最新刊期
      卷 0 ， 期 4 ， 2000
      • Wang Feng
        Issue 4, Pages: 1-3(2000) DOI: 10.15980/j.tzzz.2000.04.001
        摘要：Al Si Ni Cu Mg alloy was fabricated by spray deposition technique. The microstructure of alloy in deposited, extruded and T6 heat treated states has been analyzed. The results showed that the existence of three nickel containing intermetallic compound in the microstructure can prevent effectively the diffusion of silicon atoms and restrain the growth of primary silicon particles under extruded and T6 heat treated conditions. Furthermore, the precipitation strengthening effect of Cu with T6 heat treatment was influenced by the formation of Cu containing Al Si intermetallic compound.  
        关键词：Spray Deposition;Microstructure;Hot Extrusion;Intermetallics   
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        发布时间：2023-12-18
      • Vol. 0, Issue 4, Pages: 3(2000)
          
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        发布时间：2023-12-18
      • Zi Bingtao
        Issue 4, Pages: 4-6(2000) DOI: 10.15980/j.tzzz.2000.04.002
        摘要：Solidification structure of LY12 aluminum alloy under pulse electric current with high density was studied. The results showed that the pulse electric current with high density obviously improved the solidification structure. The microstructure is obviously to be refined and equiaxed as compared with specimen untreated with electric current. In addition, the stronger the density of pulse electric current was, the better the refining effect was.  
        关键词：Pulse Electric Current;Solidification Structure;Aluminum Alloy;Grain Refinement   
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        发布时间：2023-12-18
      • Vol. 0, Issue 4, Pages: 6(2000)
          
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        发布时间：2023-12-18
      • Guo Feng
        Issue 4, Pages: 7-9(2000) DOI: 10.15980/j.tzzz.2000.04.003
        摘要：The morphology and relative quantity of α,β′ phases in microstructure are altered and constituent and distribution of inclusion are improved through adding RE element Ce to H62 brass and using recrystallization annealing. The quantitative relationship between microstructure characteristics and mechanical properties is obtained by measuring relevant mechanical property parameters. The results showed that there is a obviously corresponding relation between relative quantity of α,β′phases, distribution of β′ phase and mechanical properties in H62 brass. The inclusion improvement is also favorable to property improvement.  
        关键词：H62 Brass;Mechanical Properties;Microstructure Characteristics   
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        发布时间：2023-12-18
      • Vol. 0, Issue 4, Pages: 9(2000)
          
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        发布时间：2023-12-18
      • Lu Shusun
        Issue 4, Pages: 10-12(2000) DOI: 10.15980/j.tzzz.2000.04.004
        摘要：The morphology and nature of several kinds of hard metallic inclusion（such as AlSiMnFe etc.） in both hard spots and the harder matrix zone of aluminum die casting are investigated. The cause for formation of these inclusion is discussed and approachs to prevention are proposed.  
        关键词：Hard Spots;Metallic Inclusion;Aluminum Die Casting   
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        发布时间：2023-12-18
      • Vol. 0, Issue 4, Pages: 12(2000)
          
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        发布时间：2023-12-18
      • Guo Jingjie
        Issue 4, Pages: 13-16(2000) DOI: 10.15980/j.tzzz.2000.04.005
        摘要：The filling process of Ti 6Al 4V alloy false bone joint poured into permanent mold during centrifugal casting process has been analyzed theoretically. The laminar flow criterion and the variation rules of the free surface inclined angle during melt centrifugal filling process are concluded. Results showed that the laminar flow length decreases with increasing rotating speed during melt filling process under centrifugal force field. Melt free surface tends to be inclined and to be vertical at last. Moreover, under centrifugal force field, the reason for the formation of entrapped gas hole and prejudicial shrinkage and their distribution in the castings have been discussed.  
        关键词：Ti 6Al 4V Alloy;Permanent Mold;Entrapped Gas Hole   
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        发布时间：2023-12-18
      • Vol. 0, Issue 4, Pages: 16(2000)
          
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        发布时间：2023-12-18
      • Xiong Yancai
        Issue 4, Pages: 17-18(2000) DOI: 10.15980/j.tzzz.2000.04.006
        摘要：Casting process for near closed hollow ring\|\|a typical structure for complicated thin walled aluminum alloy casting is studied. The resin sand with high collapsibility is chosen to make the core of the near closed hollow ring on the basis of many technological experimentations through analysis of structure and process. The larger complicated thin walled aluminum alloy castings with near closed hollow ring have been developed  
        关键词：Near closed Hollow Ring;Aluminum Alloy Casting;Casting Process;Resin Sand   
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        发布时间：2023-12-18
      • Hu Jianhua
        Issue 4, Pages: 19-21(2000) DOI: 10.15980/j.tzzz.2000.04.007
        摘要：The technology in squeezing casting with indirect right direction squeezing for rudder is studied. The forming regulation during molten metal flowing in mold and influence of individual pressure stage on forming performance are analyzed. Some reasonable technological parameters for squeezing casting are given  
          
