The Magic Behind the Metal
Like the superhero that can leap tall buildings, the valve industry is made of steel.
#basics #materials
Gaskets Are Not Created Equal
Gaskets are near the bottom of the food chain of valve components; trim, body materials and packing seem to get a lot more press.
#materials #components #maintenance-repair
Metal Additive Manufacturing in the Valve Industry
Metal Additive Manufacturing (AM) is a fascinating technology that has gained acceptance over the past several years.
#materials #automation
Interior Coatings for Waterworks Valves
Since the 1990s, two types of epoxy coatings have been commonly specified and used for iron valves in the waterworks industry: fusion-bonded epoxy and liquid epoxy.
#materials
Passivation and Pickling
Q: I have customers that ask for their stainless-steel valves to be pickled and I have others who ask for them to be passivated.
#materials
Thermal Spray Coating
Q: What are the pros and cons of using a thermal spray coating like HVOF?
#materials
Magnetic Particle Examination: Not the Only Way to Test for Flaws
Magnetic Particle Examination (MT) is a popular, relatively low-cost method to perform nondestructive examination on ferromagnetic materials.
#materials
The New Version of NACE MR0103
Q: How do the requirements in this International Organization for Standards (ISO) document differ from those in the previous version?
#standards #materials
Portable Alloy Verification Devices
Q: What are the differences between the results you get from a portable alloy verification device and the results you see on a supplier’s certified materials test report (CMTR)?
#materials
Cast vs. Forged: The Ongoing Debate Takes a New Direction
In the valve industry, the cast versus forged debate has been around for many years.
#materials #standards
Hardfacing Alloys and Processes for Advanced Ultra-Supercritical
Cobalt-based Stellite 6 has been the workhorse for providing improved wear resistance and service life in valve components installed in power generating facilities for over 75 years.
#maintenance-repair #components #materials
The ASME Code Process for a Code Case: Non-Traditional Manufacturing Methods/Materials
What are ASME Code Cases and how do I get one?
#standards #materials
Hardfacing Stainless Steel
Q: Can duplex stainless steels be hardfaced without adversely affecting the base material properties?
#materials
Enhancing Valve Component Performance Through Design by Nanolamination
Today, the total cost of corrosion in the U.S. exceeds $1 trillion annually—and from oil & gas operations to municipal infrastructure, metal-based components like valves are in some of the most corrosive environments imaginable.
#materials #components
NACE MR0175/ISO 15156 & NACE MR0103
Q: Is it possible to produce remanufactured cast valve bodies that comply with NACE MR0175/ISO 15156 and NACE MR0103?
#materials
Conflicting requirements in Section II and VIII materials specifications
Q: In two Materials Q&A columns back in Winter 2010 and Spring 2010, you discussed making flanges from forged bar, and in the Spring column you indicated that it would be interesting to submit an inquiry to ASME regarding the conflicting requirements in the Section II material specifications vs.
#standards #materials
PWHT of Thick Ferrous Valve Castings
Castings made from many different ferrous alloys are produced for many industries, including valves.
#materials
Forgings: Higher Quality with a Cost
While the words “cast” and “steel” often go together in the valve world, so do “forged” and “steel.” Forged steel valves are a cornerstone of the world’s valve inventory.
#materials
Innovative, Practical Corrosion-Resistant Coatings
Like anything made of metal, valves are subject to corrosion that compromises performance.
#materials
Advanced Machine Tools Keep Production Costs in Check
The valve landscape has changed over the past few decades—instead of über-high volumes of simple valves, many buyers and makers of valves are increasingly aiming for low-to-medium volumes of complex, high-precision valves made from exotic materials.
#gate-globe-check #materials