事先无准备 发表于 2025-3-25 05:49:55
Springer-Verlag Berlin Heidelberg 1968巨大没有 发表于 2025-3-25 10:57:49
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https://doi.org/10.1007/978-3-662-01164-5Pressen; Presses; Schmiedepresse; design; extrusion; metal; organization痛恨 发表于 2025-3-26 04:44:51
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Principles of Forging Presses,uirements to the forging, a forging ratio of two to six is eligible. The forging ratio is the ratio of the ingot cross-sectional area to that of the finished forging. Overall dimensions of ingots as a function of forging cross-sectional area and forging ratio may be easily taken from graphs (fig. 1).