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The machine realized the function of positioning and calibration by using Siemens MM440 and absolute encoder. It accomplished the structured program and optimized HMI screen, the forming machine can produce all kinds of different diameter welded pipes without changing rollers.

With the introduction and wide applications of laser guided AGV in the tobacco corporation, the logistics automation level is increased greatly. But with the introduction of flexible manufacturing system, the production line of the tobacco corporation become more complicate, the material requirement become more flexible, so that the driving stability has brought great challenges of AGV. In the system of more AGV compositing, there will been bought the conflict between multiple vehicles AGV. How can locate the position of each AGV instantly, and estimate and dispose the conflict during the running process in time, it has been the solve direction for team. This paper is researched based on the AGV’s system of KunChuan, bring forward a monitoring system of AGVS. The results shown that the actual trajectory is fully consistent with the planned through running, and achieving the prospective effect.

This paper chooses the listed companies in cultural media industry as the subject, selects 23 listed companies as the sample, utilizes the finical data during the period of 2002 and 2011 and employs the principal component analysis and linear regression methods to carry on an empirical research on the relationship between capital structure and profitability of the listed companies in cultural media industry. The research results show that the asset-liability ratio and profitability have significantly negative correlated relationship, and shareholders equity ratio has significantly positive correlated relationship with profitability, however, the relationship between liquidity ratios and profitability is not significant. Therefore, optimizing the capital structure can be recognized as an important way to improve the capability of listed companies in cultural media industry.

A new alternating segment explicit-implicit and alternating segment implicit-explicit methods for solving the payment of dividend Black-Scholes equation are presented. These new methods have several advantages such as: good parallelism, unconditional stability, convergence and better accuracy. Numerical experiments show that the methods improve the calculation speed greatly.

Based on Statistical Energy Analysis (SEA), this paper studies the influence of fans arrangement to offshore platform noise, analyses the noise distributions of typical offshore platform areas when the inlet fans are arranged in the Main Engine Room and out of it. On this basis, with the aim of optimal noise in platform, this paper carries out optimal design of the fan arrangement and shows it. The study shows that: the noise influence of inlet and exhaust fans arrangement to Main engine room is relatively small. But it is relatively large to the Public area and the Living area around the Main Engine Room. From the view of platform noise control, the inlet and exhaust fans should be arranged in the Main Engine Room.

Black-Scholes equation is the basic equation of option pricing in financial mathematics, it is important to study its numerical solution in financial market. This paper constructs a new kind of high order accuracy numerical algorithm (Three-layer difference scheme) for Black-Scholes equation with payment of dividend. Secondly, it gives the convergence of scheme. Thirdly, the stability and error estimates are analyzed. Finally, the numerical examples show the feasibility and effectiveness of the scheme. The truncation error of Three-layer scheme is little worse than CrankNicolson scheme and computational cost is little better than Crank-Nicoslon scheme. Therefore, the scheme is better suitable for applying to calculate the option pricing in the demanding high level of instantaneity. Keywords-component; Black-Scholes equation; Three-layer difference scheme; calculation stability; error estimate; numerical example

The characteristics of dynamic and static component of the cutting force signal were analyzed when the coated tool was used to cut gray cast iron. It is found that the whole and local of dynamic cutting force signal has self-similarity. Then the dynamic fractal dimension D was extracted by means of fractal theory, and the feature quantity M was extracted from the static cutting force signal. Research shows that the dynamic fractal dimension D of cutting force signal and static characteristic quantity M are varied with the cutting time. Their varying laws can be used to monitor the wear condition of coated tool effectively.

The cut tobacco transporting is the absolutely necessarily important tache, whether the transportation process stability is a direct impact on production quality and manufacturing standards. The wind system is adopted by most tobacco companies because of it caused least disruptive of the cut tobacco structure and the pipe network layout of system is flexible, but the wind system is greater influence by itself, different control methods are caused greater difference of process indicators, for example essence and spice ingredients, moisture proportion and smoke flavor. Based on the above reasons, so we need to design the control method of wind system necessarily, in addition we must checkout the control accuracy opportunely, so that it is satisfied by the actual working conditions.

Unexploded Subprojectiles is a serious and prevalent environmental problem currently facing us. In this paper, the safety of Unexploded Subprojectiles detection and the detection objective and detection environment were analyzed. the Unexploded Subprojectiles detection experiment was studied. The research indicates: there is a certain effect to detect Unexploded Subprojectiles where is in the non-magnetism soil and under shallow earth. But there is big influence in depth of hidden objective, and the dimension of real objective cant be reflected.

