Processing technology for enhanced spiral rib enhanced steel plastic composite pipe

Abstract

The invention discloses a composite processing technology for an enhanced spiral rib and a thin-wall steel pipe. The processing technology comprises the steps of shaping a reinforcing rib, guiding the shaped reinforcing rib in place and performing welding and composite positioning on the thin-wall steel pipe. The processing technology particularly comprises the following steps: a, uncoiling the selected reinforcing rib according to the design requirement; b, performing tempering pretreatment on the reinforcing rib; c, performing preforming treatment on the radian of the reinforcing rib; and d, performing composite welding on the reinforcing rib and the thin-wall steel pipe. According to the technical scheme, a new production process for a spiral rib enhanced pipe is provided, so the defect that the thin-wall steel pipe hardly bears the tensile force and the bending moment for winding the reinforcing rib on the outer surface of the thin-wall steel pipe is overcome, and the reinforcing ribs with various shapes can be wound on the outer wall of the thin-wall steel pipe.

Description

technical field [0001] The invention relates to a processing technology for transportation pipelines used in inflammable and explosive places such as underground coal mines, in particular to a processing technology for reinforced spiral rib reinforced steel-plastic composite pipes. Background technique [0002] Many fields such as coal mines, oil and natural gas extraction and transportation require pipelines of different diameters to transport gas, liquid or fluidized solids. These fields not only require the pipeline to have conventional mechanical properties (such as bending resistance, tensile resistance, impact resistance), but also have Light weight, easy installation, low cost and other advantages; the spiral rib reinforced pipe will reduce the thickness of the pipe because it greatly improves the external pressure resistance and ring rigidity of the pipe, thereby reducing the weight of the pipe, and is easy to install and cost-effective. Low, therefore, the scope...

AI Technical Summary

Problems solved by technology

The latter method is suitable for processing steel strip-type spiral reinforcement, but it is only suitable for steel pipes with spiral welds, and is not suitable for seamless welded pipes and electric welded pipes; the prepared pipes have low axial and radial tensile and compressive strengths; Moreover, for thin-walled metal steel pipes, the ring stiffness and mechanical strength are low, and it is difficult to withstand the tension and bending moments required to wind reinforcing ribs on its outer surface

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