Hydrogeformte Strömungsprofile aus Stahlblech/Hydroforming of airfoils using bent steel sheets - Product design and technological-economical selection of sheet metal forming processes in practice

2015 ◽  
Vol 105 (10) ◽  
pp. 744-746
Author(s):  
D. Landgrebe ◽  
M. Pröhl
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Cost Effective ◽  
High Accuracy ◽  
Process Chain ◽  
Steel Sheets ◽  
Geometrical Complexity ◽  
Small Wind Turbines ◽  
Selection Of

Innerhalb des Projekts „HyBlade“ wurde ein Flügelprofil aus Stahlblech entwickelt. Zum Einsatz kommen bewährte Fertigungstechniken wie das Abkanten einer Vorform und das Hydroforming zum Kalibrieren der finalen Geometrie. Das Verfahren stellt eine hohe Maßhaltigkeit sicher – die wesentliche Voraussetzung für gute Aerodynamik und hohe Energieausbeute von Windkraftanlagen. Die wirtschaftliche Prozesskette gestattet darüber hinaus auch die Herstellung größerer Blätter mit weitaus komplexeren Geometrien.   In the HyBlade project, a sheet metal based airfoil used for blades of small wind turbines has been developed. Well known forming techniques have been used to produce a bent preform that is finally calibrated via hydrofoming. This manufacturing technology ensures a high accuracy of the blade, resulting in good aerodynamic conditions and energy efficiency. The very cost-effective process chain furthermore offers the possibility to form even larger blades with a higher geometrical complexity.

scholarly journals Influence Of Lubricants On Wear Resistance Of Aluminum Alloy Strips Series 2XXX

2015 ◽  
Vol 60 (3) ◽  
pp. 1833-1838
Author(s):  
K. Żaba ◽  
P. Kita ◽  
M. Nowosielski ◽  
M. Kwiatkowski ◽  
M. Madej
Keyword(s):  
Wear Resistance ◽  
Aluminum Alloy ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
2024 Aluminum Alloy ◽  
Aluminum Alloy 2024 ◽  
Materials Used ◽  
Oil Company ◽  
Selection Of

Abstract The article presents a properly planned and designed tests of the abrasive wear resistance 2024 aluminum alloy strips under friction conditions involving various lubricants. Test were focused on the selection of the best lubricant for use in industrial environment, especially for sheet metal forming. Three lubricants of the Orlen Oil Company and one used in the sheet metal forming industry, were selected for tests. Tests without the use of lubricant were performed for a comparison. The tester T-05 was used for testing resistance to wear. As the counter samples were used tool steel - NC6 and steel for hot working - WCL, which are typical materials used for tools for pressing. The results are presented in the form of the force friction, abrasion depth, weight loss and coefficient of friction depending on the lubricant used and the type of counter samples. The results allowed for predicting set lubricant-material for tools which can be applied to sheet metal made of aluminum alloy 2024.

scholarly journals Analysis of Material Transfer From a Soft Workpiece to a Hard Tool: Part II—Experimental Verification of the Proposed Lump Growth Model

2000 ◽  
Vol 123 (3) ◽  
pp. 474-478 ◽  
Author(s):  
M. B. de Rooij ◽  
D. J. Schipper
Keyword(s):  
Sheet Metal ◽  
Growth Model ◽  
Experimental Verification ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Material Transfer ◽  
Selection Of ◽  
Good Agreement

In this study, the lump growth model, described in an accompanying paper (de Rooij and Schipper, 2000) is validated by means of experiments performed on a deepdrawing simulator. In the experiments, the influence of material and roughness properties of both sheet and tool on the galling behavior is determined. For these experiments, a deepdrawing simulator and a selection of aluminum and zinc coated sheets with several (coated) deepdrawing tools are used. Good agreement is found between results of the lump growth model and the sheet metal forming experiments.

Experimental Study on Surface Damage in Forming of Galvanized Steel Sheets

2011 ◽  
Vol 221 ◽  
pp. 674-678
Author(s):  
Ying Ke Hou
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Surface Damage ◽  
Galvanized Steel ◽  
Damage Behavior ◽  
Steel Sheets ◽  
Galvanized Steels ◽  
Surface Topographies ◽  
Surface Damages

U-channel forming tests were performed to investigate the surface damage behavior of hot-dip galvanized (GI), galvannealed (GA) and electrogalvanized (EG) steels in sheet metal forming (SMF). Experimental results indicate that the surface topographies of galvanized steels are roughening with the number of forming in sheet metal forming (SMF) and the types and mechanisms of surface damages of the three coatings are different. And tool hardness has great effects on surface damages of the GI and GA steels while the influence of tool hardness on surface damage of EG steel is negligible.

