- Email: [email protected]
Seal inventions rewarded
NEWS
Seal inventions rewarded Professor Yuming Wang of John Crane Timing Seals has been presented with a China National Technology Invention Award. Professor Wang was the creator of the Tianjin Timing Seals Co, which John Crane acquired during the creation of John Crane Timing Seals. The Second Prize National Technology Invention Award was given to Professor Wang for a project he completed on helical grooved floating bushing seals. The combined screw-floating bushing seal which he created during the project has won two state invention patents and one practical new type patent. It was judged to be the first seal of its type in the world, and to incorporate technology at an advanced international level. So far eight sets of the combined
screw-floating bushing seals have been successfully applied to petrochemical and metallurgy applications, providing cost savings of approximately 190 million yuan (US$24m) for customers. This award recognizes Professor Wang’s technological invention and his continuing dedication and hard work. He has been engaged in the research, development and application of non-contact fluid sealing equipment and in the measurement and control of gas turbo technology for over 40 years. Contact: John Crane EAA, Nash Road, Trafford Park, Manchester M17 1SS, UK. Tel: +44 161 886 5993, Fax: +44 161 886 5990, Email: [email protected], Web: www.johncrane.co.uk
DSM to double capacity for engineering plastics in China Royal DSM NV has opened a new compounding site for engineering plastics at Jiangyin in the Jiangsu province of China. This project will double the total capacity for PA46, PA6 and PBT products of the company in China. The new site will meet the growing local demand of the Chinese market and serve as a prime sourcing base for the Asia Pacific region. The facility
design allows for additional capacity expansion to accommodate further growth in demand in the future. The project also includes the expansion of DSM Engineering Plastics’ Regional Development Service Center. Contact: DSM Engineering Plastics, Poststraat 1, NL-6130 AA Sittard, The Netherlands. Tel: +31 46 477 0496, Web: www.dsmep.com
First US gasket show a success The Gasketing/Converting Expo ’06, sponsored by the Gasket Fabricators Association (GFA) and held at the Omni Orlando Resort, attracted more than 500 attendees and 97 exhibitors to the first trade show in the US devoted to the gasketing and converting industries. In addition to the exhibition, the technical sessions included: • Don’t get stuck on adhesives: An overview of adhesive technologies, presented by Adchem Corporation, 3M and Stik-II Products. 6
• How to optimize your die cutting process, presented by Preco Inc, Precision Gasket Company and Relco Inc. • Waste stream management and reduction, by Monmouth Rubber and Plastics and Recycling Technologies. Contact: Gasket Fabricators Association (GFA), 994 Old Eagle School Road, Suite 1019, Wayne, Pennsylvania 19087, USA. Tel: +1 610 971 4850, Email: [email protected], Web: www.gasketfab.com
STLE Annual Meeting 2006 The Annual Meeting of the STLE in Calgary, Canada included two conference presentation sessions covering dynamic seals, and a Panel Session to discuss mechanical seal development. The papers presented were: • A transient mixed lubrication model of a rotary lip seal with a rough shaft, by D. Shen and R. Salant (Georgia Institute of Technology, Atlanta). • The interaction between the fluid film and the pad and the movement of fingers in a finger seal, by H. Li and M. Braun (University of Akron, Ohio). • Lubrication in textured surfaces considering fluid inertia effect, by M. Sarangi and L. Stephens (University of Kentucky, Lexington). • Potential for improving dry gas seal reliability through integral micro heat sinks, by L. Stephens (University of Kentucky, Lexington). • Theoretical analyses and field applications of gas-film lubricated mechanical face seals with herringbone spiral grooves, by Y. Wang, H. Yang, J. Wang, Y. Liu and H. Wang (John Crane Timing Seals Co Ltd, Tianjin, China). • Ultrasonic measurement of oil film thickness in a rotating face seal, by T. Reddyhoff, R. DwyerJoyce and P. Harpert (University of Sheffield, UK). • Thermo elasto hydrodynamic lubrication of mechanical face seals during transient period of start up, shut down, pressure and temperature changes, by B. Tournerie and N. Brunetiere (University of Poitiers, France). • Experiments and modeling of zero leakage backward pumping mechanical face seals, by A. Lebeck (Mechanical Seal Technology Inc, Albuquerque, New Mexico). • Dynamic and thermodynamic effects of fluid environment on mechanical seal operation in centrifugal pump applications, by R. Clark, H. Azibert and S. Wu (A.W. Chesterton Co, Groveland, Massachusetts).