In this paper, the generation theory of straight bevel gears with is studied. The movements of machine tool are first analyzed. Based on the meshing theory and differential geometry principle, the mathematic model for the generation of gears is established and the tooth surface equation of straight bevel gears is derived. Computerized simulation of generation process has been done, which lay theoretical foundation for rebuilding of machine tool.

The forecasting of gas demand has become one of the major research fields in gas engineering. Gas demand possesses dual property of increasement and seasonal fluctuation simultaneously, so it makes gas demand variation possess complex nonlinear combined character. Accurately forecast were essential part of an efficient gas system planning and operation. In this paper, a new forecasting model which named regression combined neural network is put forward. In this approach we used regression to model the trend and used neural network for calculating predicted values and errors. Taking the advantages of regression analysis and artificial neural network, the model improves the forecasting accuracy of power demand obviously. The results indicate that the model is effective and feasible for load forecasting.

Sandwich panels with a V-type corrugated core are developed to investigate their crushing performance under lateral load based on the numerical method. The validity and feasibility of the calculation method is qualified by comparing numerical results with experiment results. Based on that, finite element software is applied to analyze the effects of structural parameters on the crushing performance of sandwich structure. Then inspecific energy increases as the core thickness and inclination angle are increased, but it will induce as the core height is raised. Additionally, the average crushing strength is increased with the increasing thickness, but it will decrease as the core height and inclination angle are raised. The results of this research may help the practical design and optimization of sandwich panel with corrugated core.

A theoretical model is developed to investigate sound transmission characteristics of an infinite lightweight plate line connected to equally spaced stiffeners and excited by an oblique plane wave. The reactive forces and moments at the line connections are obtained from the flexural and torsional motions of the stiffeners. The vibro-acoustic equation that describes the dynamic response of the structure is derived by employing the Fourier Transform method, which will be numerically solved by truncating the solution to converge. Numerical examples are presented to investigate the effects of the incidence angle, the stiffener spacing, the plate thickness, on the sound transmission characteristic of the system, and useful conclusions are drawn.

Nowadays vibration of hull caused by the shaft surface roughness has caught attentions all over the world. In this paper we conducted a brief analysis on this project based on the contact theory and FEM. Firstly, we calculated the contact force based on numerical simulation and contact theory. Then we analyzed the effects of speed and shaft surface roughness on the hull vibration. Results show that the effect of shaft surface roughness on the hull vibration is greater than that of speed. But when the frequency of contact force gets close to the natural frequency of hull, the effect of speed becomes obvious. These conclusions have large significance on the selection of shaft and the design of hull.

Liquid-liquid equilibrium tie-line data were examined at atmospheric pressure and at 298.15 K for ternary mixtures of (water + methanol + linalool) as well as (water + ethanol + linalool). The distribution ratios of alcohol between organic and aqueous phases are discussed. The immiscible area of (water + methanol + linalool) system is wider than that for the ethanol system. The experimental liquid–liquid equilibrium data were satisfactorily fitted by means of an extended UNIQUAC model.

In this study, three species of water ornamental plants, Lythrum salicaria, Typha angustifolia and Iris wilsonii, were introduced to removing nitrogen and phosphorus in lightly polluted urban landscape water. The results showed the experimental plants were all growing well in lightly polluted water and the growth rates were: Lythrum salicaria 33%, Iris wilsonii 19% and Typha angustifolia16%, respectively. The removal efficiency of TN of Lythrum licaria, Typha angustifolia and Iris wilsoni were 55.42%, 62.65% and 57.59%, respectively. The removal rates of TP of three species of hydrophytes were Lythrum licaria 63.9%, Typha angustifolia 51.7% and Iris wilsoni 38.9%, respectively. Based on the removal efficiencies on nitrogen and phosphorus and landscape efficiency, the three species of water ornamental plants were recommended as pioneer in aquatic vegetation restoration in urban lightly polluted landscape river.

Edge drop of strip and sheet is a key technological issue besides of gauge control and shape control during the process of wide strip rolling, the reasonable control procedure of edge drop can increase the qualified product ratio, as well the quality and performance of product, it is especially effective for the silicon steel sheet, tin sheet and automobile body sheet. Therefore, more researchers focus on the edge drop of strip and its control technology in recent years. In this paper, a new strip profile control equation is established originally, according to the ways of strip shape control technology of large-scale tandem cold rolling mills. The new equation describes both the shape control and edge drop control. Some verification is developed in the equation based on the 1420mm UCMW tandem cold mill. The research result about mechanics of edge drop and it's control have been applied in tandem cold rolling mill. The good result is obtained according to the field measured data, and the control precision is increased greatly.

