large thin-walled pipes considering the weld
Large thin-walled pipes are commonly used in the field of oil and gas pipeline transmission. In general, the straightness and ovality of pipes cannot meet the industry standard. They are required to be calibra...
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Article
Effect of collapse and hump on thermomechanical behavior in high-power laser welding of 16-mm marine steel EH40
This paper concerns high-power laser welding of thick plates for the ship industry. Thermomechanical behavior during laser welding of 16-mm marine steel EH40 using 25-kW laser power was investigated by a 3D fi...
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Article
Sensitivity analysis of die structural and process parameters in porthole die extrusion of magnesium alloy tube using Taguchi method
Reasonable design and matching of die structures and process parameters play crucial roles in seam weld quality and variations in extrusion load and exit temperature during magnesium alloy porthole die extrusi...
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Article
Experiment investigation on machining characteristics of 7075 aluminium alloy with short electric arc milling
To improve the processing deformation, low efficiency, tool wear, surface burrs and other problems of aluminium alloy thin-walled parts, a study on 7075 aluminium alloy using short electric arc milling (SEAM) ...
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A novel protection-type porthole die for manufacturing multi-cavity and thin-walled extrusion profile: numerical simulation, optimization design, and experimental validation
The structure type of porthole die has a crucial impact on metal flow balance in die cavities, strength of seam weld, and die strength. At present, there was little industrial case for the application of prote...
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Article
Analysis of the operating conditions of pulse electric field–assisted EHD for sodium alginate printing using design of experiment approach
Electrohydrodynamic (EHD) printing is a novel printing technology with high printing resolution, making it suitable for applications such as tissue engineering and micro/nanomanufacturing. Inkjets from EHD fal...
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Article
Open AccessA review of microstructure evolution during ultrasonic additive manufacturing
Ultrasonic additive manufacturing (UAM) is a solid-state metal additive manufacturing process, with the combination of layer by layer ultrasonic seam welding and CNC machining. Due to the friction and deformat...