The Seals Panel Discussion had the title, What we know and what we still need to learn about plain face mechanical seals. The moderator was Alan O. Lebeck of Mechanical Seal Technology Inc, and the panel members were Alan Evans (A.W. Chesterton), Bill Key (Flowserve Corporation), Itzhak Green (Georgia Tech), Tom Lai (John Crane) and Bernard Tournerie (University of Poitiers). Each panel member was invited to select one or more plain face mechanical seal topics and describe briefly the status of our understanding of those technical areas, the importance and application of the technology and issues that need answers. The topics presented and discussed included: • The dynamic tracking of seals with particular reference to dirty fluids film building products and shaft motion problems. • Light hydrocarbon duties that are running close to the vapor pressure. Features to promote tribochemical lubricity or boiling heat transfer could be designed into future tribological mechanisms. • Dynamic tracking of randomly worn plain face seals. • Parallel sliding load support the hydrodynamic-like fluid pressure that develops in plain face seals and supports significant load. The source of the mechanism is unknown at present. • Thermal effects on seals including heat dissipation and transfer, non-isothermal lubrication, temperature-dependent fluid properties and heat transfer. A report on this discussion panel will be published in a future issue of Sealing Technology. Contact: Society of Tribologists and Lubrication Engineers (STLE), 840 Busse Highway, Park Ridge, IL 60068-2376, USA. Tel: +1 847 825 5536, Fax: +1 847 825 1456, Email: [email protected], Web: www.stle.org
Sealing Technology July 2006
Seal inventions rewarded Professor Yuming Wang of John Crane Timing Seals has been presented with a China National Technology Invention Award. Professor Wang was the creator of the Tianjin Timing Seals Co, which John Crane acquired during the creation of John Crane Timing Seals. The Second Prize National Technology Invention Award was given to Professor Wang for a project he completed on helical grooved floating bushing seals. The combined screw-floating bushing seal which he created during the project has won two state invention patents and one practical new type patent. It was judged to be the first seal of its type in the world, and to incorporate technology at an advanced international level. So far eight sets of the combined
screw-floating bushing seals have been successfully applied to petrochemical and metallurgy applications, providing cost savings of approximately 190 million yuan (US$24m) for customers. This award recognizes Professor Wang’s technological invention and his continuing dedication and hard work. He has been engaged in the research, development and application of non-contact fluid sealing equipment and in the measurement and control of gas turbo technology for over 40 years. Contact: John Crane EAA, Nash Road, Trafford Park, Manchester M17 1SS, UK. Tel: +44 161 886 5993, Fax: +44 161 886 5990, Email: [email protected], Web: www.johncrane.co.uk
DSM to double capacity for engineering plastics in China Royal DSM NV has opened a new compounding site for engineering plastics at Jiangyin in the Jiangsu province of China. This project will double the total capacity for PA46, PA6 and PBT products of the company in China. The new site will meet the growing local demand of the Chinese market and serve as a prime sourcing base for the Asia Pacific region. The facility
design allows for additional capacity expansion to accommodate further growth in demand in the future. The project also includes the expansion of DSM Engineering Plastics’ Regional Development Service Center. Contact: DSM Engineering Plastics, Poststraat 1, NL-6130 AA Sittard, The Netherlands. Tel: +31 46 477 0496, Web: www.dsmep.com