Copy-Move is a common forgery in the research field of digital image forensics, this paper proposes a detection approach based on wavelet transform and two-dimensional image principal component analysis. After reducing the image dimension by Discrete Wavelet Transform(DWT)，2DIMPCA is applied to the fixed sized overlapping blocks of a low-frequency image in the wavelet sub-band to yield a reduced dimension representation from the horizontal direction and the vertical direction. The eigenvectors are then lexicographically sorted, the forgery part are localized by detecting for all neighborhood vectors by a certain threshold. The experiments demonstrate that the proposed approach can not only localize the copy forgery regions accurately, but also reduce the amount of computation and improve the detection efficiency.

This paper presents an FPGA implementation of a semi-fragile watermarking-based algorithm for a digital camera. The architecture of digital authentication camera is discussed and a semi-fragile watermarking algorithm based the invariant property of DCT coefficients quantization is designed which can survive a certain amount of compression. The components of a digital camera and the watermarking algorithm are described in Verilog HDL and implemented on the DE2-70 board. The results shown that the hardware implementation can provide real time performance and resist off-line attacks compare with the software-assisted solution.

Blind CFA interpolation detection，which identifies the demosaicing method used in digital camera by analyzing output images, provides many efficient tools for digital image forensics．In this paper, we proposes an approach of blind CFA interpolation detection based on the entropy of the correlative coefficients．By solving the pixel matrix equation, the CFA interpolation coefficients are calculated and the entropy of the coefficients are obtained, and they are further fed to SVM classifier to identify forgery. The experimental results show a high accuracy on blind CFA interpolation detection．Compared with existing ones，the proposed method in this paper indicates a better performance on the robnstness especially against lossy JPEG compression.

Based on investigation of current situation of the water environment of middle section of Inner Qinhuai River in Nanjing city, the water quality was assessed using single factor index method. The results showed that the water quality of Inner Qinhuai River was worse than Grade V of surface water environment quality standard(GB3838-2002).The key pollutants were total nitrogen, total phosphorus and ammonia nitrogen. The characteristics and genesis of water pollution were discussed as well, and strategy and suggestion to improve water quality was put forward.

Aiming at the issue on the development of gear form grinding machine, a method for analyzing the dynamic behaviors of the machine column was introduced. Based on the model of gear grinding machine developed before, a suitable finite element model of the column was established firstly. Modal analysis on the column was carried out by means of ANSYS software, and the first five natural frequencies and vibration modes of the column were obtained. According to the analysis results, some improvements on the original column structure were made. By comparing the static and dynamic behaviors of several different rib structures presented, the best column structure is selected. This method offers theoretical basis for the structural improvement of gear grinding machine.

Knowledge is an important resource providing competitive strategies for the firms. Managing knowledge through supply chain will bring more benefits to the businesses. Various factors during the process of knowledge flowing can cause different time delay. In order to analyze the problem of time delay of knowledge flow in supply chain, the knowledge flow model in supply chain based on stochastic Petri net is proposed and corresponding isomorphic Markov chain is given. The time performance and the efficiency of knowledge flow Petri net model are discussed. The proposed method can help the firm with the knowledge flow management and reorganization

Combined shape and gauge control is a hot issue in continuous hot plate and strip rolling field. Due to the coupled function of shape and gauge control in rolling process, mutual effects must be considered when shape control is carried out. Traditional shape and gauge control theories are of independent and the control systems are also separated, so it is difficult to ensure the quality of shape and gauge simultaneously. Based on the shape theory of shape and gauge control and function Φ derived from the load distribution method of Ichiro Imai , a combined shape and gauge control scheme was developed, which can adjust rolling regulations on-line according to the deviation of strip crown measured at the exit of the rolling mill. The method can ensure gauge precision while strip crown is adjusted and the purpose of combined shape and gauge control is reached.

Silicon-hydrogen crystalline models are proposed to estimate theoretical hydrogen storage capacity in porous silicon media with nanostructure features like cubic nodules, columnar forests and thin wall honeycomb like networks. To simulate these nanostructure features and their hydrogen storage capacities, three basic crystalline types (cubic, column and plate) have been developed as building blocks for constructing H-Si weight storage models under the assumption of that hydrogen is chemically bonded to available surface silicon atoms. Using these models, the hydrogen weight storage capacity for all feature dimensions from unit to infinitely long can be estimated. According to these theoretical models, the best nanostructure for hydrogen storage is cubic nodule, columnar forest and thin wall network in that order. They have weight storage capacity limits of 5.77%, 5.21% and 2.78% respectively for infinitely large feature dimensions.

