What is the use of rosin in soldering, and how to use it exactly

The role of rosin in the welding process is: one. Remove slight oxidation from the surface of the welded object; Two.

It plays the role of welding aid in the welding process; Three. It can prevent corrosion and oxidation caused by the surface of the PCB board and the welded object in the air. There are two ways to use it:

One. dissolved in alcohol to make liquid flux preservative; Two. It can be used as a solid flux on its own.

Its function is mainly similar to solder paste, playing the role of flux, it is best to soak in alcohol solution and melt, and when using soldering, the solder will be dipped in rosin solution, and after the solder is melted with a soldering iron, the solder object will be hung with solder, and it can be soldered, such as soldering transistor manifolds, the faster the welding speed, the better.

The task of rosin is to clean and weld the surface you want to weld, the method is to hold a hot electric soldering iron in one hand, hold rosin in the other hand, heat the rosin and drop it on the place to be welded, and then heat the place with an electric soldering iron to clean the soldering surface, and contact the electric soldering iron with a solder wire to solder.

The main components of rosin are rosin acid and rosin anhydride, which are unsaturated compounds with greater activity. It is often used to formulate fluxes. When soldering, at high temperatures, rosin reacts with oxides on the metal surface to form resinate, which wets the solder with the metal surface and obtains ideal brazing.

Rosin is a flux that can be diluted with alcohol and applied or melted directly to the surface of the weldment.

Rosin can mainly play the role of connection, that is, when you solder, such as copper wire will not be stained with tin, at this time, electric welding, stained with a little rosin, at the junction can play a role in a firm connection.

Rosin is a flux that reduces the oxide layer on the surface of the solder, making it easier to coat tin.

1. Use a hot soldering iron to dip rosin in the soldering iron, dip it in solder, and loosen and solidify.

Rosin is an unclean thing that cleans the surface and is easily connected to tin melting.

In soldering, it is mainly soldering.

Hello, there is no rosin when soldering, the following materials can be used instead: 1. All kinds of solder paste; 2. Zinc chloride; 3. Dilute hydrochloric acid; 4. Vaseline. How it works:

1. Prepare electric soldering irons, tweezers, scissors, diagonal pliers, needle-nose pliers, solder, flux and other tools; 2. Tin the soldering iron and weldment, hold the solder in the left hand and the electric soldering iron in the right hand, and keep it in a solderable state at any time; 3. Use a soldering iron to heat the spare weldment, feed the solder, and melt the appropriate amount of solder; 4. Remove the solder, and when the solder flow covers the solder point, quickly remove the soldering iron.

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.

When to use rosin for welding?

When to use rosin for welding?

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

The melting point of the flux is lower than that of the solder, its specific gravity, viscosity and surface tension are smaller than that of the solder, the flux melts first during soldering, and soon flows into the solder and covers the surface of the solder, which plays the role of isolating the air to prevent oxidation on the metal surface, and can react with the oxide film on the surface of the solder and the welded metal at the high temperature of soldering to melt and restore the pure metal surface. The right solder at the time of soldering helps to create a satisfactory solder joint shape and can maintain the surface gloss of the solder joint.

The three main functions of flux:

Oxide film removal: The substance in the flux undergoes a reduction reaction, thereby removing the oxide film, and the reaction product becomes a suspended slag that floats on the surface of the solder.

Prevent oxidation: After the rosin melts, it floats on the surface of the solder to form an isolation layer to prevent oxidation of the solder surface.

Reduces surface tension and increases solder fluidity, which helps solder wet the weldment.

Rosin is a commonly used flux and plays the role of flux.

Intuitively, it can help the cohesion of solder joints, and the oxide film on the solder joints is clear, and there will be no burrs.

Try it and you'll know, I used a lot before, and now I use flux paste and rework soldering fluid.

Soldering circuit board due to the circuit board solder joints contact with air will oxidize, in the soldering need rosin as an auxiliary soldering, better tin to prevent oxidation.

1. Increase the smoothness of soldering, it can make the tin droplets quickly stick to the circuit board during soldering; Rosin also removes oxides from metal surfaces, assisting in the diffusion of tin.

2. In terms of solder joints, it can be used to connect parts without supporting mechanical force; coordinated heat dissipation; and the conduction of electricity.

3. You can give tin on the wire, because if you don't use rosin, it is difficult to give tin to the wire, first heat the soldering iron, then put the soldering iron in the rosin, take out the soldering iron, dip it in the tin and close it, and then put it in the rosin, and then put the wire to be tin in, so that it is much easier to put the tin.

4. Prevent oxidation, after it melts, it floats on the surface of the solder to form an isolation layer, thus preventing the oxidation of the solder surface.

When soldering circuits, rosin plays a very important role in the soldering process. Here are the roles of rosin in circuit soldering:

Cleaning effect: Rosin can clean oxides and dirt on the pin surface of circuit boards and soldering equipment. This ensures that the welded surface is clean, which improves the quality of the welded joint.

Reduces oxidation: During the welding process, the high temperature will oxidize the surface of the Zhaozheng metal, which will lead to a decrease in the quality of the welded joint. Rosin can decompose at high temperatures to produce hydrogen, which can react with oxides to form water, thereby reducing the effects of oxidation and improving the quality of welded joints.

Protective: Rosin can form a protective film during the welding process to protect the welded joint from the external environment, thereby improving the stability of the welded joint.

The rosin used in welding is a solid resin that melts when heated and plays several roles in the welding process:

1.Cleaning effect: Rosin can adsorb oxides and other impurities on the copper surface, thereby reducing air bubbles and contamination during soldering.

2.Prevent oxidation: Rosin can form a protective film during the welding process, preventing oxygen from oxidizing the copper surface, thereby protecting the welded joint.

3.Improves flowability: Rosin can lower the melting point of the solder, improving its flowability, making soldering easier.

It should be noted that rosin should not be used in moderation, too much rosin will cause a large amount of kiqina smoke and odor during welding, which is harmful to health.

Rosin can play the following role when soldering circuits:

Improve the reliability of welding: rosin can play the role of a flower in the welding process, help remove the oxidized celery source and contaminants on the surface of the welded joint, so that the welded joint and the pad form a good contact, and the crack loss improves the reliability of welding.

Promotes solder wettability: Rosin can reduce the surface tension of solder, making it easier to wet solder joints and pads. This helps to increase the contact area between the welded joint and the pad, making the weld stronger.

Prevent oxidation: Rosin can form a protective film during the welding process to prevent oxidation on the surface of the welded joint. This helps to reduce the impact of oxidation on weld quality and provides better electrical conductivity.

In order to make the solder joints stronger, it is necessary to brush a layer of rosin on the circuit board to increase the electrical connection between the solder joints.

In addition to increasing the electrical connection, rosin can also act as a lubricating agent, making it easier for the soldering iron to handle the stove cracking.

When soldering fibers, the soldering iron rubs against the solder joints, and rosin can reduce this friction and make soldering easier.