最新刊期
      卷 ， 期 6 ， 2002
      • Qian Hancheng Wu Qifeng Zhao Jianhua
        Issue 6, Pages: 1-4(2002)
        摘要：Based on the greenness idea, the greenization planning on the hypoeutectic cast Al-Si alloy is provided. There are a great many of Al-Si alloy grades at present., for example, 11 grades in China, 14 grades in USA, 16 grades in Russian, 11 grades in Japan. It is found that most of mechanical properties of the alloys are covered each other. There are much trouble with materials selection, processing, management and recovery. To solved above problems, two grades groups would be planned. One of the alloy is low cost with middle mechanical properties（σ b=150～200 MPa,δ 5=1.0%～4.0%, e. g., A356.0 in USA or ZL101 in China）while the other alloy is middle cost with higher mechanical properties （σ b=200～420 MPa,δ 5=2.0%～8.0%, e. g., ZL120 in China）.  
        关键词：Hypoeutectic Cast Al-Si Alloys;Greenization Planning;Gross Mass of Total Life Cycle   
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        发布时间：2023-12-18
      • Zhang Xinping Yu Sirong He Zhenming Liu Yaohui
        Issue 6, Pages: 5-7(2002)
        摘要：Passivation anodized curves of Ti-Fe-Mo-Mn-Nb-Zr alloys with various constituents have been measured by electrochemical technology in Hank’s artificial body fluid. Erode dynamic parameters were obtained by regression analysis. Based on BP artificial neutral network system, the non-linear relation between various compositions of Fe, Mn, Zr, Mo, Nb elements and erode dynamic parameters as well as the relation between weight fraction of different components and erode rate were established. The experimental results verified that the predicted results were well in agreement with the actual measured results.  
        关键词：Ti Alloy;Electrochemical Erode;Dynamic Parameters;Artificial Body Fluid;Artificial Neutral Network;Regression Analysis   
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        发布时间：2023-12-18
      • Xu Guangming Wang Zhefeng Cui Jianzhong
        Issue 6, Pages: 8-10(2002)
        摘要：The relationship of stirring frequency and voltage with stirred molten metal density was given by simulation of stirring process for AlSn8Si2Pb2CuCr alloy. The optimized technological processes were determined through analyzing the stirring process simulation. The aluminum alloy melt with extremely uniform density distribution can be obtained with 90 degree the phase angle difference between the individual coils, 50 Hz the stirring frequency and 7 V stirring voltage. The simulated results are well in agreement with the experimental results.  
        关键词：Electro-magnetic Stirring;Electro-magnetic Force;Velocity Field   
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        发布时间：2023-12-18
      • Lu Wenlong
        Issue 6, Pages: 10-11(2002)
        摘要：The effect of heat treatment on the damping properties of the Mn\|Cu damping alloy in extruding casting,compared with that in the water cooling permanent mold was studied.The results showed that under the condition of the 800 ℃×4 h solution treatment with immediate water quenching and aging at 400 ℃ for 4 h,the optimum damping property of MN\|Cu damping alloy in extruding casting that is higher by 20% than in water cooling permanent mold.Moreover,the damping property of the alloy changes with the frequency.A internal friction peak occurs at frequency 225 Hz.  
          