Prediction of the forces in milling hypoid gear was often needed in order to establish automation and optimization of the tooth-milling processes. Based on the geometrical theory of the format face-milling, the multi-toothed milling forces theoretical model for form milling the gear of the hypoid gears is presented, the milling force factors were calibrated via single factor experiments and the simulation programs were prepared. Experiments were carried out to verify the availability of the multi-toothed dynamic milling force model, the experimental results is consistent with the simulation results.

Asia-Pacific Optical Satellite Observation System (APOSOS) is based on members of Asia-Pacific Space Cooperation Organization (APSCO). Its aim is to develop a regional or even global satellite tracking system basically composed of optical trackers. The system will be used to track objects of interest or space-debris for the safety of spacecraft launch mission or the intactness of operational satellites. APOSOS is composed of Asia-Pacific optical satellite observation center, APSCO member state node, sub-node and observation telescope. Asia-Pacific optical satellite observation center manage the whole observation network. Every member state node answers for the organization of observation with their country’s facility according to the observation plan released by observation center. The sub-node transmits observational data to corresponding member state node first. Then the member state node transmits the data summarized to the observation center. This paper will briefly introduce the APOSOS project first and present the design of computer communication and network in APOSOS project in detail.

A software system for CNC dressing involute grinding wheel was developed. When the ordinary grinding wheel was used in gear form grinding, the key was to handle the on-line dressing of involute wheel. Based on involute generation principle, an algorithm by taking straight line to approach involute with equal error was mainly studied. The NC program for dressing involute wheel was prepared by using VC++6.0 as programming tool, and wheel dressing experiment was completed. Experimental result shows that the proposed algorithm is valid，and the developed program is feasible with friendly interface. The success of this software system lays the foundation for further developing CNC gear form grinding system.

In this paper, a new technique to set up non-sinusoidal oscillations of the mold in continuous casting is presented. The waveform functions of this non-sinusoidal oscillation technique and operational parameters are analyzed and the design to realize the non-sinusoidal oscillation of mold is presented. It is anticipated that this technique will be widely applied as it has many advantages such as lower investment and maintenance cost, simple equipment which is easy to manufacture and maintain.

A soft rock is generally prohibited to be used as filling material for highway subgrade. A novel method for improving the performance of subgrade is proposed. Aiming at the large amount of highly weathered soft rock along Shiyan-Tianshui superhighway, the physical and mechanical properties of the natural soft rock is analyzed. Then the cement is mixed into the soft rock as filling material to better the subgrade performance.The field and indoor experiments showed that the maximum dry density and optimum water content increases when the cement content increases. By mixing the cement, the subgrade performance can be significantly improved.

Based on the investigation and detection of Juye Bridge, the major diseases of Juye bridge was identified. After that, a comprehensive analysis of the diseases was done .By the results of the analysis, attention was focused on the bridge reinforcement, and then the bridge of reinforced was calculated based on finite element method. By the comparative results from finite element analysis and actual tests, the strengthening technical level and corresponding norms were evaluated. The results show that the use of the finite element technology to detect and reinforce the bridge is effective and feasible, and finite element can be an effective tool of bridge reinforcement technology.

The rheological behavior of PA6/montmorillonite(MMT) by reactive extrusion was investigated using cone-and-plate rheometer. The experimental results indicated that PA6/MMT exhibited shear-thinning behavior. The shear stress of both neat PA6 and PA6/MMT increased with the increase in the shear rate. The reduction of the viscous activation energy with the increase of shear stress reflected PA6/MMT can be processed over a wider temperature.

Applying the 3D design and finite element technology to the design of city bus body, the model analysis of bus body frame was carried out. On the basis of general modeling of bus body, the locus of bus body frame was constructed in light of the inner surface profile of body cover panel. The 3D models of both bus body frame and floor frame were constructed under Pro/E, and the virtual assembly of them was completed. By leading the wire frame model of bus body frame in ANSYS software, its FEA wire frame model was obtained. The natural frequency and vibration mode of bus body frame can be known by means of model analysis. It lays the foundation for the FEA of whole bus body frame.

