最新刊期
      卷 ， 期 6 ， 1997
      • Chen Ziyong\ Chen Yuyong\ Shu Qun\ An Geying
        Issue 6, (1997)
        摘要：The TiB 2/Al 4.5Cu composite was fabricated by K 2TiF 6/KBF 4 mixed salts reaction in Al 4.5Cu molten metal. The solidification microstructure and mechanical properties of the composite was researched by SEM, XRD and MTS etc. The reinforced TiB 2 particle less than 2 μm, with nearly spheroidal form was uniformly distributed in the matrix, reinforcing and refining metal matrix. Moreover, the TiB 2 particle was combined with AlCu4 alloy well. When the K 5TiF 6 and KBF 4 mixed salts addition is 20% of the metal matrix, the mechanical properties of the composite is best, UTS is 352 MPa, EL is 4.4% , HB is 146.  
        关键词：Mixed Salts Reaction;Metal Matrix Composite;TiB 2   
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        发布时间：2023-12-18
      • Wu Zhichao Jiang Daoyu Huang Naiyu
        Issue 6, (1997)
        摘要：The influence of various process parameters on the liquid metal filling velocity in the mold was studied in gray iron casting produced by the expandable pattern casting with vacuum （EPC V process）. The results show the relative importance of factors, from most significant to least significant: foam material, metallostatic head, the permeability of the coating, pouring temperature. The interaction of foam material with the coating also have very important influence on the filling velocity.  
        关键词：Expandable Pattern Casting;Filling Velocity;Process Parameters   
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        发布时间：2023-12-18
      • Gao Zhiqiang Wang Yunhua Su Huaqin
        Issue 6, (1997)
        摘要：The numerical methods widely adopted in simulating casting process are summarized in this paper, and the main characteristics of semi solid alloy thixocasting are analyzed. It came to conclusion that the Lagrangian method with locally refined mesh is more effective to simulate this forming process when compared to Eulerian method. Finally, an approach to its algorithm is given.  
        关键词：Thixocasting;Lagrangian Method;Semi Solid;Numerical Simulation   
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        发布时间：2023-12-18
      • Wu Zhicheng Zhang Jun Duan Hanqiao Gao Jianhua
        Issue 6, (1997)
        摘要：The steel shot reinforced ZA27 composite （ZSC in brief） which was fabricated easily by stirring melt and pressure casting process had a compact structure and good machinability. The steel shots combined with ZA27 matrix metallurgically. The wear resisting and antifriction properties of ZSC increased as the amount of steel shots increasing and were better than that of ZA27 under same conditions. ZSC had a self lubricating ability when there was no lubrication and under oil lubrication its wear resisting property was more excellent when friction rate and load increased.  
        关键词：Composite;Steel Shot;ZA27 Alloy;Friction Wear;Microstructure   
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        发布时间：2023-12-18
      • Wang Peiyu Xu Shuqing Chen Fulin
        Issue 6, (1997)
        摘要：Cerium could refine the crystal grain of Zn Cu alloys. Therefore, it not only increases mechanical properties, but also improves age inhibiting property of the alloys.  
        关键词：Crystal Grain;Mechanical Properties;Age inhibiting Properties   
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        发布时间：2023-12-18
      • Si Naichao Wu Jing
        Issue 6, (1997)
        摘要：The measures of crack elimination for Al Si ingot are suggested and the better results are obtained. The relevant theory has been deeply discussed.  
        关键词：Al Si Alloy;Crack Failure;Refining Modification Treatment   
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        发布时间：2023-12-18
      • Zhou Yun Sun Yong Zhou Zhao
        Issue 6, (1997)
        摘要：This paper deals with the influence of Cu addition and （Ti+B） modifier on structure and properties of ZA12 alloy. Experimental results show that strength and hardness of alloy increase, and toughness and ductility reduce with increasing Cu addition. （Ti+B） modifier obviously improve structure and properties of ZA12 alloy.  
        关键词：ZA12;Modifier;Cu Addition   
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        发布时间：2023-12-18
      • Li Yuancai Tong Xinling Li Liangjie Wang Wenqing
        Issue 6, (1997)
        摘要：In this paper the pinholes in the socket of centrifugal cast ductile iron pipe and their formation have been analyzed. The results show that the major gases led to pinholes formation in socket are N 2, H 2, ect. form sand core made of nitrogen containing resin binder. The oxide inclusion acts as the center for these bubbles nucleation and growth. When the casting solidification speed was equal to bubbles escape speed. The pinholes are formed.  
