最新刊期
卷 ， 期 S1 ， 1999
- 摘要：The mathematical model for simulating the magnetic field generated by rotating permanent magnets in the electromagnetic caster is built, and the distribution of magnetic field generated by straight induction stirrer（six poles three couples, eight poles two couples, eight poles four couples, twelve poles three couples, twelve poles six copules） is simulated and analyzed. Furthermore, the character of magnetic field generated by helical induction stirrer is discussed. Meanwhile, thoroughly taking advantage of the verge of powerful magnetic field beyond the critical pint generated by helical induction stirrer with more magnetic poles are put forward to reinforce the effect of stirring.关键词：Permanent Magnet;Rotating Magnetic Field;Arrangement Style of Magnetic Pole;Numerical Simulation
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发布时间：2023-12-18 - 摘要：The thermal expansion of zincaluminium alloysZA12, ZA27, ZA33 has been determined in this paper. Results show that with increasing of aluminium content the phase increases and coefficient of expansion decreases. The dramatic changes of expansion coefficient of the alloy with temperature dependence decrease with increasing of copper content which has highcr melting point, and the alloy can be used in a wider temperature range.关键词：ZincAluminium alloy Alloy;Microstructure;Coefficient of Expansion
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发布时间：2023-12-18 - 摘要：The qualities of aluminium castings and ingots are directly in fluenced by the hydrogen content in aluminium melt, therefore, the source of hydrogen in aluminium melt and its affecting factors have been discussed in this paper, also the kinetic behavior of hydrogen in Al melt and degassing process has been discussed. For instance, the hydrogen content of AlLi alloy could be decreased up to 0.110-6 by means of vacuum degassing process after the experimental investigation of vacuum degasing level and time.关键词：Aluminium Melt;Hydrogen;Refining
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发布时间：2023-12-18 - 摘要：Casting in site composites of Al20Si alloy the microstructures of accumulated coars primary Si in outer layer, fine primary Si in inner layer, and eutectic in middle layer, have been achived by centrifugal casting in preheated metallic mould. The structure morphology the hardness and wear resistance of composite have been investigated, and fracture model of the composites has been analyzed.关键词：Centrifugal Casting;Hypereutectic AlSi Alloy;Primary Crystal;In SiteComposites;Surface Composites
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发布时间：2023-12-18 - 摘要：The interface reactivity of some refractory oxides with Ti153 alloy has been studied experimently in this paper. The degreee of reactivity has been evaluated based on analysis of microstructure and microhardness of the surface hardened layer of Ti alloy. The results show that Ti153 alloy has been contaminated by the selected molding materials. But the degree of the alloy contaminations as serious as that of pure titanium because of to the lower chemical reactivity of Ti153 alloy.关键词：Titanium Alloy;Interface Reaction;Mold
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发布时间：2023-12-18 - 摘要：In this paper, main factors affecting mold filling capability of the alloy mixed with particles by stirringcast are analyzed on the basis of heat transfer and hydrodynamics; and experiments are carried out in order to investigate the influents of the particles fraction and the parameters of moldfilling on fluidity of the melt mixed with particles.关键词：Aluminium Alloy;MMCs;Casting;Fluidity
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发布时间：2023-12-18 - 摘要：The effect of titanium level on the microstructure and mechanical properties of AlSi7Mg0.3 alloy has been studied. As the titanium level is more than 0.12%, the elongation and impact toughness of the alloy drop rapidly, and the ultimate tensile strength rises slowly with no change in hardness and grain size. The change in mechanical properties are related to the appearance of titanium phase in needlelike form.The optimum level of titanium in AlSi7Mg0.3 alloy ranges over 0.08%￣0.10%, in which, as the iron level is up to 0.18%, the impact strenght and elongation are satisfactory.关键词：AlSi7Mg0.3 Alloy;Optimum Level of Titanium;Mechanical Property;Refining
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发布时间：2023-12-18 - 摘要：The effect of using different kind addition on the stability of the colloidal silica sol slurry was studied and the test results in this work show that the action of additive No.2 is more effective.关键词：Investment Casting;Colloidal Silica Sol Slurry Coatings;Stability of Suspenision
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发布时间：2023-12-18 - 摘要：The titanium and shell interface reaction of zircon ceramic sheel technological process is thoroughly studied by using SEM, EPMA and microhardness apparatus. The experimental results show that thermalmechanical and physiochemical actions, which interact with each other, coexist at titanium and shell interface. Thus thermal diffusion of Zr, O into titanium alloy matrix is considered as the dominant factor of titanium and shell interaction.关键词：Titanium Alloy;Investment Casting;Metal and Shell Interface;Interaction
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发布时间：2023-12-18 - 摘要：Alalloy particulates were prepared by vibration. The effect of different parameters on particulate size, shape and cooling rate is explored. The microstructure and solidification rate of the particulate are analyzed. The rod is made of the particulates by vacuum hot press and thermal extrusion. The mechanical properties of the rod are determined. The mechanical properties of the rod made of the particulate are as higher as that of conventional cast rod in 2￣3 times.
