最新刊期
      卷 ， 期 3 ， 2003
      • Fen Jin Li Yuanyuan Zhang Weiwen Xia Wei Chen Weiping
        Issue 3, Pages: 1-3(2003)
        摘要：Effects of some key processing parameters, such as pouring temperature, filling velocity, entry nozzle design, on aluminum alloy gradient materials in double-stream-pouring continuous casting were analyzed in order to control variation of these parameters within certain range so as to obtain desirable gradient distribution in aluminum alloy. Some available parameters were given for the fabrication of 2024/3003 aluminum alloy. The work is helpful to the practical application of the DSPCC in production of gradient aluminum alloys in large-scale.  
        关键词：Continuous Casting;Gradient Aluminum Alloy;Double-stream-pouring   
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        发布时间：2023-12-18
      • Peng Delin Sun Jianfei Shen Jun Chen Yu yong
        Issue 3, Pages: 4-5(2003)
        摘要：The Zr 41.2Ti 13.8Cu 12.5Ni 10Be 22.5 bulk amorphous alloy was prepared by arc-melting and rapid casting in a copper mould. The reflection, absorption and transmission spectra of the crystallized and the amorphous alloys were examined at ambient temperature. The results showed that the amorphous alloys have lower reflectivity, higher absorptivity and infrared transmittivity than the crystallized alloy. And the optical reflection peak of the bulk amorphous alloy moved to longer wavelength side.  
        关键词：Bulk Amorphous Alloy;Spectra Characteristics;Zr Based Alloy   
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        发布时间：2023-12-18
      • Zhang Qin Cui Jianzhong Lu Guimin
        Issue 3, Pages: 6-8(2003)
        摘要：Effects of magnetic field intensity and frequency on melt meniscus shape, microstructure and distribution of solute element in 7075 aluminum alloy in CREM semi-continuous casting were investigated experimentally. The results showed that with increasing in magnetic field intensity and decreasing in frequency the position of primary solidified shell forming dropped,melt cave depth shallowed, concentration of solute element in the crystal significantly increased, solid solubility and hardness rised. Accordingly near spheroidal grain in ingot increased and rosette-shaped grains decreased, resulting in finer and more homogeneous microstructure at all.  
        关键词：Electromagnetic Field;7075 Aluminum Alloy;Melt Cave Shape;Microstructure;Solute in Solid Solution   
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        发布时间：2023-12-18
      • Zhang Tiejun Su Yanqing Ding Hongsheng Guo Jingjie Jia Jun Fu Hengzhi
        Issue 3, Pages: 9-11(2003)
        摘要：Characteristics of magnetic intensity and its distribution in inductor for traveling magnetic casting were examined by combining small coil test with CT3-Agauss meter. The results showed that magnetic intensity varied periodically in longitudinal direction,and the nearer the distance to inductor surface,the larger amplitude variation of magnetic intensity,on the contrary,the smaller.The distribution of magnetic intensity is relatively uniform except edge effect in transverse direction and the magnetic intensity fades in the form of exponent with increasing in the distance from surface. And the magnetic intensity is directly proportional to input ampere turns. Up-mold with ferro-magnetic materials can greatly enhance the magnetic intensity in the inductor.  
        关键词：Traveling Magnetic Field;Casting;Magnetic Intensity   
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        发布时间：2023-12-18
      • Li Ri
        Issue 3, Pages: 12-15(2003)
        摘要：At present Sola-Vof is the popular method in simulating mould filling of casting but it is difficult to exert the boundary conditions upon the free surface of liquid by Vof. The above difficulty is overcome at all by calculating the fluid flow field of coupled gas with liquid phase as a single phase N-S equation using conservative scalar method. But in this circumstance there exists the trouble with the numerical divergence caused from large variations across the interface in coping with the interface of gas/liquid. The Simple scheme has to be reconstructed according to Van-leer scheme. The experiments were conducted by hydraulic simulation for filling large plate in counter-gravity mould, and the simulating results agreed well with the experimental results.  
        关键词：Mould Filling;Simple;Conservative Scalar Method;Van-leer Scheme   
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        发布时间：2023-12-18
      • Wang Guiqin Li Fengqing Li Changmao Liu Shunhua
        Issue 3, Pages: 15-17(2003)
        摘要：Effects of B on the electric conductivity of Fe or Si containing aluminum were examined. The results showed that the resistivity of the Si containing aluminum slightly ascended with B addition,while that of Fe containing aluminum significantly descended with B addition. Further investigation showed obvious effects of B on forms and distribution of Fe in aluminum.  
        关键词：B;Resistivity;Electric Conductivity;Impurity Elements   
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        发布时间：2023-12-18
      • Guo Shumei
        Issue 3, Pages: 18-20(2003)
