Deep drawing manufacturing process deep drawing of sheet. This paper deals with the deep drawing of metal cups using the marform process. A new friction model based on local contact conditions is presented. Using this technique, higher limiting drawing ratios can be obtained compared with the conventional deep drawing process. A number of defects can occur in a sheet metal drawn product. Sometimes, these metal blanks will be placed on a reel to enable the metal to form efficiently. Though similar to metal stamping, deep drawn metal products are deeper than metal stamping can accommodate.
A deep draw process may have one or more drawing operations, depending on the complexity of the part. It is thus a shape transformation process with material retention. Journal of engineering sciences, assiut university, faculty of engineering, vol. Versatile and effective, deep draw stamping is a particularly effective metal forming method for parts with high depth measurements and large annual order volumes. In this paper, a finite element fe model is developed for the 3d numerical simulation of deep drawing process parametric analysis by using abaqusexplicit fea program with the proper material. Pots and pans for cooking, containers, sinks, automobile parts, such as panels and gas tanks, are among a few of the items manufactured by sheet metal deep drawing. Simulation of aluminium sheet metal deep drawing at. The deep drawing process is one of our specialties, and is one of the main reasons we are able to create such highprecision parts that are as accurate as possible. Apr 15, 2017 sheet metal drawing is a more complex operation than cutting or bending operation, and more things can go wrong during sheet metal drawing. The uses and benefits of deep drawn metals hudson technologies.
In deep drawing the depth of the part being made is more than half its diameter. Following is a list of common defects during sheet metal operation, with sketches are shown in figure 1. What is the difference between deep drawing and wire drawing. If the depth of the item is equal or greater than its radius, the metal forming process is called deep drawing.
Design for deep drawing sheet metal stamping engineers edge. At hudson technologies, we can produce highquality deep drawn parts from a range of different metals. Deep drawing is one of the commonly used sheet metal forming process used in industries for cup shaped parts produced at high rate. A variety of metals can be deep drawn, including aluminum, stainless steel, aluminized steel, cold rolled. This paper intends to approach the deep drawing process of thin walled, mild steel, cylindrical containers, by means of a finite element analysis. Rao, manufacturing technology, tata mcgraw hill, 1998. Deep drawing can achieve up to 43% reduction on a metal blank, and multiple successive deep draws can be used to achieve part size or shape requirements. Deep drawing is used for making automotive fuel tanks, kitchen sinks, twopiece aluminum cans, etc.
Finite element model figure 1 shows a sketch for drawing a circular cup. This mode of deformation is found mostly on smooth bottoms of shallow parts and in hydroforming processes. Blankingblanking is the process ofcutting the initial sheet coil stockinto round or shaped flatsrequired for deep drawing. If you have any questions or good suggestions on our products and site, or if you want to know more information about our products, please write them and send to us, we will contact you within one business day. Deep drawing process of steelbrass laminated sheets. Deep drawing is affected by many factors such as material properties, tool geometry, lubrication etc. Sheet metal drawing is a more complex operation than cutting or bending operation, and more things can go wrong during sheet metal drawing. What is the difference between deep drawing and wire. This mode is typical the material flow from the flange towards the.
Analysis of deep drawing of sheet metal using the marform process. The deep drawing process unparalleled manufacturing. As the metal is drawn pulled, it stretches thinner, into a desired shape and thickness. This process is considered more efficient than machining because there is significantly less wastage of metal.
Toledo metal spinning is a supplier that provides robust metal forming and joining solutions. Drawing is a metalworking process which uses tensile forces to stretch metal or glass. Deep draw metals and materials hudson technologies. A wide range of metals can be used in the deep draw process. Though deep drawing is similar to metal stamping, the terms are not interchangeable. Prediction of the forming results, determination of the thickness distribution and the thinning of the sheet metal blank will decrease the production cost through saving material and production time. Due to the symmetry, the numerical analysis of the deepdrawing process was performed by using only one quarter of 3d numerical model to reduce the computational time. Analysis of deep drawing of sheet metal using the marform. Cutting and forming thin sheets of metal usually performed as cold working sheet metal 0. In sheet metal forming practice, we distinguish five basic modes of deformation. Deep draw process for precision metal components trans.