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发布时间：2023-12-18 - 摘要：In the paper, the hot deformation properties of sodium silicate shell in different temperature and different technology are studied. The results show that the material and roasting technology have an important effect.\=关键词：Sodium Silicate Shell;Hot Deformation;Investment Casting
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发布时间：2023-12-18 - 摘要：New cast aluminium alloys developed in recent years are introduced systematically in this paper. ZL115A alloy in Al\|Si\|Mg system with high strength and marine corrosion resistance has been successfully used in advanced weapon case. ZL305A alloy in Al\|Mg\|Zn system with high strength, good marine corrosion resistance and age stability has made success in side scuttle, underwater weapon case and other casting parts subjected to marine corrosion. ZAlZn4Mg4 alloy in Al\|Mg\|Zn system with high strength and good dimentional stability has also been successfully used in platform and support of inertial navigator.\=关键词：Cast Aluminium Alloy;Research;Ship
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发布时间：2023-12-18 - 摘要：In this paper, the morphology of iron and silicon of the principal impurities in commercial purity aluminium was analyzed, and the detrimental effects of iron and silicon on the properties of commerical purity aluminium were studied tentatively. At the same time, the essential methods weakening or eliminating the harmful effects of impurities were put forward to improve the metallurgical quality of commercial purity aluminium.\=关键词：Commerical Purity Aluminium;Impurity Elements;Morphology of Iron and Silicon in Aluminium;Metallurgical Quality;Modification of Impurity Phases
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发布时间：2023-12-18 - 摘要：The Induction Skull Melting （ISM） process of Ti\|48Al\|2Cr\|2Nb is introduced and the influence of charge condition on the melting process is studied. The experimental results show that the alloying element with high melting point and high density sholud be prepared as the master alloys to decrease the evaporation of alloy element during vaccuum melting.\=
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发布时间：2023-12-18 - 摘要：The effect of new compound refiner on microstructure and mechanical properties of ZL104 alloy was studied. It was found that the grain size was refined from 4 000￣5 000 m to 200￣300 m, the eutectic silicon was modified from lamellar shape of size 50 m2 m to spherical shape with 1 m diameter. The mechanical proerties of the alloy was improved significantly.\=关键词：New Compound Refiner;ZL104 Alloy;Microstructure;Mechanical Properties
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发布时间：2023-12-18 - 摘要：The columnar zone of HCrCI was found by unidirection solidification formed by chill. The ratio of the columnar zone width to the chill’s thickness is \{0.4.\} The service life of blast blade with columnar zone improved obviously in the first treatment line.\=
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发布时间：2023-12-18 - 摘要：The compound modification effect with RE\|Ba\|P has been investigated. The distribution of RE,Ba,P in Al\|alloy has been analysed. The results showed that the modifying effect with the compound RE,Ba,P is good for ZL108 alloy.\=关键词：Compound Effect RE\;Ba\;P Modifying
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发布时间：2023-12-18 - 摘要：Dry sand filling and compacting are the key to the molding for the EPC. The experiments on the dry sand compaction and the dispersion of compactness, the filling process and effect for the horizontal the tube were made by use of the self\|designed 3D vibration table and the characteristics of dry sand filling and compacting have been researched. The experimental results show that the primary affecting factors on the dry sand filling and compacting are thd vibration time, mode and acceleration.\=关键词：Expendable Pattern Casting;Three Dimensional Vibration Table;Acceleration;Dry Sand Filling and Compacting
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发布时间：2023-12-18 - 摘要：Four kinds of flake refractory are studied with multi\|property synthetic testing apparatus. The effect of their grain size and addition level on LFC coating propery is given for property selecting coating ingredient and controlling the coating property.\=关键词：LFC Coating;Flake Refractory;Coating Property
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发布时间：2023-12-18 -
Antifriction Property of Aluminosilicate Short Fiber Reinforced\= Aluminium\|Silicon Alloy Composite
摘要：The wear characteristcs of both ZL109 alloy/boron alloyed compacted graphite iron and composite/boron alloyed compacted graphite iron rubbing pairs were investigated under different environmental and heat\|treated conditions by using MLD\|10Wear testing machine. The results show that, under the condition of oil lubrication, the composite after T\-6 treatment exhibits excellent wear resistance compared with the ZL109 alloy. The composite fafter over\|aged treatment enjoys better wear resistance than the composite after T\-6 treatment. While the wear mass loss of boron compacted graphite iron in friction pair with the composite is much lower than that with ZL109 alloy, under dry condition, the same results were achieved.\=- 2
