Principles of forging design forging your article library. About drop forging and upset forging green bay drop forge. Forgings significance, design, production, application. We are able to manufacture complex geometric components rapidly. Pdf the load required in forging are a function of size, shape, frictional characteristics and deformation resistance of a metal. Numerical design of a new forging press drive incorporating non. There are different types of forging processes, today our discussing topic is drop forging design. One way to achieve this is through the process called flood welding, a highspeed, highdeposition weldmetal recovery of a. Drop forging design is the first step for starting a new part, and such design will follow the application and assembling of products. Study of void closure in hot radial forging process using. Opendie forging is the term applied to all forging operations, in which there is no lateral.
Song heavy industry underscore ole georg music global. The main products of the tube forging process are large caliber gun barrels, automotive axles, oil field equipment, and other tubular components 1, 2. By means of three case studies, it is shown that the knowledge of the dominant damage mechanism is the key to finding out proper countermeasures or repair technologies. A method of making a forging in closeddies, said forging having a main body, a spindle projecting from said main body and a plurality of projections projecting from said main body, said main body having an annular flat surface portion around said spindle and a corner portion at an outer periphery of said annular flat surface portion, said. A fuller tool marks the starting step locations on the fully rounded workpiece. The solution creates the stock material or casting and the nc programming. The application of computei aided design and computer aided manufacturing.
This article will help you to make comparison between press forging and drop forging. Rib and web type forgings have been of significant importance and have been the most difficult to forge because they require several design considerations. Starting stock cut to size by weight is first rounded, then upset to achieve structural integrity and directional grain flow. In the rough forging process, a rough forged product is shaped so as to have an annular flat surface portion smaller in outer diameter than the first mentioned annular. Drop forging design considerations for the advantages of drop forging, it is always used to make metal parts. A geometric approach is presented to evaluate the shape complexity factor. Determination of parting line and axis of products for drop forging manufacturing. In press forging, the metal is shaped by means of a single, continuous stroke. Taylan altan, professor and director, erc for net shape manufacturing, the ohio state university. Study of void closure in hot radial forging process using 3d. Forging manufacturing services design for forgings. Employed usually in manufacturing axles, crankshafts, gears, and tools.
Comparison of press forging and drop forging forging. The finite element model was built parametrically using ansys. In opendie forging, a hammer strikes and deforms the workpiece, which is placed on a. To increase the force of the blow, power is sometimes applied to augment gravity. Bhattacharya 3 1department of mechanical engineering, kalyani government engineering college. During the hot radial forging process, workpiece is. The tool life quantity is generally limited by wear, or by cracking in the case of complicated impressions. Manufacturers use the drop forging process to produce hardware products. The manual application of empirical approaches to forging processes is costly. In june 2009 they casted and forged ingot of 580 t. Cadcam technique to forming is gaining populanty as the. Before drop forging production, the engineering design team will first finalise the geometry, dimension, tolerance and material requirement normally used material is drop forged steel for the desired component.
Us4967584a method of making a forging in closeddies. Drop forging, process of shaping metal and increasing its strength. Apply to product engineer, manufacturing engineer, senior design engineer and more. Agency for advertising and design, film, audio and new media, st. Following are some recommended forging design principles. Mayur deshpande, research associateand adam groseclose, graduate research associateand dr. Design for forging manufacturing considerations engineers edge.
The forging conditions and the characteristic tool damage vary from part to part, which makes a life time prediction very difficult. It is an art that has developed over thousands of years. Impressiondie forging is also called closeddie forging. Taylan altan, professor and director, and mayur deshpande erc for net shape forming, the ohio state university. Study of void closure in hot radial forging process using 3d nonlinear finite element analysis j. A closeddie forging having an annular flat surface portion and a corner portion at an outer periphery of the annular flat surface portion is made by a method consisting of a rough forging process and a finish forging process. However, like cast parts, important features can be finishmachined after the forging is complete to meet higher tolerance feature requirements. Forging overview forging is a method of shaping metals and alloys into parts of useful shapes. The manufacturer lists can be downloaded free of charge pdf data on the internet. It has good examples of forging designs, and has all the tables for calculating draft, radii, and such for the.
Design algorithms for rib and web forging formulated based on several practical data. It can also cause forging defects on the final products which are. The pressure applied is slow, steady and continuous in a single squeezing action in press forging. The object of developing the part design and process plan. Posted on november 17, 2017 november 17, 2017 steelforging posted in steel forging. For steel opendie forgings, special tolerances apply. Forging is the process in which metal, cold or heated, is shaped into a component geometry through the use of multiple blows with a drop hammer or through the application of pressure with a hydraulic press. Forging is a manufacturing process involving the shaping of metal using localized compressive. Because of its long history, many of the terms used reflect ancient practices, and some of them have lost their original meaning.
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