最新刊期
      卷 ， 期 1 ， 2000
      • Xie Zhengfang Chen Zhaohui Li Yongqing Zheng Wenwei Hu Haifeng Xiao Jiaoyu
        Issue 1, Pages: 1-3(2000) DOI: 10.15980/j.tzzz.2000.01.001
        摘要：The application of tungsten （W）in polycarbosilane （PCS）derived ceramics was investigated. The results showed that W could decrease efficiently the porosity of the green compact. W could react with gas volatile of PCS during pyrolysis, free carbon and N, to produce new compounds,which increased ceramic yield of PCS. W enhanced the three-point bending strength of the resulted ceramic with a strength of 101 MPa when the volume ration of 9（W） was 15 %,which was 1. 5 times of that of where W was excluded. However,W couldn’t restrain the linear shrinkage of the green compact during pyrolysis. The linear shrinkage was higher with increasing the volume ration of （W）.  
        关键词：Active Filler;Tungsten;Polycarbosilane （PCS）;Ceramic   
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        发布时间：2023-12-18
      • Dong Yinsheng
        Issue 1, Pages: 4-6(2000) DOI: 10.15980/j.tzzz.2000.01.002
        摘要：The plated sheet containing ultrasonic gas atomized rapidly solidifiel Al-Fe-V-St-Zr-Ti aluminum alloy powder was prepared using nickel electroplating at room temperature for studies on microstructure and properties of single powder particle. The powder particles and nickel matrix combined well and the plated sheet could be used to fabricate the specimen for common metallography,observation specimen for TEM, and to realize heat treatment of powders, also to determine the hardness of single powder particle after rapidly solidified and being heat-treated.  
        关键词：Aluminum Alloy;Powder;Microstructure;Property   
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        发布时间：2023-12-18
      • Zhu Yulong Zhai Qijie Huang Weihua Xiao Jin Liu Xueqin
        Issue 1, Pages: 7-9(2000) DOI: 10.15980/j.tzzz.2000.01.003
        摘要：Steel grain-reinforced pure copper cast composite was gotten successfully by suspension casting process and controlling the cooling rate. The results showed that interface grain and pure copper matrix combined well,and the steel grain did not dissolve into copper matrix. There were no pollution of iron element and over diffusion after adding steel grain and the conductivity was as high as 81 %IACS.  
        关键词：Interface;Conductivity;Steel Grain;Coppr Matrix Composite;Suspension Casting   
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        发布时间：2023-12-18
      • Liu Guojun Zhang Kui Zhang Jingxin Xu Jun
        Issue 1, Pages: 10-13(2000) DOI: 10.15980/j.tzzz.2000.01.004
        摘要：The effects of casting process parameters on transformational behavior of primary nondendrite phase and solidification process of ZA27 alloy in stirring are investigated under transient condition. The results show that primary phase in solidification structure evolves into near-spherical fine particles by constant electro-magnetic stirring, and main mechanical properties are similar to those alloys inoculated with Ti-B; with a larger secondary cooling rate, the peritectic reaction decreases and the primary non-dendrite and non-equilibrium eutectic structure increases. It is also found that temperature and stirring rate can control the fraction and distribution of primary phase in ZA27 semi-solid slurry. With the increase of stirring rate or time, the matrix composition become more homogeneous, and the primary phase tends to non-dendrite.  
        关键词：ZA27 Alloy;Electro-magnetic Stirring;Microstructure;Mechanical Properties   
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        发布时间：2023-12-18
      • Issue 1, Pages: 13-15(2000) DOI: 10.15980/j.tzzz.2000.01.005
        摘要：Modification mechanism and existing form of Sb and Mg in Al-Si alloy were studied by using optical microscope and scanning electron microscope. The results showed that Sb and Mg exist as the form of Mg3Sb2 Mg3Sb2 as heterogeneous nucleation of eutectic silicon promotes nucleation of eutectic silicon and hence realize the modification aim during solidification process.  
        关键词：Al-Si Alloy;Sb;Mg;Eutectic Silicon;Heterogeneous Nucleation   
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        发布时间：2023-12-18
      • Issue 1, Pages: 16-19(2000) DOI: 10.15980/j.tzzz.2000.01.006
        摘要：A series of continuous casting tests for Fe-Cr-C white cast iron and Fe-Mn-C high manganese steel were carried out with a self-made semisolid metal continuous casting machine. Based on the result, influence of process parameters on the breakout or breakage was studied. The condition and mechanism of breakout or breakage was discussed. The technical methods to prevent this defects were offered.  
        关键词：Semisolid Metal Continuous Casting;Breakout;Breakage;Mechanism   
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        发布时间：2023-12-18
      • Issue 1, Pages: 20-22(2000) DOI: 10.15980/j.tzzz.2000.01.007
        摘要：CuAINi alloy wires of 1. 5 mm in diameter were cast by heated mold continuous casting process. Smooth surface wires with directional solidification structure were obtained at a mold temperature 1110 ℃. The quantity of crystal grains is fewer and boundary is straight at cast speed 50 mm/min, while the number of crystal grains increase and the grain boundary is tortuous at 80 mm/min. It has great advantages to obtain Cu based shape memory alloy by the heated mold continuous casting process, which can not only avoide the difficulty of plastic formation but also gain directional solidification structure and improve alloy’s property.  
        关键词：Heated Mold Continuous Casting;Single Crystal;Shape Memory Alloy;CuAINi   
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        发布时间：2023-12-18
      • Li Shuangshou Zhu Yuefeng Zeng Daben Wang Xiaoqiang
        Issue 1, Pages: 23-25(2000) DOI: 10.15980/j.tzzz.2000.01.008
        摘要：With the calibrated aluminum association TP-1 standard test procedure,refining effects of Al-10RE,Al-5Ti-1B and Al-5Ti-1B-10RE master alloy on A356. 2 alloy were evaluated to optimize the refining process of alloy molten in aluminum alloy wheels manufacture. It is showed that RE elements in Al-5Ti-1B-10RE master alloy can not only prevent grain size from fading effectively, but also improve the refining and modifying effects of Ti,B, Sr on microstructure of A356. 2 alloy to some extent. TP-l standard procedure is a kind of simple,visual and exact on line method to evaluate the refining effects of master alloys.  
        关键词：TP-1 Standard Test Procedure;Master Alloy;Aluminum Alloy;Refining Treatment   
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        发布时间：2023-12-18
      • Issue 1, Pages: 26-28(2000) DOI: 10.15980/j.tzzz.2000.01.009
        摘要：Effects of various process variables on average flow velocity of LFC liquid aluminum in the mold have been studied. The results show that thermal insulation coating and suitable coating thickness are helpful to improving the filling velocity of liquid aluminum. The higher the pouring temperature or the larger the sprue hollow area rate is,the faster the filling velocity of molten aluminum is. The larger the thickness of pattern is,the slower the filling velocity is. It will be helpful to improving the filling velocity when the sprue length and sprue areas are controlled to some extent. Vacuum pressure will improve the filling velocity greatly.  
        关键词：Aluminum Alloy;LFC Process;Mold Filling   
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        发布时间：2023-12-18
      • Yao Wei
        Issue 1, Pages: 29-31(2000) DOI: 10.15980/j.tzzz.2000.01.010
        摘要：Based on improvement design of J455 low-pressure casting machine. the approachment for improving reliability of low-pressure casting machine is expounded.  
        关键词：Low-pressure Casting Machine;Closing Constructure;Reliable Design   
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        发布时间：2023-12-18
      • Issue 1, Pages: 32-33(2000) DOI: 10.15980/j.tzzz.2000.01.011
        摘要：Application of ceramic foam filter in investment casting of double stationary corona blades of turbines is described. The use of ceramic foam filter makes slag inclusion decrease greatly. It is an efficient way to obtain double corona stationary blades with little or no slag inclusion.  
        关键词：Ceramic Foam Filter;Double Corona Stationary Blades;Investment Casting   
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        发布时间：2023-12-18
      • Vol. 0, Issue 1, Pages: 33(2000)
          
