storage of  solder paste
Storage temperature and duration
5 ~ 10 ℃: 6 months from the date of production within the (sealed)
20 ℃: production within 3 months (sealed)
After opening: 10 days (sealed)
The storage of new solder paste should be put in freezer after purchasing the custody, adopted the concept of using FIFO
Paste  after opening the preservation of the paste after use to clean and no  pollution of the air must be properly bottled, to be sealed, stored in  cold storage, can not be saved and a new mixed paste, the paste after  opening shelf life is 3 days, more than Please do scrap shelf to ensure production quality
Note  inadvertently stick hands immediately with soap, rinse with water, and  materials hand rub, scrub a small amount of alcohol available residues
Paste to use
Back  to the temperature of solder paste after removing from the Cold  Storage, is not immediately Kaifeng, in order to prevent fogging, must  be placed at room temperature (2 ~ 4 hours) to the solder paste to warm  to 25 ℃ Kaifeng be used, if equipped with power front paste mixer (LF-180A) can be no return to warm, stirring 3-5 minutes (not too long)
Stir  the solder paste into printing press to be fully mixed, so that flux and  solder powder can be uniformly mixed, a mixer for about 3 to 5 minutes,  depending on the manner and speed with which the stirring
Inputs inputs are not attached to the blade parts to paste into the extent of
Printing conditions

Scraper Shore hardness of 80 to 90 degrees stencil or screen material of stainless steel template
Material thickness of rubber or stainless steel mesh stainless steel template → General 0.15 ~ 0.25 thick
Blade speed 10 ~ 150mm/sec ambient temperature: 25 ± 5 ℃
Humidity: 40 ~ 60% RH
Blade angle of 60 ~ 90 ° air damper will destroy the adhesive properties of solder paste



More on solder paste (solder paste Taiwan macro Bridge) to use:

Control the storage and proper use of <a href="http://www.solder-wire.com/">solder _fcksavedurl=""http://www.solder-wire.com/">solder" paste</a> method.
First, the use of
SMT workshop.
Second, the solder paste storage
1. Solder paste is valid: sealed at 0 ℃ ~ 10 ℃, the period of 6 months. (Note: New Paste in place
A good state before the label affixed to the refrigerator, out of date and complete control of solder paste form.
2. Unsealed after the<a href="http://www.solder-wire.com/"> solder paste</a>, place no longer than 24 hours.
3.  The end of production or for any reason to stop printing, solder paste  stencil board placed the remaining time must not exceed 1 hour.
4.  To stop printing no longer used, solder paste should be left alone with  a clean bottle, sealed, refrigerated, remaining only with solder paste
Continued use of time, then the remaining time will be used for scrap.
Third, the solder paste to use:
1.  Back to temperature: the original bottle from the refrigerator after  removing solder paste at room temperature 20 ℃ ~ 25 ℃ storage time when  not less than 4 hours to charge
Points  back to the temperature of the room for the degree, and the state of  the solder paste labels on bottles of thawing time stated in the paper,  and fill out the paste out of tube
Tabulation.
2. Mixing: Manual: the same direction with the flat shovel mixing 5 to 10 minutes to solder alloy powder and mix well prevail.
LF-180A automatic mixers: If mixer speed to 1200 rev / time-sharing, it would take 2 to 3 minutes stirring to mix well prevail

3. Use of the environment
Temperature and humidity range: 20 ℃ ~ 25 ℃ 45% ~ 75%
4. Use of inputs:
LTCL-3088  semi-automatic printing machine, stencil printing solder paste into the  cylindrical body rolling, 1 ~ 1.5cm in diameter can be.
5. Use Policy:
1. Using paste solder paste to give priority to the use of recycled and can only be used once, and then do the remaining scrap.
2.  Solder paste using the principle: first use of advanced (using the  first time the remaining solder paste must be mixed with the new, old  and new paste
Mixing ratio of at least 1:1 (a higher percentage of new solder paste as well, and is the same batch of the same model).
6. Note:
Refrigerator must be 24 hours electricity, strictly control the temperature 0 ℃ ~ 10 ℃.