Post by coldspaces on Jan 1, 2021 16:42:22 GMT
Since most of the enameled evaporators were on the DR machines I am posting here. I will put what ever info and links I find on the subject here.
I will start with this GE patent on making their nitrogen mix for nitrogen brazing. I learned here that the braze was copper and melted at about 2000F
"The particular furnace 6 illustrated in the drawing comprises a porous alundum tube 18 about which is wrapped a molybdenum resistor 19 through which electric current is passed from a suitable source, not shown, to generate the necessary heat within the tube which when using copper as the brazing material should be about 1100 C."
patents.google.com/patent/US1839185A/en?q=general+electric&q=hydrogen+brazing&before=priority:19340101&after=priority:19280101
I will start with this GE patent on making their nitrogen mix for nitrogen brazing. I learned here that the braze was copper and melted at about 2000F
"The particular furnace 6 illustrated in the drawing comprises a porous alundum tube 18 about which is wrapped a molybdenum resistor 19 through which electric current is passed from a suitable source, not shown, to generate the necessary heat within the tube which when using copper as the brazing material should be about 1100 C."
patents.google.com/patent/US1839185A/en?q=general+electric&q=hydrogen+brazing&before=priority:19340101&after=priority:19280101