First US gasket show a success The Gasketing/Converting Expo ’06, sponsored by the Gasket Fabricators Association (GFA) and held at the Omni Orlando Resort, attracted more than 500 attendees and 97 exhibitors to the first trade show in the US devoted to the gasketing and converting industries. In addition to the exhibition, the technical sessions included: • Don’t get stuck on adhesives: An overview of adhesive technologies, presented by Adchem Corporation, 3M and Stik-II Products. 6
• How to optimize your die cutting process, presented by Preco Inc, Precision Gasket Company and Relco Inc. • Waste stream management and reduction, by Monmouth Rubber and Plastics and Recycling Technologies. Contact: Gasket Fabricators Association (GFA), 994 Old Eagle School Road, Suite 1019, Wayne, Pennsylvania 19087, USA. Tel: +1 610 971 4850, Email: [email protected], Web: www.gasketfab.com
STLE Annual Meeting 2006 The Annual Meeting of the STLE in Calgary, Canada included two conference presentation sessions covering dynamic seals, and a Panel Session to discuss mechanical seal development. The papers presented were: • A transient mixed lubrication model of a rotary lip seal with a rough shaft, by D. Shen and R. Salant (Georgia Institute of Technology, Atlanta). • The interaction between the fluid film and the pad and the movement of fingers in a finger seal, by H. Li and M. Braun (University of Akron, Ohio). • Lubrication in textured surfaces considering fluid inertia effect, by M. Sarangi and L. Stephens (University of Kentucky, Lexington). • Potential for improving dry gas seal reliability through integral micro heat sinks, by L. Stephens (University of Kentucky, Lexington). • Theoretical analyses and field applications of gas-film lubricated mechanical face seals with herringbone spiral grooves, by Y. Wang, H. Yang, J. Wang, Y. Liu and H. Wang (John Crane Timing Seals Co Ltd, Tianjin, China). • Ultrasonic measurement of oil film thickness in a rotating face seal, by T. Reddyhoff, R. DwyerJoyce and P. Harpert (University of Sheffield, UK). • Thermo elasto hydrodynamic lubrication of mechanical face seals during transient period of start up, shut down, pressure and temperature changes, by B. Tournerie and N. Brunetiere (University of Poitiers, France). • Experiments and modeling of zero leakage backward pumping mechanical face seals, by A. Lebeck (Mechanical Seal Technology Inc, Albuquerque, New Mexico). • Dynamic and thermodynamic effects of fluid environment on mechanical seal operation in centrifugal pump applications, by R. Clark, H. Azibert and S. Wu (A.W. Chesterton Co, Groveland, Massachusetts).
The Seals Panel Discussion had the title, What we know and what we still need to learn about plain face mechanical seals. The moderator was Alan O. Lebeck of Mechanical Seal Technology Inc, and the panel members were Alan Evans (A.W. Chesterton), Bill Key (Flowserve Corporation), Itzhak Green (Georgia Tech), Tom Lai (John Crane) and Bernard Tournerie (University of Poitiers). Each panel member was invited to select one or more plain face mechanical seal topics and describe briefly the status of our understanding of those technical areas, the importance and application of the technology and issues that need answers. The topics presented and discussed included: • The dynamic tracking of seals with particular reference to dirty fluids film building products and shaft motion problems. • Light hydrocarbon duties that are running close to the vapor pressure. Features to promote tribochemical lubricity or boiling heat transfer could be designed into future tribological mechanisms. • Dynamic tracking of randomly worn plain face seals. • Parallel sliding load support the hydrodynamic-like fluid pressure that develops in plain face seals and supports significant load. The source of the mechanism is unknown at present. • Thermal effects on seals including heat dissipation and transfer, non-isothermal lubrication, temperature-dependent fluid properties and heat transfer. A report on this discussion panel will be published in a future issue of Sealing Technology. Contact: Society of Tribologists and Lubrication Engineers (STLE), 840 Busse Highway, Park Ridge, IL 60068-2376, USA. Tel: +1 847 825 5536, Fax: +1 847 825 1456, Email: [email protected], Web: www.stle.org
Sealing Technology July 2006