最新刊期

    卷 , 期 4 , 1992
    • Huang Naiyu Luo Jiong Xie Dongji Ye Shenping
      Issue 4, Pages: 1-5(1992)
      摘要:Through pouring experiments, the characteristics of flowing and filling of molten metal in EPS-V process are studied; the change and influence of vacaum value in the mould are measuted with the aid of sensors; a comparison of different gating systems is also made. The results obtained are of great aid to further studies of interactions among the metal, the mould and the evaporative plastic pattern and to the studies of forming theory of castisgs, as well as to the establishment of a reliable basis for the design of EPS-V foundry process.  
      关键词:充填;负压度;泡沫塑料模   
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      发布时间:2023-12-18
    • Zhang Wei
      Issue 4, Pages: 6-10(1992)
      摘要:The wear resistance of high aluminium zinc-based alloys containing 30, 40 and 45% wt. Al at diffrent conditions was investigated. It was shown that the high aluminium zinc-based alloys were superior to ZCuSn6Zn6Pb3 and ZCuA19Fe4 in wear resistance providing the castings are of higher soundness, and a suitable as-cast aging could improve the wear resistance of Zinc-based alloys. In addition, the effects of soundness of castings on wear resistance was analyzed, the wear resistance mechanism of these alloys was explored.  
      关键词:高铝锌基合金;健全度;耐磨性   
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      发布时间:2023-12-18
    • Issue 4, Pages: 10-13(1992)
      摘要:<正>我国首台J522型卧式滚轮二工位离心铸管机5月28日在天水铸造锻机械总厂通过了省级鉴定验收。  
        
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      发布时间:2023-12-18
    • Wang Feng Jia Zhenyan
      Issue 4, Pages: 11-13(1992)
      摘要:By means of optical metalloscope, scanning electron microscope and electronic probe, authors have examined and analysed the of breakage coarse grains section of Ti-bearing Al-Si piston alloys, The cause of piston fracture, and the wag of control have been suggested.  
      关键词:Ti;AL-Si合金;断口;鱼鳞闪亮点;Ti(AlSi)2;脆性断裂   
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      发布时间:2023-12-18
    • Xu Dong Deng Zuwei Huang Liangyu
      Issue 4, Pages: 14-18(1992)
      摘要:The filling ability of aluminium alloy ZLJD-2S in the counter-pressure sand casting process has been experimentally determined. The relationship between the filling ability and the shape modulus of castings has been obtained when the filling temperature and pressure difbereace keeping constants, ie T=710C and P=0. 06MPa.  
      关键词:反压铸造;充型能力;铝合金   
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      发布时间:2023-12-18
    • Pan Jinhua
      Issue 4, Pages: 15-18(1992)
      摘要:The effects of metallurgical factors on mechanical properties of tin bronze were invastigated, including chemical composition, melting temperature, pouring temperature, melting cycle and fcltration technique.  
      关键词:锡青铜;机械性能;冶金因素   
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      发布时间:2023-12-18
    • Bian Xiufang Zhang Guohua Zhao Shengxu
      Issue 4, Pages: 19-21(1992)
      摘要:The needle form of iron compounds in an eutectic Al-Si alloy has been changed into spheroidal form after the alloy is heated to a high temperature and poured into a permanent mold. The mechanical properties of the alloy containing 0.8%1.8% Fe have become much better obviously due to the spheroidization of needle iron compounds with spheroidized, iron compunds, the room-temperature tensile strengh of the alloy containing 1. 8%Fe is increased by 83% , the elongation at 300C is increased by 80% as compared with the alloy whose iron compounds were of needle form. The spheroidal form of the iron compounds could be remained after remelting.  
      关键词:AL-Si合金;针状铁相;球化处理   
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      发布时间:2023-12-18
    • Issue 4, Pages: 22-25(1992)
      摘要:总结了陶瓷型生产不锈钢叶轮铸造工艺。还着重分析了复杂封闭形叶轮生产存在的主要质量问题。通过对叶轮产生抬芯、气孔缺陷的部位、形状和特征分析,找到了产生上述缺陷的原因和确定克服缺陷的方法;采用加放芯撑可以彻底控制抬芯,合理设计、开设内浇口,倾斜浇注,对消除叶轮抬芯和气孔效果甚为显著。  
      关键词:叶轮;陶瓷型铸造   
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      发布时间:2023-12-18
    • Issue 4, Pages: 26-27(1992)
      摘要:考虑到离心浇铸机的能力,正确选取大型铜套离心浇铸时工艺参数,成功地浇铸出重量大于5t,尺寸为Φ500mm×4000mm的铜套。介绍了该铜套离心浇铸工艺的改进,及工艺参数的选择和校核。  
      关键词:铜套;离心铸造;工艺参数   
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      发布时间:2023-12-18
    • Issue 4, Pages: 28-30(1992)
      摘要:应用价值工程的基本原理,分析EQ140-Ⅰ双管路精铸件的废品,找出主要缺陷并进行工艺分析与工艺改进。  
      关键词:价值工程;精密铸造;缺陷   
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      发布时间:2023-12-18
    • Issue 4, Pages: 31-32(1992)
      摘要:研究了用HF-01填料模料制作厚大件熔模的模料搅拌、注蜡压力等工艺参数对熔模质量的影响。研究结果说明,HF-01填料模料是一种优良的厚大熔模铸件用模料。  
      关键词:填料模料;厚大熔模;生产工艺   
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      发布时间:2023-12-18
    • Issue 4, Pages: 33-34(1992)
      摘要:从材料力学的基本理论出发,对卧式压铸机生产中心浇口的压铸件,在采用螺旋扭断中心浇口时作了理论分析及计算公式的推导,并给出了螺旋浇口直径的实用计算公式。  
      关键词:压铸;螺旋浇口;计算公式   
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      发布时间:2023-12-18
    • Issue 4, Pages: 35-37(1992)
      摘要:在分析了大量螺旋桨设计资料和总结多年生产螺旋桨经验的基础上,找出螺旋桨铸造的规律性;对大侧斜螺旋桨的特点及砂型铸造工艺进行了讨论;并对高锰铝青铜ZCuMn14Al8Fe3Ni2的化学成分控制范围进行了探讨。  
      关键词:螺旋桨铸造;大侧斜桨;锰铝青铜   
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      发布时间:2023-12-18
    • Issue 4, Pages: 38-39(1992)
      摘要:分析了水玻璃型壳“茸毛”的析出机理及其形成过程。通过试验证明型壳经过低温焙烧是抑制“茸毛”析出的有效措施之一,并有利于提高铸件表面质量。  
      关键词:水玻璃型壳;茸毛;抑制;熔模铸造   
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      发布时间:2023-12-18
    • Issue 4, Pages: 40-41(1992)
      摘要:<正> 1 前 言 凡是有压铸的地方,皆存在着飞边问题。这就成为在常规生产中以及特别是在全自动化生产中主要攻克的对象。 飞边的形成,常常是由于动态压力峰所引起。在型腔填充阶段,大量的熔融金属在高速运动中突然受阻,而所储备的动能急骤地形成超高的压力所致。 数年来,一直在寻求控制这类有害的压力峰的  
        
