最新刊期
      卷 ， 期 4 ， 1999
      • Zhu Dachuan Chen Jiazhao Zhou Xiuli Tu Mingjing
        Issue 4, (1999)
        摘要：A series of copper ingots with smooth surface and inner soundness have been gotten for different lithium additions to molten copper.The effect of lithium on casting structures of pure coppers has been researched.The results showed that the dendritic crystal area of alloy was eliminated by Li addition and the equiaxed strcture was substitued for dentritic crystal.On the basis of solidification theory and DTA curve,the reason for structure transformation is explained.  
        关键词：Lithium;Pure Copper;Casting Dendritic Structure   
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        发布时间：2023-12-18
      • Xia Qing Yang Liushuan Liu Yamin Yang Dixin
        Issue 4, (1999)
        摘要：Through the microstructure observation and analysis of original and Mn added Fe rich Al Si Ti melt in natural deposition,it is shown that there is almost no change of iron phase in the original Fe rich Al Si Ti deposited melt while a large number of Fe phase has been removed in the Mn added Fe rich Al Si Ti deposited melt.  
        关键词：Alloying Element;Aluminum Alloy;Additive   
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        发布时间：2023-12-18
      • Zhang Jiyue Wang Zhimin Huang Jirong
        Issue 4, (1999)
        摘要：The influence of modification treated with a new compound modifier on mechanical properties and microstructure of AlSi7Mg alloy has been investigated.The change of microstructure during aging treatment has been studied by means of TEM.The results show that the new modifier can increase the mechanical properties of AlSi7Mg alloy with the ultimate tensile strength 351.7 MPa and the elongation 7.79% after 6 hours solution treatment at 535 ℃ and 6 hours aging treatment at 150 ℃.The TEM analysis shows that during aging treatment not only Mg 2Si phase but also a new reinforced phase are precipitated in modified AlSi7Mg alloy.It is considered that the pricipitation process of the new phase is similar to that of Mg 2Si phase and lower in the pricipitating temperature.Therefore the AlSi7Mg alloy both the higher strength and elongation at T 5 treatment.  
        关键词：AlSi7Mg Alloy;Microstructure;Mechanical Properties;Compound Modifier   
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        发布时间：2023-12-18
      • Xu Daqing Luo Jirong Huang Naiyu
        Issue 4, (1999)
        摘要：In this paper the sliding wear resistance,abrasive wear resistance and erosion resistance of Tungsten Carbide particulate compositing layers by cast in place hardfacing were tested.The results show that the Tungsten Carbide particulate compositing layers by cast in place hardfacing under different wear conditions have different wear resistance mechanisms and failure patters.It is of importance to select and make cast in place hardfacing processes properly according to different working condition.  
        关键词：Cast in Place Hardfacing;Tungsten Carbide;Sliding Wear Resistance;Abrasive Wear Resistance;Erosion Resistance   
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        发布时间：2023-12-18
      • Sun Wanliang Luo Jirong
        Issue 4, (1999)
        摘要：The coating permeability in evaluating gas exhausting ability of actual coating wafer is indirect and limited in lost foam casting.It is better and visual to use a new parameter called v .The method of calculating the gas exhaust ability is given and proved by actual example.  
        关键词：LFC;Actual Coating Wafer;Gas Exhausting Ability   
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        发布时间：2023-12-18
      • Wang Guiming
        Issue 4, (1999)
        摘要：The high speed steel as a roll material significantly increased the service life of hot and cold strip mill work rolls.But it is very difficult to produce the HSS compound rolls by conventional methods including centrifugal casting.Several new ways for making HSS compound rolls are introduced.By those methods HSS compound rolls are manufactured with good bonding at the interface of the core cladding alloys.Of the methods the materials with very different chemical composition can be conveniently cladded on the core alloy.  
        关键词：Compound Roll;High Speed Steel（HSS）;Electroslag Remelting;Continuous Csating;Spary   
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        发布时间：2023-12-18
      • Zhou Bo Zhao Minghan Li Yuan Xiao Yugui Liu Fuping Yin Fajie Tian Qiuping Xin Wenqi
        Issue 4, (1999)
        摘要：By using silica sol coating for mold shell making to produce allowance free superalloy thin walled vane in investment casting,the crack on the vane edge often appeared due to high strength of mold shell.Based on the analysis of crack formation of the vane,an aimed proposal is given for mold shell making with compound coating.  
        关键词：Coating;Thin Walled Vane;Porous Mold Shell   
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        发布时间：2023-12-18
      • Hou Linchong Zhang Xinhong
        Issue 4, (1999)
        摘要：In this paper,the new technique of gravity die casting for heavy aluminum alloy piston is introduced.  
        关键词：Aluminum Alloy;Piston;Gravity Die Casting   
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        发布时间：2023-12-18
      • Tang Daquan Zhao Haibo
        Issue 4, (1999)
        摘要：This paper expounded the influences of pouring temperature and die temperature,upon diecasting manufacture and then explained the importance of enhancing temperature control in die casting.  
        关键词：Temperature;Pouring Temperature;Die Temperature   
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        发布时间：2023-12-18
      • Wu Chunmiao
        Issue 4, (1999)
        摘要：The newly developed method of gating system design for zinc alloy in die casting is introduced.Recently,the widely applied taper runner in the world is favorable for manufacturing of zinc alloy with high quality in die casting.  
        关键词：Die Casting for Zinc Alloy;Gating System;Tapered Runner;Flow Angle   
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        发布时间：2023-12-18
      • Qu Wanchun Qi Guangxia Wang Hongwei Dong Xiuqi
        Issue 4, (1999)
        摘要：This paper introduces the choice principles of solidification ways,pouring location and mould wall thickness in low pressure casting and counter pressure casting.  
        关键词：Low Pressure Casting;Counter Pressure Casting;Process Design;Parameters Choice   
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        发布时间：2023-12-18
      • Issue 4, (1999)
        摘要：在有色合金熔炼中使用的工频感应电炉（包括有芯感应电炉，无芯感应电炉），有许多是单相大功率（１００ｋＷ以上）负载。为了解决三相供电平衡以及电炉本身需要多种供电电压的问题，普遍采用容抗平衡装置和多种调压变压器，但这种装置存在结构繁琐，设备费用高，电能消耗...  
          
