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I have a 45 watt weller iron in a varialble temperature base. At full heat, the tips turn a blue color. Attempting to keep a tinned coating on the tip doesn't work. At 80% full temperature, things are better, but the tips seem to become porous after little use. I'm using radio shack silver bearing solder.
Follow Ups:
The temperature is too high. Turn it down. If the adjustment has a temp scale set in the 600 to 700 degrees Fahrenheit range (315 to 370 Centigrade). If there is no scale start by setting it just hot enough to melt the solder, then turn it up in small increments until you get a good solder joint on the work in a short time. The correct temp depends on what you are soldering, the tip size and shape, the solder alloy and the flux used. Experiment a bit.
What is the highest temp on the soldering station? It might be that you're using too high a temp for the work that you're doing and the materials you're using. Does the insulation on the wire melt easily when you're using the iron? That would be an indication of too much heat. I can't remember what heat I use for general solder work, and I'm not at home at the moment, but I think it's in the range 500f. I'm sure someone else can give you better info on range of heat that's optimal.As an aside I also use Radioshack silver solder and I've found tip cleaner paste to be an invaluable asset when soldering; clean joints and faster solder melt.
thanks for the helpful info.
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