A cladding thickness prediction model construction method and device for a bimetal composite pipe, and a cladding thickness prediction method and device

Abstract

This invention relates to the field of bimetallic composite pipe welding technology, specifically a method for constructing a welding overlay thickness prediction model, a welding overlay thickness prediction method, and related apparatus for bimetallic composite pipes. The method includes obtaining hydrogen permeation parameters of bimetallic composite pipe samples with different welding overlay thicknesses; simulating the welding process for bimetallic composite pipes with different welding overlay thicknesses to obtain hydrogen distribution cloud maps for each welding overlay thickness; and establishing a quantitative mapping curve between the welding overlay thickness and the equivalent hydrogen charging pressure based on the hydrogen distribution cloud map for each welding overlay thickness, thereby obtaining a welding overlay thickness prediction model. This invention employs a combination of simulation and experimentation to construct a welding overlay thickness prediction model, predicting the optimal welding overlay thickness for bimetallic composite pipes. This allows for reasonable control of the material cost of the welding overlay, achieving maximum practicality with the most reasonable cost, and providing a theoretical basis for the engineering design of high-pressure hydrogen transport composite pipes.

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