Hardening depth measurement
Surface hardening heat treatments are popular in the manufacture of steel products as a means of significantly improving strength and fatigue resistance and mitigating...
IHEA conducts technical seminars in conjunction with Furnaces North America
IHEA conducts technical seminars in conjunction with Furnaces North America
Variation in steel hardenability
Many heat-treating processes cannot tolerate appreciable variations in steel hardenability. For an established in-control process, deviations in chemical composition and starting microstructure may result...
Q&A with David Wolff
What’s a typical day like for you at Nel Hydrogen?
I’m in field sales and work with customers to make sure their process needs that...
Q&A with Steve Mueller
What does Praxair do for the heat-treat industry?
Praxair produces and sells industrial gases, such as nitrogen, argon, hydrogen, and helium. Our main focus for...
A technical guide to quenching
From a quality perspective, verification of the conformance of quench requirements can be accomplished by examining a furnace chart that shows the quench trend....
Non-Martensitic Transformation Products (NMTP)
Whether formed during a conventional quench and tempering process, carburizing, or induction hardening, non-martensitic transformation products (NMTP) are widely considered undesirable microstructural features. However,...
Retained austenite significant for strength, toughness
The role of retained austenite (RA) and the magnitude of its influence on the performance of steel components are continually debated. Depending on the...
Hardness scale conversion
The use of hardness testing as a quality control method to check the outcome of a thermal treatment process is a common application of...
Thermal triplets: PM, sintering, and case hardening
From my experience, powder metals (PM), sintering, and case hardening are three processes that could be said to be joined at the hip. More...
Enhanced properties of metal matrix nanocomposites
Application of carbon nanotube (CNT) reinforced metal matrix nanocomposite (MMNC) has been increasing rapidly since the discovery of CNT in the 1990s. These novel...
Q&A with Matthias Pascher
What is your role at Buehler?
I am the product manager for our hardness testing equipment within Buehler.
Buehler is a global supplier of apparatus for...
Q&A with Guido Locatelli
Tell us about your company.
The company was established in 1984 near Milan, Italy, in the city of Caravaggio, and since its inception the headquarters...
Carbon Diffusion and Carburizing Parameter Selection
Although carburizing is a complicated process, it can be broken down into two main steps: carbon generation in the furnace and carbon diffusion into...
Q&A with Andrew Bassett
How did ATP get started?
During the early 1990s, the National Aerospace and Defense Contractors Accreditation Program (Nadcap) began embracing all special processes, and we...
Q&A with Don Selmi
What is Premier’s mission?
To provide heat-treating systems that are dependable as well as innovative, with performance-proven technology that will enhance the physical properties and...
Carbon potential verification
Choose from several verification methods for best fit, then develop a plan to correct for out-of-spec test results
Quality management is vital in heat-treating
Quality management in the thermal-processing industry is essential to not only conformance, but also as a check-and-balance to both systems and operations. Quality at...
Q&A with Raymond Daniel Noble
What are your duties with Noble Industrial Furnace? What is your typical day?
My duties include, but are not limited to, oversight of design and...
Heat-treatment of modified 9CrMo steel
The modified 9CrMo steels, such as Grade 91, Grade 92, and HT9, are materials of choice for fossil-fuel-fired power plants and Next Generation Nuclear...
