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Home » Blogs » Industrial Heating Experts Speak Blog » Dan Kay - Brazing

Industrial Heating Experts Speak Blog
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Industrial Heating Blog
Learn from leading experts in the thermal processing industry. Read Industrial Heating’s Expert Speak blogs. Helpful and timely technical information from those who know.

Blog Topics

Dan Herring - Heat Treatment

David Pye - Metallurgy

Dan Kay - Brazing

Debbie Aliya - Failure Analysis

George Vander Voort - Metallography

Thomas Joseph - Intellectual Property

Omar Nashashibi – Government

Reed Miller – Thermal Processing

Recent Comments

definitions HT, passivate

Man Care

Brazing of 2205 Duplex Stainless Steel to 7020 & 5083 Aluminum alloy

grain boundary oxidization

Thanks to the Mike or Mikes!

Dan Herring

The Importance of Cleanliness in Brazing (part 2)

Dan Kay
Dan Kay
March 15, 2022
No Comments

When a part fails to meet service requirements, the brazing personnel are surprised and often can’t understand why the parts failed because the outside surfaces came out of their brazing furnace looking shiny, clean and bright. Based on the nice-looking outside surfaces of the parts, should they not assume that the inside of the brazed joints were also similarly cleaned and therefore probably brazed well? Unfortunately, no! 


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Dan Herring

The Importance of Cleanliness in Brazing (part 1)

Dan Kay
Dan Kay
February 24, 2022
No Comments

There are a number of very important steps that must be followed in order to ensure good brazing, one of which is that the parts to be joined must be clean before being assembled for brazing.   


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Dan Herring

Erosion of Thin Tube Walls during Brazing (part 2)

Dan Kay
Dan Kay
February 3, 2022
2 Comments

Two methods can be used to prevent the base-metal erosion discussed last time in part 1.


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Dan Herring

Erosion of Thin Tube Walls during Brazing (part 1)

Dan Kay
Dan Kay
January 19, 2022
No Comments

How can we prevent the erosion of thin stainless tubes that we need to braze into several through-holes in some thick stainless plates during our furnace brazing operations?


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Dan Herring

What is the real purpose of a braze fillet? (part 3)

Dan Kay
Dan Kay
January 4, 2022
No Comments

Here is the third and final part of Dan Kay's blog series about the purpose of a braze fillet. Part 2 can be found here.


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Dan Herring

What is the real purpose of a braze fillet? (part 2)

Dan Kay
Dan Kay
December 10, 2021
No Comments

Here is part 2 of Dan Kay's blog about the purpose of a braze fillet.


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Dan Herring

What is the real purpose of a braze fillet? (part 1)

Dan Kay
Dan Kay
November 18, 2021
No Comments

When visiting a brazing job-shop recently, I was told that one of the shop’s clients insisted that some of their components be re-brazed because the braze fillets were not large enough, according to that client. When I examined the component myself, the braze fillet was actually perfectly OK, but the shop’s client thought that all fillets – welded or brazed – needed to be large.


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Dan Herring

Brazing Stainless Steel Q&A

Dan Kay
Dan Kay
October 25, 2021
No Comments

Brazing expert Dan Kay answers a detailed reader question about brazing 304L stainless steel. They are seeing a few dark spots on the product being brazed. Find out what Dan says the problem(s) might be.


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081821-Kay-1

Argon can be dangerous!

Dan Kay
Dan Kay
August 18, 2021
No Comments

Question: I've heard that argon can be a dangerous gas to work with in my brazing operations. I don't understand how this can be since argon is known to be an inert gas and appears to be quite safe to use. How can it be dangerous?


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Dan Herring

Brazing 3D-Printed Parts (part 2)

Dan Kay
Dan Kay
July 14, 2021
No Comments

Let’s finish the discussion we started last time. As shown in Table 1, it is important that you look at the surfaces that you want to braze together and decide if they meet the design criteria needed for brazing.


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