C. Jai Shiva Rao, K. Prasanna Lakshmi, M. Venkata Ramana
et al.
One of the important metal forming techniques employed in forming processes of sheet metal is deep drawing. This method allows to production of intricate shapes with fewer flaws. The quality of the deep-drawn product depends on the extent of control, exercised by the manufacturer, on process parameters of deep drawing. An effective end product with the least possible flaws can be manufactured using a deep drawing process by effectively controlling the process parameters. This article brings out a consolidated report of the research findings, as reported by researchers across the globe, on recent developments of deep drawing methods with emphasis on the quality of deep drawn products. These methods include hydromechanical deep drawing, micro deep drawing, and deep drawing operation using magnet-rheological medium. This paper also presents challenges and scope of future research leading to commercial implementation of recently developed techniques of deep drawing.
Widyastuti, Rochman Rochiem, Dian Mughni Fellicia
et al.
Deep drawing has become the most general method in cartridge manufacturing process which use brass alloy as the main component. To perform deep drawing on this type of alloy, there are several physical and mechanical properties re-quired, especially the ductility and hardness. In this paper, the CuZn35 brass alloy, which still does not fulfill the requirements, had been annealed in the several annealing parameters (holding time and annealing temperature) to achieve the re-quired properties. It also discussed the microstructure evolution in every annealing parameter and the affiliation to its mechanical properties. The temperature annealing process of CuZn35 brass alloy was conducted in 300, 400, 500, and 600°C for 60 minutes. Then, the heat-treated product will be observed to get the composition, microstructure, hardness, strength, and also deep drawing formability. The-ꞵ precipitation was successfully eliminated by annealing process which significantly decrease its hardness and tensile strength whereas the increased grain size affect the ductility.
The increasing demands of 3D game realism - in terms of both scene complexity and speed of animation - are placing excessive strain on the current low-level, computationally expensive graphics drawing operations. Despite these routines being highly optimized, specialized, and often being implemented in assembly language or even in hardware, the ever-increasing number of drawing requests for a single frame of animation causes even these systems to become overloaded, degrading the overall performance. To offset these demands and dramatically reduce the load on the graphics subsystem, we present a system that quickly and efficiently finds a large portion of the game world that is not visible to the viewer for each frame of animation, and simply prevents it from being sent to the graphics system. We build this searching mechanism for unseen parts from common and easily implemented graphics algorithms.
A methodology for designing of obtaining process of conical hollow parts by combining the operations of crimping, expansion, drawing and flanging in one technological transition is presented. An example of designing and stamping of a specific conical part is given.
Graphical plans for construction of machinery and architecture have evolved over the last 6,000 years beginning from hieroglyphics to drawings on printable media, from the “Golden Age” of engineering graphics to the innovation of computer graphics and prototyping. The evolution of engineering design graphics as a profession has also evolved. Years before we entered the 21st century, higher education began to address the changes that technology brought to the curriculum. Now that we have entered the 21st century, we must move forward with technological innovations and creative thinking, but be cautious that we do not lose the art of freehand sketching. This paper traces the journey of engineering design graphics and the impact it has had in the academe and on the profession and the way designers work. It addresses the future of the field and the inevitable changes that emerging technologies will bring.