Robot-Based Incremental Sheet Metal Forming – Increasing the Part Accuracy in an Automated, Industrial Forming Cell

2009 ◽  
Vol 410-411 ◽  
pp. 159-166 ◽  
Author(s):  
Horst Meier ◽  
B. Buff ◽  
V. Smukala
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Tool Path ◽  
Cost Effective ◽  
Programming System ◽  
Forming Process ◽  
Incremental Sheet Metal Forming ◽  
Metal Forming Process ◽  
Formed Part

This paper describes new developments in incremental, robot-based sheet metal forming (Roboforming). Roboforming is a dieless sheet metal forming process which ensures cost-effective manufacturing of prototype parts and small batches. An approach for increasing the part accuracy in Roboforming is presented. It is developed in a cooperative project funded by the German Federal Ministry of Education and Research called Roboforming. The project concentrates on the development of an industrial applicable system design. The use of standard components allows a modular and scalable set-up. A servo loop, consisting of sensors and a programming system, represents the basis of this design and shall guarantee higher part accuracies by measuring the deviations between a formed part and its target geometry. The deviations are used to derive corrected tool paths. The correction is performed by an adjustment vector for every point on the tool path. The theory for this strategy and first results are presented in this paper.

Robot-Based Incremental Sheet Metal Forming – Increasing the Geometrical Complexity and Accuracy

2013 ◽  
Vol 549 ◽  
pp. 149-155 ◽  
Author(s):  
Bolko Buff ◽  
Christian Magnus ◽  
Jun Hong Zhu ◽  
Horst Meier
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Forming Process ◽  
German Research Foundation ◽  
Geometrical Accuracy ◽  
Geometrical Complexity ◽  
Incremental Sheet Metal Forming ◽  
Metal Forming Process ◽  
Formed Part

The industrial application of incremental sheet metal forming is still limited by certain constraints, e.g. low geometrical accuracy and geometrical complexity. In order to overcome these constraints, this paper presents two approaches which have been carried out within the research project Development of a robot-based dieless incremental sheet metal forming process funded by the German Research Foundation (DFG). The first approach increases the geometrical accuracy by adding an addendum stabilization surface. As neither a partial nor a full die is used in this universal concept, there is a larger influence of the free compliant sheet area surrounding the formed part of the geometry. Thus the sheet shifts away from the forming tool more easily, which often results in a less accurate forming. The addendum stabilization surface reinforces this free sheet area. Experiments have proven this to be as good as a partial die. Especially the subsequent deformation resulting from the interaction of differently shaped elements causes geometrical deviations which are limiting the scope of formable parts. The second approach is based on the subsequent forming of elements belonging to the original geometry, which helps to increase the geometrical accuracy as well as the geometrical complexity. Thus the basic geometry is formed in a first step. Afterwards, further elements are formed subsequently, while the adjacent areas are supported by a peripheral supporting tool which prevents their deformation.

Effect of Aluminium Alloy and Mild Steel on the Productivity in Sheet Metal Forming Processes

2012 ◽  
Vol 234 ◽  
pp. 64-68 ◽  
Author(s):  
C.N. Ashok Kumar ◽  
R. Deivanathan
Keyword(s):  
Mild Steel ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Material Handling ◽  
Operation Time ◽  
Handling Time ◽  
Machine Method ◽  
Major Factors ◽  
Selection Of

Productivity is one of the major factors that affect the profit of any industry or any product. In manufacturing industries, the productivity is showing the efficiency of the production unit. It depends on many factors such as technology, machine, method, management, materials etc. In this study, material used is considered and analyzed how it affects the productivity. Productivity is normally expressed as the number of units produced / unit time. Sheet metal forming is one of the major manufacturing processes and used for most of the products. So the selection of material is important for good quality as well as economical production. This article discusses how the material influences the productivity. For this study, a product U Clamp is considered. The materials considered for the study are the aluminum and mild steel. The U clamps are formed by aluminum as well as mild steel by using the same die. Data on operation time, material handling time are collected, analyzed and discussed.

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