最新刊期
卷 ， 期 3 ， 2000
- 摘要：Bi-lined ceramic composite pipes are fabricated by gravitational separation SHS technology. Occurrence of remelted area of Al\-2O\-3 matrix and （Al\-2O\-3 + FeO·Al\-2O\-3） eutectic between bi-lined ceramics make them bond with partial metallurgical pattern, resulting in crack density reduction of each lined ceramics. Relative density and hardness of second lined ceramics layer increased more than those of the first lined ceramics layer, but compressive shear strength between bi-lined ceramics layer as well as compressive strength of bi-lined ceramic pipes are decreased more than those between ceramics and steel pipe as well as of single lined ceramic pipes.关键词：Combustion Synthesis;Gravitational Separation;SHS Composite Pipes
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发布时间：2023-12-18 - 摘要：Influence of core box structure on shooting process isanalyzed using conventional core-shooter. Moreover, influence of numbers of vents on shooting process is analyzed. Theresults indicated that the maximum pressure reached in corebox increased with increasing properly numbers of shootingholes during shooting and the core compaction is enhanced; themaximum pressure in core box decreased with increasing numbers of vents关键词：Shooting Process;shooting Holes;Vents
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发布时间：2023-12-18 - 摘要：Pressure distribution in pouring basin for Ti 3Al - Nb alloy during the centrifugal casting process in permanent mould is analyzed. The expression of extra pressure item ΔP during the centrifugal casting process as well as relationship between the maximum angular velocity and melt height, pouring basin diameter is concluded. The results showed that pressure acting on melt consists of static pressure and extra pressure during the centrifugal casting process. Static pressure is determined by melt height while extra pressure is determined substantially by density of molten metal and rotating angular velocity. Pouring basin height and diameter should follow a certain functional relation. It is the better choice that height of liquid metal is a half of pouring basin height. The value of allouable maximum angular velocity increased with an increase of melt height and pouring basin diameter.关键词：Metal Mould;TiAlNb Alloy;Pressure Distribution;Centrifugal Casting
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发布时间：2023-12-18 - 摘要：Variation law of microstructure and mechanical properties of Be added cast Mg alloy is studied. Be addition has some effect on γ phase modification. Form and distribution of γ phase varied with Be content variation. Ambient tensile strength and elongation of alloy decreased with low Be addition while Be addition reached some degree, these properties index will increase. But it decreased with continuously adding Be. Variation law of the tensile strength and elongation at high temperature is as same as that of those properties at room temperature. Be addition has slight effect on the micro-hardness of α -Mg matrix.关键词：Be;Mg Alloy;Mechanical Properties
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发布时间：2023-12-18 - 摘要：Influence of different processes and micro-alloying elements addition on structure and properties of Cu-Cu\-3P alloy is investigated. The results show that not only both Ag increases strength and decreases brittleness and Sb nodularizes Cu\-3P with strength increase, but also refinement process significantly nodularizes Cu 3P with strength increase and brittleness decrease. Ultrasonic oscillation can nodularize Cu 3P with little effects on microstructure refinement.关键词：Brazing Material;Refinement Technology;Cu-Cu\-3P Alloy
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发布时间：2023-12-18 -
- 摘要：Influence of several parameters, including pattern material, sample size, pouring temperature, coating thickness, sprue height and vacuum rate, on the fluidity of AZ91 Mg alloy by EPC-V is studied. The results show that the fluidity of AZ91Mg alloy increase with increasing pattern thickness and pouring temperature, vacuum applied while the fluidity decrease as increasing coating thickness and pattern material density. The influence of sprue height on the fluidity appears insignificantly.关键词：EPCV;AZ91 Mg Alloy;Fluidity
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发布时间：2023-12-18 - 摘要：Hydrogen content in molten Al-Cu alloy keeps constant below 780℃, but it increase dramatically above this temperature. It is indicated that the alloying element Cu plays critical role for the hydrogen content in superheated Al-Cu melt below 780℃, namely below 780℃, the degree of hydrogen pick up for liquid Al is determined by the feature of oxide film on Al melt surface. The results showed that hydrogen content in molten Al decrease with alloying element Cu addition increasing at the same superheated rate.关键词：Alloying Element Cu;Superheated;Hydrogen Content;Oxide Film
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发布时间：2023-12-18 - 摘要：Relationship between inclusion content and hydrogen content in the molten aluminum by hydrogen tester HYSCANⅡ is studied. The results show that hydrogen content in melt can increase by more than 3 times as inclusion content excesses 2.5%. The influence of melting temperature and inclusion on hydrogen content is made.关键词：Aluminum Alloy;Hydrogen Content;Inclusion Content
