County Heat Treat

Endings . . . People We Lost

HTD Size-PR LogoBeginnings and endings often come together. As we begin a new year this month, we want to pause to remember a few lives that came to an end. Although the following are by no means the only important endings, Heat Treat Today would like to honor the memory of the following individuals who left their mark in the heat treating world.

This article first appeared in Heat Treat Today's December 2022 Medical and Energy print edition. Feel free to contact Bethany Leone at bethany@heattreattoday.com if you have a question, comment, or any editorial contribution you’d like to submit.


William “Bill” Cleary
Surface Combustion
(1960–2022)

Bill Cleary joined Surface Combustion directly after graduating college and remained with the company through the next 36 years. Working as a mechanical engineer and later as senior sales engineer, Bill was a constant presence at Surface Combustion — always the first person to help and listen.

 

Roger Joseph Fabian
Lindberg & Bodycote
(1940–2022)

Roger Fabian received his B.S. in metallurgical engineering in 1962 and his MBA in 1980 from Rensselaer Polytechnic Institute. He began his career with Lindberg Corporation in 1962 as a plant manager at Lindberg’s Boston Division, and in 1964 transferred to the Berlin Division, where he was named chief metallurgist and quality control manager. He was promoted to division manager at Berlin in 1979 and named vice president of Lindberg Heat Treating Company in 1992. When Lindberg was purchased by Bodycote Thermal Processing in 2001, Roger was named Eastern Region sales manager and finally retired in 2010 after 48 years. Roger had many professional accomplishments, including president of ASM International, president of the ASM Heat Treating Society (an affi liate society of ASM International), and was a long-time member of both societies. He also served as a president for the Metal Treating Institute (MTI), and as chairman of the ASM Technical Programming Board. He was instrumental in the development of the Center for Heat Treating Excellence (CHTE) at Worcester Polytechnical Institute and served as director-at-large and industrial liaison. He was known to be always a gentleman and a friend.

 

Klaus Hemsath
Surface Combustion
(1935–2022)

Klaus Hemsath and his family emigrated from Germany in 1967 to begin work at Surface Combustion. To this day, Klaus has over 60 patents to his name in the United States. Among his many accomplishments in the heat treating industry, Klaus founded Indugas, Inc. and wrote several books on climate change. Klaus will be greatly missed by his son, Mark Hemsath (Nitrex), as well as all others in the heat treating industry who knew him.

 

David Soderberg
County Heat Treat
(1951–2022)

With over 45 years of experience in metallurgy, Dave Soderberg had a vast knowledge of nitriding, aluminum solution aging, stress relieving, and other heat treating processes. His expertise especially honed in on aerospace heat treating, where he was appointed the designated supplier quality representative by GE Aerospace Engineering Group. Dave was a skilled metallurgist, able to develop heat treatments according to custom specifications.

 

Jon K. Tabor
Allied Mineral Products
(1933–2022)

After a 65-year career in refractories, Jon Tabor joined Allied Mineral Products in 1970 and helped to build it to the multi-national corporation it is today. Some of John’s accomplishments at Allied were transforming it into an employee-owned company and establishing a manufacturing presence in several countries, including China, South Africa, the Netherlands, and Brazil.

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Dan Kay on Brazing Stop-Off Materials

Heat Treat Today will soon be launching Heat Treat Consultants, a resource that offers the most comprehensive listing of heat treat industry consultants. An example of the type of exchange we anticipate will result from this resource is provided below.  Click the link above for a sneak peek at our inaugural list of consultants and more information about contacting one of the experts listed. 
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Mike Dascoli, general manager of County Heat Treat in Millbury, Massachusetts, asked our publisher, Doug Glenn, about a product the company had used previously, “an alumina oxide powder to coat graphite fixturing plates . . . in our vacuum furnaces to stop off against braze alloy run off and eutectic melting.” Doug queried whether it was aluminum brazing or more conventional brazing of stainless or other metals and Mike specified, “No aluminum brazing . . .  used to be gold/nickel, silver alloys. Here at County, I am just looking to introduce some options. I remember we would mix the powder with the acetone and paint it on the carbon plates. Acetone evaporated quick and the powder was left behind. For us now, it’s more about a layer against eutectics when heat treating.”

Dan Kay, Kay & Associates Brazing Consulting &Training Services

Doug brought in one of Heat Treat Today‘s consultants, Dan Kay of Kay & Associates Brazing Consulting & Training Services, to assist in hunting down the answer to Mike’s question.

Dan Kay:

Hi Mike —

Yes, there are a number of brazing filler metal (BFM) manufacturers who also produce and supply brazing stop-off materials that can be painted onto graphite surfaces such as you mention in your note to Doug Glenn.  Here are just a few:  Surface Flow Technologies (Div. of LSN Diffusion Int’l) in Michigan, Wall Colmonoy Corp in Michigan, Vitta Corp in Connecticut, and Wesgo Metals (Div. of Morgan Advanced Materials) in California are some of the primary ones.  

Stop-off materials come in different colors, the coloring of them being merely to identify its manufacturer, since all stop-off materials use metallic oxide materials to create their “stop-off” capabilities, and all these oxide powders are essentially white, to begin with.  Thus, to differentiate the various stop-offs they began to color them so that people would learn to associate green stop-off with company A, pink stop-off with company B, red stop-off with company C, etc.

White stop-off products are essentially the weakest of all the colored stop-offs out there and are primarily aluminum-oxide products in a paint-like consistency.  The binders/gels used to make the stop-offs vary considerably from manufacturer to manufacturer are proprietary, and you’ll not get any of them to actually tell you about all the ingredients in them.  People are often surprised to hear that a product such as Phillips Milk of Magnesia, available in lots of stores or pharmacies, is actually a decent stop off (magnesium oxide) for a number of applications.

But you are correct to say that you can make your own in many different ways by merely mixing some aluminum-oxide powder, or titanium-oxide powder, etc., in with a variety of quick-drying solvents, perhaps also with a thin acrylic type cement to give it adherence, paint it onto graphite surfaces, and after evaporation you would be left with an adherent layer of that protective oxide barrier, so that it prevents direct contact of a metal (especially any iron-containing metals) with the graphite, since an iron-carbon reaction is to be avoided.  

I’d be happy to assist you further with this, if you have additional questions, since I’ve had much direct manufacturing experience over my 45+years in the brazing world, a lot of it involved in making BFMs, brazing stop-offs and cements, etc., and am pretty much aware of the companies today who make and supply such materials.

On my website at http://www.kaybrazing.com, you will see a tab on the homepage that shows “Brazing Suppliers”. By clicking on that tab you can see a listing of the different companies who produce these materials, and in that tabular section the name of each company (such as those I mentioned above) is a hotlink that will bring you directly to that company’s website so that you can search it for a specific type of product that you might desire.  It part’s of the service that I want to provide to users of my website.  I hope you will find it useful.

Let me know how I can help you further.

Best regards,
Dan

Daniel Kay
Kay & Associates
Brazing Consulting &Training Services
4 Lawton Drive
Simsbury, CT  06070
Phone:  860-651-5595

E-mail:  dan.kay@kaybrazing.com
Website:  http://www.kaybrazing.com


Heat Treat Consultants is a unique opportunity for personnel in the field to engage some of the industry’s knowledge powerhouses with questions about equipment, processes, management, troubleshooting — just about anything having to do with heat treating. We invite you to take a look at our inaugural crew of Heat Treat Consultants by clicking on the provided links, and we would be happy to help you make any connections. Just email Doug Glenn at doug@heattreattoday.com. You can also submit any questions or comments on Heat Treat Today articles to editor@heattreattoday.com.

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