Awesome, great info. Paintwork is not my strong suit, think I can be trusted on this job, hopefully
Overflow Tank Painted or Unpainted?
- Thread starter CSteve
- Start date
Yeah I remember that one. Agreed on the paint. I have had three brass tanks and all had steel brackets.
Yes, I did that on another project and that is exactly what happened !
From http://www.practicalmachinist.com/vb/general/poweder-coating-soldered-parts-253639/
Depending on the solder alloy you use, there are several options. 60/40 (60% lead, 40% tin) melts at 460F, and old fashioned 50/50 plumber's solder melts at 418F. If there are hot spots in the oven, you may have problems, though. There are other solder alloys out there - check with Kester Co. for their recommendations.
Unless they specify soft solder, maybe you want to think about hard solder - also called silver solder - it's available from welding suppliers at a higher price than plumber's solder, but you know it won't have problems in the oven. Considering the cost of fixing a mess up, it might be a lot cheaper...
Some solders even though they don't melt can seriously weaken at exposure to high temps for a sustained time. Just becomes crystalline and a hell of a lot weaker, some of the lead free solders suffer badly from this. As above though a higher melting point lead based solder should be fine. Powder coating though can generaly be cured at a slightly lower temp just for a bit longer, a lot of powders will cross link just fine at 180C (356°F) instead of 200C (392°F) just takes about another 5 minutes of oven time. You can even get some powders that will cure just fine at a little over 150C (302°F), again they just take a bit longer.
Unless they specify soft solder, maybe you want to think about hard solder - also called silver solder - it's available from welding suppliers at a higher price than plumber's solder, but you know it won't have problems in the oven. Considering the cost of fixing a mess up, it might be a lot cheaper...
Some solders even though they don't melt can seriously weaken at exposure to high temps for a sustained time. Just becomes crystalline and a hell of a lot weaker, some of the lead free solders suffer badly from this. As above though a higher melting point lead based solder should be fine. Powder coating though can generaly be cured at a slightly lower temp just for a bit longer, a lot of powders will cross link just fine at 180C (356°F) instead of 200C (392°F) just takes about another 5 minutes of oven time. You can even get some powders that will cure just fine at a little over 150C (302°F), again they just take a bit longer.