Proper use of solder paste
Release time:
2021-11-12 11:01
1. Basic principles of the use and storage of solder paste:
The basic principle is to have as little contact with the air as possible, the less the better. After the welding paste and air contact for a long time, it will cause the oxidation of the welding paste and the proportion of the flux. The result is that the solder paste appears hard, hard, refractory and produces a large number of tin balls.
Two: Precautions for multiple use of a bottle of solder paste
1: The opening time should be as short as possible. The opening time should be as short as possible. After taking out enough solder paste on duty, the inner cover should be covered immediately. Do not take little and use little, open the lid frequently or leave the lid open at all times.
2: After the cover is removed, the inner cover is immediately covered, and the pressure is exerted to squeeze out all the air between the cover and the solder paste, so that the inner cover is in close contact with the solder paste. Make sure that the inner cover is firmly pressed, and then screw on the outer large cover.
3: The removed solder paste should be printed as soon as possible. The removed solder paste should be printed as soon as possible. The printing work should be continuous without pause, and all the PCB boards to be processed in one breath should be printed and placed flat on the workbench waiting for the table attachment components. Don't print and stop.
4: After all printing is completed, the remaining solder paste should be recycled into a special recycling bottle as soon as possible, and as precautions 2, keep it isolated from the air. Never put leftover paste back into an unused paste bottle! Therefore, when using solder paste, we should try to accurately estimate the amount of solder paste used on duty, and how much to take.
5: If there is a problem with the treatment of the solder paste surface crust, hardening, do not stir! Be sure to remove the hard skin and hard block, and the rest of the solder paste should be tested before formal use to see how the trial effect is, if not, it can only be scrapped.
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