18kw the small electric welding machine changes the original function of the spot welder. It needs more thick wire to go around the secondary coil
The secondary coil of the transformer is about 1.6-1.8mm in diameter
With 2.5--4 mm or so iron wire, secondary coil with copper sheet folded into 1 cm thick, 4 cm wide, with good insulation material, made after, installation and use.Mainly according to the welding material, thickness, material, the distance between the two welding points to determine.The greater the thickness, the greater the current and the greater the line;To the current high melting point material, conductive good, line to rough;The distance between the two welding points is close and the line should be rough.The closer the primary to the secondary, the smaller the leakage and the greater the current. If the secondary winding in the primary current (large short-circuit current) can be leakage of small welding characteristics is not soft, like ordinary transformer output of sixty volts, but also when the welding characteristics, not good, not good.The number of turns on the column at the secondary; the greater the current. Want to increase the current, the secondary to the primary side here to reverse point, the total number of turns unchanged, plus a fan. Plus secondary turns can be, but the output voltage is not too high (<70V), the current is large, may not be easy to use
There is the relationship between the thickness of the material, thick line with you to welding materials, two welding points in the distance, the more the thickness of the current line, bigger current to high melting point materials, conductive good, line to rough, between the two welding point distance also, line to rough. Previously used one, welding 2.5--4 mm or so wire, secondary coil with copper sheet folded into 1 cm thick, 4 cm wide, with good insulation material made.
