最新刊期
      卷 ， 期 2 ， 1999
      • Fan ZitianHuang NaiyuSong XiangjunChen Zongmeng
        Issue 2, (1999)
        摘要：In this paper,the factors of affecting the sintered strength of the coated sand mold （or core） by Selected Laser Sintering （SLS） are analyzed,the measures of improving the strength are discussed,and the new methods for elevating the strength,and part precision and obtaining rapid forming velocity are also discussed.  
        关键词：Rapid Prototyping;Selected Laser Sintering （SLS）;the Coated Sand Mold （or Core）;Sintered Strength   
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        发布时间：2023-12-18
      • Ding HongshengGuo JingjieJia Jun
        Issue 2, (1999)
        摘要：In order to solve the problem of moldfilling of walled castings,the moldfilling ability of A357 alloy under the travelling electromagnetic field has been studied experimentally by using large electromagnetic casting equipment in this paper.The results show that the moldfilling ability of thick walled casting has been larger than that of thin walled casting under the same conditions of the travelling electromagnetic field.Meanwhile,the moldfilling ability of the same walled castings with the travelling electromagnetic field has been over 50% larger than that without the field.  
        关键词：Travelling Electromagnetic Field;MoldFilling Ability;A357 Alloy   
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        发布时间：2023-12-18
      • Yang ChangheSun Jun
        Issue 2, (1999)
        摘要：The coating protection could prevent the graphite rotator for molten Alpurification from the oxidation and prolong its service life effectively.The optimum coating constituent and coatingdrying technology have been determined successfully.This research has provided the theoretical and experimental basis for the practical application.  
        关键词：Refinement of Molten Al;Purification of Molten Al;Graphite Rotator;Coating   
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        发布时间：2023-12-18
      • Xie JingpeiZhu YaominWang XiaoyingChen Quande
        Issue 2, (1999)
        摘要：The ZA alloy with high wearresistance and damping has been investigaed through improving heat treatment and adding rare earth.The alloy has been used for nut of the friction pressing machine instead of copper alloy.The results show that wear resistance was 3.5 times higher than that of copper alloy, damping property（1/Q10-3） was increased from 0.478 to 3.15.  
        关键词：ZA Alloy;Damping Property;RE   
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        发布时间：2023-12-18
      • SuYanqingRen ZhijiangGuo JingjieJia Jun
        Issue 2, (1999)
        摘要：The thermodynamic model of the dissolution of oxygen in Ti6Al4V alloy was set up.Based on the model the oxygen solubility in Tialloys was calculated and the factors influcing on oxygen solubility were analyzed.The calculation results show that the temperature of Ti6Al4V alloy melt has little effect on oxygen dissolution while the oxygen partial pressure in the melting chamber is the main factor to determine the oxygen dissolution in Ti alloy.The calculated results are accordant with the experimental results.  
        关键词：Ti6Al4V Alloy;Vacuum Melting;Oxygen Solubility   
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        发布时间：2023-12-18
      • Liu ZhimingQu WanchunWang Hongwei
        Issue 2, (1999)
        摘要：This paper deals with the flowing phenomena of liquid metal in lift tube,crucible,and mould cavity in low pressure casting.The liquid metal flow during mould filling in bottom gating system and its influence on the casting quality are introduced emphatically.  
          
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        发布时间：2023-12-18
      • Cui ZhanlingJiang BujuYan ShuangjingLu Zhigang
        Issue 2, (1999)
        摘要：Rapid Metallic Die Manufacturing is a new diemaking technology as a result of the application of RPM to dies production.In order to manufacture highquality metallic dies in ceramic investment casting much attention has been paid to preparation of hydrolytic solution of ethyl silicate,refractory grain distribution,preparation of ceramic slury,selection of catalyzers,process of spout,process of firing,etc.A systematic research has been carried out to develop a set of Laminated Object Manufacturing （LOM） prototypes processes for high quality metallic dies in ceramic investment casting.The success of these processes has been confirmed by real production.  
        关键词：Rapid Metallic Die;Ceramic Investment Casting;Rapid Prototype   
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        发布时间：2023-12-18
      • Wang NingBao Yin
        Issue 2, (1999)
        摘要：This paper deals with some research work of the selection of diatomite waterbased coating components for centrifugal casting iron pipe in permanent mold.When components of coating are seleted,the obvious difference in the properties of the same kind of materials with different sources is emphasized and the strict screening is needed.  
        关键词：Centrifugal Casting Iron Pipe;Diatomite Powder;Coating   
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        发布时间：2023-12-18
      • Guo HongbinSun Yufeng
        Issue 2, (1999)
        摘要：Based on the renovation and technological analysis of gating system in the import die casting die for AG50 left crack part,the positioning and amount of gate and ingate in gating system,as well as the control of flow direction and flow cross point at ingate and the positioning of reasonable overflowing system during melt flowing through ingate are examined for elevating finished casting yield.  
        关键词：Gating System;Gate;Ingate;Melt;Flow Velocity;Flow direction   
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        发布时间：2023-12-18
      • Gao YalongSun Qin
        Issue 2, (1999)
        摘要：The convenient,suitable and high precision die was made,by means of properly designing die structure and pertinently selecting machining methods,for the blade with shroud in three dimensional moulding.Using proper hot working methods,the deformation was controled.The appropriate processes were designed for machining,polishing,and assembling.It was ensured that the tolorances of the whole circular outlet area ranged less than 1%, so that the assembly effect in power plant was better than that of the expected goal.  
