最新刊期

    卷 , 期 6 , 1995
    • Issue 6, (1995)
      摘要:In this paper,the particles of Al-Si alloy with 12.54 percent of silicon were producedby nitrogen atomization.These particles were heated to 700℃ and re-melted.The molten of Al-Sialloy with 13.23 percent of silicon and modified with Sr has been treated with direct current. Theeffect of different processing condition on the morphologies of eutectoid silicon in Al-St alloy wasinvestigated with TEM and SEM.Results show that in samples which were produced using atomized particles or re-melting treatment,the morphologies of eutectoid silicon were spheroidal or ribbon like,while those modified with Sr,the eutectoid silicon presented some curved fibrous shape.After direct current treatment,the morphologies of eutectoid silicon could be changed intospheroidal.Their particle size was within 50-200 urn.  
      关键词:Al-Si Alloys;Speed Solidification;Direct Current Treatment;Morphologies of Eutectoid Silicon   
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      发布时间:2023-12-18
    • Gao Yixi Diao Yuhua
      Issue 6, (1995)
      摘要:As the kind of plaster and the technology of process were fixed,the influence of water(temperature of water,underground water,distill water.magnetizing water)on properties ofplaster mold has been studied.Experimental results show that when temperature of water is raisedthe flowability of plaster slurry is decreased the gelation time is shortened and the strength an4shrinkage increased with distilled water and magnetizing water,the strength and shrinkage are increased obviously.  
        
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    • Issue 6, (1995)
      摘要:The MgO-based ceramic core has been investigeted.The production practice of hollow castings of stainless steels,casting steels and nickel--base alloys has shown that application ofthis MgO-base core is satisfied under air,vacuum and directional solidification condition.  
      关键词:Hollow Casting;Ceramic Core;Stainless Steel;Casting Steel;Nickel-base Alloy   
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      发布时间:2023-12-18
    • Issue 6, (1995)
      摘要:A new type coating used for Al-Li alloy melting and casting has been studied. Itshowed that the coating exhibited good chemical stability.There was no reaction between the coating and Al-Li alloy melt and the iron crucible and the tools were not corroded by the coating so thatthe composition and impurity of alloys could be controled effectively.In addition,the coating layerwas uniform,tight and easy to be cleaned.  
        
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      发布时间:2023-12-18
    • Issue 6, (1995)
      摘要:It is known that thermal analysis method can record the time-temperature curves of aspecimen during solidification. In this paper,according to the thermal analysis curves and manyexperiments data,a compound rule of Na-Mg modification for Al-St Alloy has been obtained, simultaneously mathematical calculating formulas between △T and σb is put forward. Finally calculated numbers had been compared with the experimental results.the facts have proved that thismethod is very useful to production.  
      关键词:Aluminium Alloys;Na-Mg Modification;Thermal Analysis Method   
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    • Issue 6, (1995)
      摘要:增氧机蜗轮液态挤压铸造华南理工大学吴春苗渔业生产中需用大量的增氧机,蜗轮通常采用钢合金ZQSn10-1铸造。高铝锌基合金作为一种结构材料和耐磨减摩材料,在力学性能、工艺性能、经济性等方面都有很大优越性。我们应用高铝锌基合金代替铜合金,制作增氧机蜗轮,...  
        
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      发布时间:2023-12-18
    • Issue 6, (1995)
      摘要:采取综合措施提高铝活塞质量石家庄内燃机配件总厂刘伏梅1问题的提出我厂铝活塞铸件(以下简称活塞)生产基本采用手工模浇注,生产工艺不能满足产品质量和节材降耗的要求,生产实践证明,用这种方法浇注活塞,缩松(孔)废品率高,内在质量差,使用性能欠佳,严重影响活...  
        
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    • Issue 6, (1995)
      摘要:简要地叙述了RE-Cu添加剂的研制工艺,并从生产实践的角度出发,讨论了RE-Cu添加剂的脱氧、提高导电性、细化晶粒和强化基体的应用效果。  
      关键词:稀土铜;添加剂;细化晶粒;脱氧;导电性   
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    • Issue 6, (1995)
      摘要:通过制模工艺实践,论证了旧的中熔点锌基合金成形模零件结构设计、铸造工艺改进的必要性以及改进后的优点与显著效果。  
      关键词:锌基合金;成形模;覆盖件   
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    • Issue 6, (1995)
      摘要:铸铁件冷硬呋喃树脂砂实型铸造技术的应用江麓机械厂朱文旭根据我厂铸造生产现状,为解决单件、小批量、大中型复杂铸铁件生产周期长、经济效益差等问题,我厂于1992年开始进行“冷硬味哺树脂砂实型铸造生产技术”的研究,经过一年多时间的摸索、试验与试用,终于在实...  
        
