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Article
Ex planta phytoremediation of trichlorophenol and phenolic allelochemicals via an engineered secretory laccase
Plant roots release a range of enzymes capable of degrading chemical compounds in their immediate vicinity1,2. We present a system of phytoremediation ex planta based on the overexpression of one such enzyme, a s...
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Article
Purification and Characterization of an Extracellular Cold-Active Serine Protease from the Psychrophilic Bacterium Colwellia sp. NJ341
Colwellia sp. NJ341, isolated from Antarctic sea ice, secreted a cold-active serine protease. The purified protease had an apparent Mr of 60 kDa by SDS-PAGE and MALDI-TOF MS. It was active from pH 5–12 with maxim...
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Article
Optimization and Model of Laminar Cooling Control System for Hot Strip Mills
The structure of laminar cooling control system for hot rolling was introduced and the control mode, cooling strategy, segment tracking and model recalculation were analyzed. The parameters of air/water coolin...
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Article
Microstructure and Mechanical Properties of Electromagnetic Centrifugal Cast 1Cr25Ni20Si2 Tube Blank
1Cr25Ni20Si2 tube blank centrifugally cast in a steady magnetic field was investigated. The results indicated that the solidification structure and the mechanical properties of the blank can be improved remark...
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Article
Dynamic Recrystallization Behavior in Mn-Cr Gear Steel
Using a Gleeble 1500 hot simulator, the dynamic recrystallization (DRX) behavior of Mn-Cr type gear steel was investigated. The experimental results show that the Mn-Cr gear steel exhibits a typical DRX behavi...
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Article
Effects of Deformation on Bainite Transformation During Continuous Cooling of Low Carbon Steels
Hot deformation experiments were carried out on Gleeble 1500 thermo-mechanical simulator. The bainite transformation after deformation was investigated by optical microstructure analysis. The results indicated...
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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
Bainite Transformation Under Continuous Cooling of Nb-Microalloyed Low Carbon Steel
Utilizing Gleeble-1500 thermomechanical simulator, the influences of hot deformation parameters on continuous cooling bainite transformation in Nb-microalloyed low carbon steel were investigated. The results i...
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Article
Development of Hot Dip Galvanized Steel Strip and Its Application in Automobile Industry
Hot dip galvanized product is widely used in architecture, household electric appliance, ship vehicle, vessel, mechano-electronic device and other fields including clothing, food, housing, and travel. The hist...
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Article
Progress in Modeling of Phase Transformation Kinetics
Several methods representing the evolution of microstructure were introduced, which include the Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation, Internal State Variable (ISV) framework, Koistinen-Marburger (K-M...
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Article
Austenite Recrystallization and Controlled Rolling of Low Carbon Steels
The dynamic recrystallization and static recrystallization in a low carbon steel were investigated through single-pass and double-pass experiments. The results indicate that as the deformation temperature incr...
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Article
Optimization of Holding Temperature and Holding Thickness for Controlled Rolling on Plate Mill
Holding temperature and holding thickness are main parameters for two-phase controlled rolling on plate mill. The optimization of holding temperature and holding thickness for pass schedule calculation of two-...
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Article
Application of Approximation Full-Load Distribution Method to Pass Scheduling on Plate Mill With Hydro-Bending System
The influence of positive bending system on plate crown control was researched. The approximation fullload distribution method for pass scheduling was put forward. This method can not only make full use of the...
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Article
Calculation of Taper Rolling Time in Plan View Pattern Control Process
The forward slip model with adhesion was used to derive the formula of calculating taper rolling time. The relation between the rolling time and the taper length and the relation between the rolling time and t...
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Article
Fatigue Properties of Supersteel for Automobiles
The fatigue properties of 400 MPa grade supersteel, plain low carbon steel SS400 and microalloyed steel Q340TM were investigated through tensile-compression fatigue experiment with R = −1. The results indicate th...
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Article
Thermodynamic Calculation of Carbide Precipitate in Niobium Microalloyed Steels
On the basis of regular solution sublattice model, thermodynamic equilibrium of austenite/carbide in Fe-Nb-C ternary system was investigated. The equilibrium volume fraction, chemical driving force of carbide ...
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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
Three-Dimensional Analysis of Rolling by Twin Shear Stress Yield Criterion
Using the twin shear stress yield criterion, the surface integral of the co-line vectors, and the integration depending on upper limit, Kobayashi’s three-dimensional velocity field of rolling was analyzed and ...
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Article
Effect of Processing Condition on Texture and Drawability of a Ferritic Rolled and Annealed Interstitial-Free Steel
The processing conditions of the texture formation and deep drawability of a Ti-IF steel strip hot-rolled in ferritic region and subsequently annealed were investigated. The r-value increases with the decrease of...
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Article
Interaction of elementary waves of scalar conservation laws with discontinuous flux function
In this paper, the Riemann solutions for scalar conservation laws with discontinuous flux function were constructed. The interactions of elementary waves of the conservation laws were concerned, and the numeri...