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发布时间：2023-12-18 - 摘要：As one of products from combining synthesis with traditional casting technology,SHS ceramic\|lined pipes have been brouhgt into industrial production at present. Based on the comparison of centrifugal SHS process with gravitational separation SHS process in technique characteristics, combustion synthesis, liquid phase separation and ceramic solidification three important processes involved in synthesizing ceramic\|lined pipes are expounded, several main problem for present research on the pipes have been discussed emphatically, effective ways for the quality improvement of SHS ceramic linedpipe have been given, and application prospect has also been further forecasted.\=
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发布时间：2023-12-18 - 摘要：On basis of damping theory it is considered that the optimum high damping composite with combined structural and funetional performance is composed of metallic materials and viscoelestic materials. High damping composite can be made of ZA25 foam metal matrix with viscoelestic materials penetration by centrifugal casting.\=关键词：Damping;Foam Metal;Viscoelastic Materials;Centrifugal Casting;Combined Structural and Functional Perfomance
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发布时间：2023-12-18 - 摘要：Based on gravitational separation SHS process to produce curved ceramic\|lined pipes, influences of synthesis techniques including mixture density and preheating temperature on thermit combustion process, and the structure and properties of the curved pipes have been investigated . It is found that mixture density has duplex effects on combustion process, and maximum combustion rate and minimum content of spinel phases in ceramic layers reach as mixture density up to \{1.5\} g/cm\+2; Preheating treatment will promote combustion process greatly, increase combustion rate and reduce spinel phase in ceramic layers with the increase of preheating temperature.\=
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发布时间：2023-12-18 - 摘要：Surface roughness of iron matrix composites castings reinforced by ferrochrome （Cr\|Fe） and tungsten carbide （WC） particulates with different grain size is tested in this paper. The influence of particulate type and grain sizes on surface roughness of iron matrix composites castings analyzed. The results show that: surface roughness of iron matrix composite castings reinforced by particulates is in the range of \%Ra\%\{6.3\}￣50 m; the surface roughness of composite castings increases with the increase of particulate sizes; the surface roughness of WC composites is larger than the of Cr\|Fe composites with the same particulate sizes.\=关键词：Iron Matrix Particulates Reinforced Composites;Particulates Sizes;Surface Roughness
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发布时间：2023-12-18 - 摘要：The squeeze casting process of SiC particulate reinforced Al\|alloy composite was studied. The processing parameters such as squeezing specific pressure, holding time, pouring temperature of the melt, and pre\|heating temperature of the mold was optimized. It is believed that squeeze casting is a good solidification route of particulate reinforced aluminium matrix composite. It can overcome the shortcoming of high gas content in composite slurry prepared by melt\|stirring.\=关键词：Aluminium Matrix Composite;Squeeze Casting;SiCp Reinforcement
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发布时间：2023-12-18 - 摘要：The wear\|resistance of the new high Aluminium Zcin Based Alloy for gear transmission has been studied. The results show that the worn volume of the gear pairs with better running in is small and conform with the test standard. It is proved that the ZA27 alloy is fit for the gear’s work in the heavy load and low speed conditions.\=
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发布时间：2023-12-18 - 摘要：A new kind of ZAS35 wear resistant zinc based alloy has been developed by Sb element alloying, alloy composion design, as well as the applications of a new kind of melting technique called melt heat treatment and s synthetic treating agent. The test results showed that the new alloy is excelent in mechanical properties, wear resistance and anti\|wear properties. Moreover, the casting defect of the bottom shrinkage is reduced.\=
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发布时间：2023-12-18 - 摘要：In accordance with the principles of summerizing parameters and non\|dimensional analysis, a general model is constructed to determine the surface temperature of work pieces in squeeze casting process. It will be of benefit the to process design and control.\=关键词：Squeeze Casting;Outer Surface Temperature;General Model
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发布时间：2023-12-18 - 摘要：By comparing normal pressure tracing curve with abnormal tracing curve the corresponding relations between abnormal tracing curve and casting troubles. They provide reliable basis to understand and overcome the troubles timely.\=关键词：Counter Pressure Die Casting;Pressure Tracing Curve;Casting Troubles
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发布时间：2023-12-18 - 摘要：This paper study on process and technology characteristic of indirect positive squeeze casting for 140 piston, makes a systematic analysis on its microstructure and fractograph, gives expression to the relationship between its microstructure and property.\=关键词：Automobile;Piston;Squeeze Casting
