Journal of Mechanical Working Technology最新文献_第10页

Machining performance of toughened zirconia ceramic and cold compact alumina ceramic in ultrasonic drilling 增韧氧化锆陶瓷和冷致密氧化铝陶瓷在超声钻孔中的加工性能

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90045-4

B. Ramu, R. Krishnamurthy, C. V. Gokularathnam

引用次数: 24

Simulation modeling of batch job shop type flexible manufacturing systems 批作业车间型柔性制造系统仿真建模

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90052-1

P. Mishra, P. Pandey

引用次数: 5

An adaptive approach to tool wear sensing and decay rate control in autonomous manufacturing 自主制造中刀具磨损感知与衰减率控制的自适应方法

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90013-2

Giampaolo D'Errico

引用次数: 6

Tool selection in machining by integration of a data base and a rule based system 将数据库与基于规则的系统集成到加工中的刀具选择

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90015-6

Hyuk-Soo Jang , Amit Bagchi

引用次数: 5

Modelling of the interaction of slabbing mills during the simultaneous rolling of slabs in both roll-pairs 两辊对同时轧制板坯过程中板坯轧机相互作用的建模

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90077-6

W. Dobrucki, R. Gregorczyk, S. Zawada

引用次数: 1

A retirement tribute 退休致敬

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI: 10.1016/0378-3804(89)90076-4

引用次数: 0

A note on the determination of the friction factor by means of the reduction-capacity test 关于用减容试验方法测定摩擦系数的说明

Journal of Mechanical Working Technology Pub Date : 1989-07-01 DOI: 10.1016/0378-3804(89)90009-0

S. Venugopal, G. Srinivasan, S. Venkadesan, V. Seetharaman

引用次数: 24

Physical modeling of the blocking process in open-die press forging 开式模压锻件成形过程的物理建模

Journal of Mechanical Working Technology Pub Date : 1989-07-01 DOI: 10.1016/0378-3804(89)90003-X

E. Erman, N.M. Medei, A.R. Roesch, D.C. Shah

{"title":"Physical modeling of the blocking process in open-die press forging","authors":"E. Erman, N.M. Medei, A.R. Roesch, D.C. Shah","doi":"10.1016/0378-3804(89)90003-X","DOIUrl":"10.1016/0378-3804(89)90003-X","url":null,"abstract":"<div><p>The purpose of blocking (reducing the ingot cross section) in open-die press forging is to maximize the internal deformation for better structural homogeneity and soundness of material in the core of the ingot. Forgings of high quality can be produced by specific control of the blocking parameters, e.g. die width, die configuration, die overlapping, die staggering, ingot shape, temperature gradient, draft design, pass design, etc. Physical modeling experiments, using plasticine as an easy-to-deform model material, have been conducted to study the effects of these blocking parameters on the deformation distribution in the forged ingots subjected to multiple-stroke blocking. To facilitate the multiple-stroke blocking study, new techniques had to be developed for better bonding between the layers of the plasticine specimens as well as for measuring the deformation strains in three dimensions from a single specimen. The evaluation of results shows substantial improvement in the internal-deformation distribution when the above-mentioned blocking parameters are optimized. This research work has resulted in providing better basic understanding of blocking parameters on centerline consolidation and product quality. Application of the laboratory modeling results to production forgings is reviewed also.</p></div>","PeriodicalId":100801,"journal":{"name":"Journal of Mechanical Working Technology","volume":"19 2","pages":"Pages 165-194"},"PeriodicalIF":0.0,"publicationDate":"1989-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-3804(89)90003-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74408224","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: 12

A study of cup-cup axisymmetric combined extrusion by the upper-bound approach II. Prediction of defects 杯杯轴对称组合挤压的上界方法研究[j]。缺陷预测

Journal of Mechanical Working Technology Pub Date : 1989-07-01 DOI: 10.1016/0378-3804(89)90001-6

Wu Shichun, Li Miaoquan

引用次数: 2

Springback and side-wall curl of galvanized and galvalume steel sheet 镀锌和镀锌钢板的回弹和侧壁卷曲

Journal of Mechanical Working Technology Pub Date : 1989-07-01 DOI: 10.1016/0378-3804(89)90006-5

Jang-Kyo Kim, P.F. Thomson

{"title":"Springback and side-wall curl of galvanized and galvalume steel sheet","authors":"Jang-Kyo Kim, P.F. Thomson","doi":"10.1016/0378-3804(89)90006-5","DOIUrl":"10.1016/0378-3804(89)90006-5","url":null,"abstract":"<div><p>The introduction of high tensile steel sheet to permit the use of thinner gauge in large pressings has increased the occurrence of the forms of elastic distortion known as springback and side-wall curl, and has increased, likewise, the need to control these by appropriate changes to the selection of process parameters when they lead to an unsightly product, or, more significantly, to a product in which loss of dimensional accuracy causes loss of function. They may also affect manufacture by making the stripping of the tooling more difficult. The use of thin sheet of high unit cost has increased the need for protection by zinc or aluminium/zinc (galvalume) coatings, and their effect on springback and side-wall curl under conditions appropriate to the pressing of large shallow panels is the subject of the present investigation. It is concluded that the resulting modification of friction does not significantly change the behaviour of steel sheet. Generally, any change in friction which increases the transverse stress gradient increases springback and side-wall curl.</p><p>It appears that differences in the reported effect of tool geometry on springback and side-wall curl can be attributed largely to differences in the rate of work hardening of the sheet tested.</p><p>It is confirmed that springback and side-wall curl increase with yield strength and work-hardening rate and with tool radius and tool clearance.</p></div>","PeriodicalId":100801,"journal":{"name":"Journal of Mechanical Working Technology","volume":"19 2","pages":"Pages 223-238"},"PeriodicalIF":0.0,"publicationDate":"1989-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-3804(89)90006-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86062487","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: 14