Friday, December 6, 2019

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...

Let’s hear it for welding

Heat-treating and metallurgy are topics that attract the overwhelming interest of attendees of technical conferences and are written about in numerous articles. However, a...

Find the right equipment

Vacuum carburizing or LPC, neutral hardening, oil or HPGQ (high pressure gas quench), vacuum pumps, graphite insulation, radiation shields or ceramic insulation, graphite or...

Intensive Quenching Calls For Very High Cooling Rates Part 2

Intensive quenching (IQ) is defined as cooling, usually using pure water, at a rate several times higher than the rate of conventional quenching. Fast,...

Anatomy of a Heat-Treating System

Ninety-eight 600-pound trays are in continuous process, 13 are in the pre-process queue, nine preheating, 14 in the boost carb, eight in the diffusion...

Furnace Doors

No matter the configuration, single or multi-chamber vacuum, batch integral quench, continuous, or even pits — an item that all furnaces have in common...

Heat treating is not for the faint of heart

Why heat-treating furnaces look the way they do, Part 2

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...

The big gamble: Electric vehicles or bust

There’s a big gamble going on in Detroit, and I don’t mean at Greektown Casino; it’s at the big three automakers. All have, in...

Furnace Types

Heat treating furnaces consist of several subassemblies: insulation (fiber and brick), heating systems (electric and gas), material handling, quenching, atmosphere system, process and control...

Allocating space for case hardening furnaces

When selecting neutral or case hardening furnaces that require pits and have vertically mounted radiant tubes, facility managers must make sure that the equipment...

Stainless Steels

Kitchen sinks, refrigerator or oven doors, and tableware are what many people think of when they are asked what’s made from stainless steel (SS)....

Intensive Quenching

Heat treating is similar to art in many ways, but not for the reasons you might think. Art, it’s said, is in the eye...

Carburizing today: The secrets to predicting success

Predicting the outcome for today’s various carburizing processes requires different procedures and processes. Carburizing today is performed by two primary processes, at or above atmospheric...

The metallurgical R&D laboratory

Remembering old-school lab work is a blast from the past

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...

Heat Treating, Furnaces, and Unintended Consequences

A few decades ago, my involvement with depleted uranium (DU) began in the metallurgical R&D department, developing program logic to heat treat DU in...

Heating with natural gas

It’s no secret that the heat treating industry is one of the major recipients of the impact when the U.S. Environmental Protection Agency (EPA)...

Carburizing and Steel

In carburizing, gears must be heated to reach the appropriate temperature for the steel grade without causing excessive grain growth and distortion in a...

Meeting Automotive Efficiency Standards

For automobiles where competing hardening processes and materials are involved, automotive designers and heat treaters have choices when deciding how to meet efficiency standards. There...
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