24-03-2012, 01:17 PM
dear sir i want hydroforming ppt to present in my seminar.. so kindly send to"vkgovindu[at]gmail.com".
24-03-2012, 01:17 PM
dear sir i want hydroforming ppt to present in my seminar.. so kindly send to"vkgovindu[at]gmail.com".
22-08-2012, 04:48 PM
HYDRO FORMING 1HYDRO FORMING.doc (Size: 872 KB / Downloads: 51) TAKING ADVANTAGE OF HYDRO FORMING When considering hydro forming, companies need to ask whether this technology will make a part cheaper to produce. The real question is whether you can refine the entire manufacturing process to take advantage of hydro forming that is when it really makes. Instead of looking at a single competent to determine whether it can be hydro formed , companies need to look at a product through whole process, from material to assembly , to determine what savings can be achieved . For e.g. Hydro forming often reduces number of pieces or the amount of floor space used or eliminates the need for welding stations. Tube Hydro forming Straight, pre bent and or performed tubes are formed by internal water pressure with additional application of compressive mechanical forces. In this method the tube in placed in die and as press clamps the die valves, low pressure fluid in introduced into tube to pre form it. One the maximum clamping pressure in achieved, the fluid pressure inside the tube in increased so that tube bulges to take internal shape of the die. Simultaneously additional cylinders axially compress the tube to prevent thinning and brushing swing expansion. SHEET HYDRO FORMING Sheet hydro forming involves forming of sheet with application of fluid pressure. A sheet metal blank informed by hydraulic counter pressure generated by punch drawing sheet into pressurized water chambers. The water pressure effectively punches the sheet firmly against punch to form required shape. The major advantage of fluid forming is increased drawing ratio. The process tale place in two stages performed during one press stroke. The sheet in performed by applying low fluid pressure while it is in clamped firmly by a blank holder pressure. Performing achieves on evenly distributed strengthening in the component center. In next step fluid pressure in gradually increased and blank holder pressure in controlled relative to sheet reformation. HYDRO FORMING PROCESS CONTROL A typical hydro forming system would include a press capable of developing necessary forces to clamp the die valves together when internal pressure acts on fluid; a high pressure water system to intensify water pressure for forming component, looking including aerial cylinder and punches, depending on component and a control system for process monitoring. Since the entire process of operation takes place inside a closed die, one cannot see what actually happens during forming. Therefore the controller plays a vital role in displaying, monitoring and controlling the different parameters of forming in real time. CONCLUSION During the last 12 years, general awareness of hydro forming has grown steadily . Although interest in hydroforming is wide ranging , the vast majority of application are in automobile industry . Hydro Forming is not panacea for manufacturing all automotive parts. The benefits of automotive light weight resin and weight reduction achieved by hydroforming can be measured in kilogram. It cannot be applied to every components, one has to study inability of hydro forming the part and the economic and technical payback. Just like transistor revolutionized the electronic industry, hydro forming has taken the vehicle manufacturing industry a step up to evolutionary ladder, allowing auto component for vehicle. Although hydro forming has not taken off rapidly as it should have, is only matter on time before this technology is absorbed in the industry. |
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