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发布时间：2023-12-18 - 摘要：A series of cast Al-Pb alloy with lead content from 0 to 25% has been produced using a new stirring foundry technology. The microstructure and mechanical properties of cast Al-Pb alloy has been studied. The results showed that the hardness, tensile strength and elongation of as-cast alloy decrease with lead content increasing in the given lead content range. Analysis for fracture indicated that fracture feature varies from ductile to brittle gradually with an increase of lead content. Friction and wear performance are minimized for an optimum lead content 15% - 20%, namely wear and friction coefficients are minimum.关键词：Cast Al-Pb Alloy;Lead Content;Microstructure;Mechanical Properties
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发布时间：2023-12-18 - 摘要：The advantages principle technique parameter and equipment of hydraulic cleaning sand are introduced by comparing the characteristic of the hydraulic cleaning with mechanical cleaning and chemical cleaning. The poured cast can keep initially conditions to the maximum degree and insure the casting quality as well as improving cast product circumstance using hydraulic cleaning关键词：Investment Casting;Mold Shell;Hydraulic
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发布时间：2023-12-18 - 摘要：The die construction , running principle and features,technological process flow, technique parameters and product performance of aluminum alloy integral naves by gravity die casting are described关键词：Motobike;Aluminum Alloy;Gravity Die Casting
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发布时间：2023-12-18 - 摘要：The sand-lined metal mold casting technique for bimetallic squeezing axle was investigated. The suitable chemical composition in the white cast iron was to be adjusted. Properties of manufactured bi-metallic squeezing axle had achieved or surpassed the fixed requirements.关键词：Metal Mold;Lined Sand;Composite;Squeezing Axle
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发布时间：2023-12-18 - 摘要：Study on flow field during molding filling process of liquid metal with self-developed 32-channel rapid data acquisition system was carried out. The data acquisition system has the merit of high acquisition speed, high data accuracy, more test channel, easy data processing. It can scan all channels in 4. 8 ms and total numbers of sample data per channel reach 4500 points. System software was developed with C++language and object-oriented programming method, in which memory insufficient problem was solved with integer data storing, dynamic memory allocation and extent memory use. Mold filling process in sand casting and lost foam casting for aluminum alloy and spheroidal graphite cast iron is measured by using this system. Rapid Variation of temperature field during mold filling process is recorded successfully. Based on the recorded temperature-time variation rule in the measured points, the filling Sequence of molten metal in the mold could be derived.关键词：Data Acquisition System;Aluminum Alloy;Spheroidal Graphite Cast Iron;Mold Filling Process of Casting;Temperature Field
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发布时间：2023-12-18 - 摘要：Integration of a CAD/CAE system for foun-dry technology under concurrent engineering environ-ment can realize efficiently technical route of design-evaluation-redesign -optimization, consequently implement concurrent design of the product. Based on the general commercial CAD model system-Solid Edge, an integrated CAD/CAE system for foundry technology was connected with the product design system within the concurrent engineering environment. The integrated CAD/CAE system based on input of product model realize design for casting processing parameters and gating system, product 3D solid model of castings containing casting processing information, adjust and optimize processing design through numerical simulation of solidification关键词：Concurrent Engineering;Foundry Technology;CAD/CAN
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发布时间：2023-12-18 - 摘要：Surface of the thousandth auspicious bell with 21t weight in Wuhan has complicated fine veins and thousandword inscription, so requirement for surface quality is high. Taking the new craft of coating and laying Ceramic pulp ceramic mold to make the 21 t bell, the surface veins is clear and picture is vivid. The feature and technique process of coating and laving sand pulp ceramic mold are introduced关键词：Bronze Bell;Ceramic Mold;Casting
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发布时间：2023-12-18 - 摘要：The development status of dental cast titanium system and investment mold materials is introduced. The cast structure of surface reacted layer and some casting technological problems including mold temperature, cast pressure are also discussed.关键词：Titanium;Dental Casting;Molding Material
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发布时间：2023-12-18 - 摘要：Semisolid casting for aluminum alloy including industrial productive process, the main method, some supply companies of the special raw material ingot are described. The developing prospective of casting technology is forecast关键词：Semisolid Casting;Aluminum Alloy Ingot;Manufacturing Method
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发布时间：2023-12-18 - 摘要：The melt spinning techniques in rapid solidification process, including free jet melt spinning, chill block meltspinning, planar flow casting, melt extraction, melt drag process and twin roller technique, were overviewed and compared on the basis of technique principles, technique features and other aspects.关键词：Rapid Solidification Process;Single roller;Twin Melt Spinning Technology
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发布时间：2023-12-18 -
- 摘要：The advantages of electro-slag technology and application of this technology in Chinese foundry trade are surveyed.Suggestion on some problem is given关键词：Special Casting;Electro-slag Technology;Electro-slag Remelting Casting
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发布时间：2023-12-18 -
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