The Solder Wire is composed of two parts: tin alloy and additives. The alloy components are tin-lead and lead-free additives, and are evenly poured into the middle of the tin alloy. The basic condition of Solder wire welding is to first melt the solder wire and change the state of the solder wire from solid to liquid to complete the Soldering process. Therefore, the role of solder wire is great. What is the melting point of the solder wire?
Melting point of solder wire
Commonly used solder wires are divided into lead solder wire and Lead-Free Solder Wire. Different solder wires have different melting points because of different materials.
1. The melting point of Leaded Solder Wire:
(1) The melting point of 63/37 solder wire is 183 ℃;
(2) The melting point of 60/40 solder wire is 185 ℃ -190 ℃;
(3) The melting point of 55/45 solder wire is 187 ℃ -202 ℃;
(4) The melting point of 50/50 solder wire is 190 ℃ -216 ℃;
(5) The melting point of 45/55 solder wire is 192 ℃ -227 ℃;
(6) The melting point of 40/60 solder wire is 194 ℃ -238 ℃;
(7) The melting point of 35/65 solder wire is 198 ℃ -247 ℃;
(8) The melting point of 30/70 solder wire is 202 ℃ -256 ℃.
2. Melting point of lead-free solder wire:
(1) The melting point of Sn-Cu-Ni solder wire is 225 ℃ -227 ℃;
(2) The melting point of Sn-Cu-Ag solder wire is 211 ℃ -219 ℃;
(3) The melting point of Sn-Bi-Ag solder wire is 205 ℃ -208 ℃;
(4) The melting point of Sn-Zn solder wire is 117 ℃ -119 ℃;
(5) The melting point of Sn-Cu solder wire is 220 ℃ -222 ℃;
(6) The melting point of Sn-Ag solder wire is 221 ℃.
The role of solder wire
The solder wire used for manual electronic component welding is composed of two parts: tin alloy and additives. During electronic welding, the solder wire is combined with the electric soldering iron. The high-quality electric soldering iron provides stable and continuous heat of fusion. The solder wire is used as a filler The metal is added to the surface and gaps of the original electronic device. The fixed electronic device becomes the main component of soldering. The composition of the solder wire is inseparable from the quality of the solder wire, which will affect the chemical and mechanical properties and physical properties of the solder wire. Solder wire without additives is not capable of soldering electronic components because it does not have wettability and expandability. The welding process will produce splashes and the formation of solder joints is not good. The performance of additives developed for a long time affects the performance of solder wire welding.
The above is about the melting point of solder wire and its role. I believe that through the above content, you have a more specific understanding of the melting point of the solder wire. Solder wire is a tin alloy wire with a certain length and diameter. It can be used in conjunction with an electric soldering iron or laser in the welding of electronic components.
