Welcome - DECEMBER 2019 Newsletter

Dave Haimbaugh, President
Dave Haimbaugh

As each year closes, I like to write down my highlights and lowlights for each month. It is not hard to do and I am always surprised by the volume of noteworthy events experienced in a given year. As a new decade approaches, now is a great time to take stock of this one. It has been a prosperous decade for IHT. There is no doubt that we are much better for the relationships enjoyed with our customers, vendors, friends and associates, and we are grateful.

Thank you all!
Happy New Year

Dave Haimbaugh


Heating steel is half of the hardening process. Quenching is the second and most critical half of the process. A lot of thought and design go into the proper heat extraction of austenitized steel. Cooling rates are dependent on factors such as material, case depth required, and wall thickness. Quench speed is controlled by polymer concentration, volume, pressure, and impingement angle to the contact area. It can also be said that the secret to controlling distortion often involves just the right combination of these heat extracting factors.

Carbon steel requires faster heat extraction. Alloy steel not so fast. Tool steel is an altogether unique and challenging group of materials that run the gamut of quench viscosities from water to oil.

Oil is often the quench of choice for the most uniform heat extraction of parts that are immersed. Ductile cast iron materials love to be oil quenched. It is sometimes the only quench media that yields crack free results. Oil must be agitated and circulated through a clean heat exchanger to prevent the risk of flash point fire. The flammable nature of oil is a concern and so it must be used with respect.

Austenitized parts with areas of differing geometric mass must be quenched in a manner that cools as uniformly as possible to minimize the risk of cracking. This is often achieved by delaying quenching for a few seconds to allow different cross sections to homogenize in temperature.

All quench media must be filtered to prevent particulate from clogging quench heads, which reduces flow. Quench heads need to be inspected regularly even with a good filtration system in place. This is an ongoing exercise that must never be ignored.

Employee Profile
Jeremy Krock – CNC Programmer

Jeremy Krock
Jeremy Krock

Where did you grow up?

Hoffman Estates, Illinois

What is your favorite movie genre?


What is your favorite season of the year, and why?

Fall. The sun is still out, but it is cooler. There are fewer bugs in the air. Plus, pumpkin coffee – cream, no sugar.

What are your responsibilities/priorities at IHT?

I aid in making induction coils for IHT, reverse engineering, and sometimes drawing coils in SolidWorks to make prints. In addition, I am involved in CNC programming, operating lathes and mills.

What do you think is your strongest skill?


What goals are you setting in your first year at IHT?

My goal is to meet all due dates. I figure if I hit this goal, it would mean that I have achieved any other goal I set in order to succeed.

In which core value do you believe in the most strongly?

To support personal growth and well-being, because I think it adds value in and out of the workplace.

How do you unwind from a rough day?

Lifting weights


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