Another body type spiral pile and its welding method

摘要

The present invention is provided with a pile body and the drilling tip is provided separately, the drilling tip and a tail of the pointed end and the frustoconical, portion of the drilling tip is inserted into Hamase~tsu hole of the pile body, between the slope portion and the open end surface of the pile of the drilling chip to form a weld groove of the annular, pile body and drilling chips, different body type spiral pile and its welding is welded to the integral structure in an annular weld groove It discloses a method. Welding method of different body type spiral pile: 1) and the joint butt step, 2) before welding chestnut - and the training step, 3) and the pre-heating step, 4) Select the welding wire ERNiCrMo-3 of nickel-based, tungsten inert gas welding is adopted to Le - performs bets welding, coating A - a welding step of filling the weld and the outer layer welding in the arc welding, 5) and after the heat treatment step welding, by is performed. The present invention has realized an effective welding drilling tip of the pile body and 12Cr1MoV of Q235B, butt between the joint is simple and reliable and enhances the working efficiency, increase the effective welding area, bi - de to increase the strength and reduce the processing and production costs. .BACKGROUND