Application of solder paste
Method of use (before opening) : before opening, the solder paste temperature should be raised to the ambient temperature (25±2℃) and the temperature recovery time should be about 3-4 hours. It is forbidden to use other heaters to make the temperature rise instantly.The stirring time of the mixer is 1 ~ 3 minutes, depending on the type of mixer.
Method of use (after opening)(2) according to the production speed, make up the amount of solder paste on the steel plate in a small number of times to maintain the quality of solder paste.(3) if the solder paste is used up on the same day, it shall not be placed together with the unused solder paste. It shall be stored in another container.It is recommended to use the solder paste within 24 hours after opening at room temperature.(4) on the next day, the newly opened solder paste should be used first, and the unused solder paste from the previous day should be mixed with the new solder paste in a ratio of 1:2, and added for use in a small number of times.(5) indoor temperature is generally controlled with 22 ~ 28℃, and humidity rh30-60% is the best operating environment.