Roydm
This question stems from your April 12, 2008 inquiry about electrical immersion heaters having a NEMA 4 terminal box that the manufacturer claims to be suitable for a Class 1 Div. 2.
I am faced with the same question. What did you end up doing?
Several Carpenter 20(Alloy 20)tubes are to be welded to a 316L stainless steel raised face pipe flange.
This is basically a P45 to a P8 weld.
Weld material for the 316L material is SFA-5.9 ER316L.
Weld material for Carpenter 20 is SFA 5.9 ER320LR.
What weld material should be used when...
IRstuff,
The 2"thick heated plate is steel SA105 (SA105 is the steel used for making "pipe flanges"). The enclosure is made of low carbon steel SA-36.
I am looking for an estimated "high temperature" inside the enclosure.
LuckyHobo
stanlsimon,
Attached is a sketch of the heated enclosure.
LuckyHobohttp://files.engineering.com/getfile.aspx?folder=d66f6b6c-5bf7-49c7-b96c-f9afd1203f57&file=Enclosure.pdf
stanlsimon,
The 24"ID x 5" tall X 1/2" thick steel enclosure is welded to side #2 of the heated 2" thk. steel plate. There is stagnant air inside the steel enclosure but there is no airspace between the metal enclosure and the 2" thk. plate. The is a 125 finish on the plates.
A flat 24" OD x 2" thk. steel surface is heated to and maintains a 400F temp. on side #1.
On the opposite side (side #2) is a 24"ID x 5" tall x 1/2" thk. steel enclosure. The enclosure has a 1/2" thk. steel cover.
I need to know the estimated temperature inside this steel enclosure.
The...
