最新刊期
      卷 ， 期 6 ， 1992
      • Xie Jingpei Tu yimin Zhu Yaofeng Ma Ting
        Issue 6, Pages: 1-4(1992)
        摘要：Wear characteristic, microstructures and mechanical properties of Zn-base Al alloy have been investigated,and the contrast wear experiment between Zn-base alloy and Pb-base babbitt alloy has been made under equitable conditions. Results show that Zn base alloy can meet the working conditions of sliding bearing. The wear resistance of Zn-has alloy is better than that of the babbitt alloy:but the price of Zn-base alloy is only 17%46% of babbitt alloy. It is recornmendable that the new Zn-base alloy is an ideal material for sliding bearing under high load and low speed.  
        关键词：轴承材料;轴瓦材料;锌基合金   
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        发布时间：2023-12-18
      • Jiang Buju Nan Miying Guo Jianzheng Yan Shuangjing
        Issue 6, Pages: 5-7(1992)
        摘要：Some influence factors on the strength of silicate-bound shells have been systemdy studied, and the process flowsheet and parameters to make a super-thin and high strength shell have been proposed. The raped vaporization of the pattern heated directly in furnace causes the shell to be easily crack. Thus three kinds of stripping processes have been studied for keeping the shells from craking. It is proposed in practical viewpoint to spripp the shells at lower temperatures but to roast them at higher ones.  
        关键词：实型铸造;精铸;超薄型壳;负压造型   
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        发布时间：2023-12-18
      • Wang Keyou Xiao Zehui
        Issue 6, Pages: 8-11(1992)
        摘要：A ceramic slurry bound by aluminium phosphate and hardened by metallurgical magnesite calcined （passivation） has been developed. A 3Cr2W8V steel hot pressing die has been produced by using this slurry, and the application of this die in a production line is satisfactory. It suggests that the inorganic phosphate slurry used for ceramic casting is not only possible but also advantageous.  
        关键词：磷酸铝;陶瓷型铸造;钝化   
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        发布时间：2023-12-18
      • Cheng ji
        Issue 6, Pages: 12-15(1992)
        摘要：In high-manganese aluminium bronze,there are micro-inclusions such as alundum,mullite and spinel; and micro-inclusions such as Al2O3, MnS FeS and FeO MnO. Different filtrating mediums have been used in purifying process, including corundum spheres and alumina bricks. The results show that the filtration process provides an excellent effect on eliminating inclusions in the molten metal. Fatigue strength of the material can be raised by 41.8% and elongation by 9. 7% ; while tensile strength can slightly be improved.  
        关键词：过滤;净化;过滤介质;铝青铜   
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        发布时间：2023-12-18
      • An Geying Peng Delin Lu Zheng
        Issue 6, Pages: 16-17(1992)
        摘要：The method of smelting Al-Li Alloy by inserting solid lithium into liquid aluminium alloy is studied. The experiment prores that if the liquid metal is fully protected from oxidation, the loss of Li can be reduced greatly. The flux of 40%LiF and 60%LiCl is proved to be better than that of 50%LiF and 50%LiCl by DTA technique. By blowing high pure argon into the liquid Al-Li Alloy, it can be refind and only a little loss of Li is found in the process.  
        关键词：铝锂合金;熔炼;压入法加锂   
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        发布时间：2023-12-18
      • Xin Qibin Tong Mingduo
        Issue 6, Pages: 18-20(1992)
        摘要：The effects of baking refractory filler, the drying process of coating and the kinds and amount of bond on the amount of gas evolution from the coating mixture used in centrifugally casting thin wall heat-resistant steel tube have been researched. The measures were put forward to prevent surface blowholes on steel tubes. Baking process of coating materials and drying process of coating were formulated. The test shows that no surface blowhole formed when the amount of gas evolution was less than 5ml/g.  
        关键词：涂料发气性;离心铸造;表面气孔   
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        发布时间：2023-12-18
      • Issue 6, Pages: 20(1992)
        摘要：<正> 全国铸造学会特种铸造及非铁合金技术委员会在山东工业大学的大力支持下,于1992年9月21日至9月25日在山东省招远市温泉宾馆召开了《全国第六届特种铸造及非铁合金学术年会》。参加会议的代表来自全国27省（市）自治区,共257人。 会议共收到论文139篇,选出116篇编印了《第六届特种铸造及有色合金学术会议》论文集。会议过程中在有色合金、熔模精密铸造及特种铸造三个分组会议上进行宣读和讨论。宣读的论文体现了当前特种铸造及有色合金理论与技术的发展方向和先进水平,具有以下特点:  
          