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    • Issue 4, Pages: 42-43(1992)
      摘要:<正> 1 铜闸块质量分析 我厂90HP单轨吊驱动部分的铜闸块,是测绘西德铸件,其材质含易氧化的铝及易蒸发的锌,另外,还含有高熔点的元素铁、镍、锰等。产品要求硬度H13160~185(一般为80~100),生产这种高硬度铜合金铸件,如何制定正确的熔炼工艺和铸造方法是获得合格品的关键。 试验初期,采用金属型铸造棒料的工艺方法,由于合金易氧化、吸气,所以铸件加工后经常发现有  
        
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      发布时间:2023-12-18
    • Issue 4, Pages: 44-41(1992)
      摘要:<正> 熔模铸造的蜡模组焊多采用焊刀实现蜡模与浇冒系统的焊接组合。由于焊接温度过高,模料与焊刀接触部位的温度已远超过燃点,冒出大量烟雾,并经常伴有燃烧现象,不仅烧失了模料,而且恶化了工作环境,损害了操作者的健康。同时,工艺上要求制模和组焊环境应当保持恒温,为排除烟雾安装的通风除烟装置,虽对消烟有效,却又破坏了恒温。1 分析  
        
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      发布时间:2023-12-18
    • Issue 4, Pages: 45-39(1992)
      摘要:<正> 活塞是内燃机的心脏,对其质量要求较高,为保证其合金化学成份准确均匀,我厂原采用先熔制中间合金后再熔制工作合金的二次熔炼工艺方法。由于这种方法繁锁复杂,工艺能耗大,劳动效率低,且合金元素经二次高温强氧化烧损严重,与此同时使合金中氧化夹杂物增多,从而降低了合金的质量。因此,我们经过几年的实践经验总结,成功的用一次熔炼工艺替代了原先的二次熔炼工艺。  
        
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