What is the function of solder rosin and what is the difference between solder paste and rosin?

The flux effect will be better, and the tin climbing will be better

First, the nature is differentSolder paste: Solder paste is a new type of soldering material.

Rosin: Rosin is a species of oil tree resin in the pine family.

Second, the composition is differentSolder paste: a paste-like mixture formed by mixing solder powder, flux and other surfactants and thixotropic agents.

Rosin: Rosin contains a variety of chemical components such as rosin anhydride and kaempferol.

Third, the role is differentSolder paste: The function of solder paste is soldering, which can isolate the air to prevent oxidation, and increase capillary action, increase wettability, and prevent virtual soldering.

Rosin: It can be used in daily life, medicine, industrial decoration, and entertainment industries, such as flavors and soaps commonly used in life.

Hydrogenated rosin DXT-001 is a kind of resin hydrogenated products that can be used for welding. Solder paste is generally used for electronic products, soldering patches and other products.

But not too much, just a little bit, beginners will not be able to grasp the proportion, often soldering a solder, the tin point can not be large, not too small, look at the solder joints on the circuit board. Now they are all machine-welded boards, and some are manually repaired, and the places where the repair welding is relatively high current and high voltage are all used. Look at vintage electronics or vintage black-and-white televisions soldered by hand.

Not pretty, but sturdy. There is no open welding. In the late eighties, it was basically machine welding, also known as wave welding, which was fast and good, but there were more welds where the current was larger.

Solder paste is only used when soldering iron parts and other items that are difficult to get tin, it is corrosive, generally only rosin is used, the role of rosin is to precipitate oxides in the solder, protect the solder from oxidation, and increase the fluidity of the solder. Electronic components are generally good tin, if rust should be scraped first, put on the rosin with a soldering iron to scald, and then tin. After the circuit board is scratched, it can be directly inserted into the tinned components and soldered with rosin core solder wire.

Rosin acts as a flux in soldering and plays a role as a flux.

Solder using the rosin method:

1. Flux, dissolved in 25% rosin in 75% alcohol (weight ratio) as flux.

2. The specific method is to heat the electric soldering iron, and when the solder can just be melted, apply flux, and then evenly coat the soldering iron head with solder, so that the soldering iron tip eats a layer of tin evenly.

3. Soldering method, polish the pads and pins of the components with fine sandpaper and apply flux. After all the solder on the solder joint is melted and submerged in the component lead, the soldering iron tip is gently lifted up along the pins of the component to leave the solder joint.