最新刊期
卷 ， 期 5 ， 1999
- 摘要：Dimensional stability of the conventional piston Al alloy ZL109, reinforced with aluminosilicate short fiber, in thermal cycle was investigated.The results showed that thermal cycle caused residual dimensional changes of the specimens, and with the fiber contents increasing, the extents of dimensional changes decrease obviously. It is considered that inte rnal stresses due to the mismatch in the thermal expansion between fibers and matrix induce thermal strain delay so as to reduce the dimensional changes of the specimens关键词：Dimensional Stability;Thermal Cycle;Aluminosilicate Fibers;Aluminum Alloy
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发布时间：2024-04-01 - 摘要：With the self developed EPC coating for aluminum alloy,the relationship between rheological behavor and technical properties of EPC coatings have been investigated deeply.The rheological behaviors of attapulgite clay water suspension liquid and attapulgite containing coating are studied.The results show that the rheological property of EPC water\|based coating with attapulgete clay addition can be improved greatly.
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发布时间：2024-04-01 - 摘要：The characteristics and process of the coated sand mold （core）made by selective laser sintering rapid prototyping are introduced.The problem in technology design and three dimensional CAD model making and post treatment of the SLS coated sand mold （core）are analyzed and investigated combining with practical casting production,and some casting are made by the SLS mold （core）.关键词：Rapid Prototyping;Selective Laser Sintering（SLS）;The Coated Sand Mold（Core）;Quick Casting
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发布时间：2024-04-01 - 摘要：The TiB\-2/Al 7Si composite was fabricated by LSM method.The phase analysis of the composite was carried out by XRD. The effect of TiB\-2 particulate on heat treated properties and structures was examined. The results showed that TiB\-2 particulates distribute in the composite stably and homogeneously with nominal w （TiB\-2）=5% addition calculated by K\-2TiF\-6+2KBF4=TiB2+4KF+5F\-2.No phase as TiAl\-3 has been found. Young′s modulus increaes from 72.3 GPa to 96.8 GPa. TiB\-2 particulates have no obvious effects on the heat treated structure and properties.关键词：LSM Method;Aluminum Matrix Composite;TiB\-2
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发布时间：2024-04-01 - 摘要：Influence of distribution morphologies of TiB 2 particles on the refining characteristics of AlTi5B master alloys has been investigated.It has been found how to control the operating process for suitable distribution morphologies of TiB 2 particles so as to obtain optimum refining effect.The results showed that the refining effects were higher when small TiB 2 particles were uniformly distributed or loose\|gathered while the refining effects were lower when TiB 2 particles were densely distributed.In addition, the size of TiB 2 particles can influence their distribution.关键词：AlTi5BMaster Alloys;TiB 2 Particles;Grain Refinement
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发布时间：2024-04-01 - 摘要：The microstructure characterisic and distinctive defects of ZA27 alloy casting by centrifugal casting are expounded.The formation mechanism is analyzed in brief.关键词：ZA27 Alloy;Centrifugal Casting;Microstructure;Casting Defects
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发布时间：2024-04-01 - 摘要：Effects of titanium on mechanical properties of Cu\|Al\|Mn alloy were studied and the theoretical analysis was discussed.The results showed that proper titanium content affected tensile strength significantly while almost no effect appeared for elongation and hardness.关键词：Aluminum Alloy;Titanium;Mechanical Properties
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发布时间：2024-04-01 - 摘要：The castability of two kinds of titanium containing NCT1 and titanium free（NC1）nickle based ceramometal alloys without beryllium was investigated.The castability was tested through mesh monitor test method （MMTM）and lamellae casting（LC）.The castability of the two alloys was evaluated through counting the rim numbers of mesh and numbers of completely cast lamellae.The results showed that 100%castability of NCT1and NC1 was achieved using MMTM and that 97.5%castability of NC1 and 95%castability of NCT1 was gained without statistical difference in the castability of two alloys.The results suggested that there were no significantly negative effects on the castability of nickle based alloy with a little amount of titanium addition.关键词：Dental Alloys;Castability;Nickle;Titanium
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发布时间：2024-04-01 - 摘要：In this paper,the loose mixture with aluminum phosphate colloid as binder and metallurgical magnesia as hardening agent for shell mold was studied.3Cr2W8V steel hot forging die was fabricated in the shell mold with above mentioned mixture.The results indicated that the loose mixture has good properties,convenient control and low cost.It is suitable to produce shell mold for simple casting.关键词：Aluminum Phosphate Colloid;Shell Mold;Loose Mixture
