Dry Shearing of Micro-Alloyed Steels

2014 ◽  
Vol 622-623 ◽  
pp. 1058-1065
Author(s):  
Frank Steinbach ◽  
Alper Güner ◽  
A. Erman Tekkaya
Keyword(s):  
Sheet Metal ◽  
Metal Forming ◽  
Testing Machine ◽  
Testing Device ◽  
Tensile Testing Machine ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Cut Edge ◽  
Future Production ◽  
Small Device

In the production process of sheet metal parts, oil is widely used as lubricant, not only in sheet metal forming but also in shearing and blanking. Due to environment, health and cost reasons, the absence of lubricants is an aim for future production as it has initiated for machining in the last years. For lubricant-free shearing, it has to be known if there is an influence on the process itself when using oil or not. To find this out, experiments are carried out with a small testing device installed in a tensile testing machine and a blanking tool installed in a servo press. With the small device it is possible to make a piercing process with a circle punch of 16 mm diameter. The blanking tool produces a larger cut part with different holes and open cuts. Without lubricant, there is no difference in the maximum shearing force for the small device while the stripping force is higher and the cut edge zones differs slightly. Using oil or not has a small effect on the force using the blanking tool.

Distortion Analysis of Aluminum Alloy for Sheet Metal Forming after Solution Treatment

2007 ◽  
Vol 561-565 ◽  
pp. 893-896 ◽  
Author(s):  
Chau Chen Torng ◽  
Chi Kong Huang ◽  
Hsien Ming Chang
Keyword(s):  
Aluminum Alloy ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Solution Treatment ◽  
Value Added ◽  
Effect Analysis ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Distortion Analysis

The sheet metal parts play important role in aero structures. Due to the requirement of strength and constraint of weight in aircraft, the aluminum alloy is widely used in sheet metal forming parts. Most of sheet metal parts form the contour in O-condition, and then solution treat to improve the strength and mechanical property. The deformation of sheet metal parts usually takes place after the heating cycle and quenching into the water or solution. The straightening operation will apply to corrective the contour of parts. Thus, the non-value added operation would increase the production cost. By using statistical methodology to analysis deformation data of sheet metal parts, this study use Cause-Effect Analysis to find the relation between deformation and relative factors, such as material, thickness and contour. The results of this analysis can provide an efficient and economical approach for the designer, process planner, and technician in manufacturing the sheet metal parts.

scholarly journals Robustness - Practice Report: Make Forming Processes more Stable

2018 ◽  
Vol 918 ◽  
pp. 95-102
Author(s):  
Kai Kittner ◽  
Bernd Stimper
Keyword(s):  
Stochastic Simulation ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Industry 4.0 ◽  
Planning Process ◽  
High Quality ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Evolution Stage

In the last years, the development of sheet metal forming technologies shows many different tendencies such as materials or geometries. In the same duration the process planning for stamping processes keep still in the same way, although numerical algorithm and hardware improved continuously. That means, as components, processes and materials got more complex, the planning process still stays in the same technical evolution stage as years before. At present it is mostly a deterministic kind of planning. And in this way, potentials and possibilities still lie down. In the actual discussion around industry 4.0 new potentials around this topic seems to show new ways, but a lot of data and technologies are already available to improve production and forming processes. The task is to use this data. The key to improve the processes based on this data is the stochastic simulation, especially in the sheet metal forming industry [1,2]. The eberspaecher company as customer for sheet metal parts has an immense interest in high quality parts. High quality parts are an important step to reduce cost in the own following manufacturing. This paper deals with actions to integrate stochastic considerations into the planning process at eberspaecher. And its content should excite the discussion around robustness processes, stochastic simulation and in this way industry 4.0 as one base for future manufacturing.

Comparison of numerical simulation results of sheet metal parts’ production for AutoForm and TriboForm friction models

2020 ◽  
pp. 359-372
Author(s):  
M.A. Petrov
Keyword(s):  
Sheet Metal ◽  
Metal Forming ◽  
Coulomb Friction ◽  
Friction Model ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Friction Models ◽  
The Difference ◽  
Coulomb Friction Model

The results of numerical simulations with two friction models are studied. The fi rst model corresponded the Coulomb friction model and used in AutoForm on default. The second friction model took into account the quality of surface treatment, its roughness and amount of the lubricant and the effect of the asperities’ height evolution. It is used in TriboForm. The results obtained for the second friction model are used to simulate sheet metal forming processes in AutoForm. It is found that the TriboForm friction model affected the results of the drawing operation. The difference in the results increased due to bigger deformation values of the technological operation.

scholarly journals Electrohydraulic sheet metal forming with flexible tools

2018 ◽  
Vol 190 ◽  
pp. 12001 ◽  
Author(s):  
Holger Pegel ◽  
Lasse Langstädtler ◽  
Marius Herrmann ◽  
Christian Schenck ◽  
Bernd Kuhfuss
Keyword(s):  
Sheet Metal ◽  
High Precision ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Electrohydraulic Forming ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Cold Metal

In cold metal forming usually a die and a punch are required to form sheet metal in the desired shape. These two parts of the tool need to be produced of hardened materials in high precision. In this paper it is shown, that by using electrohydraulic forming the punch is replaced by a hydraulic punch and the die can be made easily out of softer materials that seem absolutely not suited at first sight. This allows for rapid and cheap manufacturing of sheet metal parts.

A Novel Particulate-Fluid Lubrication for Environmentally Benign Forming Processes

2005 ◽  
Author(s):  
M. Lovell ◽  
C. F. Higgs ◽  
A. J. Mobley
Keyword(s):  
Boric Acid ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Canola Oil ◽  
Environmentally Friendly ◽  
Environmentally Benign ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Oil Formulation

Forming sheet metal parts in the absence of lubricants is not practical in production operations. In practice, large amounts of liquid and grease lubricants are utilized in sheet forming to ensure that there is sufficient lubrication to reduce asperity interaction and increase formability. In the present investigation, an alternative environmentally friendly lubricant is introduced for sheet metal forming processes. This lubricant is based on a combination of boric acid and canola oil, both of which are natural, environmentally friendly, and have independently demonstrated good lubrication potential. Utilizing a specialized sheet metal stretching apparatus, an optimized boric acid and canola oil formulation was evaluated for use in metal forming operations. Based on the experimental results, the optimized lubricant shows substantial potential for providing the manufacturing community with a commercially viable and environmentally friendly lubricant that will eliminate expensive disposal costs.

Experimental and Numerical Analysis of Blanking for Thin Sheet Metal Parts

2001 ◽  
Vol 4 (3-4) ◽  
pp. 319-333
Author(s):  
Vincent Lemiale ◽  
Philippe Picart ◽  
Sébastien Meunier
Keyword(s):  
Numerical Analysis ◽  
Sheet Metal ◽  
Thin Sheet ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Thin Sheet Metal
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