Argon is a favorite gas used in many vacuum brazing shops since it is an inert gas that will not react with any of the metals being heat treated or brazed in those vacuum furnaces.

It should never be “necessary” to refrigerate brazing pastes prior to their use.

There is a lot of interest today in joining engineered-ceramic materials (such as alumina) to themselves or to metals.

There is a lot of interest today in joining engineered-ceramic materials (such as alumina) to themselves or to metals.

Question:We do torch brazing of copper and steel tubing/piping for the HVAC industry, and we try to do a nitrogen purge of the ID of the tubing during our

Question: We silver brazed what we thought was a so-called “oxygen-free” grade of copper (C10200) in our hydrogen brazing furnace at 1500°F (815°C) – using BAg-8 filler metal –

Question:On some of our parts, prior to induction silver braze, we tack weld the parts to be brazed. The parts are fixtured during the tack weld to hold dimensions

In addition to the stop-offs mentioned last time, please note that milk of magnesia, readily and cheaply available from many drug and food stores, is actually a decent stop-off that may prove effective for many general-purpose needs. So, do some experimentation and find out what kind of stop-off works best for you.

Brazing paste is not difficult to make yourself. All you need is some brazing filler-metal powder, a gel binder and a paint shaker.

Question:We have a question relative to extending the expiration date on braze paste. Do you know of an industry standard that we could reference? Is there a particular rule of