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发布时间：2024-04-01 - 摘要：On die surface of soldering region,there are a lot of surface defects such as microholes,microcaves and cracks,so as to increase the actual contact area between die and casting.The cross section of soldering region can be divided into four parts as soldered aluminum alloy,transition layer,nitriding layer and steel substrate.The mode and mechanism of soldering have been studied and the soldering is classified as physicochemical soldering,mechanical soldering and mixed soldering.The origination and propagation processes of die soldering during die casting production have also been analyzed.关键词：Die Casting Die;Aluminum Alloy Casting;Soldering;Formation Mechanism
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发布时间：2024-04-01 - 摘要：The grain refinement test for A356 casting alloy has been carried out by addition of AlTiC master alloys. The result showed that both grain size and dendritic arm were refined obviously.This indicates that AlTiC master alloys would be a good additive for refining the crystal structure and overcoming the poisoning effect of Si in Al Si casting alloys.关键词：A356 Alloy;AlTiC Grain Refiners;Grain Refinement
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发布时间：2024-04-01 - 摘要：The extra\|large aluminum bus differs from the conventional ingot for rolling especially in casting tool design and installation of crystallizer,bell shaped bowl and ingot guide rod as well as in main technological paramaters control.Through the overcoming surface crack,knife-shaped deformation and corrugation one of the largest aluminum buses at home have been made.
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发布时间：2024-04-01 - 摘要：The effect of compound casting technology and compound modification on the properties of high Speed steel roll collar was studied.The results showed that compound high speed steel roll collar with high and even hardness and good bond between outer and inner layers could be gained when the modified colbalt free high speed steel in outer layer and nodular iron inner layer in connection with appropriate rotational speed of centrifugal machine,pertinent pouring interval between two kinds of the melt and moderate pouring temperature as well as surface induction heat treatment were chosen.It is indicated in industrial use that the service life of compound roll collar is higher by 5 times than that of high chromium cast iron collar.关键词：High Speed Steel;Roll Collar;Compound Centrifugal Casting;Induction Heat Treatment.
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发布时间：2024-04-01 - 摘要：Working state of shot sleeve is analyzed, further more according to my own experience some new design methods are proposed.
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发布时间：2024-04-01 - 摘要：With the enthalpy\|porosity method and single\|phase governed equations,considering the feature of melting and solidification processes,simulation on three-dimensional transient phase transformation processes under natural convection condition is completed.All that is based on the general code PHOENICS package.The typical gallium phase transformation problem has been used for benchmar king the numerical schemes. The caculated results have been found to be fair agreement with the experimental data, so that simulation for temperature, velocity fields and the location of solid liquid interface front during phase transformation process can be proved to be reliable.关键词：Phase Transformation;Natural Convection;Numerical Simulation
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发布时间：2024-04-01 - 摘要：The long effective modification and the persistent refinement for RE treated casting Al alloy was discussed,and modifying and refining technologies with rare\|earth alloy never pollute the environment,so it will be one of the best choices for the green and integral foundry关键词：Rare Earth;Modification;Refinement;Green and Integral Foundry
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发布时间：2024-04-01 - 摘要：This paper describes development of Cosworth Process used for the production of high strength and sound aluminum alloy castings with exceptional standards of accuracy and repeatability. A brief description of the parameters of Cosworth Process is made. In addition,in China the future application of Cosworth Process is forecasted.
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发布时间：2024-04-01 - 摘要：The overview and the new techaology and achievment in special casting including die casting, lost foam casting,investment casting,gravity die casting, low pressure casting, art\|craft casting, vapid prototyping casting are introduced.关键词：GIFA’99;Special Casting;New Technology
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发布时间：2024-04-01 - 摘要：Forty year′s activities of die casting trade on the basis of investigation and research of Jiangsu die casting production are introduced. The present situation and the development of die casting manufacture in Jiangsu Province are discussed.关键词：Die Casting industry in Jiangsu;Die Castings;Die Casting Machine;Die Casting Alloy
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发布时间：2024-04-01 -
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