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.

TAV Vacuum Furnaces of Italy will design, build and ship two horizontal vacuum heat-treatment and brazing furnaces to a manufacturer of aircraft structural components that specializes in spherical bearing solutions. The furnaces have useful dimensions of 600 mm wide x 600 mm high x 900 mm deep (23.5 x 23.5 x 35.5 inches) with a maximum gross charge of 600 kg (1,323 pounds). They have a maximum operating temperature of 2192°F (1200°C). An AMS 2750F-compliant SCADA system provides comprehensive furnace monitoring and control. The configuration of the furnaces enables quick and easy loading of different volumes.

It’s been almost 100 years since Bennett Heat Treating and Brazing Co. first opened its doors. Based in Newark, N.J., the company was established in 1923 by Wilbur Bennett, a one-armed blacksmith. The commercial heat treater and longtime MTI member really took off – and became a family affair – in 1954 when Anthony Quaglia purchased the business.

We conclude our discussion on this topic.

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

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.

Abbott Furnace Company received an order from a global automotive supplier for a continuous-belt brazing furnace. The electrically heated furnace, which will be installed in Mexico in the fourth quarter of 2020, will be used for brazing of fuel-delivery components. The four-zone furnace is rated for 2150°F (1177°C) and includes a 24-inch-wide belt and a silicon-carbide-domed muffle.

Gasbarre Thermal Processing Systems rebuilt and shipped a 24-inch, four-zone continuous mesh-belt brazing furnace for an automotive-parts supplier in Mexico. The rebuild included a new 330 stainless steel muffle, new silicon-carbide heating elements, new cooling sections and new furnace controls to meet CQI-9 requirements. The CQI-9 controls package includes data acquisition, preventive-maintenance alerts, remote connectivity, furnace parameter trending and temperature deviation alarms. Gasbarre will provide ongoing service and support for the company in Mexico.