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发布时间：2023-12-18 - 摘要：This paper mainly decribes the technological application research of aluminium alloy as cast, used in automobile engine cylinder head and its effect.\=关键词：Aluminium Alloy;Casting;Technological Application;Automotive Component
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发布时间：2023-12-18 - 摘要：Based on manufacturing technology analysis of the aluminium double\|cross axle, a method to make this component by conventional sand mold is put forward. In this paper the casting technology and properties of the component are described in details. The mechanism of satisfactory electrical performance is also analyzed. It is pointed out that it is possible to manufacture this aluminium alloy waveguide component by this method in strictly controlled casting technological condition, expecially in dimensional accuracy and surface roughness of the core.\=
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发布时间：2023-12-18 - 摘要：This paper emphasizes thermal conductivity and the effect of chill sand on the microstrecture and property of aluminium alloy casting. It is proved that chill sand is one of the best molding materials for of aluminium alloy casting with the advantages of both ordinary sand and permament mold.\=关键词：Chill Sand;Aluminium Alloy Casting;Cooling Curve
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发布时间：2023-12-18 - 摘要：Take TS\|14 speed governor as a example, the technical prosess of aluminium alloy casting withfine holes and it’s quality control are reviewed. Furthe improvement of the governor case design has been proposed also.\=
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发布时间：2023-12-18 - 摘要：The study on microstrucuture, resistivity and mechanical property of Al\|Si\|Mn\|Fe alloys is carried out. A new kind of aluminium alloy with satisfactory resistivity and good casting properties and good mechanical properties for motor rotors with high torque and high slip is found. The new materials of aluminium alloy has been tested and applied to production of electric machnies with high torque and high slip.\=关键词：Rotor of Electric Machine;Aluminium Alloy;High Resistivity;Mechanical Property;Micrastructure
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发布时间：2023-12-18 - 摘要：The \{0.5%\}￣1%Cr containing chromium\|broze is an ideal material of casting the electrode copper bush of various arc furances. P\|Cu alloy is forbidden to serve as the deoxidizer for the casting of chromium\|bronze. Instead, the combined deoxidation of Al\|Cu and Mg\|Cu is better. The refining agent for the chromium\|bronze can obviously refine the alloy grain and improve the alloy properties at room and hig temperatures.\=
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发布时间：2023-12-18 - 摘要：Aimed at some troubles in casting process of vacuum pump body. The technolgeical difficulties were analyzed and the related technique counter\|measures were proposed for the casting quality improvment.\=关键词：Compound Die;Casting Process;Vacuum Pump
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发布时间：2023-12-18 - 摘要：The study of technology and achievements of continuous up\|casting of aluminium\|pole in recent years was described. Several key factors that affect aluminium\|pole up\|continuous casting were analyzed, and the mechanism of aluminium\|pole breaking was discussed. The results showed that the diffuse reaction between aluminium and graphite was the internal cause leading to break\|off, eliminate rdsidual aluminium\|ring on the crystallizer was the approach of sovling the problem.\=
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发布时间：2023-12-18 - 摘要：The die\|casting of cylinder block 7H15 with hyper\|eutectic Al\|Si alloy R14, is a key part of the SE type contractor. In its trial\|manufacture there is a quality problem of gas hole and hardness, which has been discussed and analyzed in the papar. A solution to the defect problem is put forward.\=
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发布时间：2023-12-18 - 摘要：Base on product practice, the thesis is introduced use suitable crucible material, lining materials, paint and operating method, consecutive working life\|span of iron crucible will be up a half of year.\=关键词：Aluminium Melting;Main Frequency Induction Furnace;Crucible;Service Life
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发布时间：2023-12-18 - 摘要：A kind of compound coating used in melting process of aluminium and zinc alloys is developed through optimizing design. The property and the actual protective effectiveness are also tested. The result shows that the coating is effective and durable as well as convenient for use.\=关键词：Crucible;Coating;Compound Coating
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发布时间：2023-12-18 - 摘要：This paper expounds the important role of liquid surface pressuring control system in low pressure csating and counter pressure casting in order to improve the casting quality. In the meantime, this paper indicates the reasons why the liquid surface pressure control system is adopted, the difficulites faces in engineering, and the solutions.\=关键词：Low Pressure Casting;Counter Pressure Casting;Liquid Surface Pressuring;Control System
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发布时间：2023-12-18 - 摘要：This paper maily described the technological characters and the mechanical properties of the golf head made of super strength maraging steel by the way of investment casting.\=关键词：Maraging Steel;Golf Head;Investment Casting
