Forming the Future最新文献

Effect of Machining Induced Microstructure Changes on the Edge Formability of Titanium Alloys at Room Temperature 加工诱导组织变化对钛合金室温边缘成形性的影响

Forming the Future Pub Date : 2021-07-11 DOI: 10.1007/978-3-030-75381-8_223

J. Kwame, E. Yakushina, P. Blackwell

引用次数: 0

Instability Analysis in Incremental Rotary Forming of Tube Flanges 管法兰增量回转成形的不稳定性分析

Forming the Future Pub Date : 2021-07-11 DOI: 10.1007/978-3-030-75381-8_34

B. Krishnamurthy, O. Bylya, Kyle Watt, A. Conway, M. Tuffs, P. Blackwell

引用次数: 0

Numerical Modelling and Deformation Mechanics of the English Wheel Process 英国车轮加工的数值模拟与变形力学

Forming the Future Pub Date : 2021-07-11 DOI: 10.1007/978-3-030-75381-8_38

Daniel T. Bowen, O. Music, A. Erdinç, A. Shokrani, E. Loukaides

引用次数: 2

In Search of the Perfect Sheet Metal Forming Tribometer 寻找完美的板料成形摩擦计

Forming the Future Pub Date : 2021-07-01 DOI: 10.1007/978-3-030-75381-8_7

L. Schell, P. Groche

引用次数: 2

Formation of Residual Stresses in Austenitic Stainless Steels by Infeed and Recess Rotary Swaging 奥氏体不锈钢进给和凹槽旋转挤压残余应力的形成

Forming the Future Pub Date : 2020-10-14 DOI: 10.31224/osf.io/6uks7

H. Hoche, F. Jaeger, A. Franceschi, M. Oechsner, P. Groche

{"title":"Formation of Residual Stresses in Austenitic Stainless Steels by Infeed and Recess Rotary Swaging","authors":"H. Hoche, F. Jaeger, A. Franceschi, M. Oechsner, P. Groche","doi":"10.31224/osf.io/6uks7","DOIUrl":"https://doi.org/10.31224/osf.io/6uks7","url":null,"abstract":"The austenitic stainless steels 1.4307 and 1.4404 significantly benefit from cold forming, due to their high work hardening capability. Great potential to improve the component's fatigue properties is expected by optimizing the forming process chain such that specific residual stresses are induced in critical component areas. In this work, an analysis of the formation of residual stresses during rotary swaging is carried out. Through this incremental forming process, high strain hardening and a complex material flow history are induced in the workpieces. Therefore, measuring strategies for the residual stress measurement of cold de-formed austenitic steels by X-Ray diffraction, using the sin2Ψ-method, were developed. Here, especially the 1.4307 is a challenging material due to cold forming induced martensite formation. Despite phase changes, both cold formed materials exhibit anisotropic microstructures as well as coarse grained areas. Moreover, particular notched geometries are produced on the workpieces by rotary swaging. The measuring techniques are further developed for these complex geometries and the residual stresses are investigated.","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"52 Pt 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128939850","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: 5

Influence of Material Delivery Condition on Residual Stresses and Part Properties During Forward Rod Extrusion 材料输送条件对棒材正挤压过程中残余应力和零件性能的影响

Forming the Future Pub Date : 2020-09-24 DOI: 10.31224/osf.io/9wuzm

A. Jobst

{"title":"Influence of Material Delivery Condition on Residual Stresses and Part Properties During Forward Rod Extrusion","authors":"A. Jobst","doi":"10.31224/osf.io/9wuzm","DOIUrl":"https://doi.org/10.31224/osf.io/9wuzm","url":null,"abstract":"During the manufacturing of semi-finished products, the material is subjected to various forming steps to achieve the final geometry. In order to reduce the work hardening introduced and to ensure a good formability, it is annealed before component manufacturing. Forming technologies like forward rod extrusion are well-established methods for an efficient production of resilient components. In this process however, an inhomogeneous pre-strengthening of the material influences the stress distribution during forming and therefore the mechanical properties and the residual stresses in the component. Since they affect the parts operating behaviour, knowledge of the influence of the delivery condition of the material is necessary. The aim in this paper is to derive dependencies between material properties and the resulting residual stresses and work hardening in the component. Due to the increasing application, ferritic stainless steel X6Cr17 in the skin passed (+LC) and soft annealed (+A) states is used. Residual stresses, microstructure and microhardness distribution of both material states are compared regarding the rods and extruded parts. The effects of the delivery condition are evaluated by comparing process and component properties.","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126406422","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

Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel 无取向电工钢圆柱和球形压纹磁阻分析

Forming the Future Pub Date : 2020-07-30 DOI: 10.31224/osf.io/jr3tx

Ines Gilch, S. Vogt, T. Neuwirth, B. Schauerte, K. Hameyer, M. Schulz, A. Gustschin, W. Volk, H. A. Weiss

{"title":"Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel","authors":"Ines Gilch, S. Vogt, T. Neuwirth, B. Schauerte, K. Hameyer, M. Schulz, A. Gustschin, W. Volk, H. A. Weiss","doi":"10.31224/osf.io/jr3tx","DOIUrl":"https://doi.org/10.31224/osf.io/jr3tx","url":null,"abstract":"In reluctance and permanent magnet synchronous machines, flux barriers are crucial for magnetic flux guidance. Designed as cutouts, flux barriers reduce the mechanical strength of the rotor construction. To operate these electric drives at higher rotational speed, an alternative flux barrier design is required. Since residual stress influences the magnetic properties of soft magnetic materials, this paper deals with embossing induced residual stress as flux barriers in non-oriented electrical steel with 2.4 wt% silicon and a sheet thickness of 0.35 mm. The investigated flux barriers were fabricated with a cylindrical or spherical punch at two different penetration depths and were compared to a flux barrier fabricated as cutout. A residual stress analysis using Finite Element Analysis helps understanding the mechanism of embossed flux barriers. Additionally, the influence of induced residual stress on the magnetic material behavior is measured using standardized single sheet tests and neutron grating interferometry measurements. This investigation aimed at a better understanding of the flux barrier design by local induction of residual stress.","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129288879","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: 2

New Methods for Fracture Detection of Automotive Steels 汽车用钢断裂检测新方法

Forming the Future Pub Date : 1900-01-01 DOI: 10.1007/978-3-030-75381-8_55

J. Noder, P. Samadian, J. Dykeman, A. Abedini, A. Zhumagulov, M. Worswick, C. Butcher

引用次数: 0

Robust Hydroforming Technologies to Enhance the Formability of Sheet and Tube 提高板材和管材成形性能的鲁棒液压成形技术

Forming the Future Pub Date : 1900-01-01 DOI: 10.1007/978-3-030-75381-8_30

Shi-Hong Zhang, Da-yong Chen, Yong Xu, Yannan Ma

引用次数: 0

Finite Element Method Based on Space Mesh 基于空间网格的有限元方法

Forming the Future Pub Date : 1900-01-01 DOI: 10.1007/978-3-030-75381-8_244

Gang Yang, Atsushi Kinoshita

引用次数: 0