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      发布时间:2023-12-18
    • Issue 6, (1995)
      摘要:彩色显像管玻璃模具的成套阳极模研制武汉机械工艺研究所何湘平我国是世界彩电生产大国,彩色显像管生产线从国外引进,而成套的显像管模具及表面处理的阳极模也是从国外进口的。各种规格的阳极模包含锥凸、凹模,屏凸、凹模和模圈等5种模具。阳极模从国外进口价格昂贵,...  
        
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      发布时间:2023-12-18
    • Issue 6, (1995)
      摘要:针对大型、薄壁、复杂钛铸件容易产生浇不足、冷隔、气缩孔等缺陷及变形、裂纹等质量问题,进行工艺摸索,采取了机加工石墨型、缝隙式顶注,设计并安装标准控制块、设置阻力点、加反形量等工艺措施,一次性浇注成功了重110kg、外形尺寸为1095min×822min×756mm、壁厚为9mm的弯管式钛合金铸件。通过该产品的试制,为我国大型钛铸件生产积累了经验。  
      关键词:钛铸件;石墨型;浇注系统   
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      发布时间:2023-12-18
    • Issue 6, (1995)
      摘要:根据水基压铸脱模剂的特性,在应用实践和文献引证的基础上,综述了压铸用水基脱模剂的组分特点、润湿温度、对模具寿命及压铸件质量的影响以及使用中应注意的几个问题。  
      关键词:压铸;脱模剂   
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    • Issue 6, (1995)
      摘要:提高1t中频感应电炉炉衬寿命的经验沈阳重型机器厂刘冶1989年我厂安装了一台具有80年代国内先进水平的KGPS-l/500型可控硅It中频感应熔铜电炉。电炉投产使用后,由于我们对这种熔铜电炉炉衬的粒度配比、捣制、烘烤、烧结、使用等方面经验不足,存在着...  
        
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    • Issue 6, (1995)
      摘要:感应电炉高铝矾土炉衬的应用永清县通达机车配件有限公司武增会河北工业大学李景仁1材料选择高铝矾土为AI。O3-SIOZ系耐火材料。由表1可知,纯AI。O3-SIO。系统,当AI。O。的含量为72%以上时,在1700℃的高温下,其液相含量为零。表IAI。...  
        
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      发布时间:2023-12-18
    • Issue 6, (1995)
      摘要:不锈钢#304和#316的简易区别方法南京鑫世纪特殊钢有限公司孙明伟不锈钢精铸生产中常遇到要快速区别不同材质的工件,而又不好将工件表面磨出工艺平台拿到分光仪上检验的这种情况。这时,可采用如下简易方法来区别”304「SO.06%C,(17~19)%C...  
        
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    • Issue 6, (1995)
      摘要:Chem-Trend冲头润滑油瑞源国际公司以前,人们并没有意识到冲头润滑油的重要作用。随着技术的不断提高,Chem-Trend公司开始研究影响铸件质量的各方面因素,率先开发出新型的冲头润滑油。70年代,25%的美国压铸商开始使用水基的或清洁油基的冲头润...  
        
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    • Issue 6, (1995)
      摘要:德国STRIKO公司的铝合金和锌合金的自动定量技术德国STRIKO公司1铝合金和锌合金的自动定量定量炉将保温炉和气动定量装置结合成一体,其炉容可从500kg铝至3500kg铝。由于保温室采用了封闭式结构,因此,保温所耗的能量很低,例如,对于一台容量为...  
        
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    • Issue 6, (1995)
      摘要:R-20涂料澳大利亚派罗特克公司派罗特克公司提供的R-20涂料,应用于熔融硅村里、竖管、耐火可铸料、耐火砖衬里、浮子、钢水包及浮动缓冲板等表面涂刷。R-20涂料容易与水、耐火水泥、硅酸钠及其他的材料混合。R-20涂料可用刷子刷、蘸或喷。用途:涂于与铝液及...  
        
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      发布时间:2023-12-18
    • Issue 6, (1995)
      摘要:1995年总目次1995年总目次...  
        
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