扣件製程 : 蝶形扣件製造方法 (Manuf. Method of Wing Fasteners)

扣件製程 : 蝶形扣件製造方法 (Manuf. Method of Wing Fasteners)

Keywords: Wing bolt, Fastener, Forging, Patent, ... .
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蝶形螺栓 (wing bolt) 鍛造方法：
[] 下料 => 預成形 => 精整 => 切邊 [US20120198906]。

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REFERENCE：

• [] Feng-Long Wu, 2011, Method for manufacturing cold-forged wing bolts, US20120198906A1, Feng-Long Wu.

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