Applying reverse engineering technology to the design of engine port, the reconstruction technology on the free-form surfaces of the engine port were investigated deeply. The data on the 3D surfaces of the engine port sample were collected by means of laser scanner, and the scattered data points were processed in regularization. Triangulation processing of surface data cloud was carried out based on surface grid method. According to the free-form surface technology and curve fitting algorithm used at present, the methods used to reconstruct the port surface were proposed. Taking CATIA software as developing platform, the free-form surfaces of the engine port were reconstructed.

Gear form grinding is an efficient finish machining method for the gears with hard face. There are many factors which have an influence on tooth error in grinding process. In addition to the form error of form grinding wheel, the radial feed depth of grinding wheel has large impact on the tooth error. Based on the principle of gear form grinding, the influence of wheel feed depth on tooth error is analyzed theoretically. The magnitude of error is also analyzed quantitatively according to the simulation result obtained by means of tooth error analysis module, which is developed based on VC + +6.0 software analysis. The research result has a certain reference value for preparing CNC form grinding process and setting machine tool properly.

A new cutting technology on the rotating part of the interior helical surface of screw pump stator is proposed aiming at the tough condition in manufacturing metallic screw pump stator. An equation on the parameters of interior helical surface is constructed in three segments. The contact equations of three helical surfaces were constructed based on the contact condition of the rotary surface of cutting tools and on the helical surface of work piece. This way, three contact paths were confirmed and external profile of cutting tools was calculated. The geometrical shape of cutting tools was confirmed by calculating, fitting and substituting the errors. Calculated results indicated that this method is feasible, laying a theoretical foundation for the cutting process of the interior helical surface of the metallic screw pump stator.

The tap cutter is one of the key equipment for the pipeline maintenance and rush repair, which in intended to solve broken tooth due to continuous cutting and impact during tapping. Three kinds of tap cutter optimization schemes are put forward and the finite element design and cutting experiment are applied to study its cutting property. The results show that, the optimized tooth can improve the tapping effect, largely enhance the cutting property, which has reached the level of the most advanced TDW tap cutter; thus, it is of great importance on the efficiency improvement and cost saving of the domestic pipeline maintenance and rush repair.

The three dimensional deformation of strip during flat rolling is always a key issue, the lateral flow of metal on the strip edge will determines the quality of final product. In this paper, a theoretical analysis focus on the lateral flow of strip edge is discussed. Lateral Flow Factor and Relative Lateral Flow Factor are developed originally to analyze the lateral flow of strip and edge drop. For special process condition mentioned in paper, value of lateral flow factor is about 0.07.

In order to solve lubricating problem of circular tilting pad thrust bearing in the heavy equipment, lubricating characteristics mathematical model is established based on the Computational Fluid Dynamics and lubricating theory, the Finite Element Method is used to compute the lubricating characteristics of a circular tilting pad thrust bearing, and figure out thickness distribution of oil film, pressure distribution of oil film, temperature distribution of oil film, power loss and fluid flow, etc. lubricating characteristics parameters by self-compiling software program. Experiments testify the validity of the lubricating characteristics mathematical model. Through this method, the safety of a circular tilting pad thrust bearing can be forecasted, and the optimal design of such products can be achieved, and provides reasonable data for actual design and experiment, and decreases economy loss.

3D braided group theory is dissertated. The analysis procedure is described from the existing braided geometry structure to the braided space group; 3D braided geometrical structures are finally described by means of group theory. Some of novel 3D braided structures are deduced from the braided space groups. By describing the 3D braided materials with braided space point and braided space groups, the braided space groups are not always the same as symmetry groups of crystallographic because novel lattices can be produced and the reflection operation cannot exist in braided space point groups. Braided point and space groups are theoretical basis for deriving the novel braided geometry structure.

In cold rolling process, asymmetric shape defects are still a common problem to strip quality. For the mills with inverse symmetry roll shifting system, different roll wear and thermal contour of top roll system and bottom roll system could cause asymmetric shape defects during shifting operation. In this paper, three dimension finite element simulation models of inverse shifting roll system were established to calculate the parameters and to analyze the effects. Based on the idea in the mill engineering that mill style option depended on the product grade, shifting weakness was evaluated and the opinion of limit shifting was suggested. To improve control effect to asymmetric shape defects in cold rolling, shape control system with asymmetric shape control ability is developed, including asymmetric edge drop control at upstream stands and asymmetric flatness control at last stand. The further improvement of asymmetric shape control theory and practice is the key way to reach the higher precision of shape quality in cold strip mills.

