Estimation of High-Pressure Valve Isolation Station Durability and Resource by Hardness Measurement Results

Zaydes, S.A.; Mashukov, Artem; Tatarinov, A. P.

doi:10.21285/1814-3520-2016-5-37-44

Cited by 3 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Build-up welding is one of the main technological methods of increasing the reliability and service life of valve, and it is used in various industries [1,2]. Sealing surface of valves is hard-faced by alloys which are tearing, corrosion and erosion resistant in aggressive environments.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of residual stresses in lock valve elements of petrochemical productions

Николаева

Mashukov

2017

MATEC Web Conf.

Self Cite

View full text Add to dashboard Cite

Abstract. Lock valves of the pipeline is an important and responsible product. It is designed to shut off the flow of liquid or gaseous fluid. During transportation ambient temperature reaches 400ᵒC, and the pressureover 30 MPa. Leakage of the fluid through the details and components of lock valves is not permitted. The batch of high-pressure valves was withdrawn after some time of its usage at the petrochemical enterprise. Premature wear of input branch pipe saddles was dis-covered. The cause of destruction of the input branch pipe saddles was erosion be-cause of abrasive particles, which are present in the working fluid. Locking node of the high-pressure armature is highly loaded element. The welding depositions are widely used to increase the strength of the valve locking node. It is established that under recommended heat treatment of the valve an ordered microstructure is formed and residual stress in the welding deposition zone is reduced. The article shows the relationship of residual stress with microstructure of the material. The magnitude of residual stresses in high-pressure valve locking node -in the brunch pipe saddle and the adjacent zoneswas determined by x-ray method.

show abstract

Section: Introductionmentioning

confidence: 99%