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        发布时间：2023-12-18
      • Shen Baikui
        Issue 4, (1999)
        摘要：According to the size of casting copper buddhism portrait,the method for stage division is proposed.The structure of copper walled plate and inner frame for copper portrait with different size is expounded.Also the practical example is listed.  
        关键词：Copper Alloy;Casting;buddhism Portrait   
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        发布时间：2023-12-18
      • Wang Xinying Xie Chengmu
        Issue 4, (1999)
        摘要：This article presents general situation of titanium casting industrial development in China,researching and developing of titanium casting alloys,titanium melting and casting equipment,studying and developing of its casting technology,casting quality inspection and application,existing problems and titanium casting development in the future.  
        关键词：Titanium Casting Alloys;Casting;Melting   
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        发布时间：2023-12-18
      • Kang Xinting
        Issue 4, (1999)
        摘要：This paper introduces the conception of environmental conscious materials,reviews the advantages of the nonferrous metals based on Al and Ti alloys,as the ecomaterials,for automobiles,astronavigation,deep sea exploit and super high buildings,and points out that the nonferrous metals used as ecomaterials must lay stress on returning nature,recycling of materials and harmonizing ecological circumstances.These are the necessary facts for the design and production of nonferrous metals and alloys and composites.  
        关键词：Ecomaterials;Nonferrous Metal;Al Alloy;Ti Alloy   
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        发布时间：2023-12-18
      • Chen Jincheng
        Issue 4, (1999)
        摘要：In the 21st century,die casting industry will develop continuously and rapidly.Die castings of light metals including aluminum,magnesium and titanium will be occupied in leading status in market.Die casting technological process is decided by the method of metal pouring into die casting machine.Thus,die casting industry will take place a whole series of great innovation as the evolution of metal pouring into the machine from liquid,semi solid through solid will be made.  
        关键词：Die Casting;Development;Innovation;Prospect   
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        发布时间：2023-12-18
      • Zhu Shigen
        Issue 4, (1999)
        摘要：This paper describes the present situation and recent progress of resin coated sand used for shell moulding,including mixing method,production equipment,raw material,product sort development ect.in the decade.  
        关键词：Resin Coated Sand;Shell Moulding;Progress   
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        发布时间：2023-12-18
      • Wang Gui Chen Bing
        Issue 4, (1999)
        摘要：A concurrent engineering environment for developing near net shape casting has been constructed for complicated casting and moulding tools design castability evaluation;casting process simulation and rapid prototype fabrication etc.This concurrent engineering environment has been practically used for developing a number of complicated castings.The application results show that this system is a very powerful tool for optimizing the complicated castings design,improving their quality,shortening lead time,and reducing cost.  
          
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        发布时间：2023-12-18
      • Xiu Yuping
        Issue 4, (1999)
        摘要：In this paper,the features and development of crucible furnace melting mainly used for nonferrous alloys have been introduced briefly.The domestic and overseas experiences on the high efficient processing have been remarked.  
        关键词：Crucible Furnace;Melting;Nonferrous Alloys   
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        发布时间：2023-12-18
      • Issue 4, (1999)
        摘要：多年以来，我厂熔化铜合金的主要设备是无芯感应中频炉，炉体内衬为石墨坩埚，外衬用石英砂打结而成。石墨坩埚的使用寿命有限。质量好一点的可用３０炉次左右，差一些的只有十数次，有的仅用一二次就报废了，更有甚者烘炉时石墨坩埚就开裂。只好把炉衬打掉重新做。这样，...  
          
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        发布时间：2023-12-18
      • Issue 4, (1999)
        摘要：我国已有十余条奥托昆普公司的上引法铜杆生产线，现将我厂生产１４．４ｍｍ铜杆的一些经验和技术数据介绍如下。１对原材料的要求原材料铜板质量直接影响铸件质量，除要求成分符合要求外，其外观应无开花粒子、酸迹、铜锈、灰砂等缺陷，因此在操作时应先对进厂原料进行...  
          
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        发布时间：2023-12-18
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