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        发布时间：2023-12-18
      • Xu Dingru
        Issue 1, Pages: 34-35(2000) DOI: 10.15980/j.tzzz.2000.01.012
        摘要：Three kinds of injection sleeves construction,materials,surface treatment and application ranges of floating end face seal ring by die casting are expounded.  
        关键词：Die Casting;Injection Sleeve;Floating End Face Seal Ring   
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        发布时间：2023-12-18
      • Chen Xianhe
        Issue 1, Pages: 36-37(2000) DOI: 10.15980/j.tzzz.2000.01.013
        摘要：Common defects of ZCuSn10P1 bimetallic axle bush are introduced and reasons causing defects are analyzed. Effective prevention methods are offered based on that.  
        关键词：ZCuSn10P1 Alloy;Bimetallic Axle Bush;Defect   
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        发布时间：2023-12-18
      • Li Haishu
        Issue 1, Pages: 38-39(2000) DOI: 10.15980/j.tzzz.2000.01.014
        摘要：Through analyzing for requirement of shell strength and various hardeners,good economical benefit has been achieved by using technology of NH4Cl and AlCl3, crystal mixed hardener with the same binder and refractory staff.  
        关键词：Investment Casting;Shell;Strength;Hardener   
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        发布时间：2023-12-18
      • Zhao Zhonghe
        Issue 1, Pages: 40-41(2000) DOI: 10.15980/j.tzzz.2000.01.015
        摘要：Process design for crankshaft balance piece of engine by investment casting is analyzed. The practical process scheme of batchs of production has been made.  
        关键词：Investment Casting;Solidification;Feeding   
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        发布时间：2023-12-18
      • Vol. 0, Issue 1, Pages: 41(2000) DOI: 10.15980/j.tzzz.2000.01.016
          