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发布时间：2023-12-18 - 摘要：The core technology was used to eliminate hot spot areas of the wax pattern for shovel casting. The effect of technological parameters such as wax\|injecting temperature, pressure, velocity and pressure\|holding time on the surface roughness and shrinkage rate of wax pattern was studied systematically. Finally, the optimum making technology of the wax pattern for shovel casting was given.\=关键词：Wax Pattern;Surface Roughness;Shrinkage Rate
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发布时间：2023-12-18 - 摘要：The technological design and the characteristic during trialmanufacture for a stopping device of firearms in lost wax casting as well as some measures for enhancing product quality are introduced. A concept so called \!feeding by over flowing metal melt\" is put forward. Csating with simultaneous solidification trend is improved effectively by metal melt inlet from place of heavy section.\=
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发布时间：2023-12-18 - 摘要：To counter this situation that hard alloy has severe brittleness and high production cost, the hard alloy\|cast steel composite casting technology has been developed. The hard alloy workpiece manufactured with this technology has high toughness, low production cost and good performance. This technology is well worth a widespread application.\=关键词：Hard Alloy;Composite Casting;Toughness;Wear Resistance
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发布时间：2023-12-18 - 摘要：The paper show that the method of H removal of aluminium melt by bubbles floatation shall be use yet in a wide range facing 21st century, but gaseous deyassing agent shall be developed to gradually replace solid degassing agent. The paper yet show the main trend of improvement and development of this purification technology.\=关键词：Purifying of Melten Al;Refining;Degassing;Develpment
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发布时间：2023-12-18 - 摘要：A research situation of the lost foam casting process with dry sand for aluminium alloy is reviewed. A detail review is given for research achievements on the mold filling behavior of aluminium alloy, the thermal degradation properties of pattern for EPC, heat and mass transfer properties, pattern meterial and coating. The weakness on the former research and the future research orientation are expounded.\=关键词：Aluminium Alloy;Lost foam process;Coating
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发布时间：2023-12-18 - 摘要：The status of the current theoretical and experimental studies in domestic and foreign lands on soldering phenomenon bewteen die casting die and aluminium alloy casting are reviewed in the paper. The problem in research is discussed, and the assumption and suggestion are put forward for further study.\=关键词：Die Casting Die;Aluminium Alloy Casting;Soldering
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发布时间：2023-12-18 - 摘要：This paper mainly reviews on the intermetallic compounds of the die casting aluminium. Including the effect of intermetallic compounds on die casting aluminium alloy materail.\=关键词：Die Casting Aluninium;Crystallization;Intermetallic Compounds
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发布时间：2023-12-18 - 摘要：The applications of magnesium die castings in global automotive industry and the development of magnesium alloys were reviewed. The major properties of magnesium alloy compenents, magnesium die casting processes and surface treatment for corrosion resistance were discussed. At the same time, the utlization of magnesium die castings for automovtive industry in the future was forecast.\=关键词：Magnesium Alloys;Die Castings;Automobile;Die Casting Process;Surface Finishing
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发布时间：2023-12-18 - 摘要：The advantages and casting forming methods of cast die are described. Then the research and application of cast die and its materials for cast die development are summarized. Finally, some suggestions are presented.\=关键词：Cast Dies;Cast Methods;Cast Die Steel
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发布时间：2023-12-18 - 摘要：In this paper, permanent mold forming methods used for titanium alloys have been introduced briefly. The present research and development status of titanium alloys in permanent mold casting have been reviewed emphatically.\=关键词：Titanium Alloys;Forming Methods;Permanent Mold Casting
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发布时间：2023-12-18 - 摘要：The electrogmagnetic casting （EMC） of aluminium and other alloys ingots is now well developed because of its excellent advantages. This paper introduces the EMC technology and its development and remarked on the domestic and overseas research work of EMC numerical simulation. It is considered that the key is three\|dimensional unsteady solidification numerical clalculations in the EMC process for the purpose of simulating the dynamic thermal behaviors during transition period.\=关键词：Electromagnetic Casting;Mathematical Model;Numerical Simulation
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发布时间：2023-12-18 - 摘要：The obvious chearcteristics of casting technological innovation in the 21\+\{st\} century are as follows: New materials are perfectly combined with advanced molding and pouring technologies, and casting product structure tends to be near net shape, multifunctional and integrative. In addition, minimum energy consumption and environment load and maximum utilization ratio of circulation are demanded.\=
