最新刊期
      卷 ， 期 5 ， 2004
      • Tang Bin Li Peijie Zeng Daben
        Issue 5, Pages: 1-4(2004)
        摘要：The effects of Ca and Sr on the microstructures and properties, including microstructural morphology, mechanical properties and hot-crack resistantnce, were examined. The results showed that both Ca and Sr compound additions can not only refine microstructure but also improve the yield strength of the alloy. Proper Sr addition can improve effectively the hot-crack resistantnce of Ca-containing Mg alloy.  
        关键词：Ca;Sr;AZ91D Mg Alloy;Hot Crack   
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        发布时间：2023-12-18
      • Fu Gaosheng Qian Kaungwu
        Issue 5, Pages: 4-6(2004)
        摘要：The TiC p/Al billet is melted in molten Mg with different processing technologies. The results showed that TiC p/Al billet can not be melted in liquid Mg during holding time for 60 min at 800 ℃ without stirring while TiC p/Al billet can be melted in Mg melt with uniformly distributed TiC particle by mechanical stirring. The melting mechanism can be expounded as follows: molten Al matrix in the TiC p/Al billet diffuses into liquid Mg through convection and TiC particle bond is destroyed with uniform distribution in Mg melt by shearing during mechanical stirring.  
        关键词：Mg Matrix Composites;TiC p/Al Billet;Melting Mechanism   
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        发布时间：2023-12-18
      • Zong Hua Huang Xingmin Fu Mingxi Zha Yanqing Li Yan
        Issue 5, Pages: 7-9(2004)
        摘要：Effects of electromagnetic continuous and discontinuous stirring at holding temperature on the microstructure for ZA27 alloy were investigated. Grain size can be refined effectively and a ideal critical value T C on stirring effect exists with electromagnetic continuous stirring at holding temperature while grain size was sphered remarkablly and distributed uniformly with discontinuous electromagnetic stirring.  
        关键词：Electromagnetic Stirring;Solidification;Discontinuous Stirring   
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        发布时间：2023-12-18
      • Zhang Wenfeng Zhu Di Xue Yujun Zhao Fei
        Issue 5, Pages: 9-11(2004)
        摘要：Effects of the amoutnt of suspending nano-SiC particulate and cathode current density in the electrolyte on nano-SiC particulate amount and electrolyte rate in Ni-SiC compound electrolyte layer were analyzed at a given pH value, temperature and stirring speed for nano-Ni-SiC composite preparation. The surface morphology and structural constituent in the electrolyte layer were observed by SEM. Effects of nano-SiC particulate amount in compound electrolyte layer on the micro-hardness were approached. The results showed that the nano Ni-SiC plating layer possessed smooth and even surface, uniform and sound microstructure as well as higher micro-hardness than single Ni plating layer.  
        关键词：Nano-compound Electrolyte Layer;Surface Morphology;Micro-Hardness   
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        发布时间：2023-12-18
      • Xu Yue Kang Yonglin Wang Zhaohui Dong Wenchao Liu Jinwei
        Issue 5, Pages: 12-14(2004)
        摘要：We have developed a new semi-solid slurry preparation unit and direct rheoforming equipment to investigate the semi-solid microstructure of AZ91D alloy with varying temperatures and shearing rate compared with the microstructure in conventional casting methods. The results showed that the solid particle became finer, more homogeneous and rounder with the decrease of temperature or the increase of shearing rate. At the same time, the forming mechanism of semi-solid structure prepared by the novel machine was studied.  
        关键词：AZ91D;Semi-solid;Temperature;Shearing Rate;Mechanism   
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        发布时间：2023-12-18
      • Rao Lei Geng Maopeng Yang Xiaojun
        Issue 5, Pages: 15-18(2004)
        摘要：Melting ratio of electrode and efficient power factor of the current under different electroslag melting-casting conditions were calculated by energy conservation law through coupling simulation of thermo-electric field in slag pool at high temperature. It is theoretically verified to increase effectively the electric energy’s efficiency and reduce the product cost by proper melting-casting current and shallow slag pool resulting in saving enegry and reducing consumption in pratical production.  