        关键词：Static Blade;Investment Casting;CAD;CAM   
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        发布时间：2023-12-18
      • Wang MingfaZheng Liming
        Issue 2, (1999)
        摘要：The paper introduced the improved device for reducing water content in pattern material and pipe transmission for recovered material during waxloss process.  
        关键词：MiddleMelting Point Pattern Material;Water Content Reduction;Pipe Transmission   
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        发布时间：2023-12-18
      • Li JinxiaShi JianminZhang YunliangLiang XiangyuYang Liying
        Issue 2, (1999)
        摘要：In this artical the selection of material of cast alloy tool steel roller rings for straightener,manufacturing process and related technical properties are reviewed.Adopt of 165Cr12MoVW（X165CrMoV12）steel grade for roller rings by centrifugal casting,casting ring drawing from hot molding for slow cooling and quenchingtempering heat treatment at low temperatures are proposed.165Cr12MoVW alloy tool steel rings exhibit higher hardness,better wear resistance,shorter production period and better economic benefit than conventional forged 9Cr2Mo material.  
        关键词：Cr12MoVW Alloy Tool Steel;Centrifugal Casting;QuenchingTempering Forging Replacement by Casting;Heat Treatment at low Temperature   
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        发布时间：2023-12-18
      • Tian DezongLu EnchengDuan Yafang
        Issue 2, (1999)
        摘要：The factors that tin bronze sleeve of centrifual casting tended to the defects of gas cavity,double skin,cold shut etc,were analyzed.Through controlling of centrifugal casting rotational speed,pouring temperature,pouring rate,pouring cup shape,die working temperature,die and coating etc.The highquality tine bronze sleeve was produced.  
        关键词：Centrifugal Casting;Tin Bronze;Sleeve   
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        发布时间：2023-12-18
      • Liu ShunhuaChen GuangjunJiao Yuefeng
        Issue 2, (1999)
        摘要：ZnNi master alloy melting with molten salts cover is referred.The melting technology is proposed for reducing pollution and metallic Zinc loss.  
        关键词：Hot Dipping;ZnNi Master Alloy;Melting;Molten Salts   
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        发布时间：2023-12-18
      • Chen Jiafu
        Issue 2, (1999)
        摘要：This papar deals with the quality of crystallizer damp block by using small stock.The reasonable technology is proposed to meet the performance requirements for the damp block in contimuous production.  
        关键词：Crystallizer;Damp Block;Quality Control   
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        发布时间：2023-12-18
      • Liu RuixiangChen LiliangYan ChongLing Hantong
        Issue 2, (1999)
        摘要：The method based on difference unit in FDM was used for graphic processing of solidification simulaton,that spared a lot of calculations needed on every unit.This paper introduced how to show the temperature distribution and the solidification of liquid,as well as the fluid flow in the casting mold etc.dynamiclly.The commercial software Intecast developed for graphic Processing of soliclification scinulation has been used successfully in many casting phants.  
        关键词：Solidification Simulation;Visualization;FDM;Dynamic Display Frame;Animation;Post Processing   
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        发布时间：2023-12-18
      • Wen XinghuoXiong ShoumeiJia LiangrongLiu Baicheng
        Issue 2, (1999)
        摘要：Based on the filling patterns of cylindrical castings in the Low Pressure Die Casting （LPDC） process, a simplified mold filling simulation software was developed and applied to the mold filling simulation of LPDC for aluminum wheel castings.Compared to the SOLAVOF algorithm simulation results, the simplified simulation results show that both filling sequence and temperature distribution of the wheel casting are resonable.The main purpose of this software is to provide a correct initial temperature distribution in the casting for the subsequent solidification simulation.The running time of the simplified mold filling simulation software is quite short and will meet the requirements of practical application.  
        关键词：Mold Filling Simulation;Low Pressure Die Casting;Wheel Casting;Simplified Method   
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        发布时间：2023-12-18
      • Shu DaSun BaodeWang JunLi TianxiaoXu ZhenmingZhou Yaohe
        Issue 2, (1999)
        摘要：Melt Purityporositymechanical properties relationships in casting aluminum alloys have been reviewed in this paper.Interacting with porosity,dissolved hydrogen and nonmetallic inclusions greatly impair both mechanical properties and reliability of castings.Accordingly,improving melt purified level is essential to produce high quality products.At present,melt purityproperty relationships as well as online evaluation standards of melt purity still need further study.  
        关键词：Aluminum Alloys;Melt Parity;Porosity;Mechanical Properties   
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        发布时间：2023-12-18
      • Li ZideChen Meiyi
        Issue 2, (1999)
        摘要：Various casting processes are used abroad for art foundry,such as lost wax process,plaster mould process,sodium silicate CO2 process,resin sand process etc.Much attention is paid to technical specialist training.Some better examples for art in combination with foundry are used for reference.  
        关键词：Art Foundry;Technology processes;Art in Combination with Foundry   
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        发布时间：2023-12-18
      • Issue 2, (1999)
        摘要：１铸造过滤技术的应用在铝活塞铸造生产中，为了防止夹渣进入型腔，减少铸造损失，人们一再选用优质原材料、提高熔炼质量，并在浇注系统的设计上下了极大功夫，虽然也收到了不小的效果，但却不能令人满意，且复杂的浇注系统，不但给生产制造带来不便，同时还增加了铝液消...  
          
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        发布时间：2023-12-18
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