Hagineering
Plastic
- Joined
- Jul 3, 2018
We are having an issue at my shop on a hot job with brazing a tube into a plate. The plate has a groove machined into it for the tube to fit into. The and channel have a 90° bend with a 2.0 radius. The issue we are having is the tube melting before we can get the filler rod to flow. Especially around the radius where the wall is thinner from forming. We are using a torch to heat the assembly from underneath. the plate is 0.5 thick and tube is 0.375 od x .035 wall. The filler rod we used is Hobart Brazing Rods, Model# 770206 (this has a 700°F melting temp). Our welder suggested getting a filler material in a sheet rather than a rod but I am not having any luck tracking some down. Any suggestions are welcome.