Paper Title:
Remanufacturing of High Temperature Ball Valve by Surface Engineering Technology
  Abstract

Four kinds of coating materials and two kinds of brush plating materials were screened and sprayed on the surface of valve ball by plasma spraying technology and brush plated on the surface of valve seat by electrical brush technology, respectively. The wear resistance of the sealing pairs and the properties of the plasma sprayed coatings were tested. The results indicate that the sealing pair composed of the valve ball with the plasma sprayed coating of Al2O3-TiO2 and the valve seat with the brush plating layer of nickel tungsten has best combination property. The gap of the sealing pair at room temperature and the leakage rate at elevated temperature of the high temperature ball valve were obtained by FEM method and analysis method, respectively. Therefore, the open and close torque of the high temperature ball valve was determined. According to the results of the research, the failed ball valve was remanufactured, and the performance inspection was also conducted. The remanufactured ball valve has much longer service life than the original one and its sealing behavior was also improved significantly.

  Info
Periodical
Advanced Materials Research (Volumes 97-101)
Edited by
Zhengyi Jiang and Chunliang Zhang
Pages
1381-1384
DOI
10.4028/www.scientific.net/AMR.97-101.1381
Citation
X.L. Huang, L. Liu, B. Q. Gu, C. L. Shao, J. F. Zhou, "Remanufacturing of High Temperature Ball Valve by Surface Engineering Technology", Advanced Materials Research, Vols. 97-101, pp. 1381-1384, 2010
Online since
March 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: J.D. Bressan, G.A. Battiston, R. Gerbasi, D.P. Daros
Abstract:Present work investigates the wear resistance of SAE 52100 steel coated with nanocoating Al2O3 by the Metal-organic Chemical Vapor...
1336
Authors: Jia Hu Ouyang, Takashi Murakami, Shinya Sasaki, Yu Zhou
Abstract:The friction and wear characteristics of a cathodic arc ion-plated CrSiN coating in sliding against different counter materials have been...
1747
Authors: Cheng Wang, Wei Yu, Cheng Zu Ren
Abstract:In order to predict fatigue life of hybrid ceramic ball bearing (HCBB) by Ioannides and Harris (IH) theory, the contact subsurface stress...
215
Authors: Jian Hua Du, Yi Xu, Yuan Yuan Li
Chapter 2: Materials and Alloys
Abstract:Cu-based nanometer composites with ω(n-SiO2)=1.0 % nano-SiO2 were prepared through ball milling and powder metallurgy...
487
Authors: Tadeusz Szymczak, Adam Brodecki, Andrzej Eminger, Zbigniew L. Kowalewski, Dariusz Rudnik
Chapter 4: Experimental Methods for Investigations of Devices, Machines and Structures
Abstract:The paper reports experimental results from tests carried out at room temperature on servo-hydraulic system dedicated for examination of the...
232