By S. L. Semiatin
Quantity 14A is an critical reference for production, fabrics, and layout engineers. It offers finished assurance and crucial technical info at the process-design relationships which are had to decide upon and regulate metalworking operations that produce shapes from forging, extrusion, drawing, and rolling operations. In-depth dialogue of forming gear, techniques, fabrics, and complex modeling strategies make it a considerably new up to date ASM instruction manual.
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Additional resources for Asm Handbook: Volume 14A: Metalworking : Bulk Forming (ASM Handbook)
The forming of such alloys is enhanced by the development of an ultrafine grain structure in the preform material. Advanced roll forming can provide near-net shapes at lower cost compared to forging and ring rolling because of the elimination of dies and the ability to utilize a given set of rollers for multiple geometries. Because of the generally high deformation that is imposed over the entire part cross section, microstructure uniformity also tends to be excellent. More detailed information on the technology can be found in the article “Roll Forming of Axially Symmetric Components” in this Volume.
In the example cited in this work, the objective was to minimize underfill via optimization of the preform shape, which was represented as a series of B-spline curves described through a collection of shapecontrol parameters. FEM simulations were run to determine the rate at which die fill changed with respect to changes in the shape-control parameters. , changes with respect to the change in each shape-control parameter) were determined in order to pick a new search direction in shape-control-parameter space.
C) Surface finish requirements for sliding contacts specifications (geometric, material, and surface characteristics) in one process—that is, reach net shape, net surface, and net structure in one operation. In reality, a sequence of operations is required to meet all objectives. Figure 2 is a simplified view of optional sequences of operations that transform raw materials into finished metallic products. Refinement of raw materials results in either a powder or molten form of the material. These forms of matter can be converted by either consolidation (of powder) or solidification (of liquid metal) into semifinished ingot or billet form, or they can be consolidated or cast directly into finished product form.