Application of diamond to enhance choke valve life in erosive duties

Wheeler, D.W., Wood, R.J.K., Harrison, D. and Smith, E. (2006) Application of diamond to enhance choke valve life in erosive duties. Wear, 261, (10), 1087-1094. (doi:10.1016/j.wear.2006.02.003).


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As part of a LINK surface engineering project, a consortium of universities, hard materials suppliers, valve manufacturers and end users have investigated the incorporation of CVD diamond into choke valves to enhance valve life in erosive duties. Diamond was applied to regions of the valve trim and tested under full scale conditions in a high pressure valve loop test facility and compared with standard uncoated tungsten carbide trims. The valve trims were tested with a 60 bar pressure drop and a flow rate of 7.5 l s?1 using water–sand slurry containing 1% (w/w) solids with a mean diameter of 194 ?m. The results show that valve seats and plugs with a partial coverage of CVD diamond exhibit 50–60% greater resistance to damage caused by sand particle impingement. Moreover, it is felt that further improvements are attainable with subtle improvement of the design of the trim and coating processes to allow complete coating of critical components with complex design.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/j.wear.2006.02.003
ISSNs: 0043-1648 (print)
Related URLs:
Keywords: choke valves, diamond, erosion, surface engineering, tungsten carbide trim
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions : University Structure - Pre August 2011 > School of Engineering Sciences > Engineering Materials & Surface Engineering
ePrint ID: 43720
Accepted Date and Publication Date:
Date Deposited: 26 Jan 2007
Last Modified: 31 Mar 2016 12:17

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