Commercial sintering of chromium powder metallurgy (PM) steels

Chromium was introduced as a potential alloying element for powder metallurgy (PM) steels in the 1990s. Since then, numerous chromium-containing alloy systems have been...

Laser sintering of thermoset polyimide composites

Selective laser sintering (SLS) is an additive manufacturing technique that builds 3D models layer-by-layer using a laser to selectively melt cross sections in powdered...

Going viral: Outside-the-box research into sterilizing N95 masks for re-use

With the COVID-19 pandemic still raging across the country and the world, the need for personal protective equipment for medical professionals has pushed the...

Temperature sensor selection: The basics of temperature measurement using thermocouples

You are probably somewhat familiar with the thermocouple, or you wouldn’t be reading this article. But there are important points about thermocouples that must...

Heat work to the fore

Sporting its new tagline — Enabling a Clean, Efficient & Electrified Future — the highly regarded Ceramics Expo will once again head for Cleveland’s...

Spectroscopic study of plasma nitrocarburizing processes with an industrial-scale carbon active screen

The active screen plasma nitrocarburizing technology is an improvement of conventional plasma nitrocarburizing by providing a homogeneous temperature distribution within the workload and reducing...

Pyrometry – A Different Take

Any article on pyrometry, as it applies to AMS2750 and thermal processing, usually gets a lot of attention. Typically filled with interpretation, clarification, and...

Process control, monitoring, and quality assurance specifics for induction heating

Controlling the induction-hardening process is a demanding application compared to most other thermal processes. The first and foremost requirement is to precisely control the...

Temperature uniformity survey ( TUS ) general practice for CQI-9 and AMS2750E

In the automotive and aerospace manufacturing industry, CQI-9 and AMS2750 specifications are established as guidelines to: “address pyrometric requirements for thermal processing equipment used for...

The Future of Kiln Lining

Lining iron and steel furnaces is critical to extend the life of the furnaces and to protect the purity of the metals being heat...

Embracing industry change

Most companies, regardless of the industry or business, want to see improvement. Whether it is improving customer satisfaction or quality or bottom-line profit or...

Take Another Look at Deep Cryogenic Treatment

What is happening in the world of Deep Cryogenic Treatment (DCT)? Research into this field is exploding. Research is coming from companies and major...

Vacuum heat treatment for additive manufacturing

Additive manufacturing means any technology capable of obtaining a final component starting from a 3D CAD file and adding material layer by layer. At...

Combining cleanness, strength, and toughness for affordable power densification in steel components

Increased power density in mechanical power transmission components means greater durability — allowing existing designs to achieve greater capacity or reduced size and mass...

Nonlinear electromagnetic acoustic testing method for tensile damage evaluation 

This paper describes an approach for measuring material plasticity using contactless electromagnetic acoustic method. Harmonic generation from noncumulative fundamental longitudinal wave in specimen is...

Operational efficiencies and minimizing energy consumption: An introduction

Energy conservation is the prevention of the wasteful use of energy. In today’s economic and climate-change environment, regulations and competition for resources require industrial...

Troubleshooting and Prevention of Cracking in Induction Hardening of Steels: Lessons Learned –...

One of the most common applications of induction heat treatment is the hardening of steels, cast irons, and powder-metallurgy materials, developing an attractive blend...

Optimizing Temperature Measurement in Heat-Treatment Operations

Quality and efficiency in heat-treatment operations requires accurate temperature measurement. Specifying thermocouple wire and thermocouples carefully will lead to greater temperature measurement accuracy and...

Troubleshooting and Prevention of Cracking in Induction Hardening of Steels: Lessons Learned – Part 1

Newly employed heat-treat engineers, designers and practitioners may need an appreciable amount of time to gain the required knowledge and experience in understanding the...

Intelligent Gas Carburizing with Super IQ ™

Atmosphere furnace or vacuum furnace, which to use? In carburizing, for instance, the workhorse furnace is the atmosphere gas carburizing furnace with integral oil...

New Cooling Tower Technology Augments HVAC and Industrial Processes

Recent developments in factory-assembled cooling-tower technology are increasing the applications for so-called “package” towers supporting HVAC and industrial processes. Although field-erected towers have been...

Improving audit performance

To add value to the aerospace suppliers who participate in Nadcap, there is an ongoing effort to do more to assist them in successfully...

Selection of Oil Quenchants for Heat-Treating Processes

Modern quenching oils offer a wide range of capability and performance. The selection of the proper quench oil is critical for proper heat-treating operations....

An In-Depth Look at Polymer Quenchants

Quenching of various alloys to achieve mechanical properties has been an area of scientific research for many years. Using polymer quenchants has proven to...

Recent progress in three areas of induction-heating technology

This paper introduces recent research progress of induction heating technology at Baosteel, specifically the development of full coil static induction heating technology of the...

Energy and material efficiency of steel powder metallurgy

Concern about global warming motivates the reduction of greenhouse gas emissions from manufacturing, but the environmental impact of the whole powder metallurgy production chain...

Sintering experiments under way on International Space Station

Gravity is a nonuniform stress that influences sintering densification, microstructure evolution, final properties, and dimensional uniformity. An early conjecture was that in the absence...

Filament-Wound Composites Have Specialized Curing Requirements

Filament winding is a manufacturing method for making tubular and cylindrical shapes of extreme strength and light weight. The technology involves wrapping a mandrel...

Machining graphite components

The various forms and fixtures used in vacuum furnaces and various sintering operations nearly all require graphite. Machining some of these graphite components can...

Principles of pyrometry

Regarding comprehension, on a scale of 1 to 10, AMS2750E is about a 12. Practically speaking, when an engineer, quality person, or operator picks...

The versatility of the pit furnace

Top-loading furnaces, commonly referred to as pit furnaces, have played a major role in the heating treating landscape for the last century or longer....

Reducing measurement error when making thermocouple transmitter connections

The thermocouple (TC) is a thermo-electric device used to measure temperature and nearly two-thirds of U.S. temperature measurement makes use of thermocouples. Most industrial...

Optimizing Gas Supply for Industrial Lasers

Laser cutting of metals and other materials has grown rapidly due to developments in laser power, advancements in CNC automation, and decreasing costs. The...

High-efficiency gas burners make good economic sense

Even though the price of natural gas is currently low, the investment in high-efficiency gas burners makes sense economically. This article discusses different types...

The future of kiln lining fibers

Lining iron and steel furnaces is critical to extend the life of the furnaces and to protect the purity of the metals being heat...

Selecting the correct industrial ovens for finishing applications

Finishing is defined as “completing the manufacture or decoration of a material or product by giving it an attractive surface appearance.” In industrial applications,...

The Advantages of an All-Metal Vacuum Furnace Hot Zone

For more than 70 years, the vacuum furnace has been available for metal processing requirements, and is widely accepted as the ideal equipment for...

Freezing Out the Competition

Most companies are looking for a secret that can help them keep a step ahead of the competition — a little edge to run...

Additive manufacturing and gas technology applications

As the demand for additive manufacturing (AM) products has steadily increased, so have the many enabling technologies including laser powder bed fusion, laser metal...

Plasma/ion nitriding for enhancing component properties

Thermochemical surface treatments, such as plasma/ion nitriding, are effective ways of enhancing the mechanical properties of ferrous and titanium alloy parts . Through the...
X