最新刊期
      卷 ， 期 1 ， 1991
      • Tan Suokui,Tong Tianfu,Li Jinfu,Bai Mlnsheng
        Issue 1, Pages: 3-7(1991)
        摘要：This Paper discusses the relation among chemical components,microstructure,mechanical properties and technical condition of ductile iron in investment casting Distributing form of graphit and mechanical properties feature of various matrix microstructure are also discussed. It is proved that investment casting can obtain various microstructure and properties ductile iron and its properties get or surpass atandards of various ductile iron.  
        关键词：熔模铸造;球墨铸铁   
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        发布时间：2023-12-18
      • Gan Qing,Huang Liangyu,Zhai Chuengquan,Ding Wenjiang
        Issue 1, Pages: 8-12(1991)
        摘要：In this paper,the special phases transformation of ZHJD-2 alloy,a new high strength and anti-corrossion brass alloy was studied. By certain heat-treatment,the microconstituents of the alloy were alpha phase plus /, phase. The dispersed X phase was the complex and hard compound formed by Mn and Fe. After heat-treatment the contents of Al and Ni were higher in grain boundaries and Mn content was higher in grains. Al and Mn benefit the stabilization of beta phase.  
        关键词：耐蚀高强度黄铜;锰黄铜   
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        发布时间：2023-12-18
      • Beijing Internal Combustion engine factory
        Issue 1, Pages: 13-16(1991)
        摘要：The influence of particle size of silica flour on the properties of coating and shell has been introduced in this paper. In order to improve surface finishment of casting,one can use the mixture of coares and fine flour ,because the mixfure has better properties .  
        关键词：熔模铸造;石英粉   
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        发布时间：2023-12-18
      • Mao Yiyuan,Ji Weizhi,Xu Zhichang,Xu Jiping
        Issue 1, Pages: 17-19(1991)
        摘要：The paper analyzes the processing of squeeze ccasting, and the casting, mechanical and serving properties of different aluminum alloys Used in left and right cranks of aluminum parts of bicycle. It is concluded that the forging aluminum alloys,such as LD5 and 6063 can meet the requirements of forging materials as long as the suitable processing parameters of squeeze casting is found and the heat treatment is used.  
        关键词：自行车曲柄;铝合金;挤压铸造   
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        发布时间：2023-12-18
      • Tang Yajun,Yu Yang,Zhang Jinghua,Li Ying’ao,Hu Zhuangqi
        Issue 1, Pages: 20-22(1991)
        摘要：In tyis article,the microstructure and sintering characteristic of the electrofused mullite and corundum, as well asits influence of the nature of mould are described. What is more ,the effect of inpurities in mould refractory material and liquid metal on casting surface quality after directional solidification are discussed. The results show that the electrofused mullite coalesced with corundum is an ideal material for shell moulds in directional solidification.  
        关键词：定向凝固;型壳材料;尺寸精度   
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        发布时间：2023-12-18
      • Liu Qingxing,Wang Yunai,Chen Xingrong
        Issue 1, Pages: 23-27(1991)
        摘要：The influence of chemical composition and heat-treatment technology on the mechanical property and metallographic structure of ductile iron pipe was studied authers found that the heat-treatment specification were controlled appropriately,and the nodularizer of Re-Mg was used,the technology of metallic pattern centrifugal casting can be applied to the production of ductile iron pipe .although the local pig iron was used. And ductile iron pipe can reach the technical requirement of the international standard-ISO2531.  
        关键词：金属型离心铸造球墨铸铁管   
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        发布时间：2023-12-18
      • Wu Menghuai,Wang Youxu,Zhang Qixun
        Issue 1, Pages: 28-31(1991)
        摘要：In this paper, the temperature distributions and solidification processes in aluminum alloy rode-shaped castings with steel chills are experimentally monitored and numerically simulated. The heat absorptions in the chills are calculated as the function of the time from the experimental and numerically calculated results. The effecient chill chickness Heff （mm）, which will be directly used for chill thickness choising,is obtained by comparing the heat absorption calculation and the solidification time in the casting. With an aim of design of chills,the cooling surface factors （k） of the chills for aluminum castings are given. The inference of the chill thickness and the casting thickness on the k is also discussed in this paper.  
        关键词：铝合金;冷铁   
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        发布时间：2023-12-18
      • Xiong Yurong
        Issue 1, Pages: 32-33(1991)
        摘要：By taking the manufacture of ZCuA19Fe3Pb2 and ZCuA19Fe3Mn2Pb2 as Practical example, this thesis develops points that lead in copper alloy can function as"graphite"in ferroalloy and tin-free bronze can be made with good self-lubrication and castability for centrifugal casting, high strength, hardness, high abradability and low cost by using albronze or high manganese albronze as base metal with just the right amount of lead  
        关键词：无锡青铜;减磨作用   
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        发布时间：2023-12-18
      • Issue 1, Pages: 34-35(1991)
        摘要：针对含铁铝青铜在砂型铸造中形成气孔夹渣的原因进行了全面的分析,并从熔炼造型工艺两个方面提出了消除气孔夹渣的措施。  
        关键词：铁铝青铜气孔夹渣   
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        发布时间：2023-12-18
      • Issue 1, Pages: 36-37(1991)
        摘要：本文介绍我厂在保证质量的前提下,借助于正交试验法,对Ti的代用品TiO2的加入量及配制工艺进行优选的经验。获得了良好的效果,即保证了生产的正常进行,又取得了一定的经济效益。  
        关键词：Sn—Ti;正交试验   
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        发布时间：2023-12-18
      • Issue 1, Pages: 38(1991)
        摘要：<正> C84400化学成份、机械性能见表1、表2。 表1 化学成份 表2 机械性能 属于含铅半红黄铜,其钢液易吸气,铸件易产生偏析。 生产中出现的问题 开始生产C84400铜铸件时,由于气孔缺陷而报废的铸件达50%,后来通过浇冒口工艺的改进,使废品率有所下降,但浇出的试棒机械性能均达不到表2所规定的要求,使铸件成批报废。对此我们进行了分析,提出了一些改进措施,通过摸索,终于找到了冶炼C84400的成功经验。  
          
