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粘结剂及冷却速度对涂铸层耐磨性的影响
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作者 杨世杰 栗卓新 毛筱峰 《兵器材料科学与工程》 CAS CSCD 北大核心 1991年第9期12-17,共6页
本文总结了涂铸工艺所用粘结剂的粘度和浓度的关系及其对涂层性能的影响,试验表明,铁基喷焊合金粉末,粉302和50%,(CI—Fe)在不同金属垫板激冷的条件下,其硬度比砂型涂铸层硬度提高2~3倍,耐磨性提高了2倍,并对涂层的组织、磨损形貌进... 本文总结了涂铸工艺所用粘结剂的粘度和浓度的关系及其对涂层性能的影响,试验表明,铁基喷焊合金粉末,粉302和50%,(CI—Fe)在不同金属垫板激冷的条件下,其硬度比砂型涂铸层硬度提高2~3倍,耐磨性提高了2倍,并对涂层的组织、磨损形貌进行了金相、电镜、能谱分析,为生产实践提供了依据。 展开更多
关键词 粘结剂 冷却 铸件 涂铸层 耐磨性
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Effect of pattern coating thickness on characteristics of lost foam Al-Si-Cu alloy casting 被引量:6
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作者 Majid KARIMIAN Ali OURDJINI +1 位作者 Mohd HASBULLAH IDRIS Hassan JAFARI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第9期2092-2097,共6页
An experimental study on lost foam casting of an Al-Si-Cu alloy was conducted. The main objective was to study the effect of pattern coating thickness on casting imperfection and porosity percentage as well as eutecti... An experimental study on lost foam casting of an Al-Si-Cu alloy was conducted. The main objective was to study the effect of pattern coating thickness on casting imperfection and porosity percentage as well as eutectic silicon spacing of the alloy. The results showed that increasing slurry viscosity and flask dipping time influenced the casting integrity and microstructural characteristics. It was found that thinner pattern coating produced improved mould filling, refined microstructure and higher quality castings containing less porosity. 展开更多
关键词 aluminum alloy lost foam casting coating thickness slurry viscosity dipping time POROSITY
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Experimental and FEM Study of Coated and Uncoated Tools Used for Dry Milling of Compacted Graphite Cast Iron 被引量:7
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作者 陈明 姜立 +1 位作者 郭国强 安庆龙 《Transactions of Tianjin University》 EI CAS 2011年第4期235-241,共7页
Compacted graphite cast iron (CG1) has been the material for high-power diesel engines recently, but its increased strength causes poor machinability. In this study, coated and uncoated carbide tools were used in dr... Compacted graphite cast iron (CG1) has been the material for high-power diesel engines recently, but its increased strength causes poor machinability. In this study, coated and uncoated carbide tools were used in dry milling experiment and FEM simulation to study the machinability of CGI and wear behaviour of tools. The experimental and FEM simulation results show that coated tool has great advantage in dry milling of CGI. SEM and EDS analysis of tool wear indicate the wear morphology and wear mechanism. Adhesive wear is the main mechanism to cause un- coated tool wear, while abrasive wear and delamination wear are the main mechanism to cause coated tool wear. Stress and temperature distribution in FEM simulation help to understand the wear mechanism including the reason for coat- ing peeled off. 展开更多
关键词 compacted graphite cast iron dry milling tool wear modelling
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