jc: ""
Actually, 470 degrees F is the minimum: "recommended alloy temperature during wetting in air" p. 71 Figure. 3.8 'An engineering version of the tin-lead diagram' 'Solders and Soldering' Howard H. Manko. I don't recall the context of giving the temperature of solder, but I probably meant to say 370 degrees F for SN62-SN63 solder.
You would attack me for a typo? Well, it isn't the first time, I'm sure. ;-) ""No, I would not attack you for a typo.
You're losin it, John. Here, I'll refresh your memory...
You were discusssing a roll of solder that would not work properly, I believe you said it made "turds"., and that it was fun to play with. (don't worry, I won't go there...:-))
My response to you was this:
Quote by me:
""Seriously, though, I'm pretty sure you have either an oxide problem, or you're trying the wrong flux.Try some lead free flux from home depot. While it's certainly not good for electronics use, if it works, then it's more than likely an activation temp issue.
If you really wanted to, you could buy a tub of Nokorode 14300 R type flux..they were bought by rectorseal. I use it for all solder joints that require tin/silver temperatures. The 14300 is a 1.6 oz container, the 14330 is a 1 lb tub. I just bought 12 pounds of it, but I don't recommend the larger size for at home use, it'll go bad long before you use it up. But it has no halides.
http://www.rectorseal.com/productda...s/dselectro.htm Um, John...how is a roll of solder "fun"?
Cheers, John""
Copied verbatim from a post at DIY, minus the upside the face comment about Sy being older than me..:-)
And, here is your response:
JC: ""
Folks, I want to know how a spool of SN62 that has a melting point of 460 degrees F needs a special rosin.""
Note that you stated specifically that your spool of sn62 has a melting point of 460 F (yah, I incorrectly attributed 470 to you, oops my bad).
You did not say it was a recommended temperature, you stated that it was the melting temperature of your roll of sn62.
To which I then posted a list of all alloys which were near the 460 F melt temperature. None of which were sn62. Your response? Ksssshhhhh..radio silence.
Here's the link, your post is #65.
http://www.diyaudio.com/forums/showthread.php?s=&postid=968469#post968469
It only goes to reinforce what I've been saying to you. You come up like you know this stuff, tossing incorrect "material science" stuff here and there, without a solid understanding yourself. Anybody with any experience with soldering and solder material science, knows sn62 is not 460 F melt, that is a "sophomoric error" (only quotin ya, John). And, anyone who understood this topic would also know that the flux type will impact heavily, it's ability to cut through the oxides formed on the surfaces.
It's also time for you to get a new source of information, as what you are reading is waaaaay passe..outta date.
I could point you to some very good papers and process specifications on this stuff, but since I wrote them, I'm quite confident that you will ignore my advice..
The optimum temperature for soldering in air with a flux, is HEAVILY dependent on the flux formulation, the temperature of activation of the flux, the alloy melt temp, the base metal being soldered to, and the composition of the flux, be it water or rosin based.
Go to a flux manufacturer's website for more details, like Superior's, or just ask me..Hey, I might know...
John, it's not bad to not know...everybody's got their specialty..
Cheers, John