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        发布时间：2023-12-18
      • Vol. 0, Issue 4, Pages: 21(2000) DOI: 10.15980/j.tzzz.2000.04.008
          
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        发布时间：2023-12-18
      • Yang Jiakuan
        Issue 4, Pages: 22-24(2000) DOI: 10.15980/j.tzzz.2000.04.009
        摘要：Thermal degraded product of EPS in mold cavity for the lost foam casting with vacuum were analyzed by gas chromatography. Effects of pouring temperature, vacuum rate and permeability of the coating layer on the components of thermal degraded products of EPS were investigated. The results showed that pouring temperature play a critical role on components of thermal degraded product of EPS and gas evolution in mold cavity, which has an effect on the front shape of the molten metal. With the increase of vacuum rate and permeability, the thermal degraded products of EPS remove from the mold cavity more quickly and stay in high temperature area shorter, so gas evolution decreases.  
        关键词：Lost Foam Casting Process;Expanded Polystyrene;Gas Chromatography;Flowing Pattern   
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        发布时间：2023-12-18
      • Liang Shuhua
        Issue 4, Pages: 25-26(2000) DOI: 10.15980/j.tzzz.2000.04.010
        摘要：CuCr pseudobinary alloys were prepared by electric arc melting. Microstructure and properties were studied. The results showed that CuCr alloy fabricated by arc has well distributed structure and fine grain and good properties and high density .  
        关键词：Arc Melting;CuCr Alloy;Microstructure;Properties   
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        发布时间：2023-12-18
      • Han Changren
        Issue 4, Pages: 27-29(2000) DOI: 10.15980/j.tzzz.2000.04.011
        摘要：A simplified pattern making process that workpiece is reproduced to make casting directly is introduced. A special molding material—expansion plaster used for this process could obtain 3% expansion after being treated, which is beneficial to compensate dimensional contraction for plaster mold drying and alloy solidification. Using proper baking and pouring process for plaster mold,the castings with qualified size and good surface quality could be obtained.  
        关键词：Plaster Mold Casting;Molding Material;Pattern Making;Casting Process   
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        发布时间：2023-12-18
      • Vol. 0, Issue 4, Pages: 29(2000)
          
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        发布时间：2023-12-18
      • Vol. 0, Issue 4, Pages: 29(2000)
          
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        发布时间：2023-12-18
      • Zhang Binghui
        Issue 4, Pages: 30-33(2000) DOI: 10.15980/j.tzzz.2000.04.012
        摘要：The performance, merits and demerits of various typical mid frequency induction furnace at present are reviewed briefly. Features and application prospect of voltage series connection resonance mid frequency induction furnace are described.  
        关键词：Mid frequency Main;Induction Furnace;PC Management   
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        发布时间：2023-12-18
      • Liu Xulin
        Issue 4, Pages: 34-36(2000) DOI: 10.15980/j.tzzz.2000.04.013
        摘要：A expert system for analysis of casting defects （SSCDA） is developed based on hardware/software condition of 586 PC/windows 95, visual foxpro 5.0. Method of generating specification knowledge is adopted by SSCDA and specific problem is resolved by menu drive. Analysis and solution methods to casting defects in cast iron and non ferrous alloy castings for foundry expert are simulated successfully. The real problem in foundry production is resolved.  
        关键词：Foundry;Casting Defect;Expert System   
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        发布时间：2023-12-18
      • Vol. 0, Issue 4, Pages: 36(2000)
          
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      • Vol. 0, Issue 4, Pages: 36(2000)
          
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        发布时间：2023-12-18
      • Guo Zupei
        Issue 4, Pages: 37-38(2000) DOI: 10.15980/j.tzzz.2000.04.014
        摘要：A new technology of cast hollow valve jib using phenol resin sand in 2ZZ8640 hot box shoot core machine is described. In order to product qualified casting, combined pressure gate with high trapezium gating system is selected. In condition of ensuring shell to be shot fully, shooting meatus should be fewer and well distributed and guide board is designed on water cooling shoot board.  
        关键词：Shell Mold;Gating System;Flowing Line Hollow Valve Jib   
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        发布时间：2023-12-18
      • Vol. 0, Issue 4, Pages: 38(2000)
          
