Failure analysis of a non-integral pipeline collet connector

Fassina, P.; Guagliano, Mario; Lazzari, Luciano; Vergani, L.; Vimercati, M.

doi:10.1016/j.engfailanal.2004.12.009

Cited by 8 publications

(1 citation statement)

References 6 publications

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“…So forecast and control of the flange joint leakage rate is of great importance. The Roth leakagemodel [6][7][8] analysis is used in this paper, so that a leakage prediction model of lenticular gasket could be established.…”

Section: Leakage Model Of the Lenticular Gasketmentioning

confidence: 99%

Seal Characteristics and Leakage Model of Metallic Large-Diameter Lenticular Gasket

Gong

Liu

et al. 2013

AMR

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Through studying on the application principle of existing metal lenticular gasket, the structure design was finished, and design methods and calculating models of lenticular gasket larger than 6inch diameter were attained. Seal mechanism of the lenticular gasket and contact mechanics of the flange joint was analyzed by using finite element method. Stress state, contact width and contact deformation parameters of the lenticular gasket on working was obtained. Based on the analyzing results, leakage forecast model of metal lenticular gasket was presented. In the influencing factors of actual working state, such as inner pressure, outer pressure, medium viscosity, and surface roughness and so on, surface roughness is important, so surface machining precision of an in-use large-diameter lenticular gasket should be improved as far as possible. The conclusions will lay foundation for the future engineering application of large-diameter lenticular gasket.

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Section: Leakage Model Of the Lenticular Gasketmentioning

confidence: 99%

Seal Characteristics and Leakage Model of Metallic Large-Diameter Lenticular Gasket

Gong

Liu

et al. 2013

AMR

View full text Add to dashboard Cite

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Corrosion analysis of a heat‐exchanger in epichlorophydrin production process

Wang¹,

Chen

2010

Materialwissenschaft Werkst

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The failure of E230 heat-exchanger in the production of epichlorophydrin (ECH) form dichloropropanol (DCP) was analyzed and material solutions are recommended. The analysis indicates that the combined effect of stress corrosion cracking (SCC) and dissolution of HCl and HClO in the DCP mixture solution in the E230 heat-exchanger chamber to the tube surface and chamber wall contributes to the failure of heat-exchanger tubes and the perforation of E230 heatexchanger chamber. It is recommended to reduce the content of Cl -in the DCP mixture solution and to increase its pH. Titanium, Type 316L stainless steel (SS), and electroless Ni-P coating can be considered as the candidate materials. Also, the process can be divided into two series step with one step heating the temperature from 30 8C to 608C, and the other step heating the temperature from 60 8C to 908C. For the lower temperature step, the Type 316L SS or electroless Ni-P coating can be used. For the higher temperature step, Titanium can be applied. Periodic cleaning of the tube surface and chamber inner surface deposit is necessary. Intensifying the inservice inspection and monitoring is also required.

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