Deep drawing characteristics of square cups through. The study of the mechanics of fluids or the laws of equilibrium and motion concerning fluids. Price new from used from hardcover, january 27, 1995 please retry. Theory, simulation and practice addresses all aspects of micromanufacturing technology, presenting detailed technical information and the latest research developments the book covers fundamentals, theory, simulation models, equipment and tools design, practical micromanufacturing procedures, and micromanufacturingrelated supporting systems, such as laser heating.
Deep drawing is a sheet metal forming process that involves complex material flow and force distributions. Apart from its use in many other sectors, it is applied in the automotive industry for the manufacturing of car body parts. Deep drawing tests were conducted to determine the process window maximum punch velocity as functions of blank size and temperature for al 5754o and mg az31o. Producing metallic bipolar plates for proton exchange membrane pem fuel cells by forming is still a topic of research. Hydromechanical deepdrawing of fuel tanks 2000010415 deepdrawing with hydraulic counter pressure presents numerous advantages compared to conventional deepdrawing.
Hydromechanical deepdrawing of aluminiumalloys at elevated. Investigation of hydrodynamic deep drawing for conicalcylindrical. If you attempt to see in the way prescribed by any mechanical system of drawing, old or new, you will lose the understanding of the fundamental impulse. Microhydromechanical deep drawing of metal cups with. Johnson cavity formation in rolling profiled rings international journal of mechanical sciences, vol. Deepdrawing operations are performed to produce a light weight, high strength, low density, and corrosion resistible product.
Manufacturing of metallic bipolar plate channels by rolling. In the hydromechanical deepdrawing process, the fluid pressure is used for postponing the fracture occurrence in the blank, while the thtb technique allows to create a material property gradient through a suitable artificial aging treatment carried out prior to the forming process. Under certain conditions, this sliding will cause friction between the tools and the material. Among them, hydromechanical deep drawing hdd is, probably, the process which has gained the major interest in industries in the. It is a language of communication between architects and engineers, usually to convey information about the object. Technical drawing is concerned mainly with using lines, circles, arcs etc. This is the only book on machine drawing, incorporating the. Khandeparkarm t, liewald m 2008 hydromechanical deep drawing of cups with stepped geometries.
Hydromechanical deep drawing is a capable process for producing complicated and taperedshaped stamping parts as well as parts which require excellent surface quality, i. Theory, simulation and practice addresses all aspects of micromanufacturing technology, presenting detailed technical information and the latest research developments the book covers fundamentals, theory, simulation models, equipment and tools design, practical micromanufacturing procedures, and micromanufacturingrelated supporting systems, such as laser. Limiting drawing ratioldr is the ratioofthe diameterofthe largestblankthat canbe successfully drawntothe diameterofthe punch. In this research, the effect of hydromechanical deep dra. Improving the hydromechanical deepdrawing process using. However, it is very important that the drawing produced to be accurate and clear.
This book on machine drawing is written, following the principles of drawing, as recommended by bureau of indian standards bis, in their standards titled engineering drawing practice for schools and colleges. In this study, the effect of this relative tooling feature size on drawing characteristics and effects to improve the drawability, such as friction holding effect, hydrodynamic lubrication effect and compression effect by blank. Another sheet metal drawing process which has particular merits for forming aluminium is the hydromechanical deep drawing process. Unit shall include removable baffle assembly and cross bar, deep seal trap covered by lid, sewer gas stopper, securing bolts, external vented flow control fitting, internal air relief bypass, feet underneath interceptor to elevate it to 12 off the ground, and steel powder. Deep drawing using a novel hydromechanical tooling. The effect of dieblank holder and punch radiuses on limit drawing. One of the largest applications of hydroforming is the automotive industry, which makes use of the complex shapes made possible by hydroforming to produce stronger, lighter, and more rigid unibody structures for.
On the scale dependence of micro hydromechanical deep drawing. Sheetmetal forming processes are widely used in the manufacturing industry. Hydromechanical deep drawing, geerts deep drawing and re. A new type of passivepressurized hydromechanical deepdrawing phdd tooling with two pistons is designed and manufactured. For the optimization of the drawing process, described previously, less elements with the element type 2 are used to save calculation time 5. Enhancing formability in hydromechanical deep drawing. These requirements will increase tendency of wrinkling and other failure defects in the product. Adaptive neuralnetwork based fuzzy logic inference system anfis is a useful method instead of costly finite element analysis fea in order to reduce investigation cost of forming processes. Hydromechanical deep drawing request pdf researchgate. Special considerations for deep drawing of aluminium sheet metal. The deep drawing process, as one of the most applicable sheet metal forming process, is widely used in many industries.
In this paper a numerical study of hdd of a can box is presented. As a textbook and reference work in one, it provides an indepth study of the major metal forming technologies. Hydromechanical deepdrawing technica chronica journal of the institution of greek engineers, vol. Microhydromechanical deep drawing of metal cups with hydraulic pressure effects. A novel process on friction aided deep drawing using tapered blank holder. Theoretical study on hydromechanical deep drawing process of bimetallic sheets and experimental observations article pdf available in journal of materials processing technology 2129. Pdf warm hydromechanical deep drawing whdd has increasingly been. Sheet hydroforming conical cup hydrodynamic deep drawing finite element simulation.
Deepdyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. An experimental study on nonisothermal deep drawing. Deepdrawing is one of the most important methods used to form sheet metal. Among them, hydromechanical deep drawing hdd is, probably, the process which has gained the major interest in industries in the last few years. Only the last simulations are done with the fine net and the fully integrated shell.
Theory and practice of deep drawing hardcover january 27, 1995 by v. Drawing tools nageswara rao posinasetti 1 february 6, 2012 2 february 6, 2012 sheet metal operations drawing is the process of making cups, shells, and similar articles from metal blanks. Data that has been imported, or calculated based upon imported. Hydromechanical deepdrawing of fuel tanks 2000010415 deep drawing with hydraulic counter pressure presents numerous advantages compared to conventional deep drawing. Stamping deep drawing fundamentals this course covers the fundamentals in sheet metal forming of steel, aluminum and highstrength steel, using practical examples from the automotive industry.
The deep drawing process is a forming process which occurs under a combination of tensile and compressive conditions. Read theoretical study on hydromechanical deep drawing process of bimetallic sheets and experimental observations, journal of materials processing technology on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at. Investigation of the effect of hydromechanical deep. A new type of passivepressurized hydromechanical deep drawing phdd tooling with two pistons is designed and manufactured. Warm hydromechanical deep drawing whdd has increasingly been implemented by automotive industry due to its various benefits including mass reduction opportunities in auto bodyinwhite components and improved formability for lightweight alloys. Ifu stuttgart alu training in aluminium application technologies hydromechanical deep drawing 3704. Pdf warm hydromechanical deep drawing of aa 5754o and. Teaching the most important fundamental laws governing deep drawing. Tooling feature size to minimum thickness becomes small in micro scale products and its ratio affects the deformation behavior in micro sheet forming significantly. So far, it has mainly been applied for small batches, but it offers substantial advantages regarding both costs and installation space compared to the established graphite based solutions. The drawing force is limited by the stress which the workpiece material can support at the point where the punch curvature ceases. Warm hydroforming modern manufacturing processes wiley. Theoretical study on hydromechanical deep drawing process. Specifically, if the depth of the item created is equal to or greater than its radius, then the.
Talat lecture 3704 deep drawing 15 pages, 16 figures advanced level prepared by k. This chinese edition of the metal forming handbook presents the fundamentals of metal forming processes and press design. Hydroforming is a costeffective way of shaping ductile metals such as aluminium, brass, low alloy steel, and stainless steel into lightweight, structurally stiff and strong pieces. Design for deep drawing sheet metal stamping engineers edge. Hydromechanical deepdrawing is a capable process for producing complicated and taperedshaped stamping parts as well as parts which require excellent surface quality, i. The metal forming handbook presents the fundamentals of metal forming processes and press design. Maximum punch velocities of 35 mms and 300 mms were obtained for the al and mg alloys, respectively.
Mhdd, a promising method to manufacture the micro metal cuplike products, is a budding micro sheet forming technology with enormous application potential. This book runs through all the main metal forming and shearing processes and the tooling and machines they involve. Deepdyve is the easiest way to get instant access to the academic journals you need. Deep drawing is one of the most widely used processes in sheet metal forming.
Request pdf hydromechanical deep drawing an experimental. Over the last decade, a variety of innovative methods have been developed that allow for manufacturing processes that are more versatile, less. Heated hydromechanical deep drawing of magnesium sheet. Written by qualified, practicallyoriented experts for practical implementation, supplemented by. Numerical simulation conducted by finite element method is one of the most powerful tools for analyzing metal forming processes. All that you need in the way of technique for drawing is bound up in the technique of seeing that is, of understanding, which after all is mainly dependent on feeling. Hydromechanical definition of hydromechanical by the. Incremental sheet forming was recently added in chapter 15. Pdf analysis of the hydromechanical deep drawing of. This chapter presents the simulation of micro hydromechanical deep drawing mhdd. Liang luo 1, zhengyi jiang 1, 3, dongbin wei 2, xiaogang wang 3, cunlong zhou 3, qingxue huang 3.
Zharkov author see all formats and editions hide other formats and editions. Analysis of the hydromechanical deep drawing of cylindrical cups. Pdf theoretical study on hydromechanical deep drawing. One new possibility for an efficient manufacturing process of these metallic bipolar. For engineers on the shop floor, this book is intended as an easilynavigable reference work. Deep drawing metal stamping manufacturing technology is defined as the stretching of sheet metal stock, commonly referred to as a blank, around a plug. The radius of dieblank holder and punch is important for. The deep drawing process involves a great deal of sliding of the sheet material along the tools. It is thus a shape transformation process with material retention. This paper will give an overview about the heated hydromechanical deep drawing process of magnesium sheet metal. Provides an indepth understanding of the fundamentals of a wide range of stateoftheart materials manufacturing processes modern manufacturing is at the core of industrial production from base materials to semifinished goods and final products.
The influence of geometrical features of a pressure. This paper presents a technology that combines the different effects used in hydromechanical and warm deep drawing to reduce the drawing force and to. A study on doe methods for hydromechanical deep drawing process parameters. Hydromechanical deep drawing of cups with stepped geometries.
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