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        发布时间：2023-12-18
      • Xing Dawei Sun Jianfei Wang Gang Zhu Zhenye Shen Jun Dong Shen
        Issue 6, Pages: 12-14(2002)
        摘要：Effects of Sn addition on the glass forming ability of Zr 52.5Ti 5Ni 14.6Cu 17.9Al 10 bulk metallic glass alloy have been investigated. The results showed that both the glass transition temperature T g and crystallization temperature T x moved to higher temperature to some extent while the melting temperature T m showed slight variation with various Sn addition. T g and T x increased by 17 ℃ and 36 ℃ respectively with 1.86% Sn addition, thus the ΔT x increased by 19 ℃ and the reduced temperature increase from 0.63 to 0.65. The effects of Sn on T g, T x and the glass forming ability were analyzed.  
        关键词：Bulk Metallic Glass;Sn Addition;Glass Forming Ability   
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        发布时间：2023-12-18
      • Li Fengjun Liu Baicheng Shen Houfa
        Issue 6, Pages: 15-17(2002)
        摘要：Mold filling speed of iron casting in lost foam casting was experimentally measured.Effects of technological factors on the filling speed were studied.Experimental results indicated that there existed fluctuation to some extent in the removing speed of liquid melt\|pattern interface.The removing speed tended towards reduction with increasing distance from in\|gate.An empiric calculated formula of mold filling as a function of vacuum rate, pattern density, pouring temperature and metal static head was established through multiple regression. The application of the formula to numerical simulation for mold filling was studied.  
        关键词：Lost Foam Casting;Mold Filling Speed;Numerical Simulation   
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        发布时间：2023-12-18
      • Wang Wenquan Ye Shengping Wu Zhichao
        Issue 6, Pages: 17-18(2002)
        摘要：Design of the cold felting mold for complicated case in lost foam casting was carried out successfully using 3-D modeling. The results showed that parametrized 3-D modeling not only has the advantages of making mold design more flexible and highly effective but also can provide reliable data stream for the subsequent mold manufacture.  
        关键词：D Modeling;Lost Foam Pattern;Cold Felting Mold   
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        发布时间：2023-12-18
      • Du Jun Liu Yaohui Yu Sirong
        Issue 6, Pages: 19-22(2002)
        摘要：Casting technology and foundational research status of four types of hybrid reinforcement, namely continuous fibre/particulate（whisker）, short fibre （whisker）/short fiber, short fibre （whisker）/ particulate, particulate/particulate for hybrid reinforced metal matrix composite were surveyed. It is proposed that the further research orientations in hybrid reinforced metal-matrix composite go on toward the developments of fabrication technology for uniformly preformed hybrid reinforcements and their behavior, interaction and mechanism of the reinforcement.  
        关键词：Metal Matrix Composite;Hybridization;Reinforcement   
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        发布时间：2023-12-18
      • Xia Mingxu Yuan Sen Jiang Bailing Wang Wuxiao
        Issue 6, Pages: 23-25(2002)
        摘要：The shrinkage defects in Mg alloy die casting were examined. Occurrence of surface and internal fissure was attributed to delamination filling during the ejection of diecasting with the asynchronism of the solidification shrinkage. Axial shrinkage porosity involves in feeding characteristic a casting with various wall-thickness and pressure holding time. The measures and suggestions for preventing or eliminating defects from Mg alloy diecasting were put forward.  
        关键词：Mg Alloy;Diecasting;Shrinkage Defects;Surface Fissure   
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        发布时间：2023-12-18
      • Hong Shenzhang Zeng Zhenpeng
        Issue 6, Pages: 26-27(2002)
        摘要：The specific pressure is one of the key factors influencing grain size in squeeze casting. The relationship of the grain size with the alloy phase diagram, thermo\|dynamics as well as kinetics was analyzed. Effects of the specific pressure on nucleation rate and linear growth velocity were expounded in squeeze casting. The specific pressure and other technical parameters for various part materials in squeeze casting were listed.  
        关键词：Squeeze Casting;Specific Pressure;Grain Size   
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        发布时间：2023-12-18
      • Tang Duoguang
        Issue 6, Pages: 28-29(2002)
        摘要：The basic features of the squeeze casting were described. The squeeze casting machine should possess the ability of smooth mold filling with low flow speed and large discharge quantity and increasing the squeezing pressure instantaneously. The details of oil press used as squeeze casting machine in China and thereby the casting defects were analyzed. Some comments on the future development of the squeeze casting in China were suggested.  
        关键词：Squeeze Casting;Mold Filling;Aluminum Alloy   
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        发布时间：2023-12-18
      • Vol. 0, Issue 6, Pages: 30(2002)
          
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      • Vol. 0, Issue 6, Pages: 31-32(2002)
          
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      • Vol. 0, Issue 6, Pages: 32-33(2002)
          
