Journal of Mechanical Working Technology最新文献_第8页

Laboratory investigation of the continuous seamless-tube rolling process (Mandrel mill process) using models 用模型对连续无缝管轧制工艺(心轴轧机工艺)进行了实验室研究

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90078-8

W. Dobrucki, P. Sobkowiak

引用次数: 2

A finite element solution of strip rolling 带钢轧制的有限元解

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90053-3

R.S. Rao, H.Y. Lee

引用次数: 3

Single residency sintering and consolidation of powder metal alloys, intermetallics, and composites by pulsed homopolar generator discharge 脉冲均极发生器放电对粉末金属合金、金属间化合物和复合材料的单驻留烧结和固结

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90044-2

W.F. Weldon, T.A. Aanstoos

{"title":"Single residency sintering and consolidation of powder metal alloys, intermetallics, and composites by pulsed homopolar generator discharge","authors":"W.F. Weldon, T.A. Aanstoos","doi":"10.1016/0378-3804(89)90044-2","DOIUrl":"https://doi.org/10.1016/0378-3804(89)90044-2","url":null,"abstract":"<div><p>Utilizing inertial energy storage the homopolar generator (HPG) is capable of delivering multimegawatt, megampere current pulses into resistive or inductive loads with high efficiency. (1) Such HPG's have been used for many years as power supplies for research in pulsed processing of metal alloy components and systems. Most of these processes rely on extremely rapid thermal excursions in the workpiece(s) caused by resistive heating during the current pulse. A new application of pulsed HPG's that carries great promise is homopolar pulse consolidation (HPC) of powder metal alloys or components.(2) In HPC, powder metal constituents are loaded into a thermally and electrically insulated die, then precompacted to an initial pressure. the “rams” of the compaction press are also the electrodes for homopolar discharge current. While in single residency, the powder compact is heated uniformly by HPG discharge current, sintering occurs, and consolidation is accomplished by hydraulic control of the consolidation press. The process is completed in approximately one sec, with unaided cooling to room temperature on the order of 100 sec, depending on compact mass. Microstructural control is closely tied to beginning particle size and distribution. Traditionally unsinterable alloys have been consolidated using HPC. Novel intermetallic alloys and phases have been produced. Cermets and other composites can be produced, as long as the continuous matrix is conductive. New tooling designs allow for controlled atmospheres, near-net shapes, and automated manufacturing.</p></div>","PeriodicalId":100801,"journal":{"name":"Journal of Mechanical Working Technology","volume":"20 ","pages":"Pages 353-363"},"PeriodicalIF":0.0,"publicationDate":"1989-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-3804(89)90044-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91758389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Ackmowledgement of Referees 推荐人确认书

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90083-1

引用次数: 0

Kinematic analysis and workspace determination of a 6 dof ckcm robot end-effector 6自由度ckcm机器人末端执行器的运动学分析与工作空间确定

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90038-7

Charles C. Nguyen , Farhad J. Pooran

引用次数: 63

Manufacture of a cermet/ceramic coated steel plate by a combined plasma spraying and hot rolling method 用等离子喷涂和热轧相结合的方法制备陶瓷/陶瓷涂层钢板

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90042-9

Masao Murakawa, Shuichi Watanabe

{"title":"Manufacture of a cermet/ceramic coated steel plate by a combined plasma spraying and hot rolling method","authors":"Masao Murakawa, Shuichi Watanabe","doi":"10.1016/0378-3804(89)90042-9","DOIUrl":"https://doi.org/10.1016/0378-3804(89)90042-9","url":null,"abstract":"<div><p>In this study we propose a plasma spraying technique which is combined with the continuous hot rolling method to realize not only an inexpensive but also a high productivity manufacturing process of steel plates coated with high grade materials (among them are cermets and ceramics) and having good adhesion between the coating and the steel substrate. This study also aims at investigationg the best suited combination of working parameters to demonstrate the feasibility of this process.</p><p>More specifically, coated steel plates with two kinds of coating materials are made with this technique; first WC-Co coating (a cermet coating) is tried aiming at good wear resistance and then a Y<sub>2</sub>O<sub>3</sub> stabilized ZrO<sub>2</sub> coating ( a ceramic coating ) having Ni-Cr alloy as an undercoat is tried to realize a thermal barrier means and/or an anti-corrosive means at high temperatures. Then several factors governing this technique, i.e., coating thickness, rolling reduction rate and heating temperature ( for hot rolling ) are investigated in order to manufacture the coated steel plate having sound cermet or ceramic top surface.</p><p>The results are that it is possible to manufacture coated steel plates having a better adhesive strength between the coating and the substrate as compared with an as-sprayed coating by selecting a coating thickness of 100–160 μm, a rolling reduction rate of below 3% and a heating temperature of 600°C in the case of WC-Co coating and 1100°C in the case of ZrO<sub>2</sub> coating respectively.</p></div>","PeriodicalId":100801,"journal":{"name":"Journal of Mechanical Working Technology","volume":"20 ","pages":"Pages 331-340"},"PeriodicalIF":0.0,"publicationDate":"1989-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-3804(89)90042-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91721957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Measurement of temperature distribution within tool in metal cutting. Experimental tests and numerical analysis 金属切削中刀具内温度分布的测量。实验测试和数值分析

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90016-8

S. Lo Casto, E. Lo Valvo, F. Micari

引用次数: 38

Flexible automated material handling system 灵活的自动化物料搬运系统

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90051-X

A. Kader Mazouz, Chingping Han

引用次数: 0

Machinability study of nickel-aluminide alloys 镍铝合金的可加工性研究

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90018-1

M.A. Elsayed , J.T. Scardina

引用次数: 1

Development and implementation of an intelligent flexible manufacturing system 智能柔性制造系统的开发与实现

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90047-8

R. Lim, Lim Beng Siong, Ho Nai Choon

引用次数: 10