Does anyone know the function and application method of solder paste? - Let's talk about it, solder paste manufacturers

Solder paste is a creamy mixture made by thoroughly blending tin powder, flux and other additives. It can isolate air to prevent oxidation, increase capillary action, enhance wettability and prevent false soldering. Stir the solder paste thoroughly with a stirring knife. If the cap breaks, the solder paste will absorb moisture and turn into tin blocks, which will cause it to deteriorate. Now, the solder paste manufacturer will explain some functions and methods:

Solder pasteWhat is its function?

The function of solder paste is to assist in soldering,It can isolate air to prevent oxidation, increase capillary action, enhance wettability, prevent condensation, and has a certain degree of viscosity. At room temperature, it has a certain degree of viscosity. When we use solder paste, we should take it out of the refrigerator.

Not lower than4Hours: At room temperature20The placement time on the left and right shall not be less than4Wait for an hour until it has fully warmed up before opening the lid.

Stir the solder paste: We use a stirring knife to stir the solder paste thoroughly. If the cap breaks, the solder paste will absorb moisture and turn into tin blocks, then the solder paste will deteriorate and become bad.

The main functions in solder paste:

Solder powder, also known as tin powder, is mainly composed of tin-lead, tin-bismuth, and tin-silver-copper alloys, with a general proportion ofSN63/PB37,SN42BI58,SN96.5CU0.5AG3.0andSN99.7CU0.7AG0.. In summary, the relevant characteristics and quality requirements of tin powder are as follows:

AThe particle morphology of tin powder has a significant impact on the working performance of solder paste:

For solder paste, it is required that the size distribution of solder powder particles be uniform and the shape of the solder powder particles be relatively regular. If these two requirements are not met, it is very likely to affect the printing, dispensing and soldering effects of the solder paste during its use.

BThe ratio of solder powder to flux in various solder pastes is also not the same. When choosing solder paste, different solder pastes should be selected based on the products to be produced, the production process, the precision of the components to be soldered, and the requirements for the soldering effect, etc.

Shenzhen JJY Industrial Technology Co., Ltd. mainly operates:LEDType solder paste, lead-containing solder paste, lead-containing silver solder paste, stainless steel plate type solder pasteSMTSolder paste and wire manufacturers of type solder paste, lead-free flux paste, no-clean solder wire, lead-free solder wire, leaded solder wire, lead-free and leaded solder rods, wave solder rods, automatic solder wires, etc