Due to the coupled function of shape and gauge control in rolling process, mutual effects must be considered when shape control or gauge control is carried out. Traditional shape and gauge control theories are of independent and the control systems are also separated, so it is difficult to ensure the quality of shape and gauge simultaneously. Based on the updated shape theory and a single parameter model of load distribution method, a combined shape and gauge control method was developed, which can adjust rolling regulations on-line according to the deviation of strip crown measured at the exit of the rolling mill. The method can ensure gauge precision while strip crown is adjusted and the purpose of combined shape and gauge control is reached.

It is necessarily to study a new wire of economic section for market of building materials and development of social progress. Based on hardware to requirement of software, this paper exploits a computer simulation system for special straightening and shearing of wire, it face to the engineering directly. The software adopts the structure systems, which includes structure type, modularity, and expert system ability. The algorithm of the system is reliable. Its function is complete. Interface is friendly. It can be widely used in practical engineering.

Lubricating characteristics of sector cavity multi-pad hydrostatic thrust bearing are affected significantly by velocity, poor design can cause lubricant film rupture and dry friction, even leading to failure of hydrostatic bearing tribology. For this problem, the Computational Fluid Dynamics and the lubrication theory have been used to analyze velocity characteristics of the parameters such as cavity pressure of oil, oil cavity flow and film thickness, to gain relationship between velocity and lubricating properties of sector cavity multi-pad hydrostatic thrust bearing, avoiding the occurrence of hydrostatic bearing tribological failure. It is shown that along with the speed of the worktable increasing, the flow of lubricant oil caused by inertia and centrifugal force become larger, the flow of efflux from the oil cavity also become larger, causing the pressure drop of the oil cavity, the thinning of the film thickness, the occurrence of film rupture and dry friction and failure of hydrostatic bearing tribology. The study provides the basic data for the hydrostatic thrust bearing design, the lubrication and the experiment, implements of the prediction of the hydrostatic thrust bearing lubrication velocity characteristics, and reaches the purpose of reducing economic loss.

On the basis of establishing the mathematical model of grinding wheel profile by means of analytic method, the grinding wheel profile was determined. Different factors affecting gear form grinding was analyzed by means of numerical simulation. The form grinding wheel dressing software for grinding helical gear was developed, and the instruction for dressing grinding wheel profile was generated. Wheel dressing results show that the dressing software is correct and feasible.

3D elastic-plastic FEM model was established with ANSYS/LS-DYNA for edger rolling in hot strip mill. The effect of width reduction of edger roll, the slab original width and thickness, and edger diameter on the main parameters of dog-bone shape has been studied. According to many simulated conditions, the formulas of the main parameters of the dog-bone shape have been developed. In order to test the accuracy of the models, multiple correlation coefficient and residual standard deviation were calculated.The results show that multiple correlation coefficients are all above 98% and residual standard deviations are all below 5%, which indicate that these formulas acquire a high precise.

Bar straightening is an important work before the bar is applied as qualified products. In this paper, the mechanics of the straightening process is analyzed in detail on the base of conjugate quadric theory. A simulation program is developed with the investigation of straightening process as well. The equations, which describe roll contour curve and the longitudinal section, are given and simulated in computer. And a brief method of designing and drawing the straightening roll contour curve is introduced.

The slab edge rolling has been widely used in the roughing stand of hot strip mill to control the width of the slab. However, the slab edge rolling and consequent horizontal rolling will cause a significant width change in the head part and tail part of the slab, which have to be trimmed before the finishing stands. The short stroke control (SSC) technology has been developed to overcome this problem. In this paper, the finite element method (FEM) has been used to simulate the unsteady edge rolling process. Three SSC control curves have been compared in order to obtain the best width control result. The optimized SSC control curve has been applied to the industrial rolling mill.

During the cold rolling of thin strip on the 1220mm five-stand tandem cold mills, scratch marks occur on the surfaces of strip and work roll. The surface quality of strip is degraded and the roll wear increases, which resulting in significant economic loss. In this paper, the mechanics of strip scratch marks was studied by carrying out both field experiments and theoretical analysis. Slippage Factor (SF) and Scratch Mark Factor (SMF) were presented to indicate the conditions of strip scratch marks. Meanwhile, mathematical models and simulation code were developed to optimise the rolling schedules and to improve the scratch marks. The practical application of the developed models to the 1220 mm five-stand tandem cold mills verifies the effectiveness of the developed models. The mathematical models can be applied to other similar tandem cold mills.