High strength bolt friction joint for splice plate

摘要

PROBLEM TO BE SOLVED: To provide a splice plate which allows a high strength bolt friction joint to have stabilized joint strength and life duration at high levels, by clarifying the component requirements of a sprayed layer which is applied to a friction joint surface of the splice plate to reliably increase friction resistance.;SOLUTION: A splice plate 1 for a high strength bolt friction joint has a sprayed layer 2 on the friction joint surface by metal spraying. The sprayed layer 2 includes a portion inward from the surface thereof to a depth of 150±25 μm (surface-side sprayed layer 2a) having a porosity of 10% to 30%, and a portion from the depth of 150±25 μm inward from the surface of the spraying layer to the interface between a splice plate base material 3 and the sprayed layer 2 (interface-side sprayed layer 2b) having a porosity of 5% to less than 10%.;COPYRIGHT: (C)2012,JPO&INPIT