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        发布时间：2023-12-18
      • Issue 1, Pages: 39-40(1991)
        摘要：<正> 一、概 述 我公司生产的ZL109铝活塞是在铸造成型,通过515±5℃,保温3小时固溶处理及180±10℃保温4小时,人工时效处理,达到规范要求后而使用的。我公司年生产量较大,通过以上传统的工艺处理这些铝活塞,耗费电能甚大,基于节能和降低工件成本的目的和结合我公司生产周期较长这一特点,我们通过探索试验,采取了一种新的工艺。即ZL109铝活塞正常淬火+自然时效工艺,这种工艺处理的结果证实:传统的处理ZL109铝活塞工艺过于保守,而新的工艺处理ZL109铝活塞不会使其机械性能恶化,且减少了工序,从而达到了节能的效果,降低了ZL109铝活塞的成本。  
          
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        发布时间：2023-12-18
      • Issue 1, Pages: 41(1991)
        摘要：<正> 我们应用ZL102铝合金通过变质处理代A8铝镁合金生产×××雷达上盖。 一、变质剂成份选择制备: 我们所采用变质剂由钠盐和钾盐混合而成:其中NaF35％、NaCl45％、KCl10％重熔。KCl、NaCl的作用是和NaF组成混合盐降低溶点,例如:NaF的熔点为990℃,加入一定的NaCl、KCl而组成三元变质剂,熔点明显下降,一般变质温度（73～750℃）处于熔融状态,能促进反应式的进行。从而提高变质的速度和效果。另外,在变质剂中加入10％的冰晶石粉[Na3AlF6]后,同时有变质、覆盖、精炼的作用。很适用于我们要求高质量的重要复杂铸件。 我们采用重熔法,按比例将混合好的变质剂放在  
          
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        发布时间：2023-12-18
      • Issue 1, Pages: 42-43(1991)
        摘要：<正> 为了在压铸生产中方便、准确地再现和调整压射参数,保证和提高产品质量,意大利Triulzi公司生产的Castmatic-400型卧式冷室压铸机采用了压射速度（SPEED-O-TROL）和压射力（PRESS-O-TROL）自动测量监控显示仪。压射速度传感器安装在压射行程开关控制机构中,见传动系统图1。该机构的功用是:（1）控制压射系统的一级和二级快压射运动。（2）在压射循环中,严格地测定和显示各级压射速度值,并与预先通过数字转换开关输入到自动测量监控显示仪中的压射速度（工艺要求）值进行对比,如需修正,由报警指示器向操作者报警,通过调整有关液压元件,使实测显示值与给定值达到一致。  
          
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        发布时间：2023-12-18
      • Issue 1, Pages: 44(1991)
        摘要：<正> 1.我们采用DATACESS/PROCESSTROL的理由: 由于是专业铸造,我们必须永远具备按照发展现状制造铸件的条件: 用户要求复杂设计的零部件具有少气孔结构,光洁表面与严格的尺寸公差,并一贯要求高的质量标准。 为了能胜任此任务,我们所需要的铸造设备,应能使我们《认真解决》大量决定质量的因素（铸造参数）,换言之,我们要能对压射参数进行测量,监控（保持在允许范围内）并提供文件,此外,它的设定必须具有再现性。 DATACESS/PROCESSTROL以取信用户的方式为我们提供质量保证的一切可能性,这就是为什么我们在1986年和1987年所购的的布勒压铸机（三台H—400B、一台H—630B、二台H—800B、三台H—2000B）都配备了DATACESS/PROCESSTROL系统。  
          
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        发布时间：2023-12-18
      • Issue 1, Pages: 45-46(1991)
        摘要：为了应付你的日趋复杂的质量保证任务,你需要一位经验丰富的解决这类问题的伙伴。 布勒公司有这方面的经验,这可由我们产品的高质量标准,我们的制造方法以及我们已找到的解决我们用户问题的方法给予充分证明。 以介绍DATACESS/PROCESSTROL作为开端,我们已经取得很大的成就,接着我们要逐步扩充和溶合更多的要素,以便提高供给我们用户的生产系统的经济性并减少企业经营冒险性,这将保证我们用户的工厂和设备的价值,并且更加容易迎合未来新的质量要求。  
          
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