HASL Hot Air Leveling Machine for PCB tin coating work

1、Automatic temperature control system，automatic display;
2、Automatic pressure control system，not get fixed pressure，each work can't start;
3、The adjusting range of rising/falling speed and pressure is big,high efficiency;
4、Substrate Tin coating is uniform;Install emergency stop button.

HASL or hot air solder leveling is a type of finish used on printed circuit boards (PCBs).

The PCB is typically dipped into a bath of molten solder so that all exposed copper surfaces are covered by solder. Excess solder is removed by passing the PCB between hot air knives.

HASL (Hot Air Solder Leveling) is a metallic surface finishing technique, which is performed on the outermost layer of the PCB board to protect the exposed copper surfaces like tracks until the component placement and soldering is completed.

The HASL coating is composed of Solder with 63% Tin and 37% Lead, and during the assembly process, this coating gets dissolved with the soldering material.