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        发布时间：2023-12-18
      • Lu Zhongzhi
        Issue 4, Pages: 39-40(2000) DOI: 10.15980/j.tzzz.2000.04.015
        摘要：Specimen of typical hard spot in aluminum alloy die casting is analyzed. The cause for formation of hard spots is discussed and effective methods to prevent hard spot are proposed.  
        关键词：Y112 Alloy;Die Casting;Hard Spot   
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      • Vol. 0, Issue 4, Pages: 40(2000) DOI: 10.15980/j.tzzz.2000.04.016
          
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        发布时间：2023-12-18
      • Xiong Caiyu
        Issue 4, Pages: 41-42(2000) DOI: 10.15980/j.tzzz.2000.04.017
        摘要：A new technology of squeezing casting for small piston is developed successfully with old Y41 63 type equipment. Design of squeezing die as well as good quality and low cost of piston with squeezing casting are introduced.  
        关键词：Squeezing Casting;Piston;Die Design   
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        发布时间：2023-12-18
      • Xia Zhenjia
        Issue 4, Pages: 43-44(2000) DOI: 10.15980/j.tzzz.2000.04.018
        摘要：Influence of pressure applied on the mold after pouring on the surface status and mechanical properties of aluminum castings in lost foam casting is investigated. The results showed the applied pressure is beneficial to eliminate grainy surface and cold shut because of improving filling ability. It improves the tensile strength and density slightly as a result of depression of pore formation. Prolonged time difference between pressures applied on both gate and casting surface results in the casting surface boss and burning on. Inadequate pressure maintaining time degrades the mechanical properties.  
        关键词：Lost Foam Casting;Pressure;Aluminum Alloy   
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        发布时间：2023-12-18
      • Ye Jiuxin
        Issue 4, Pages: 45-46(2000) DOI: 10.15980/j.tzzz.2000.04.019
        摘要：Preparation process of colloidal silica coating and compound shell making technology are introduced. In addition, the application results has been analyzed briefly.  
        关键词：Colloidal Silica;Sodium Silicate;Coating;Investment Casting   
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        发布时间：2023-12-18
      • E Wenfeng
        Issue 4, Pages: 47-49(2000) DOI: 10.15980/j.tzzz.2000.04.020
        摘要：A new technology for making bronze art casting is introduced. Through adjusting properties of the coating to meet the requirement for bronze art casting, a newly developed art casting is opened up by using the transferred coating for precision forming technique in combination with bronze art casting. Aimed mentioned above technique, an approach to coating constituents, spraying parameters and molding process is made for better resolving the main problem concerning self hardening transferred coating application to bronge art casting.  
        关键词：Transferred Coating;Bronze;Art Casting   
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        发布时间：2023-12-18
      • Zhang Pingzhi
        Issue 4, Pages: 50-52(2000) DOI: 10.15980/j.tzzz.2000.04.021
        摘要：Technique parameters of horizontal continuous casting of Al Sn alloy billet based on self designed horizontal continuous casting machine are chosen. Crystallization feature and reason for longitudinal crack of horizontal continuous casting billet are analyzed. Al Sn alloy billet of qualified 15 mm×150 mm specification is manufactured successfully by horizontal continuous casting. The use of Al alloy billet and steel strip for manufacturing Al Steel bimetallic bush by rolling process is done successfully too.  
        关键词：Horizontal Continuous Casting;Al Alloy;Axle Bushing   
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        发布时间：2023-12-18
      • Vol. 0, Issue 4, Pages: 52(2000)
          
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        发布时间：2023-12-18
      • Vol. 0, Issue 4, Pages: 52(2000)
          
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        发布时间：2023-12-18
      • Zhu Hongfan
        Issue 4, Pages: 53-54(2000) DOI: 10.15980/j.tzzz.2000.04.022
        摘要：Procedure rules and fundamental principle of surface colouring of Cu and Cu alloy are investigated. Chemical reactive mechanism of surface colouring of Cu and Cu alloy is probed also.  
        关键词：Cu and Cu Alloy;Surface Treatment;Mechanism of Colouring.   
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      • Vol. 0, Issue 4, Pages: 54(2000)
          
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      • Vol. 0, Issue 4, Pages: 55-56(2000) DOI: 10.15980/j.tzzz.2000.04.023
          
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      • Vol. 0, Issue 4, Pages: 56(2000) DOI: 10.15980/j.tzzz.2000.04.024
          
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      • Vol. 0, Issue 4, Pages: 57(2000) DOI: 10.15980/j.tzzz.2000.04.025
          
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      • Vol. 0, Issue 4, Pages: 58(2000) DOI: 10.15980/j.tzzz.2000.04.026
          
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      • Vol. 0, Issue 4, Pages: 59(2000) DOI: 10.15980/j.tzzz.2000.04.027
          
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      • Vol. 0, Issue 4, Pages: 60-61(2000) DOI: 10.15980/j.tzzz.2000.04.028
          
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      • Vol. 0, Issue 4, Pages: 61(2000)
          
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