How to use solder paste and rosin, steps! 50

If it can be solved with rosin, do not use solder paste, solder paste is corrosive, and it should be cleaned after soldering, otherwise it will not take long for the solder joints to be corroded. The correct way is: clean both sides of the solder, if there is an oxide layer with fine sandpaper or a knife and knife gently scrape off, first on the rosin, then on the tin, the two contact surfaces are pressed together with a soldering iron, after the solder is melted, remove the soldering iron, the soldering object is fixed, slightly blow to cool, and gently pull it after the tin liquid solidifies and cools, check whether the solder joint is firm, otherwise redo the above steps.

1.Hold the tip of the soldering iron close to the part and send the solder wire to the part.

2.Lift the tip of the iron upwards to form a cone, but don't place too much solder.

A clean surface will hang tin well, which is why solder paste.

In addition to rosin and other surfactants.

In addition, due to the corrosive components, the surface is thoroughly cleaned through slight corrosion, so that the solder can be hung up well. Rosin is just a simple surfactant, so that the solder can be fully wetted with the soldering surface.

Therefore, if you only use rosin, you can use sandpaper lightly or directly with a soldering iron tip between soldering.

Hang and rub a few times, then top the tin with rosin.

The soldering iron is dipped in rosin, then soldered, then soldered, and after leaving, the breath is used to cool the solder joints of the workpiece. Pull the workpiece by hand and check whether it is soldered.

If necessary, you can hang tin on both ends and solder it together. Hope.

Both are fluxes in electronic soldering

There are many types of fluxes, which can be roughly divided into three series: organic, inorganic and resin.

Resin flux is usually extracted from the secretion of trees, which is a natural product and has no corrosiveness, and rosin is the representative of this type of flux, so it is also called rosin flux. Since flux is usually used in conjunction with solder, it can be divided into soft flux and hard flux corresponding to solder. Commonly used in the assembly and maintenance of electronic products are rosin, rosin mixed flux, solder paste and hydrochloric acid and other soft fluxes, which should be selected according to different welding workpieces on different occasions.

When using flux, it must be applied appropriately according to the area size and surface state of the weldment, too small the amount will affect the welding quality, too much dosage, the flux residue will corrode the components or make the circuit board insulation performance worse.

You can choose different fluxes according to your actual situation.

What are the advantages and disadvantages of rosin and solder paste? Today is a long time to see.

Rosin is the flux, tin wire is the solder, tin wire is used to solder circuits, and rosin is used to assist soldering.

It is best to solder the circuit board with rosin, because rosin can increase the fluidity of the solder and is a flux.

Solder paste is only used when soldering iron parts and other items that are difficult to tin, and it can remove oxides on the metal surface, and it is a corrosive agent.

Generally, only rosin is used, and the function 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, you can directly insert the components that have been tin and solder them with rosin core solder wire, if it is a surface mount component, how to operate without solder paste filament? Remove the soldering iron before the rosin has evaporated, dip some more rosin if the solder is sticky, and do not move the component until the solder has solidified.

What are the advantages and disadvantages of rosin and solder paste? Today is a long time to see.

The landlord should use rosin in the solder paste to play a soldering role.

What are the advantages and disadvantages of rosin and solder paste? Today is a long time to see.