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 Soldering station certification class 
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Joined: Sun Aug 26, 2012 2:08 pm
Posts: 995
Location: Lacey, WA USA
I'll be working on a class to certify members for the soldering/desoldering area at OlyMEGA.

Purpose:
1. Prevent damage to the user
2. Prevent damage to the equipment
3. Proper soldering and desoldering practices

I'll be using a number of sources.

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Steve Greenfield AE7HD


Thu Jan 26, 2017 12:43 pm
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Joined: Sun Aug 26, 2012 2:08 pm
Posts: 995
Location: Lacey, WA USA
For the purposes of brevity, "soldering" will include any activity involving hot solder, whether it be adding, reflowing, or removing solder. A soldering pencil, hot air, soldering oven, desoldering, etc.

    Eye protection must be worn. This includes anyone closely observing. Solder bits can fly, rosin and flux will bubble and spit, small bits of wire can fly at high speed when cut. Wear glasses, safety glasses, goggles, or face shield while soldering or observing. While a set of goggles may be provided, it is up to each individual to be responsible for their own safety.

    Long pants and long sleeve clothing of natural fibers are highly recommended. Synthetic fibers may melt if hot solder hits them, or if a soldering iron is dropped. In addition, synthetic fibers tend to generate more static electricity than natural fibers.

    Rosin and flux fumes are irritants to your eyes and mucus membranes. A fan is provided to keep the smoke from soldering away from your face, but for it to work, you must use it. It won't fit under the stereo microscope when using it to solder, so a smaller fan that blows the fumes away must be used.

    Ensure there is adequate lighting. Small, portable lights may be aimed to light dark areas where necessary. The fume fan also has lighting built into it.

    Make sure that the item or equipment being soldered is de-energized. Turn off, remove batteries, unplug.

    Always place the soldering iron back in the holder when not soldering. Be aware of where the soldering iron is in relation to all wires to prevent melting or burning of insulation or equipment. Make sure no wires or objects are sitting on or in the soldering iron holder.

    Do not handle food or touch your face while soldering. While lead cannot be absorbed through your skin and it is not vaporized in soldering, it can get on your hands and transfer to food or drink. Wash your hands after soldering, or wear gloves and remove them after you are done handling solder.

    Never use the soldering iron to melt plastic or burn wood. It can create a very hard, difficult to clean black coating on the tip that resists wetting with solder. There are tools specifically to melt plastic and do woodburning, use them. The only exception is that enameled wire often has an insulation that is made to be melted off by the solder when you tin the end of the wire.

    Before soldering, wipe the tip on the damp sponge provided and then add a small amount of solder back to the tip. When you are done soldering, before placing the iron back in the holder, you should again wipe the tip and add some solder to it.

    Never, NEVER file or sand the soldering iron tip. It is a copper core that is plated with iron and nickel. If you grind away the plating, the copper will dissolve into the solder and become hollowed out. A damp sponge is provided (water bottle to keep it damp) as is a brass wool for more aggressive cleaning.

    For the digital temperature controlled iron, the temperature should be set at 320C for lead-tin soldering. At no time should the temperature ever be set higher than 420C.


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Steve Greenfield AE7HD


Thu Jan 26, 2017 1:14 pm
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Joined: Sun Aug 26, 2012 2:08 pm
Posts: 995
Location: Lacey, WA USA
http://www.riccardobevilacqua.com/SolderingSafety.pdf

http://safety.eng.cam.ac.uk/procedures/ ... ing-safety

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Steve Greenfield AE7HD


Thu Jan 26, 2017 1:16 pm
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