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发布时间：2023-12-18 - 摘要：The flowing of ZA alloy liquid in the model cavity is enforced under the punch squeeze casting favorable for pressure transmission. The porosity defect is remarkably reduced, the soundness increased, the structure is improved, thus the ductility increased obviously. Results show that and phase have been decomposed under the technology of punch squeeze casting. The and phase decomposition influences the strength and the ductility of ZA alloy. The lamellar spacing decreasing of \|phase decomposition product is the main reason for the strength improved. The decomposition of and \|phase also improves the ductility and toughness of the alloy. The increase of aluminium content has little effect on the improvement of mechanical properties at room temperature, but enhances the working temperature of the ZA alloy. With the increase of Cu content the tensile strength is improved, but the elongation is reduced because of \|phase increase.\=
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发布时间：2023-12-18 - 摘要：In this paper, the development and process of application of Magnetohydrodynamics（MHD） were introduced, and the principle and characteristic of the MHD\|Castings were revealed through the interaction of the travelling electromagnetic field with molten metal. On the basis of the comparison of the MHD\|Casting with die\|casting, in combination with the present research and application of the MHD\|Casting in domestic and foreign countries, especially with the experimental results obtained by HIT, the principle advantages and fields of application and the prospect of the MHD\|Casting were briefly discussed.\=
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发布时间：2023-12-18 - 摘要：Dry sand molding without binder is one of the main characteristics of the expendable pattern casting, and the casting quality is directly connected with the filling and compacting quality. Therefore, the vibration table with excellent filling and compacting properties is the dey equipment for EPC. This paper introduces the structure and characteristics of the self\|designed microcomputer controlling 3D vibration compacting table and the characterisics of MC\|51 microcomputer hardware and controlling software. Through practical use, it is shown that the machine can carry out different filling and compacting processes according to the shapes and structures of different catings and guarantee efficient filling and enough compactibitlity at individual position, with good castings quaiity.\=关键词：Expendable Pattern Casting;3D Vibration Compacting Table;Microcomputer Controlling
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发布时间：2023-12-18 - 摘要：The solidification mechanism of horizontal continuous casting of steel round rod has been discussed in this paper. A twodimensional axissymetrical heat transfer model has been adopted for the calculation and analysis of the growth of primary shell. And the experimental results show that the model is satisfactory.关键词：Horizontal Continuous Casting;Solidification;Heta Transfer;Numerical Simulation
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发布时间：2023-12-18 - 摘要：In this paper, the format of STL is presented. Methods of mesh division and faulttolerance are studied in detail. Based on STL format file, a practical software of mesh division is developed, which can divide complicate geometrical solids into FDM meshes. In addition, the software can import any geometrical models from both workstation and microcomputer. Applications prove the software can be used to generate FDM meshes accurately and rapidly.关键词：STL;Mesh Division;Numerical Simulation;FaultTolerance
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发布时间：2023-12-18 - 摘要：Considering the gearbox casting for the minicar as an example, this article clarifies that it is very nesessary and effective to apply the computer technology to improve quility of the casting. At the same time the article also notices that personnel new function for the quality improvement of die casting not be replaced by computer in automotive producing conditions.关键词：Computer Technology;Quality of Die Castings;Die Temperature
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发布时间：2023-12-18 - 摘要：Intelligent control will inevitably be adopted in the control system of low pressure die casting. This paper proposes a new thermal analysis methodWavelet thermal analysis. Based on and multisensor data fusion structure, a hierarchinal intelligent control for low pressure die casting is established, which integrates intelligent techniques and manstruture machine cooperation into one system.关键词：Low Pressure Die Casting;Intelligent Control;Wavalet Thermal Analysis;Multisensor Data Fusion
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发布时间：2023-12-18 - 摘要：Component cost accounting of investment castings is described and the computer aided quotation system is shown.关键词：Investment Casting;Cost Accounting;Computer Aided Quotation
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发布时间：2023-12-18 - 摘要：澳大利亚压铸工业起点高，技术工艺装备先进，而且拥有世界一流水平的专门从事轻金属铸造的研究开发组织——铸造合金与凝固工艺合作研究中心（ＣＲＣ－ＣＡＳＴ）和全国性行业组织——澳大利亚压铸工业协会（ＡＤＣＡ）。现在，澳大利亚已是世界上铝、锌压铸件的生产大国...
