1. Preservation method
The storage of solder paste should be controlled in the environment of 1 - 10 C. The service life of solder paste is 6 months (without opening). Solder paste should not be placed in the sunshine.
2. Usage (before opening)
Before opening, the solder paste temperature should be raised to the ambient temperature (25 2 C) for about 3-4 hours, and other heaters should be prohibited to make the temperature rise instantaneously. After rewarming, the solder paste should be fully stirred, and the stirring time of using the mixer should be 1-3 minutes, depending on the type of mixer.
3. Use method (after opening)
1) Add about 2/3 of the solder paste to the steel mesh and try to keep the amount of solder paste no more than 1 can on the steel mesh.
2) In order to maintain the quality of solder paste, the amount of solder paste on steel net is supplemented by a small amount of solder paste added several times depending on the production speed.
3) The unused solder paste on that day should not be placed together with the unused solder paste. It should be stored in other containers. It is recommended that the solder paste be used up within 24 hours after opening at room temperature.
4) Use the newly opened solder paste every other day, mix the unused solder paste with the new solder paste in a ratio of 1:2, and add it in a small amount and many times.
5) After the solder paste is printed on the base plate, it is recommended that parts be placed in the reflow furnace within 4-6 hours to complete the dressing.
6) Change the line more than one hour, please scrape the solder paste from the steel plate before changing the line and cover the inside of the solder paste pot.
7) After 24 hours of continuous printing of solder paste, due to air dust and other pollution, in order to ensure product quality, please follow the "step 4" method.
8) In order to ensure the printing quality, it is recommended to wipe the openings on both sides of the steel plate manually every four hours.
9) Indoor temperature should be controlled at 22-28 C and humidity RH30-60% is the best working environment.
10) To wipe the wrong printed substrates, it is recommended to use industrial alcohol or cleaning agent.
