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

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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.
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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

Tight Joint Clearances for Nickel Brazing (part 3)

Dan Kay
Dan Kay
September 27, 2022
No Comments

Dan Kay's blog series about tight joint clearances for nickel brazing continues with part 3.


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Dan Herring

Tight Joint Clearances for Nickel Brazing (part 2)

Dan Kay
Dan Kay
August 26, 2022
No Comments

Unfortunately, as mentioned earlier, all of these temperature-lowering, eutectic-forming elements in nickel-based BFMs are also hardeners; that is, the phase structures resulting from solidification of these elements have virtually zero ductility. Thus, the last phases to solidify (in the center of the joint) will be hard and non-ductile.


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Dan Herring

Tight Joint Clearances for Nickel Brazing (part 1)

Dan Kay
Dan Kay
August 12, 2022
No Comments

Nickel brazing is unique in the brazing world in that each of the nickel-based brazing filler metals (BFMs) available for use today depends on the use of temperature-lowering ingredients (i.e., temperature-depressants) such as boron, phosphorus and/or silicon to enable the BFM’s usefulness for joining stainless steels and many other superalloys for critical aerospace applications.  


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Dan Herring

Brazing Honeycomb onto 304L Stainless Steel Cylindrical-Pipe OD (part 2)

Dan Kay
Dan Kay
July 27, 2022
2 Comments

This concludes our step-by-step discussion that we began last time.


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Dan Herring

Brazing Honeycomb onto 304L Stainless Steel Cylindrical-Pipe OD (part 1)

Dan Kay
Dan Kay
July 11, 2022
No Comments

Question: What is a good method to attach a large sheet of honeycomb material around the entire outside diameter (OD) of a large 304L stainless steel cylinder so that it can be effectively brazed in place around that OD?


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Dan Herring

How to Eliminate 'Holds' (part 3)

Dan Kay
Dan Kay
June 22, 2022
3 Comments

Dan Kay's blog series on eliminating "holds" in brazing cycles continues.


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Dan Herring

How to Eliminate 'Holds' (part 2)

Dan Kay
Dan Kay
May 27, 2022
No Comments

Dan Kay's blog series on eliminating "holds" in brazing cycles continues.


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Dan Herring

How to Eliminate 'Holds' (part 1)

Dan Kay
Dan Kay
May 11, 2022
No Comments

I recently asked the production manager at an aerospace company, “Why do your brazing personnel have those temperature holds in their furnace brazing cycles?”


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Dan Herring

The Importance of Cleanliness in Brazing (part 4)

Dan Kay
Dan Kay
April 27, 2022
No Comments

As shown in the last line of Table 2, the water that you use in your cleaning operations is very important.  I strongly recommend that you use deionized water in your shop and not well water or city water. City water can go bad on occasion, whereas having your own water deionizer in your shop is an excellent safety measure. Well water may be great for drinking, but it contains minerals (calcium oxide, magnesium oxides, etc.) that are strong braze-inhibitors.


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Dan Herring

The Importance of Cleanliness in Brazing (part 3)

Dan Kay
Dan Kay
April 1, 2022
No Comments

Dan Kay's blog series on the importance of cleanliness in brazing continues.


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