        关键词：Electroslag Casting;Consumable Electrode;Melting Ratio;Numerical Simulation   
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        发布时间：2023-12-18
      • Wang Xubo Tian Xuelei Sun Jianjun Tian Weixing Zheng Hongliang
        Issue 5, Pages: 18-20(2004)
        摘要：The SOLA-VOF algorithm was employed in the most numerical simulation of flow field for the mold filling process of the castings. It will take much time to get the simulated results due to too many iteration times in traditional ways. The unkown speed field was calculated by the results of the pressure field which has been calculated by the kown speed field, avoiding the iteration calculation of both pressure and velocity fields at the same time and improving the calculated speed. The hydraulic simulation were conducted to verify the equation availability. The experimental results is well in agreement with the simulated results.  
        关键词：SOLA-VOF Method;Casting;Filling;Numerical Simulation   
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        发布时间：2023-12-18
      • Wang Jianhong Long Siyuan Cao Hanxue
        Issue 5, Pages: 21-23(2004)
        摘要：The casting process is still mainly used for the wheels of automobile and motorbike at present. Some casting methods for the wheels were reviewed. The merits and deficiency of these methods were compared from the viewpoint of key technical factors of processing control.  
        关键词：Wheel;Casting;Technology   
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        发布时间：2023-12-18
      • Yang Mingbo
        Issue 5, Pages: 24-26(2004)
        摘要：On the basis of the theoretically developed mathematical model, the influence of pouring temperature on the proportion of columnar crystal zone, the columnar dendrite arm spacing and the directional orientation in the solidification structrue of 1Cr18Ni9Ti stainless steel twin-roll thin strip with constant thickness was predicted. The simulated results indicated that with the pouring temperature increase, the proportion of columnar crystal zone increased first, and then declined gradually, while the columnar dendrite arm spacing and the directional orientation decreased with pouring temperature increase but the columnar dendrite arm spacing had a suddenly increasing trend at higher pouring temperature by solidification end.  
        关键词：Twin-roll Thin Strip;Pouring Temperature;Solidification Structure;1Cr18Ni9Ti Stainless Steel   
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        发布时间：2023-12-18
      • Tian Fuxiang Wang Mingyong
        Issue 5, Pages: 27-28(2004)
        摘要：A practical mould structure and die casting technology for micro-motor rotor were presented. The key factors for the mould design was expounded. Not only the tool steel can be saved but also the venting quality of the mould and the product quality can be improved by means of fixed block and fixed sleeve structure.  
        关键词：Die Casting Die;Die Casting for Rotor;Fixed Block;Fixed Sleeve   
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        发布时间：2023-12-18
      • Yao Sanjiu Liu Weihua
        Issue 5, Pages: 28-31(2004)
        摘要：In order to improve the quality and efficiency on die casting die design with oblique pin drawing core, the traditional design process was optimized. By using of interrelation of main parts in the die casting die, design was processed from the die cavity toward the outside step by step. Design sequence of the views in the assembly is indicated as follows: main section view, main view, assistant section view, local section view. And then the assistant parts and all parts in detail were designed. Design essentials and skill for each part were discribed. The favorable effectiveness was obtained through practical verification.  
        关键词：Die Casting Die;Design;Skill;Oblique Pin   
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        发布时间：2023-12-18
      • Zhu Sanhu
        Issue 5, Pages: 32-34(2004)
        摘要：The die casting die design for 3 reries of auto-level instrument with 11 types was introduced.The top circular gating system has the advantages of simple removal,inproved appearance and long life service of the die compared with flat gating system abroad.  
        关键词：Auto-level Water Untrument;Die Casting Die;Flat Gating System;Circular Gating System   
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        发布时间：2023-12-18
      • Vol. 0, Issue 5, Pages: 35(2004)
          