Simulation of aluminium sheet metal deep drawing at elevated. The edges of the metal blank are restrained yet allowed to slide between two rings. Request pdf thinning and residual stresses of sheet metal in the deep drawing process a b s t r a c t this paper presents a finite element fe model developed for the 3d numerical simulation. A part is said to be deepdrawn if the depth of the part is at least half of its diameter. 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 following are key elements affecting metal flow during deep drawing process and each of them should be considered when designing or troubleshooting sheet metal deep drawing stamping tools. Deep drawing metal deep drawing services toledo metal. Thinning and residual stresses of sheet metal in the deep. In deep drawing process, thicker materials are stiffer, they can be gripped better during deep drawing. Metal spinning services deep drawing services toledo. Apart from its use in many other sectors, it is applied in the automotive industry for the manufacturing of car body parts.
This process is considered more efficient than machining because more than its diameter or width. Deep drawing metal parts fabrication american aluminum. Metal casting metal forming metal rolling metal forging metal extrusion metal drawing powder processes ironing of sheet metal ironing of sheet metal is a manufacturing process that is mostly used to achieve a uniform wall thickness in deep drawings. Jun 01, 20 deep drawing stationtypes blanking drawing piercing trimming 8. The deep drawing process, as one of the most applicable sheet metal forming process, is widely used in many industries. A variety of metals can be deep drawn, including aluminum, stainless steel, aluminized steel, cold rolled steel, brass, bronze, cupro nickel, nickel, and titanium. The deep drawing process is a forming process which occurs under a combination of tensile and compressive conditions. Deep drawing is one of the most widely used processes in sheet metal forming. Determine scope transmatic produces deep drawn parts up to 12 long 200mm, using materials from 0. Deep drawing is a manufacturing process that is used extensively in the forming of sheet metal into cup or box like structures. In order to obtain fixed tolerances for the formed parts it is highly recommended to use such process parameterstool geometry that allow a considerably diminishing of the spring back amount.
Variation in wall thickness often exists in parts produced by deep drawing, as discussed in the. The analytical model of the process is presented initially, followed by the finite element simulations using abaqus software. It is used widely for mass production of hollow shapes in the packing industry, automotive industry etc according to the definition in din 8584, deep drawing is the. Metal drawing metal drawing is a manufacturing process that forms metal work stock by reducing its cross section. One of the primary defects that occurs in deep drawing operations is the wrinkling of sheet metal material, generally in the wall or flange of the part.
Though similar to metal stamping, deep drawn metal products. Cutting blanks every deep draw stamping starts as a flat disc of sheet metal, blanked from coiled stock. Due to the symmetry, the numerical analysis of the deep drawing process was performed by using only one quarter of 3d numerical model to reduce the computational time. Similar to other sheet metal forming processes, the dominant strain in this process is usually tensile. 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.
Deep drawing is a sheet metal forming process in which a sheet metal blank is radially drawn into a. This process is very similar to metal extrusion, the difference being in the application of force. Pots and pans for cooking, containers, sinks, automobile parts, such as panels and gas tanks, are among. Deep drawing manufacturing process deep drawing of. All of our processes are supported by secondary processes in order to build parts to customer specifications, and for our own product lines. A cup deep drawing example from literature is used for the validation of the simulation methods available in lsdyna. A new friction model based on local contact conditions is. When the depth of the drawn part is more than that of the parts diameter, its then considere. Jul 22, 2011 this paper deals with the deep drawing of metal cups using the marform process. Hussein 2,b 1 beni suef university, production technology department, faculty of industrial education. The process is considered deep drawing when the depth of the drawn part exceeds its diameter.