Dover Precision Components Expands Its TruTech High Performance Materials Portfolio

TruTech™ Materials Provide Foundation for Next-Generation Reciprocating Compressor Sealing Solutions

Dover Precision Components is proud to announce the expansion of its TruTech™ materials brand, delivering the latest advances in polymer science to enhance the performance and reliability of critical components in rotating and reciprocating machinery.

Dover Precision Components has made significant investments in its Materials Technology initiative to fully integrate materials research with engineering expertise and practical experience in machinery applications. A world-class team of material scientists has been assembled to develop proprietary TruTech polymeric materials, optimize process parameters and ensure product quality. A dedicated materials laboratory featuring state-of-the-art mechanical, chemical, optical and thermal analysis equipment, as well as advanced friction and wear testing, provides the necessary tools to fully evaluate materials and their signature properties. In addition, the recently constructed Dover Precision Components Innovation Lab allows testing in real-world environments to transform material properties into customer benefits.

Early results of this investment have already shown promise. The Dover Precisions Components Materials Technology initiative has introduced new materials for high-pressure, non-lubricated reciprocating compressor applications and developed new manufacturing methods to provide greater freedom to product development engineers.

“Our TruTech materials provide a significant advantage in meeting customer needs for performance in demanding operating conditions and position us to serve the next generation of reciprocating and rotating machinery,” said Jane Kober, Vice President of Marketing and Innovation for Dover Precision Components. “Our expertise enables us to develop, test, and deliver reliable solutions using the most advanced polymer materials.”

TruTech materials are designed for optimum performance characteristics in a variety of operating conditions and have decades of proven success in the field. They are formulated from high performance polymers, such as PTFE, PEEK, UHMWPE, PPS, polyimide and other high-temperature aromatic polymer materials, in combination with state-of-the-art fillers, carefully selected and formulated to satisfy application requirements. All formulation, manufacturing and testing is done in-house to ensure high quality standards and full traceability.

Broad research and development capabilities allow complete control of the material development process, from material composition and processing through manufacturing and product testing. Maintaining these capabilities in-house provides Dover Precision Components the flexibility to customize material solutions for specific applications and operating environments. New materials receive intensive laboratory analysis and undergo comprehensive testing before release to the field.

The Dover Precision Components Materials Technology initiative is currently developing material solutions to extend the useful life of Cook Compression® packing rings, wiper rings, piston rings and rider rings, as well as enhance performance in non-lubricated environments and process gases, such as hydrogen. The expanded TruTech materials portfolio also includes materials formulated to extend the service life of Waukesha Bearings® fluid film bearing products and Inpro/Seal® Bearing Isolators and Air Mizer® shaft seals.

Waukesha Bearings to Present at ASME Turbo Expo Virtual Conference

“Experimental Investigation and Numerical Modelling of a Large Heavily-Loaded Tilting Pad Journal Bearing With Polymer Lined Pads”

Authors

  • Filippo Cangioli, Waukesha Bearings (Presenting Author)
  • Richard Livermore-Hardy, Waukesha Bearings
  • Guy Pethybridge, Waukesha Bearings
  • Uemit Mermertas, Siemens Gas and Power GmbH & Co. KG
  • Michael Stottrop, Ruhr-Universitat Bochum
  • Beate Bender, Ruhr-Universitat Bochum

Presentation Schedule

Session 25-01
Start time: September 22, 2020, 10:15 am

Abstract

A large tilting pad journal (TPJ) bearing with “PEEK” polymer-lined pads was tested over a range of operating conditions representative of those experienced on turbo-generators used in fossil fuel power plants. The 500 mm diameter test bearing has four offset pivot pads, ball and socket pivots, load between pivot configuration, ‘Directed Lubrication’ and hydrostatic jacking features. The operating conditions explored during the test campaign characterize the static and dynamic behavior of the bearing over a range of shaft surface speeds between 40 m/s and 95 m/s and maximum specific load of 4.75 MPa. Similar test conditions were previously investigated on the same bearing with whitemetal lined pads, allowing for a direct comparison.

A thermo-elasto-hydrodynamic (TEHD) model for TPJ bearings with polymer-lined pads is introduced in this paper and validated against experimental test data.

Experimental data along with numerical results reveal and confirm the superior performance that can be attained using TPJ bearings with polymer-lined pads at high specific loads.

Read more about the paper on the ASME Turbo Expo site

Conference Registration

ASME Turbo Expo Virtual Conference registration details can be found online at the ASME website

Virtual event content will be available on-demand approximately one week prior to, during and after the virtual event conference dates.

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