Saturday, March 28, 2020

Predicting hardness by the Grossman H-Value

In the last article, we described a method of calculating the Grossman H-Value . In the article before last, we described a method of...

The life of a heat treat process engineer

Editor’s note: Beginning with the March 2020 issue of Thermal Processing, there will be multiple contributors to the Quality Counts column. Conrad Kacsik’s Jason...

Q&A with Greg Jennings

What’s a typical day like for you at Wisconsin Oven? My typical day is quite a bit of fun. I’ve got three kids, and it’s...

Q&A with Chris Stevens

What’s a typical day like for you at Dalton Electric? It starts and ends with our customers. Our value proposition to our Dalton users is...

Simulation tools to effectively calculate process

One common goal for a wide range of industries has been to increase power density in shaft and gear components. The steel producing industry...

Determining Grossman H-value from cooling curve data

In the last article, I described how the Jominy end quench test could be used to predict hardness for a series of different round...

Quality review: Heat-treat related certifications

As heat treaters, we must admit that, at the end of the day, what we feel we are paying for is a certification that...

Determining austenite grain size

Grain size is a critical metallurgical characteristic, significantly influencing design parameters such as strength and toughness. Austenite grain size (often referred to as prior-austenite...

Q&A with Justin Sims

Who is Dante Solutions, and what do you do with the company? Dante Solutions is an engineering company with a main focus on improving heat...

Determining heat-treat operator training

With the fast pace of change in the heat-treat industry, it is understandable that more automation is in demand. This automation inevitably improves repeatability...

Understanding the Jominy end quench test

The Jominy end quench test (ASTM A255 ) is an extremely simple and useful test that is applicable to many materials besides steel...

QA 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...

ASTM E18 and Nadcap: Rockwell hardness testing

Rockwell hardness testing is a common way to ensure the material response to heat treat is conforming and is required by applicable industry and...

Hardenability – the influence of tramp elements

Hardenability is the property of a material to deeply harden, and not the ability to get hard . This basic concept has driven much...

Q&A with Jeff Marshall

What does MHV do for the heat-treat industry? We make our customers more competitive, which is good both for the customers and for the industry...

Microstructural evolution, its effect on Ti6Al4V alloy

Titanium alloys are extensively used in aerospace, petrochemical, marine, and medical applications, thanks to their superior strength-to-weight ratio at elevated temperature, corrosion resistance, and...

Purchasing a furnace: Quality concerns to consider

For any heat-treater, whether captive or commercial, purchasing a furnace is the largest investment that can be made. It is important to establish a...

Developing a superalloy with superior heat resistance

Demand for superior machinery that can operate effectively under extreme conditions is driving the development of newer alloys. One significant example is the preparation...

Achieving results through cold treatment

Cold treatment is a sub-zero thermal treatment process primarily used to reduce the retained austenite content of alloy and high carbon steels. Cold treatment...

Q&A with Heat Treat 2019 attendees

HEAT TREAT 2019, is scheduled to hit Detroit, Michigan, October 15–17. The show will bring thousands of industry experts and insiders to the motor...

Quality staff: Understanding the technical side

Last month, we examined the history and heat-treatment of aluminum and how it applies to the quality functions of the industry. This month, we...

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...

Creep deformation mechanisms in 9CrMo steel

The Generation-IV reactors in nuclear power plants are expected to address the growing energy demand by producing electricity and, at the same time, mitigating...

Aluminum heat-treating has unique challenges

From a metallurgical and quality perspective, aluminum heat-treating presents unique challenges when compared to carbon-based steels. This article will examine the aspects of aluminum...

Q&A with Adam Jacobson

What’s a typical day like for you at JN Machinery? We’re a small company, so, it really depends on what’s going on as far as...

Combatting undesirable NMTP formations

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,...

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....

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...

The importance of contract review

Within any aspect of our business structure, understanding the specific requirements needed to produce product that conforms to customer requirements is important. These requirements...

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 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...

How to keep decarburization in check

The performance of heat-treated steel components is largely dependent on the condition of their surface. Wear and fatigue resistance are examples of design criteria...

Method means comparing checklists vs. procedure

Whether commercial heat-treating or captive, procedures are essential to the production of conforming product and its repeatability. Procedures can be challenging to write at...

Q&A with Eric Ford

What does Graphite Metallizing Corporation do for the heat-treat industry? Graphite Metallizing Corporation makes a product called Graphalloy. It’s basically a graphite/metal alloy, that we...

How did we get where we are today?

Having worked in the heat-treating industry for 58 years, I agreed in January 2011 to write a monthly column about all things heat-treating for...

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...

Process quality control in heat treatment

In thermal processing, process quality control is imperative to produce and control conforming product and overall conformance. In this article we will be examining...

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...

Process control is vital to heat-treating

The definition of process control can only be defined by the experience of the per-son to whom the query is presented. Everyone involved in...

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...
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