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        发布时间：2023-12-18
      • Yuan Da Shan Zhongde Zhang Renji Teng Qi
        Issue 6, Pages: 34-35(2002)
        摘要：Combining Rapid Prototyping with Manufacturing Technology for Ceramic Mould in Investment Casting is an effective method for rapidly making metal die. In order to further shorten production period and drop cost, a set of new spray forming technology for ceramic mold in investment casting was developed. The composition of the ceramic coating and technological parameters of the spray forming were studied. The experimental results show that the metal die has high quality and meets specified requirement.  
        关键词：Ceramic Mold Casting;Spray;Rapid Prototyping;Metal Die   
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        发布时间：2023-12-18
      • Lü Cunchang
        Issue 6, Pages: 36-37(2002)
        摘要：The improved measures of the present process to prevent porosity of the casting with isolated hot spot were described. And the formation of the defects was approached. Increase in calcined temperature for mold shell as well as pouring temperature and decrease in temperature of liquid steel in mold shell can reduce or prevent the shrinkage hole.  
        关键词：Investment Casting;Hot Spot;Shrinkage Hole;Pouring Temperature   
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        发布时间：2023-12-18
      • Wang Xinjie
        Issue 6, Pages: 38-40(2002)
        摘要：Based on some effective operation experience and improved measures in full mold casting,pattern parting design, acquirement of the dry steam for foamed moulding, arrangement of gating system, structure of vibro-table and the removal of waste gas were provided in terms of lost foam casting characteristics so that rejected casting have been reduced and environmental protection has been realized.  
        关键词：Diesel Engine;Block Cylinders;Lost Foam Casting   
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        发布时间：2023-12-18
      • Che Zehong
        Issue 6, Pages: 41-42(2002)
        摘要：Mechanism of the effects of CeO 2 on refining primary Si in hypereutectic Al-Si alloy was studied. The results showed that CeO 2 is susceptible to act as substrate for primary Si nucleation because CeO 2 has the same face cubic lattice and very near lattice parameter with Si and has higher melting temperature. As a result, CeO 2 addition can refine obviously the alloy.  
        关键词：CeO 2;Hypereutectic Al-Si Alloy;Modification   
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        发布时间：2023-12-18
      • Liu Xiangfa Qiao Jinguo Song Xigui Bian Xiufang
        Issue 6, Pages: 43-45(2002)
        摘要：Under laboratory and practical production conditions, effects of Al-P master alloy on the modification technology and efficiency as well as mechanical properties of eutectic and hypereutectic Al-Si alloy have been investigated. The results showed that Al-P master alloy has the advantages of convenient operation, stable and good modification effects. The mechanical properties of Al-P master alloy modified alloy are higher to extent degree as compared with that of other modifiers modified alloy. The Use of the Al-P master alloy as modifier can be free from slag and pollution and can save energy, increase production yield and decrease the wastage of Al-Si alloy.  
        关键词：Al-P Master Alloy;Al-Si Alloy;Modification Treatment   
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        发布时间：2023-12-18
      • Vol. 0, Issue 6, Pages: 45(2002)
          
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      • Vol. 0, Issue 6, Pages: 46-47(2002)
          
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      • Vol. 0, Issue 6, Pages: 47-48(2002)
          
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      • Wang Zhongmin Diao Meiyan Mao Lei
        Issue 6, Pages: 49-51(2002)
        摘要：The feasibility of casting bush with low Ni high Mn Cu-Al alloy was demonstrated through analysis of the working performance and failure of bush for hot plate mill. The optimized composition of the alloy was determined by orthogonal method. The comprehensive mechanical properties can be improved significantly by quenching at 820 ℃×1 h and the bush service life increased from 36 h to over 72 h.  
        关键词：Bush for Hot Plate Mill;Low Ni High Mn Cu-Al Alloy;Orthogonal Experiment   
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        发布时间：2023-12-18
      • Lu Dehong Zhou Rong
        Issue 6, Pages: 51-52(2002)
        摘要：Cast iron-hard alloy bimetal was prepared in sand mould. The interface bonding strength of the bimetal casting reached to 757MPa. The interface area consists of cast iron layer, mixed layer, diffusion layer and hard alloy. Metallurgical bonding in interface occurred through the surface layer of hard alloy to be melted with molten iron and in turn the mixture solidified.. The crack mainly occurred in the cast iron layer of the interface area.  
        关键词：Hard Alloy;Bonding;Compound Casting   
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        发布时间：2023-12-18
      • Vol. 0, Issue 6, Pages: 53-54(2002)
          
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      • Vol. 0, Issue 6, Pages: 55-57(2002)
          
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      • Vol. 0, Issue 6, Pages: 59-60(2002)
          
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