第三章 紧固件FASTENERS.docVIP

PAGE PAGE 5 第三章 紧固件FASTENERS This chapter gives general information about Boeing approved fasteners used on the airplane. 本章节讲解波音批准紧固件常识。 Fastener Types紧固件类型 Fasteners 紧固件 Permanent fasteners 永久性紧固件 solid rivets lockbolts hex-drive bolts radius lead-in bolts blind rivets blind bolts sandwich panel inserts Removable fasteners 可拆紧固件 bolts screws set-screws nuts nutplates threaded inserts washers pins We will emphasize the Solid Rivet, Blind fasteners and Lockbolts,Hex-drive Bolts. 我们将着重了解固杆铆钉，盲紧固件，锁螺栓，Hi-Lok。 1.Solid Rivets固杆铆钉 Most of the fasteners used on this airplane are solid-shank rivets made from specified aluminum alloys. Solid rivets are permanent fasteners that are used where rivets must have sufficient shear strength and where complete hole-filling is important. 飞机上应用的紧固件大部分是铝合金制的固杆铆钉。作为一种永久性紧固件，必须有足够的剪切强度并且能完全塞满铆钉孔。 You can use softer alloy rivets as alternative fasteners for the usual rivets in some locations.A larger number of fasteners or a larger diameter of fastener can be necessary to get the same structural strength. Make sure the material edge margin and fastener spacing are correct when you use softer alloy rivets as alternative fasteners. 在一些位置可以使用软合金的铆钉替代一般铆钉,有必要使用大量的紧固件或者大直径紧固件以达到同等结构强度,并保证紧固件的边距和间距正确。 2.Blind Fasteners盲紧固件 (1)Blind fasteners are fasteners that you can install when you have access to only one side of the structure. 盲紧固件用于只能接近结构一边的情况下。 (2)Although blind fasteners are permitted in some conditions as alternatives to solid fasteners, a larger number of fasteners or a larger diameter of fastener can be necessary to get the same structural strength. Make sure that the material edge margin and fastener spacing are sufficient. In some repairs there will be specified time-limits for replacement with permanent fasteners, or inspections, or both. 在一些位置可以使用盲紧固件替代一般铆钉,有必要使用大量的紧固件或者是大直径紧固件以达到同等结构强度,并保证紧固件的边距和间距正确。在一些修理中，会指明紧固件更换或（和）检查的期限。 3.Lockbolts and Hex-Drive Bolts锁螺栓，Hi-Lok (1)Lockbolts are permanent fasteners that have a collar th