Q:Using a 35W constant temperature electric iron, heated iron head black, with rosin, then solder, solder coating is not on, have the ball dropped, where operation mistake, and ask whether the new iron head sanded ah?

The new iron head needs polishing.

Q:Probably is that when the need to frequently go to a variety of audio and video (such as welding head, VGA head lotus head, chuck and so on), it is necessary to use the electric iron and solder wire, and later at the site of welding, could not take welding tools, so that individuals need only electric iron and solder wire is enough.As for the electric iron, my personal preference is to buy the kind of adjustable temperature, solder wire I don't know what kind of good, so, I would like to ask is: temperature adjustable electric iron what brand of good price; I see the solder wire line has said that with the lead, also does not contain lead the diameter is from 0.3mm---1.0mm to see so much, and size of solder wire, containing lead, which brand line is good?

If the welding leader, with about 1.0mm Xi, a bit better.The best use of lead-free solder containing silver, resistivity of solder joints are smaller, the only drawback is that as a lead solder and relatively bright melting point will be a little higher, about 217 degrees Celsius, the general lead is about 187 degrees Celsius.If it contains silver, it is recommended to use thousands of columns (Japanese goods, but the quality is good, you can exchange domestic brands and other brands).Adjustable iron can buy homemade white light, it must be recommended to use 1321 import core, so that power will be greater, the use of time and the welding of the ground will be better. Individuals now use their own, only bought 1321 of the handle.

Q:The hand is ironed by electric iron, can you leave scar, want a few days to be able to grow well?

There are scars. It takes only a week to heal. It takes two months to make the scar go away.

Q:The soldering circuit is particularly vulnerable to soldering ironThe oil has no stickinessWhat can be done quickly and effectively?

The oxide layer on the weld surface must be removed, and then solder with a resin or solder paste. Tin plated on the weld surface, facing the two welded surface, and then solder the solder and rosin with the soldering iron.

Q:Who knows how to solder two coins together? Either the front or the side. I haven't solder it for days, thank you

Coated with solder paste, welding can be, pay attention to use good solder paste, with high-power electric soldering iron, welding time a little longer, in fact, very easy to succeed, because I have welded

Q:W I say is that with the copper iron head, iron head has nothing to do with the heating core (that is popular with the large copper needle)

The greater the power of the iron, the greater the heat, the higher the temperature of the iron head. General transistors, integrated circuits, electronic components welding, selection of 20W internal heating type electric iron enough, power is too large, easy to burn components, because the diode, transistor junction temperature of more than 200 degrees will burn. Generally speaking, the choice of electric iron is the choice of electric iron power. The power of the soldering iron shall be determined by the size of the welding point, the area of the solder joint is large, and the heat dissipation rate of the solder joint is also fast, so the power of the electric iron to be selected should be greater. The power of the general electric iron is 20W, 25W, 30W, 35W, 50W, etc..

Q:What if there is no electric iron and the wires are to be welded to the circuit board?

If the solder joint is little, a sharp screwdriver can be used to set it on fire. After heating, the solder can be melted

Q:How do I remove the whole part from the circuit board? How about the electric iron?

Tin pot is the best way! Homemade tin pot is troublesome! Buy a ready-made also hundreds of dollars! The most expensive but only a little more than 1!

Q:I'm looking for an electric iron like a pair of pliers. Used to seal 10mm vials. The pliers head can be heated. Both sides can be heated at one end. This is to buy or need to make their own? If know to help me out of ideas? See if there's any other way It's a small bottle like eye drops. Seal the top. I do not know is the main production factory of eye drops. How do they seal it?.

Special plastic sealing machine for sale,

Q:Why does that happen? Electric irons sometimes come alive, sometimes not.

This is caused by the leakage of the heating coil in the electric iron.