Question: I was torch brazing a large-diameter copper tube into a copper fitting and built up a nice fillet on the top of the joint at my customer’s request. Someone told me that the joint I made was not a properly brazed joint but was a braze-weld instead. What did he mean? How does braze welding with a torch compare to what I thought I was doing?

An aerospace brazing company uses a high-temperature AMS-4782 nickel-based brazing filler metal (BFM) when vacuum brazing a high-temperature nickel-based honeycomb material onto the substrate to hold it in place for brazing.

The conclusion of a Q&A with our resident brazing expert about combining aluminum brazing and heat treatment. Part 1 can be found here.

A Q&A with our resident brazing expert about combining aluminum brazing and heat treatment.

We conclude our discussion on this topic.

What does “mesh size” mean, and what should we be doing about it?

This post concludes our discussion on this topic.

Since it’s been a while, let’s review once again and compare in more detail the differences between correctly performed manual torch brazing and a typical braze-welding process. You might even need to go back and review earlier posts.

The same torch can be used for each process (brazing, braze welding and welding), but the torch-handling techniques involved – and the training – are VERY different.

Dan Kay fields a reader question about the differences between brazing and braze welding.