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        发布时间：2023-12-18
      • Yu Jing Zhang Xinping Xu Qingyan Liang Zuojian Liu Baicheng
        Issue 5, Pages: 36-37(2004)
        摘要：Combining with pratical production in first Tractor Co.,Ltd.,shrinkage hole/porosity of a steel casting in investment casting was predicted by a developed solidification simulation software based on FT-STAR. The simulated results were well in agreement with the results of practical castings in ultrasonic detection. Meanwhile, the gating system of the casting was optimized to provide a reference for improving the technology by applying the software.  
        关键词：Investment Casting;Simulation Software;Shrinkage Hole;Practical Validation;Processing Optimization   
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        发布时间：2023-12-18
      • Zhao Hongliang Weng Kangrong Guan Shaokang
        Issue 5, Pages: 38-40(2004)
        摘要：The development of hollow blades with high efficient cooling have high requirements for the preparation and properties of the ceramic core. The material, preparation and property requirements of ceramic core and conventional ceramic core as well as newly developed nano-compound ceramic core were expounded.  
        关键词：Hollow Blades;Ceramic Cores;Core Materials;Nano-compound Ceramic Core   
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        发布时间：2023-12-18
      • Xiong Guangyao Hong Jiadi
        Issue 5, Pages: 41-42(2004)
        摘要：ZG42CrMo cast steel in investment casting instead of conventional 50Mn wrought steel for crawler belt of 120 vertical arm loader has been introduced. The results showed that the method not only can meet the requirements for mechanical properties and the application performance, but also can reduce obviously the production cost.  
        关键词：Investment Casting;ZG42CrMo;Crawler Belt   
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        发布时间：2023-12-18
      • Vol. 0, Issue 5, Pages: 42(2004)
          