        摘要：HAl64-5-4-2 alloy is one of complex brasses with high strength, wear resistance and impact resistance used for car’s synchronous gear ring and other wear resistant parts. In the process of extruded tube production, some key technologies, such as smelting and uniformity of Fe, Mn, production technique of non-defective ingot, control of tube straightness, were optimized. The specification was showed as follows: melting point of the alloy 910.4 ℃;flowing point 949.2 ℃; △H114.6 J/g, and excellent heat workability. Microstructure of the alloy-β phase at more than 550 ℃; while α+β phase at less than 550 ℃, wear resistant particle with multi-element rich Fe phase. The maximum mechnical properties σ b=796 MPa, σ 0.2=675 MPa,δ 5=20%, HB=218. The relation between microstructure and the properties was examined under different heat treatment conditions.  
        关键词：Complex Al-brass;Technology;Phase Transformation;Microstructure   
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        发布时间：2023-12-18
      • Gao Shoulei Zhang Jiatao Li Zuqi Qi Feipeng Gong Yongyong Zhai Qijie
        Issue 3, Pages: 21-22(2003)
        摘要：The effects of melt temperature on solidified structure of Sn-Sb peritectic alloy in ultrasonic field and the mechanism were investigated and analyzed. The results showed that melt temperature greatly affected on refinement of solidified structure of the alloy by ultrasonic field, particularly in Sn-Sb peritectic alloy containing 10.5% Sb （weight percentage） at melt temperature 300 ℃.  
        关键词：Ultrasonic Field;Melt Temperature;Sn-Sb Peritectic Alloy;Solidified Structure   
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        发布时间：2023-12-18
      • Zhang Chuan Pan Ye
        Issue 3, Pages: 23-25(2003)
        摘要：ZL101 alloy ingot has been prepared successfully in semi-solid forming by different techniques. Effects of solidification and cooling conditions on microstructure of the alloy were investigated. Morphology and size of the microstructure in semi-solid forming were quantitatively examined by shape factor and equivalent diameter of primary α phase and the measured data were listed. The results showed that the primary α phase can be well granulated and fined by appropriate chilling or properly vibrating at pouring temperatures 620 ℃ and 640 ℃. The ideal microstructures of the alloy in semi-solid forming can be realized in sand mould or thin-walled metal mould.  
        关键词：Semi-solid;Aluminum Alloy;Microstructure   
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        发布时间：2023-12-18
      • Lin Shouwei Wang Hongyu
        Issue 3, Pages: 26-27(2003)
        摘要：The conception of the concurrent visualization of solidification simulation was proposed. Sub-module CASTshow for concurrent display of the solidification simulation was developed based on double procedure program structure and the dynamic linkage library technology as well as FDM. The use of concurrent technology can enhance the transparence of the calculated process of CASTSoft and improve the share of the data and real time exchange in software.  
        关键词：Solidification Simulation;FDM;Data Visualization;Concurrent Display   
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        发布时间：2023-12-18
      • Shang Feipeng Liu Ruixiang Wang Yi Wu Xiaoguang
        Issue 3, Pages: 28-30(2003)
        摘要：The design of feeding system for cast steel was conducted by VC6.0 as foreground application and SQL Server2000 as background application based on SolidWorks. The results showed that the feeding system has the advantages of good interface and operational availability for universal feeding system design reference.  
        关键词：Feeding System;SolidWorks;VC6.0;SQL Server2000;Secondary Development   
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        发布时间：2023-12-18
      • Shi Dongkui Gu Liqiang
        Issue 3, Pages: 30-32(2003)
        摘要：3D model for the typical valve body mold used for Jinbei passenger car was established. Simulation of the filling process for the valve body was conducted with MAGMA software to forecast size and position of potential inner casting defects. The virtual trial casting has been made by the process optimization with computer.  
        关键词：Automobile Valve Body;Casting Process;Defects;Simulation   
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        发布时间：2023-12-18
      • Cai Qizhou Wang Lishi Wei Bokang
        Issue 3, Pages: 33-35(2003)
        摘要：Approaches to corrosion resistance of Mg alloy and its influencing factors were conducted. Characteristics of some corrosion resistant technologies for Mg alloy, including chemical conversion, anodizing oxidation, organic coating, electrochemical plating, laser surface treatment, ion implantation and physical vapor deposition, and structure with behavior of treated surface film layer were surveyed. The research status and applicable prospects of corrosion resistant technologies for Mg alloy were analyzed home and abroad.  
        关键词：Mg Alloy;Corrosion Resistance;Surface Treatment   
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        发布时间：2023-12-18
      • Vol. 0, Issue 3, Pages: 36(2003)
          
