AAT Metallurgical Services LLC

Induction and Sustainability Tips Part 1: Cleaning and Maintenance

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Discover expert tips, tricks, and resources for sustainable heat treating methods Heat Treat Today's recent series.  And, if you're looking for tips on combustion, controls systems, or induction in general, you'll find that too! Part 1, today's tips, digs into cleaning and maintenance

This Technical Tuesday article is compiled from tips in Heat Treat Today's May Focus on Sustainable Heat Treat Technologies print edition. If you have any tips of your own about induction and sustainability, our editors would be interested in sharing them online at www.heattreattoday.com. Email Bethany Leone at bethany@heattreattoday.com with your own ideas!


1. Maintenance of Induction Coils Used in Hardening Applications

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Soap and hot water will remove sticky quench and debris.
Source: Induction Tooling, Inc.

How should you maintain induction coils used in hardening applications? Elbow grease — a little goes a long way. After each use, a simple solution of soap and hot water will remove sticky quench and debris. Scrub hardened dirt with a Scotch-Brite pad. Check for pitting, arcing, and insulator damage. If all is good, use a hot water rinse, and it’s ready for use. If the inductor is to remain on the machine for an extended period, it is advised to wash it and the associated bus daily. Check for damage. Following this simple procedure will reduce business waste.

Source: William Stuehr, President/CEO, Induction Tooling, Inc.

#partscleaning #inductorcoil #hardening

2. Maintaining Tooling Fixtures for Induction Hardening

Tooling fixtures are usually maintained simply by storing them inside a mandrel and a box. This system will prevent coils from getting distorted.

Most tooling should be rinsed in hot water to wash off the polymer and then dried and stored away for future use.

It is a good practice to use deionized water for cooling the power supplies.

Source: Madhu Chatterjee, President, AAT Metallurgical Services LLC

#partscleaning #toolingfixtures

3. Switch to Aqueous

As industry tries to become more “green,” a number of companies are switching from lubricants that are petroleum or mineral oil-based to water-based (“aqueous”) lubricants instead. However, some of these companies then make the mistake of not changing their degreasing fluids that they use to remove these lubricants prior to their next processing operations, and stay with their standard degreasing fluids, such as acetone or alcohol, which are not effective at fully removing water-based lubricants. Instead, they need to run tests to find an appropriate alkaline-based degreasing fluid for such water-based lubricants, since alkaline-based degreasers will be effective at removing such lubricants. Commonly available dish-detergents (alkaline-based) have been shown to be highly effective for such use.

Source: Dan Kay, Owner, Kay & Associates

#aqueouscleaner #gogreen #lubricants


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Meet the Consultants: Madhu Chatterjee

Heat Treat Today recently unveiled its Heat Treat Consultants page in the October 2018 print edition (available in digital format here) and at FNA in Indianapolis, Indiana. We offer this comprehensive listing of heat treat industry consultants as part of our efforts to help minimize the effects of heat treat “brain drain.” With so many heat treat brains growing older, the expertise that once used to reside inside of manufacturing operations is dwindling. Where, then, do manufacturers with in-house heat treat departments go when they need heat treat answers?

Turn to Heat Treat Today and our comprehensive list of heat treat industry consultants, which we will introduce to you one by one in this occasional feature, “Meet the Consultants”. There is no more comprehensive list of heat treat consultants. Learn more about Madhu Chatterjee of AAT Metallurgical Services LLC (who also provided the Technical Tuesday article this week, Comparative Study of Carburizing vs. Induction Hardening of Gears ), and then click through to the page to read more details about each consultant. We are adding more regularly. Contact them directly, or call us and we’ll introduce you to them. Whether it’s a technical process question, a safety concern, a compliance issue, or a business related question, one of our heat treat consultants will be able to help. If you are a consultant and would like to be listed, please contact Doug Glenn


Name: Madhu Chatterjee
Company Name: AAT Metallurgical Services LLC
Location: Troy, Michigan
Years in Industry: 40+
Consulting Specialties:

  • Manufacturing and Engineering
  • Process and Product Improvement
  • Automotive Research and Development

Send an email | Website | 614-519-0740, 352-315-9090

Briefly:

Madhu Chatterjee is a consultant with specialties in the automotive industry and experience in advanced engineering, research and development, and process and product improvement. He graduated from Indian Institute of Technology with a Bachelor’s Degree in Metallurgical Engineering and a Master’s in Ferrous Metallurgy. Madhu holds 10 patents and has won 5 awards in his areas of expertise. In 1977, he began working at General Motors as a Senior Staff Engineer. In 2001, he became the Director of Special Projects at Inductoheat during which time he gained a Master’s in Materials Engineering from Purdue University, and in 2010, he moved on to be the Director of Technology at Bodycote Thermal Processing. He returned to GM in 2014 as an Advanced Lead Engineer, working a total of 29 years at GM. He founded AAT Metallurgical Services LLC in Michigan where he is currently president of the company.

Significant Accomplishments:

  1. Bachelor’s Degree in Metallurgical Engineering and Master’s in Ferrous Metallurgy and Material’s Engineering
  2. Holds 10 U.S. patents in the area of Induction Hardening System and Method, Manufacturing Technique for Multi-layered Structure with Magnet Using an Extrusion Process, and Ring Assembly Manufacturing Apparatus and Method
  3. Recognized and awarded in 5 areas of expertise
  4. Possesses over 40 years of experience in heat treating, including 29 years in the automotive industry
  5. Co-author of papers presented at ASM International Conferences
  6. Regular present at ASM International, ASM Heat Treating Society, and other industry-related conferences
  7. Scheduled Co-Presenter at ITPS/IFCS 2018 on “Cutting Edge Trends: A Consultants Panel Looks at the Future,” International ThermProcess Summit/International Finishing & Coatings Summit 2018, Atlanta, Georgia
  8. Founded and served as president AAT Metallurgical Services, LLC

Links to Heat Treat Today Articles or Other Resources from This Consultant

References available upon request from the Consultant

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