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      • Vol. 0, Issue 5, Pages: 43(2004)
          
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        发布时间：2023-12-18
      • Wu Zhengce
        Issue 5, Pages: 44-45(2004)
        摘要：Mould for cylinder sleeve in centrifugal casting substituted for in sand casting possesses the features of high qualified product, stable performance, high yield of iron melt and high production rate. The practical production shows the scketch available.  
        关键词：Mould for Cylinder Sleeve;Centrifugal Casting;Cast-iron;Sand Casting   
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        发布时间：2023-12-18
      • Chen Yang Ye Shengping Wu Zhichao
        Issue 5, Pages: 46-48(2004)
        摘要：The rapid manufacturing of inspection tool for automobile window based on program-controlled machining of foam pattern combined with EPC was introduced. The results showed that the technology not only shortened manufacturing period but also reduced machining allowance and enssured the stability of the inspection tool.  
        关键词：Inspection Tool for Automobile Window;Aluminum Alloy;Full Mold Casting   
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        发布时间：2023-12-18
      • Wang Xinjie
        Issue 5, Pages: 48-50(2004)
        摘要：Based on a practically successful example in EPC the skill of technological design and practical measure for iron thin walled housing were summarized.Production cast estimate was conducted.A active approach to the ratio of product property/price was carried out.The results provided reliable basis for further widespread application  
        关键词：Diesel Engine;Wheel Housing;EPC   
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        发布时间：2023-12-18
      • Tian Xuefeng Fan Zitian Huang Naiyu Wu Hebao Dong Xuanpu
        Issue 5, Pages: 51-53(2004)
        摘要：As-cast and heat treated microstructures and properties of AZ91 Mg alloy in gravity LFC were systemically investigated. As-cast microstructure of the alloy in LFC is mainly composed of primary α-Mg dendrite and divorced eutectic β-Mg 17 Al 12 as well as a new phase Al 32 Mn 25 that was not found in other technologies（ linear dimension 5～50 μm）. The mechanical properties of as-cast AZ91 Mg alloy in LFC were higher than those in resin-bonded sand casting due to chilling and cushioning effects of foam pattern during mold filling in LFC. Heat treated comprehensive mechanical properties were improved remarkably. The elements diffusion rate slowed down during homogeoization.  
        关键词：Mg Alloy;LFC;Mechanical Properties;Microstructure   
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        发布时间：2023-12-18
      • Lei Jian Wei Bokang
        Issue 5, Pages: 54-56(2004)
        摘要：The whole of casting technology for developed Al 10 Sn 3Si 2PbCu bush with high properties was well known. Using present equipments, including melting, casting and rolling, and optimizing casting technology, the yield of the rolled strip reached to more than 93%.Compared with conventional Al 20 SnCu alloy, the fatigue value with sapphire fatigue testing is higher by 30%～40% attaining to 100～115 MPa equivalent to foreign counterpart.  
        关键词：Bush Alloy;Casting-Rolling;Fatigue Strength;Sapphire Testing   
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        发布时间：2023-12-18
      • Ma Ruixiang Liu Zhongxia Wang Mingxing Wang Jiefang Li Jiwen
        Issue 5, Pages: 57-58(2004)
        摘要：Effects of different Al-Ti master alloys, including electrolyzed low Ti-Al, Al-5Ti, Al-5Ti-1B and Al-B+electrolyzed low Ti-Al master alloys, on grain refinement for 6063 Al alloy with different Ti content were compared. It was showed that all master alloys can obviously refine the 6063 Al alloy and the grain size became finer gradually with Ti content increase. The refining effect with electrolyzed Ti-Al master alloy was superior to that with Al-5Ti master alloy in the modified Al-alloy with the same Ti content while the refining effect with both electrolyzed Ti-Al and Al-B master alloys was superior to Al-5Ti-B master alloy in the modified Al alloy with the same Ti content.  
        关键词：Electrolyzed Low-Ti Containing Aluminum Alloy;Master Alloy;Grain Refinement;6063 Al Alloy   
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        发布时间：2023-12-18
      • Pan Guoru Zhang Wen Qiu Cheng Wu Yuanbiao
        Issue 5, Pages: 59-60(2004)
        摘要：The experience of cast Mg alloy in graphite green sand mold was summarized and its casting characteristics were analyzed. The properties and proportions of indivudual components in green sand were discribed. The results showed that the Mg alloy castings with good quality have been produced in the green sand composed of graphite sand, burning-resisting agent R-SO 4N 3 and boric acid H 3BO 3.  
        关键词：Mg Alloy;Casting in Green Sand Mold;Graphite Sand;Burning-resisting Agent   
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        发布时间：2023-12-18
      • Gong Jinxia
        Issue 5, Pages: 61-62(2004)
        摘要：The reason for Zn build up in lubricated frictional wear test of high Al-Zn base alloy was studied. It was found that the alloy has a strong ability to store and absorb lubricant. The reasonalbe and accurate testing data can be acquired through combusting and volatilizing lubricant absorbed in the alloy by heating.  
        关键词：High Al-Zn Base Alloy;Lubricant;Wear Test   
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        发布时间：2023-12-18
      • Vol. 0, Issue 5, Pages: 62(2004)
          
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        发布时间：2023-12-18
      • Liu Xibo Dong Qiming Liu Ping Jia Shuguo Tian Baohong
        Issue 5, Pages: 63-65(2004)
        摘要：The macro-and microstructures and properties of both red and black ingots of Cu-2.5Fe with varying annealing temperatures were comparatively analyzed. The results showed that the properties of red ingot sample varied slowly and smoothly and grain size became fine during annealing because of uniform distribution of secondary phase resulting in difficulties in cracking during rolling while a lot of characteristics, including high casting stress, coarse grain size during annealing and porosity in grain boundary, were susceptive to cracking during rolling for black ingot sample.  
        关键词：Lead Frame;Casting Stress;Segregation;Coarse Grain   
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      • Vol. 0, Issue 5, Pages: 66-67(2004)
          
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      • Vol. 0, Issue 5, Pages: 67(2004)
          
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      • Vol. 0, Issue 5, Pages: 67(2004)
          
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      • Vol. 0, Issue 5, Pages: 68(2004)
          
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      • Vol. 0, Issue 5, Pages: 69(2004)
          
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      • Vol. 0, Issue 5, Pages: 70(2004)
          
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