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发布时间：2023-12-18 - 摘要：The type of wax, shape of wax pattern and its manufacturing process including injecting time and pressure, wax temperature and wax flow etc. have effects on accuracy of wax pattern. All factors effect the contraction of wax pattern simultaneously.关键词：Investment Casting;Wax;Accuracy
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发布时间：2023-12-18 - 摘要：我厂生产的高速齿轮泵，其壳体材料成分与ＺＬ１１１相近，经淬火时效后，要求σｂ≥３００ＭＰａ，δ≥３％，性能要求甚高。因此要求淬火加热温度均匀度、稳定度高，入水速度快。原先我厂用普通井式空气炉加热，工件自顶端吊出入水，工人操作稍有不慎，就难以保证质量。...
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发布时间：2023-12-18 - 摘要：铝熔体精炼处理时，用旋转喷头、多孔吹头或单管吹入纯惰性气体去氢，是既简便安全又无毒无味不污染环境的有效方法。在铝及铝合金熔炼生产上已得到越来越广泛的应用。在这种精炼处理方法的诸多工艺因素中，惰性气体的纯度对铝熔体的实际去氢效果影响很大。有关的科研报告...
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发布时间：2023-12-18 - 摘要：高效连铸由于实现了连铸－连浇。异钢种连浇及其他新技术，尤其是拉速的提高，对结晶器要求更高。本文研究了具有满足对结晶器材料性能要求的Ｃｕ－Ｃｒ－Ｚｒ材料成分与制作工艺，提供了适用于高效连铸的一种结晶材料。１材料选择与工艺确定１．１材料选择结晶器是钢水凝...
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发布时间：2023-12-18 - 摘要：为了充分发挥下抽芯活塞铸造工艺的优势，采用了保温冒口新技术，消除了活塞缩孔（松）缺陷，宏观等级稳定在１～２级，冒口质量减小到仅占铸件质量的２５％，铸造废品减少到５％。冒口套使用寿命可达２０００次以上，完全可作为进口替代产品，而且价格低廉，具有明显的技...
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发布时间：2023-12-18 - 摘要：我厂的有色车间以砂型铸造为主，生产柴油机的排气管、出水管、冷却器盖板、油底壳、节温器盖等铝合金铸件。长期以来使用的外购涂料，存在着发气量波动大、涂层表面强度低、易分层、结块等质量问题，由此造成了气孔、粘砂等铸造缺陷，特别是涂料结块难以搅动，造成涂料的...
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发布时间：2023-12-18 - 摘要：球形喷灌头、高压均压环以及尺寸较大的金属装饰球等等，这些零部件的共同特点是：①材质为有色金属，对铸件的质量要求很高，经过机加工甚至抛光后，外表面上不允许残存气孔，疏松和夹杂等铸造缺陷；②均为单件小批量生产。该类铸件如果采用特种铸造方法生产则成本太高，...
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发布时间：2023-12-18 - 摘要：在模具的设计与制造中，导向部件－导板导套的材质，多采用以铸铁，高碳钢为金属基体，导向部件间的润滑方式是往摩擦间隙中加注润滑油。这种以黑色金属为基体材质和外加润滑油的传统润滑方式，由于存在加工精度低，油污污染环境等一系列问题，在国内外制造业中已逐渐被淘...