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      • Vol. 0, Issue 3, Pages: 37(2003)
          
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        发布时间：2023-12-18
      • Zhao Zhonghe
        Issue 3, Pages: 38-39(2003)
        摘要：Partite wax pattern combination technology and its application in investment casting were expounded. The attention was given. Use of partite wax pattern combination technology can overcome difficulties of mould design and manufacture and shorten lead time of product development.  
        关键词：Wax Pattern;Combination;Investment Casting   
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        发布时间：2023-12-18
      • Liu Tiancai Dong Xiuping Zhuo Xianzhi
        Issue 3, Pages: 39-40(2003)
        摘要：Structural features and technical requirement of angular castings with double cavity were described. Using top gating system with single ingate the crack in angular cavity can be eliminated and sound castings were produced successfully. Products yield was improved.  
        关键词：Carbon Steel Casting;Double Cavity;Investment Casting   
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        发布时间：2023-12-18
      • Han Xiao Cui Xulong Lü Zhigang Yan Shuangjing Jiang Buju
        Issue 3, Pages: 41-42(2003)
        摘要：Development of investmen casting enterprise pressingly need realize the modernization of quality control management. The features of quality management in investment casting enterprise at home were analyzed. The quality control management system suitable for investment casting at home was developed based on advanced idea of international management and its function and application were described.  
        关键词：Investment Casting Enterprise;Quality Management;Quality Control   
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        发布时间：2023-12-18
      • Vol. 0, Issue 3, Pages: 43(2003)
          
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        发布时间：2023-12-18
      • Li Zengmin Li Lixin Tan Jianbo
        Issue 3, Pages: 44-45(2003)
        摘要：Some successful experiences on cylinder head for gray iron in small-medium foundry enterprise in EPC were presented. An approach to technological experiments and a batch of trial product were conducted. This may be an actual example favorable for small-medium foundry.  
        关键词：Cylinder Head;EPC;Techniques   
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        发布时间：2023-12-18
      • Du Xiaoming Dong Xiuqi Qin Jie
        Issue 3, Pages: 46-47(2003)
        摘要：Productive technology and essential control for perpendicular ZGMn13Cr2Mo elbow with varying wall thickness in LFC were expounded. Some problems in production, including setting of gating system position,choice of coating, and prevention of the main casting defects were discussed emphatically. The relevant technological measures were given also.  
        关键词：Perpendicular Elbow;EPC;Casting Defect   
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        发布时间：2023-12-18
      • Wang Yongyun
        Issue 3, Pages: 48-49(2003)
        摘要：The casting defects, such as crack, porosity and shrinkage hole, often revealed in the steel sleeve with 664 mm/480 mm×3 870 mm and the weight of 4 500 kg of winding machine for silicon steel plate were analyzed in centrifugal casting. It is found that the selection of pertinent coating and spreading technology, and optimization of two varieties of rotating speeds for forming process at first speed and for sufficient strength of casting release at second speed can eliminate mentioned above casting defects.  
        关键词：Centrifugal Casting;Alloying Steel Sleeve;Applicable Technology   
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        发布时间：2023-12-18
      • Lu Gonghui
        Issue 3, Pages: 50-51(2003)
        摘要：The structural characteristics of inlet manifold with dispersive hotspot for Ford car were analyzed. Some practical experiences of technical design of the inlet manifold in permanent mold casting were presented. Aimed to shrinkage hole, shrinkage porosity, slag hole and gas hole generated in the production, the rational contro measures including smelting temperature,modification period,and pertinent casting operation,were drafted.  
        关键词：Inlet Manifold for Ford Car;Metal Mold;Gravity Casting   
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        发布时间：2023-12-18
      • Zhu Wenxu Wang Wensheng
        Issue 3, Pages: 52-53(2003)
        摘要：Essential casting technological design, principle of determining processing variables and ways of controlling productive process for aluminum alloy gear box were introduced. Casing quality was evaluated in large scale.Casting yield and qualified casting rate reached up to 66.7% and 100% respectively.  
        关键词：Gear Box;Technological Design;Processing Control   
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        发布时间：2023-12-18
      • Vol. 0, Issue 3, Pages: 54(2003)
          
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      • Vol. 0, Issue 3, Pages: 55(2003)
          
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      • Vol. 0, Issue 3, Pages: 56-57(2003)
          
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      • Lu Junpan
        Issue 3, Pages: 57-59(2003)
        摘要：Macro-structural features, inverse-segregation behavior and micro-shrinkage porosity of QSn6.5-0.1（Sn-P-Brone） strip billet in horizontal continuous casting were discussed. The results showed that column crystal dominated in transverse cross section; crystalline central line moved to top generally; crystalline angle was formed in main face; and inverse-segregation occurred in top, bottom surfaces and sides. Low tin zone appeared in the adjacency to segregation. The rejected castings presented during machining attributed to micro-shrinkage porosity.The effects of heat treatment on microstructures and mechanical properties were analyzed.Also rational heat treatment norm was built.  
        关键词：Sn-P-Bronze QSn6.5-0.1;Horizontal Continuous Casting;Microstructure and Properties   
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        发布时间：2023-12-18
      • Vol. 0, Issue 3, Pages: 60-61(2003)
          
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