Properties of Ceramic-Lined Composite Steel Pipes and their Application

Shuge, Zhang; Zhou, Xiaoxin; Qian, DongHao

doi:10.4028/www.scientific.net/kem.217.219

Cited by 6 publications

(4 citation statements)

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“…Many materials were used to coat metallic pipelines and fabricate non-dielectric pipes, one of which was an alumina (ε r = 9.4) torus. Ceramic materials have been widely used in pipeline manufacturing, such as the coating for metallic pipelines [42][43][44], ceramic pipes for irrigation [45], heat transmission [46,47], sewer pipes application [48,49], and ceramic-lined pipes [50,51], which have advantages with respect to corrosive resistance, high strength, heat resistance, and thermal stability. Dimensions of ceramic pipes are various.…”

Section: Simulation Resultsmentioning

confidence: 99%

Non-destructive evaluation of pipes by microwave techniques and artificial neural networks

Xie¹,

Yang²,

Yuan³

et al. 2020

Meas. Sci. Technol.

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Near-field imaging based on an electromagnetic sensor has been widely used for nondestructive detection. An approach to detect the near-surface defects in pipeline coatings and dielectric pipelines is proposed. Based on the characteristics of resonant frequency shifts, a novel method using artificial neural network (ANN) is established to quantitatively evaluate circular-section shape defects in pipes, such as air bubbles in pipeline coating layers or qualitative characterize non-circular section-shape defects. The proposed method has three important modules: a new resonator for data acquisition, a signal-processing algorithm for data preprocessing, and an ANN for quantitative imaging. In the designed sensor, we extend the tip of the sensing ring and introduce an appending in the ring gap for high sensitivity. Simulations show that the sensor can detect a defect with a radius as small as 0.7 mm. The raw resonant frequency shifts obtained by the sensor scanning at an angle interval around the specimen first are preprocessed by curve fitting, sampling, and adaptive data interpolation or truncation. Then, using an ANN, the relationships among resonant frequency shifts, external radius of the specimen, and defect size are modeled for imaging of circular-section shape defects. Preliminary simulations and measurements illustrate the efficacy of the method. Consequently, a contactless, high-resolution, near-field imaging measurement based on sensor scanning for inspecting pipe structures is obtained.

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Section: Simulation Resultsmentioning

confidence: 99%

Non-destructive evaluation of pipes by microwave techniques and artificial neural networks

Xie¹,

Yang²,

Yuan³

et al. 2020

Meas. Sci. Technol.

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“…On account of the reliable and excellent physical and chemical properties in high temperature environment, such as high hardness, oxidation resistance, wear resistance, etc., alumina ceramic is of incomparable application value in aerospace, oil and gas transportation pipe, high temperature reactor and other fields [1][2]. Fluid media usually contains H2S, CO2, Cland other corrosive media components in the oil and gas industry, forming different acidic environments in the transportation process [3][4].…”

Section: Introductionmentioning

confidence: 99%

Optimization on the diode laser joining process of Al2O3 liners

Luo¹,

Zhou²,

Liu³

et al. 2023

HSET

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The effects of fillers width and energy density of laser on weld morphology were studied. The mullite filler with the quality ratio of 70wt.% Al2O3-30wt.% SiO2 was determined as the initial fillers for the joining of Al2O3 liners according to the crystalline phase of Al2O3 liners. The transient multiple physical model of diode laser joining Al2O3 ceramic liners was built by Multiphysics COMSOL, and the coupling of temperature and stress field was carried out. The thermodynamic properties of the Al2O3 liners and fillers were analyzed and tested. Numerical results showed that the increase of fillers width would effectively reduce the thermal stress of the joint. With the increase of the energy density, the temperature and thermal stress of the seam zone increased gradually. With the increase of laser joining heat input, weld penetration increased slowly and then sharply. The experimental results indicated that the weld zone free from pores and macro cracks can be formed with the fillers width of 3mm, laser power of 700W and welding speed of 1mm/s.

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“…As a result of combining combustion synthesis with modern metallurgical technologies, the ceramiclined pipes fabricated by SHS metallurgical process have been used widely in the industries of mining, coal, metallurgy, machinery, chemistry and so on [1,2]. However, during fabricating the composite pipes, there are cracks in lined ceramics generally.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Stress Fields in Lined-Ceramics of the Composite Pipes Fabricated by SHS Metallurgical Process

Liu

Jin³

et al. 2007

KEM

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Based on the SEM observation on cracks in lined ceramics of the composite pipes, the stress fields in lined ceramics were analyzed. The results indicated that there are the compressive field and heat stress field in lined ceramics, resulting in the existence of radial cracks and net cracks; besides being influenced by wall thickness of ceramic layer, the strength of compressive stress field is also dependent on bonding strength between metal and ceramics, and the strength of heat stress field is dependent on temperature gradient in lined ceramics during cooling of the ceramics.

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Properties of Ceramic-Lined Composite Steel Pipes and their Application

Cited by 6 publications

References 0 publications

Non-destructive evaluation of pipes by microwave techniques and artificial neural networks

Non-destructive evaluation of pipes by microwave techniques and artificial neural networks

Optimization on the diode laser joining process of Al2O3 liners

Investigation on Stress Fields in Lined-Ceramics of the Composite Pipes Fabricated by SHS Metallurgical Process

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