How to store low-temperature solder paste? JJY solder paste manufacturer tells you

Low-temperature solder pasteHow to store it? JJY Solder Paste Manufacturer tells you.  Solder paste is accompaniedSMTA new type of welding material that emerged as The Times require. Solder paste is a complex system, which is a creamy mixture formed by mixing solder powder, flux and other additives.Because Solder paste is a chemical product and is stored in a cold storage(5~10℃ )It can reduce activity, increase service life. Avoid placing it in high-temperature areas as it may cause the solder paste to deteriorate. You can take a look at the general operation:

1.Storage method

Solder paste should be stored in the freezer,Its temperature should be adjusted to0℃-10℃The application time of unopened solder paste is6In a month, the solder paste opened was24When it is small, it should not be placed in a spot exposed to sunlight.

2.Operation method before opening

Before opening, the temperature of the solder paste must be warmed up to the temperature of the natural application environment.25±2℃), the heating time is approximately3-4Hours, and it is strictly prohibited to use other electric heaters to increase the temperature in an instant. After heating up, it must be stirred thoroughly. The stirring time for using a mixer is1-3Minutes, depending on the model of the mixer.

3.Operation method after opening

1)After the script is made, make the solder paste2/3The amount should be added to the steel plate and maintained as much as possible without exceeding it1The volume of the tank is measured on the steel plate.

2)Depending on the production and manufacturing rate, the amount of solder paste on the steel plate should be supplemented in small amounts and frequently to maintain the quality of the solder paste.

3)The unused solder paste of the day should not be placed together with the unused solder paste. It should be stored separately in other containers. The solder paste should be prepared at room temperature after opening24Use it up within hours.

4)When applying it the next day, prioritize the use of newly opened solder paste and mix the unused solder paste from the previous day with the new solder paste1:2Stir and mix the ingredients in a certain proportion, and apply it in small amounts with frequent meals.

5)The cable change exceeded the limit.1For hours above, please lift the solder paste from the steel plate and seal it in the solder paste can before changing the wire.

6)Solder paste is continuously packaged and printed24After a few hours, due to environmental pollution such as gas and smoke dust, to ensure product quality, please follow the process4The way .

7)For guarantee Packaging printing quality proposal every4The openings on both sides of the steel plate are wiped manually every hour.

8)Please control the temperature in the room22-28℃Environmental humidityRH30-60%The most suitable natural working environment. When applying solder paste, it is essential to prioritize the use of recycled solder paste and use it only once. Any excess should be reimbursed. Solder paste application standard: Use the better ones first (When using the remaining solder paste from the first application, it needs to be mixed with new solder paste, and the proportion of new and old solder paste mixed should be the smallest.1:1It is better if the proportion of new solder paste is large and it is of the same batch number.

High and low temperaturesSolder pasteThe key difference lies in this "temperature", with some integrationicorPCBSurface mount electronic devices are prone to damage at high temperatures, so it is necessary to use low-temperature solder paste for soldering, which can have a protective effect. Therefore, low-temperature solder paste is very sensitiveLEDIt is popular in the field, and its composition is mostly tin-bismuth aluminum alloy, mainly used for the welding of heat pipe radiator modules.LEDElectric welding, high-frequency welding machines, etc.