64 Result(s)
within
**ng-hua Li
Materials Engineering
Materials Science, general
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Article
The characterization of high-performance PAN-based carbon fibers developed by continuous carbonization and air oxidation
The properties of four kinds of Type II carbon fibers, which had been precarbonized at 300 °C, 400 °C, 500 °C, and 600 °C, respectively, during two-stage continuous carbonization, were measured after being air...
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Article
Fabrication of mesoporous CdS nanorods by chemical etching
One-dimensional CdS nanocrystallites were used as precursors for preparation of mesoporous CdS nanorods through an ion-exchange process at room temperature. The results from x-ray photoelectron spectroscopy, t...
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Article
Liquid-Phase Siliconizing and Aluminizing at the Surface of a Ti3Al-Based Alloy and Improvement in Oxidation Resistance
A simple and inexpensive method to modify the surface of a Ti3Al-based alloy, liquid-phase siliconizing and aluminizing by an Al-Si alloy, has been proposed. The surface modification at 1013 K for 10 min using Al...
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Article
Heat Treatment of Die and Mould Oriented Concurrent Design
Many disadvantages exist in the traditional die design method which belongs to serial pattern. It is well known that heat treatment is highly important to the dies. A new idea of concurrent design for heat tre...
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Article
Electromagnetic Dam in Twin-Roll Strip Caster
The electromagnetic dam (EMD) in twin-roll strip caster was simulated with FEM. The results show that the direction and magnitude of Lorentz force distributing in the EMD changed in a period. The negative part...
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Article
Behavior of Transversal Crack on Slab Corner During V-H Rolling Process
The behavior of transversal cracks on the surface of the slab corner during vertical and horizontal (V-H) rolling process with flat vertical roll and groove vertical roll was simulated by explicit dynamic fini...
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Article
Analysis of Temperature Field and Thermal Crown of Roll During Hot Rolling by Simplified FEM
Thermal crown of roll is an important factor, which affects strip profile. It is necessary to analyze the temperature field and thermal crown of roll for hot strip mill. A new simplified finite element method ...
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Article
Improvement on Conventional Load Distribution Algorithm in Hot Tandem Mills
Load distribution is a key technology in strip hot rolling process, which influences the coil’s microstructure and performance. Currently, Newton-Raphson algorithm is applied to load distribution of hot tandem...
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Article
Influence of Dog-Bone Apex on Shape During Slab Horizontal Rolling Process
The deformation of slab with dog-bone shape during the horizontal rolling process was simulated using FEM, and the influences of apical dislocation of dog-bone on the slab spread as well as the minimum crop en...
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Article
High Nitrogen Austenitic Stainless Steels Manufactured by Nitrogen Gas Alloying and Adding Nitrided Ferroalloys
A simple and feasible method for the production of high nitrogen austenitic stainless steels involves nitrogen gas alloying and adding nitrided ferroalloys under normal atmospheric conditions. Alloying by nitr...
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Article
FEM Analysis of Rolling Pressure Along Strip Width in Cold Rolling Process
Using 3-D elastic-plastic FEM, the cold strip rolling process in a 4-high mill was simulated. The elastic deformation of rolls, the plastic deformation of the strip, and the pressure between the work roll and ...
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Article
Shape Setup System for 1700 Hot Strip Mill
Shape setup (SSU) system is the core technology for hot strip mill (HSM). A precise SSU system was used to improve the strip quality for HSM. The function of SSU, setup, and feedback was introduced. The main m...
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Article
Numerical Simulation of Temperature Field and Thermal Stress Field of Work Roll During Hot Strip Rolling
Based on the thermal conduction equations, the threedimensional (3D) temperature field of a work roll was investigated using finite element method (FEM). The variations in the surface temperature of the work r...
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Article
Numerical Study on Welding Line Behavior of Deep Drawing TWB Process
The FEM technology is used to analyze the welding line movement behavior of deep drawing TWB sheet with different thickness. It is found that high stress fields are concentrated around the welding line and lar...
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Article
Affecting Factors and Improving Measures for Converter Gas Recovery
To change the undesirable present situation of recovering and using converter gas in steel plants in China, the basic approaches to improving the converter gas recovery rate were analyzed theoretically along w...
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Article
Control of interfacial reactions and strength of the SiC/SiC joints brazed with newly-developed Co-based brazing alloy
Co-based brazing alloy CoFeNi(Si, B)CrTi was designed for SiC joining. The periodic banded reaction structure that existed at the interface between SiC and the traditional Ni-based or Co-based braze has been e...
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Article
Magnetic Properties and Kinetics Parameters of Electroless Magnetic Loss CoFeB Films
Electroless CoFeB films with good soft magnetic properties were fabricated on polyester plastic substrate from sodium tartarate as a complexing agent. The plating rate of electroless CoFeB films is a function ...
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Article
Optimized O/Si Composition Ratio for Enhancing Si Nanocrystal Based Luminescence in Si-rich SiOx Grown by PECVD with Argon Diluted SiH4
Effect of O/Si composition ratio on near-infrared photoluminescence (PL) of PECVD grown Si-rich SiOx after 1100°C annealing are analyzed by Rutherford backscattering (RBS) and Fourier-transformed infrared spectro...
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Article
New Method for Evaluating Thermal Wear of Rolls in Rolling Process
A new method was developed by a thermal wear machine to evaluate the thermal wear of rolls in steel rolling process. The steel strip and rolls were simulated by upper and lower heating disks. The upper heating...
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Article
Blue and Yellow Electroluminescence of MOSLED Made on Si-rich SiOx Film with Detuning Buried Si Nanoclusters Size
We have demonstrated the blue and yellow electroluminescence of MOSLEDs made on Si-rich SiOx film with buried Si nanoclusters of different sizes. The situation of dehydrogenation of Si nanocrystals within the ...