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        发布时间：2023-12-18
      • Issue 1, Pages: 42-44(2000) DOI: 10.15980/j.tzzz.2000.01.017
        摘要：Feeding mechanism and designing method of casting riser have been studied.According to designing information and realistic procduction,a practical computer program module was developed to design riser by combining MFC with ARX. The module can not only be a main module of InteCastCAD, but also run independently .It has offered friendly user interface and independent data operation technol- ogy. This program has improved effciency greatly and accuracy of riser design and has a bright applica- tion prospect.  
          
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        发布时间：2023-12-18
      • Issue 1, Pages: 45-48(2000) DOI: 10.15980/j.tzzz.2000.01.018
        摘要：Temperature distribution of steel castings is simulated and shrinkage or porosity is predicted for a special sand casting process-repouring process combined with real manufacture conditions. At the same time, the weight of castings, riser and gating system is calculated accurately to meet the demand of the process design. Temperature field simulation, prediction for shrinkage or porosity and calculation of weight play an assistant role in design. According to the simulated results, a new process has been designed and used for real manufacture to reach satisfactory quality. The computer solidification simulation technology can play a good role in foundry process design.  
        关键词：Solidification Simulation;Repouring Process;Steel Casting   
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        发布时间：2023-12-18
      • Vol. 0, Issue 1, Pages: 48(2000) DOI: 10.15980/j.tzzz.2000.01.019
          
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        发布时间：2023-12-18
      • Chen Bing
        Issue 1, Pages: 49-51(2000) DOI: 10.15980/j.tzzz.2000.01.020
        摘要：The United States Investment Casting Institute standard-"Standard Test Procedures on Pattern Materials"（ICI-B-7）was introduced briefly and compared with the chinese national standard （GB/T14235 - 93 ）and aviation standard （HB5350 - 86 ） - "Performance Measurement on Pattern Materials"for investment casting. Suggestion was offered for further work based on this comparison.  
          
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        发布时间：2023-12-18
      • Wang Yizhi
        Issue 1, Pages: 52-53(2000) DOI: 10.15980/j.tzzz.2000.01.021
        摘要：Different rations of chemical composition of 380 die casting alloy are analyzed. The results show that 380 alloy with high alloy has a higher tensile strength,yielding strength and hardness while 380 with low alloy has higher elongation. Chemical composition of 380 alloy with excellent comprehensive properties should be proper.  
        关键词：380 Die Cast Alloy;Chemical Composition;Mechanical Properties   
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        发布时间：2023-12-18
      • Issue 1, Pages: 54-56(2000) DOI: 10.15980/j.tzzz.2000.01.022
        摘要：Present research status of potassium titanate whisker reinforced aluminum matrix composites has been summarized. The characteristics of potassium titanate whisker, the fabrication process, properties and the interfacial microstructure are discussed. The existing problem and future research tendency are also indicated.  
        关键词：Potassium Titanate Whisker;Aluminum Matrix Composite;Fabrication Process;Interfacial Microstructures   
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        发布时间：2023-12-18
      • Vol. 0, Issue 1, Pages: 56(2000) DOI: 10.15980/j.tzzz.2000.01.023
          
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      • Vol. 0, Issue 1, Pages: 57(2000) DOI: 10.15980/j.tzzz.2000.01.024
          
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      • Vol. 0, Issue 1, Pages: 58(2000) DOI: 10.15980/j.tzzz.2000.01.025
          
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      • Vol. 0, Issue 1, Pages: 59(2000) DOI: 10.15980/j.tzzz.2000.01.026
          
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        发布时间：2023-12-18
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