Advanced Materials Research Vols. 228-229

Abstract: Increasing requirement of MCMnFe & MCCrFe in steel enterprises, the applying of the shaking ladle process is also adapted by more and more ferroalloy enterprises. Changing the speed of rotation, the phenomenon of the oil/-water interface motion is investigated by simulation test under the different eccentric distance, volume ration of oil to water, and speed of rotation. The results show that with the same ladle diameter and eccentric distance, and the increase of the speed of rotation, the state of Oil/Water interface motion is changed from oscillatory motion to lotus-leaf state motion, and finally the emulsifying state motion. Among the three states, the emulsification state is the required movement with the full agitation and fast mass transfer speed. The more the eccentric distance and the less Voil/Vwater, the less the critical speed of rotation is, and vice versa.

Abstract: This article firstly compared the domestic and foreign design status of LED lamps, and then pointed out the necessity and significance of developing new-type LED domestic lamps in China. After that it briefly analyzed the rational factors that would affect LED lamp design and illustrated the design ideas of new-type LED domestic lamps with selected cases.

Abstract: By circumference milling with 5-axis machine or machining center has quite the machining efficiency and the surface quality of the products been improved. But when inclined inside surface of cavity is circumference milled with the default linear interpolation of rotation angle algorithm, it results in a serious non-linear error, which takes on over cutting or under cutting, e.g. the inclined plane will be over milled by the machine with dual swivel-head machining center. In order to resolve this problem, the direct interpolation algorithm of tool orientation is developed after analyzing the algorithm of linear interpolation of rotation angles and its non-linear error is. The algorithm is reported and tested with the object of a machine with AB-axis swivel head. The testing results proved that it can resolve the problem of non-linear error.

Abstract: There are many ways of designing product. The article adopts the way , a systematic design by introducing the genetic theory of biological DNA( half-kept copying way) , that is to continue the identifying feature and they have some similarities in creation. The article combines gene of DNA in the biological field and industrial designing theory ,then to explore the basic theory of DNA product in the industrial designing by referring to the engineering theory of gene. In addtion, the article discusses DNA and its concept of DNA product and analyzes the comprising of DNA, then to apply the theory of DNA product to the product design. On the basis of analyzing their theories and have a research of DNA and product DNA, we select the electric pot of Medi Firm, a domestic bigger houshold electrical appliances enterprise, to make a modeling reseach and design.

Abstract: Aiming at the center wedge of the railway freight car buffers, the forging process was analyzed and the die design was optimized. The direct finish-forging process after pre-forming process was contrasted with the finish-forging after pre-forging based on pre-forming process, and the influence of different billet sizes and die structures on the forming were analyzed and compared. To validate the different process scheme and die structure, the numerical simulations were done using FEM software deform3D. The results show that the filling capacity of billet to die cavity increases greatly by using direct finish-forging process and finish-forging die with the resistance wall and the utilization coefficient of materials is improved. This can reduce working procedure and improve the productivity.

Abstract: The numerical simulation model of single roller rapid solidification melt-spinning CuFe10 alloys was built in this paper. The vacuum chamber, cooling roller and sample were taken into account as a holistic heat system. Based on the heat transfer theory and liquid solidification theory, the heat transfer during the rapids solidification process of CuFe10 ribbons prepared by melt spinning can be approximately modeled by one-dimensional heat conduction equation, so that the temperature distribution and the cooling rate of the ribbon can be determined by the integration of this equation. The simulative results are coincident very well with the microstructure of rapid solidification melt spinnng CuFe10 alloys at three different wheel speeds 4, 12 and 36 m/s.

Abstract: The product design is divided into conceptual design and improved design in the field of industrial design in China featuring with free semantic design and pure styling design. With systematic process ignored, the product design could hardly guide its practice. All cultural phenomena are symbol phenomena, so is product design as an important cultural creation on which progress of human society depends. The product system design under the guidance of the principle of semantics makes some factors as symbols of product, including function, material, structure, Man-Machine, image shape, math physics, etc, to probe the specific process and method of code switch in the course of product design system.

Abstract: The Friction stir blind riveting (FSBR) process consists of a blind rivet is driven at high rotational speed and brought into contact with the workpieces, thereby generating frictional heat between the rivet and the workpiece, which softens the workpiece material and enables the rivet to be driven into the workpieces under reduced force. The riveting of lap joint of AZ31B(3mm) magnesium alloys plate and a DP600 (1mm) high strength steel plate was produced by FSBR using 2200rpm rotation speed, various feet rates and different lap mode to investigate the effects of the joint morphology and strength. The joint strength depended strongly on the shank of rivet itself shear strength，however in which case the strength of joint impacted by rivet assembly quality (the lap of plates, the tightness rivet of workpiece). So positioning the steel sheet on the top is desirable, the maximum shear strength of the joint reached about 6.0KN.

Abstract: When design the spline broach,it refer to many parameters, large calculated amount , tedious teeth design and long design cycle .this Papers according to structural parameters of involute spline broach,establishe 3D parameter models with Solidworks. based on the secondary development environment of Solidworks and Visual Basic Language,build explanation mechanism, interface design, run the program realize The geometric constraint Parametric Modeling of involute spline broach. The digital platform of involute spline broach for design take shape initially,short Design cycle improve design precision ,come true broach design automation.

Abstract: The constituting of diagnosis expert system and the basic theory of fault tree analysis were introduced at first. A model of combining fault tree with expert system was analyzed. It focused on the hydraulic excavator PC220-7 for Komatsu according to the hydraulic system breakdown of law and order was particularity. A method combined the fault tree analysis with an expert system based rules was adopted. It was expressed systematically expert knowledge by building a fault tree. According to the fault tree, a database of diagnostic rule can be automatically generated. Automatic diagnosis knowledge acquisition has become reality. A hydraulic system fault of excavator was given as an example to design an expert system with the function of complex reasoning and explanation. It provides a reference for hydraulic excavator of the use of management and fault maintenance personnel to solve excavator problems. It shows that this method has a good application in the future.