Sandvik Materials Technology will show visitors to its stand at PulPaper 2014 how to increase boiler lifetimes with composite tube solutions that yield excellent corrosion properties and superior resistance to stress corrosion cracking.
This is the second time that the company has exhibited at Pulpaper, the world’s premier pulp and paper expo. Now in its 8th year, the event is set to attract industry professionals from around the globe to the Helsinki Exhibition and Convention Centre.
“Sandvik is very pleased to be among the exhibitors at this year’s PulPaper to showcase our new composite tube which satisfies increasing demands for improved corrosion and cracking resistance,” explained Timo Peltola, Global Product Manager, Composite and Boiler Tubes.
A significant advantage of composite tube by Sandvik is that it is suited for applications where conditions outside and inside the tube require material properties that cannot be met by one material alone.
Two different alloys are metallurgically bonded together to achieve good thermal transfer properties. One alloy is used to withstand corrosion, while the other often is an approved pressure vessel material.
Timo Peltola added: “Visitors to our stand can see up close why Sandvik has remained at the forefront of composite tube production since the 1970s. Our composite tube is optimized for black liquor recovery boilers, syngas coolers, waste heat boilers and waste-to-energy boilers.”
Materials on display will include SanicroTM 67/4L7 premium composite tube, relied upon in severe conditions for black liquor recovery and other boiler applications. The product’s key attributes include superior anti-corrosion properties and longer lifecycles due to higher chromium levels and a low working-hardening rate.
These qualities make the grade more resistant to stress corrosion cracking and general corrosion than standard 304L/4L7 composite tubes.
“Sandvik has already delivered more than 3 million meters of composite tube worldwide. Our products are reinforced by quality controls that are more rigorous than any official standard,” said Timo Peltola.
Other innovative Sandvik solutions on display will include hollow bar and bar for cost effective component production, such as valves, washers and other key parts involved in pulp and paper applications; duplex tubes and fittings for piping; and hydraulics and instrumentation tubing for paper machines.
Sandvik material experts will be on hand throughout the exhibition to advise on optimal material grade selection and suitability for specific applications