        关键词：Centrifugal Cast Ductile Iron Pipe;Pinhole;Socket   
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        发布时间：2023-12-18
      • Huang Mingyu Wang Dianjun Gu Anzhi Gu Weibiao\ Yao Xingtian\ Chen Xitao
        Issue 6, (1997)
        摘要：Isothermal Superplastic compression test has been made for superplasticity Zn 22%Al alloy. The relationship between strain strength and flow stress and hardness under same temperature and strain rate was studied. Also the relationship between strain rate and flow stress under same temperature and strain degree was presented.  
        关键词：Zn Al Alloy;Superplasticity;Superplastic Compression   
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        发布时间：2023-12-18
      • Wang Yuzhong
        Issue 6, (1997)
        摘要：Be Cu alloy charactistics and its application to dies for toy and plastic product were introduced. Smelting, pouring, heat treatment and safety protection were described.  
        关键词：Be Cu Alloy;Die;Toy;Plastic Product   
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        发布时间：2023-12-18
      • Huang Liangyu
        Issue 6, (1997)
        摘要：Some papers on the 4th Asian Foundry Congress, concerning non ferrous alloys and special casting are briefly commented, including recent development in modification of Al Si Alloy and grain refinement of Al alloys, new aspect of crack origin in Al Si Mg alloy the influence of iron content on casting hole in aluminium casting, quantitative prediction of gas evolution caused by shell core, squeeze casting of aluminium alloys and ignitionproof magnesium alloys et al.  
        关键词：The 4th Asian Foundry Congress;Special Casting;Non ferrous Alloys   
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        发布时间：2023-12-18
      • Zhu Lijuan
        Issue 6, (1997)
        摘要：From theory of metal solidification and fluid mechanics, the paper established the mathematical model which described feeding phenomend on the solidification process of foundry alloy. By the analysis and calculation, it is guantitatively showed that traditional technique is reasonable and is pointed out that there are some biases in the techniques.  
        关键词：Solidification;Feeding;Temperature Gradient;Mathematical Model   
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        发布时间：2023-12-18
      • Shi Xingli Zheng Ziqiao
        Issue 6, (1997)
        摘要：The copper crucible for 25 kg vacuum skull furnace is systematically studied. The various factors effecting on the copper crucible failure are analyzed and discussed. The effective methods of elongating the service life of the copper crucible is indicated. The research results have been used in production successfully and considerable economical benefit has been achieved.  
        关键词：Vacuum Skull Furnace;Copper Crucible;Ti Metal and Ti Alloy   
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        发布时间：2023-12-18
      • Wu Jinzhang Xuan Yinhua
        Issue 6, (1997)
        摘要：Production technology of complicate Al alloy investment casting with thin walled section has been discussed. It is possible to obtain highly qualitative investment castings by means of vacuum pouring and crystallization under pressure, reasonable design of gating system, selection of wax and binder with better performance.  
        关键词：Vacuum Pouring;Crystallization under Pressure;Compactness   
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        发布时间：2023-12-18
      • Wei Danhua
        Issue 6, (1997)
        摘要：Grand guanyin copper figure was cast firstly in plaster mold with investment pattern and in green sand mold with wax pattern respectively, and then individual cast parts were mounted together by welding. It is practically verified that this method exhibited less expense, easy operation, cast wall with uniform thickness, deformation decrease and cast defects reduction.  
        关键词：Investment Pattern in Plaster Mold;Wax Pattern in Green Sand Mold;Separated Casting   
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        发布时间：2023-12-18
      • Pan Zhengyan Du Shiliang
        Issue 6, (1997)
        摘要：In this paper, There are strong gas absorption properties and special decreasing consumption process of strontium in Sr Modified Al Si Mg liquid alloy. In the batch production process, special attention sholud be paid for Sr addtion method and quantity in liquid alloy.  
        关键词：Sr Modified Al Alloy;Gas Absorption;Decreasing Consumption Process of Sr in Alloy   
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        发布时间：2023-12-18
      • Yuan Yigao
        Issue 6, (1997)
        摘要：By means of hot etching the gas hole of steel casting in investment casting was investigated. The results indicate that the penetrating gas hole is the main type of gas hole for precious steel casting. The way to prevent the occurance from penetrating gas hole was analyzed.  
        关键词：Investment Casting;Steel Casting;Gas Hole;Amount of Generating Gas   
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        发布时间：2023-12-18
      • Issue 6, (1997)
        摘要：低压铸造多杈分流式浇注套的设计与应用３６１１工厂赵金生于天任王坤法ＤｅｓｉｇｎａｎｄＡｐｐｌｉｃａｔｉｏｎｏｆＭｕｌｔｉ┐ＤｉｓｃｒｅｔｅＦｌｏｗＰｏｕｒｉｎｇＳｌｅｖｅｉｎＬｏｗＰｒｅｓｕｒｅＣａｓｔｉｎｇＺｈａｏＪｉｎｓｈｅｎｇＹｕＴｉａｎｒｅ...  
          
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        发布时间：2023-12-18
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