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发布时间：2023-12-18 - 摘要：铝及铝合金在熔炼过程中，铝液易和水汽反应，且随着温度的升高，气体在铝液中的溶解度逐步增加，同时铝及铝合金中的一些合金元素容易氧化，产生夹渣物。实践证明，铝液中氧化物（Ａｌ２Ｏ３）与氢之间存在着相互作用的关系，Ａｌ２Ｏ３含量增加时，含气量也随之增加，氧...
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发布时间：2023-12-18 - 摘要：随着人民群众生活水平的逐步提高，愈来愈多的高、中档水暖器材进入普通百姓的家庭。带来的是水暖器材市场的竞争日益激烈，对此，不少水暖器材的生产厂家在提高其产品质量的同时，采取不同的措施来降低生产成本，其目的在于确保和扩大其产品的市场占有率。近些年来，我厂...
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发布时间：2023-12-18 - 摘要：ＺＱＳｎ１０－１是凝固范围较宽的合金，合金中含磷，较之一般青铜更易造成偏析，它的凝固特点是糊状凝固，合金液流动性较差，补缩困难，容易产生枝晶偏析和分散性微观缩孔，不易得到组织致密的合金。跟其他铜合金一样，熔化过程中，容易吸气和形成氧化夹杂，故获得高气...
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发布时间：2023-12-18 - 摘要：６１１０柴油机齿轮室罩盖——飞轮壳是６１１０柴油机的重要零件之一。采用低压铸造工艺生产。其材质为ＺＬ１０４，结构特点是壁厚不均匀，一般壁厚为６ｍｍ，最大壁厚４０ｍｍ。外形大，最大直径为４５０ｍｍ，高近１８０ｍｍ，整个铸件质量达１６ｋｇ。刚度要求高且要...
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发布时间：2023-12-18 - 摘要：１新型弹丸（磨料）的特性新型弹丸是不锈钢切丝丸，采用ＧＢ４２４０－８４冷拔丝经专门设备高速切断而成，无氧化、缩松、气孔、微观裂纹，表面光亮，切丸断面收缩率大于３０％，在使用过程中不会像铸钢丸出现碎裂现象，具有粒度均匀、硬度稳定，强度高、韧性好等特点，...
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发布时间：2023-12-18 - 摘要：压铸模具发生局部崩裂和开裂、断裂等情况，或者模具被压蹋、压凹，或者分型面严重喷溅时，可以采取焊接或者线切割重新镶拼修复模具。这样可以以较小的代价实现模具修复。１焊接１．１焊接在压铸模维修中的应用焊接在压铸模维修中应用十分广泛。在模具制作过程中局部出现...
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发布时间：2023-12-18 - 摘要：五羊－本田ＷＨ１２５的前后整体式铝合金轮毂类产品的特点是：设备投资大，装备水平高；采用真空高压铸造，生产工艺先进，加工余量小；质轻耐蚀，经久耐用，维修方便；强度较高，平衡稳定性好；抗冲击、抗疲劳性好。由于上述特点，虽然价格比幅条式轮毂高１倍左右，仍深...
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发布时间：2023-12-18 - 摘要：液态金属在浇注及加压凝固过程中，铝液本身含有一定的气体需析出；脱模剂中某些成分挥发、分解或燃烧也会形成气体。而这两部分所产生的气体，在模具合模后加压成形开始阶段，应从适当的位置排出去。否则在铸件表面就会产生欠铸、麻点、起皮；在铸件内部产生气孔、针孔、...
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发布时间：2023-12-18 - 摘要：“１１５１”壳体铸件结构如图１所示。其外表面粗糙度要求为Ｒａ６．３～３．２μｍ，尺寸公差最大不超过±０．３ｍｍ。材质为０Ｃｒ１７Ｎｉ４Ｃｕ４Ｎｂ。图１壳体铸件１模具设计设计制造模具时，铸件的综合收缩率主要考虑三个方面：合金收缩率、模料收缩率和型壳膨胀...
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发布时间：2023-12-18 - 摘要：ＣＰ抛丸机是武钢从国外引进的用于进行硅钢板表面强化处理的重要设备，其分配器为抛头中的关键零件。型腔比较复杂，属薄壁空腹回转体结构，筒体上有８处长方形窗口，端部置有联接法兰盘，所以铸造难度较大，产品结构见图１。图１产品简图由于分配器工作时在定向套内高速...
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发布时间：2023-12-18
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