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        发布时间：2023-12-18
      • Zhang Shaoxing Xu Jianhui Su Jianyu
        Issue 6, Pages: 21-24(1992)
        摘要：The microstructure and mechanical properties of alloy ZL104 modified by rare earth are a little inferior to three-component modifier, but the alloy can come up to the State Standard （GB） and the Factory Standard. The hardness of the castings after T6 treatment is high which is advantageous to rigidity, thereby the castings possess good machinability. Because the Rare earth modification gives lone effective time, reduces the rejects due to coarse grain and dross hole, hence the casting’s qualified rate is raised. Rare earth modification solves the problem that the crucible is difficultly protected by coating from the etching by three-component natrium salt which leading the aluminium-liquid to pick up iron. Rare earth metals have good degasification effect, reducing the degree of dross hole. This technology is suitable to low pressure die casting.  
        关键词：稀土变质;汽缸盖铸件;铝硅合金   
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        发布时间：2023-12-18
      • Lin Zhongfeng
        Issue 6, Pages: 25-28(1992)
        摘要：The functional relationship between TF （casting solidification time） and （mold thickness/ casting thickness） was determined based on experiment. A new parameter for shrinkage prediction of the near eutectic alloy was obtained according to the theary of microscopic shrinkage feeding channel. It becomes the main foundation for designing a permanent mold. And a new designing method was presented, by which a permanent mold can be designed rapidly and reasonably.  
        关键词：AL-Si合金;金属型;设计   
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        发布时间：2023-12-18
      • Issue 6, Pages: 29-31(1992)
        摘要：正交试验及生产实践表明,在熔模铸造中合理使用铸钢冒口覆盖剂,可使截球形冒口得到比球形冒口更高的补缩效率,可节约钢水17％左右,制壳材料消耗下降10％,劳动生产率提高10％以上。  
        关键词：截球形冒口;冒口覆盖剂;熔模铸造   
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        发布时间：2023-12-18
      • Issue 6, Pages: 32-33(1992)
        摘要：介绍含Ti铜合金的加Ti工艺方法列出了对比分析试验资料。以Cu--Ti中间合金加Ti、中间合金加入后快速熔化,效果最好。  
        关键词：铜合金;Ti;加Ti工艺   
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        发布时间：2023-12-18
      • Issue 6, Pages: 34-36(1992)
        摘要：阐述了硅元素在铝硅合金中的作用以及过共晶铝硅合金用于活塞生产的优点。采用正交试验的方法。探讨了ZAS23过共晶铝硅合金熔炼和热处理的工艺及参数。  
        关键词：活塞合金;过共晶;铝硅合金   
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        发布时间：2023-12-18
      • Issue 6, Pages: 37(1992)
        摘要：包头某活塞厂生产中曾发现在其产品外圆表面有为数不多的圆片出现,片厚度不足1mm,圆片直径为2～5mm不等,聚集出现于同一地区的圆片数量为1～10个不等。这种缺陷使铸件表面质量不符合检验要求,故应分析加以消除。  
        关键词：活塞;共晶铝硅合金;反偏析   
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        发布时间：2023-12-18
      • Issue 6, Pages: 38-39(1992)
        摘要：<正> 5 经验 在各种类型的压铸车间内,已装备了相当数量的、带有吸震器的冲头。在任何情况下,由于吸收了震动,有可能不需用足锁模力,而且还降低了动态涨模力,如图7所示。  
          
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        发布时间：2023-12-18
      • Issue 6, Pages: 40(1992)
        摘要：<正> 黄铜铸件因结晶温度范围小,收缩大,往往产生缩孔。然而在设计铸造工艺时,只注重冒口及浇注系统尺寸,而忽视内浇口的形状及引入位置。实践证明,对于黄铜铸件来说,浇注系统尺寸（包括内浇口）在相当大的范围内变化,仍可获得合格铸件。但内浇口的形状及引入位置设计得不合理,就会产生缩孔。下面介绍我厂生产黄铜铸件的实例。1 黄铜铸件的生产条件 湿型砂的组成与性能:湿型砂的组成（重量比）:粘土砂（10/200）:15％～30％;旧砂:70％～85％;水:4.5％～5.5％。湿压强度:3.0～5.0N/cm2;湿透气率:>30。  
          
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        发布时间：2023-12-18
      • Issue 6, Pages: 41-42(1992)
        摘要：<正> 我厂每年用ZG2Cr13、ZG3Cr13及ZG4Cr13不锈钢生产的精铸件品种多、产量大（80t/年）铸件重量一般为0.15～4.6kg。众所周知,含13％铬的不锈钢是一种马氏体不锈钢,该钢种收缩率较大,导热性及塑性差,铸造应力也大,在熔模精密铸造生产中经常产生裂纹。其中ZG4Cr13尤为严重,在潜水泵转子轴套的试生产中,裂纹率达75.82％。 ZG4Cr13轴套的裂纹,在毛坯时不容易发现,精加工后就暴露出来,裂纹沿轴向分布通过低倍分析,裂纹两侧可见到氧化脱碳组织及氧化物。  
          
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        发布时间：2023-12-18
      • Vol. 0, Issue 6, Pages: 42-44(1992)
          
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      • Vol. 0, Issue 6, Pages: 45-46(1992)
          
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