When soldering at home, rosin can be replaced with:
| How can you replace rosin when soldering? | Description of the analogue |
| Aspirin | It is the most affordable and easy-to-use replacement option. Acetylsalicylic acid is probably in every first aid kit. This is an acid that is not aggressive. An aqueous or alcoholic solution of aspirin effectively copes with oxidation. Soldering with such a solution is accompanied by the release of a strong unpleasant odor, so the room should be well ventilated. |
| Fat | An option that melts well, spreads, and protects the surface from oxidation. An important advantage is low cost. However, when heated, it provokes a specific odor. In addition, this is not the most convenient material for soldering, since it has a peculiar consistency. |
| Resin | Resin from trees is suitable. The resin melts well, spreads, and is an ideal option for tinning. Since it does not have any aggressive properties, it can be used for any type of soldering. However, this material is not as highly active as regular rosin. |
| Amber | Probably the best option for replacing rosin when soldering, since it has the most similar characteristics to it. However, amber will not always be appropriate, since it has a fairly high cost, so it is better to consider other options for replacement. |
| Rosin for musical instruments | This option may be relevant because it is a very good alternative to classic rosin for soldering. However, you need to take into account that, unlike ordinary rosin, it costs much more. |
When soldering various materials, rosin is used because it can improve the quality of work and also prevents the development of negative phenomena such as oxidative processes. Rosin is the most affordable and easy-to-use material.
However, there are times when this material is not at hand. In such cases, the question arises of what can replace rosin at home.
The essence of soldering acid
Soldering acid can be used to join surfaces of different materials by introducing molten material between the parts. It's called solder. It has a lower melting point than metal.
The solder should be evenly distributed over the surface of the elements and provide good adhesion to the base. After cooling, it hardens and provides an inextricable connection between the workpieces.
The effectiveness of the presented process depends on the cleanliness of the substrates on which soldering will be applied. Soldering acid is used to prepare the surface of parts. Without it, the process will not proceed satisfactorily, and the required result will not be achieved.
Signs
You can understand that periostitis has developed by the following symptoms:
- tooth pain;
- swelling of the gums;
- an abscess at the base of the diseased unit;
- increased pain when pressing on the affected area;
- swelling of the cheek;
- increased body temperature;
- swelling of the lymph nodes.
If these symptoms occur, you should make an appointment with the dentist as soon as possible. In the early stages, the problem can be eliminated quite easily and quickly. Delay is fraught with health-threatening complications.
What is soldering acid used for?
To perform its direct functions, the presented substance performs a number of actions. It initially cleans the surface of the workpiece from dirt and oxides. In addition to its main function, the acid prevents the appearance of traces of oxidation in the future on various types of parts.
By reducing the surface tension of the solder, soldering acid helps it spread more evenly over the surface. This leads to a reliable connection of parts.
For different metals, suitable types of soldering acid are used. It should also be taken into account that such a substance is a good conductor. Therefore, if it is undesirable for electric current to pass through this path, the electrical flow pattern should be calculated.
Security measures
Before you start soldering, you should make sure that the power cable is in good condition. The sting should not touch the reins or other objects. The soldering iron must always be placed on a stand. It is forbidden to touch its body; you can only take the tool by the handle.
Work place
Soldering is always done under normal general lighting (no worse than 500 lux); if it is necessary to create more comfortable conditions, a local lighting source is used.
Good ventilation should be ensured. The best results are obtained by a hood; in its absence, solder intermittently to ventilate the room from rosin vapors (every hour during intensive work).
Selecting a soldering iron by power
Solder using soldering irons of varying power. It is usually assumed that:
- low-power soldering irons (20 – 50 W) are convenient for working with electronics and allow you to solder thin wires;
- A 100-watt tool is used to solder layers of copper no more than 1 mm thick;
- 200 W or more allows you to solder such massive parts that initially require the use of powerful soldering irons.
The power of the device is easy to judge visually: a 50-watt soldering iron turns out to be slightly larger than a fountain pen, while a 200-watt soldering iron has a total length of approximately 35-40 cm.
Soldering iron for work
Before using it for the first time, remove any remaining factory grease from the housing. Their burnout leads to the appearance of smoke and an unpleasant odor. Therefore, the soldering iron is turned on through an extension cord, exposing it outside through the window for a quarter of an hour.
Then the soldering iron tip is forged with a hammer: compacting the copper increases service life. The tip of the sting is shaped:
- at an angle or cut - for spot work (an example is shown in Figure 5);
- knife-shaped - with such a sting several contacts are soldered simultaneously (typical for microcircuits);
- special - they are used to solder some types of radio components.
Before you start soldering, you should clean the tip from the oxide film. This procedure is carried out with fine-grained sandpaper or a velvet file, as well as chemically: immersion in rosin. The cleaned tip is tinned with solder.
If necessary, you can solder at the point with a powerful soldering iron. To do this, a copper wire with a diameter of 0.5 - 1 mm is wound onto its tip, using its free end to heat the solder.
Parts for soldering
They always solder in several stages. First, prepare the surface of the metal conductor:
Be sure to clean used wires.
The oxide film is removed with a file, sandpaper, or a knife blade. In the case of flexible wires, each wire is processed.
The insulation of the enameled wire is removed by dragging it along the surface of a PVC tube, to which it is pressed with a heated tip.
A sign of readiness is a uniformly shiny surface without any remaining oxide film.
They always solder with degreasing, i.e. wipe the surface with a lint-free cloth or napkin moistened with acetone or white spirit.
Types of soldering acid
To understand how to solder with soldering acid, you should consider its varieties. There are liquid, powder or paste fluxes (as soldering acid is sometimes called).
At home, soldering acid is most often used for soldering copper, silver, brass, nickel and their alloys - rosin. This substance is obtained from the resin of coniferous trees. This happens by evaporating the turpentine from it.
To solder cast iron, steel and iron, you will need an aqueous solution of zinc chloride. This soldering acid contains ZnCl. Zinc chloride is prepared by melting zinc metal in hydrochloric acid.
Orthophosphoric soldering acid is quite common. Its composition contains 1/3. This substance is fireproof. However, it should be stored strictly in accordance with the manufacturer's instructions.
Features of the development of periostitis in children and adults
In adults, the disease usually has vivid symptoms. Most often it is caused by bad habits and ignoring the rules of oral hygiene. The tissues surrounding the root become inflamed. Persistent pain forces a person to seek dental care.
In children, flux usually progresses with mild symptoms. This is due to the fact that in children the immune system reacts less actively to abnormal processes in the oral cavity. Even if the purulent “bump” does not hurt the child, a consultation with a dentist is still required.
Orthophosphoric acid
Another type of soldering agent is It has the formula H3PO4. It is used for alloying chromium and nickel.
However, it is not used in its pure form. Acid occupies only 32% of the solution. Another 6% is allocated to rosin.
Sometimes orthophosphoric soldering acid, the composition of which is diluted with zinc chloride, can have a mass content of the latter from 50% to 0.005%. The mass fraction of insoluble residue is 0.001%, and ammonia - no more than 0.5%. The maximum pH level for such a solution is 2.9%.
Under normal conditions, the substance looks like colorless crystals with hygroscopic characteristics.
It dissolves well in water. Therefore, if it accidentally gets into your eyes, you should rinse the mucous membranes for 10 minutes with running water.
Making at home
The substance presented is freely available for sale. However, craftsmen still wonder how to make soldering acid at home. This is quite easy to do if you have the appropriate chemicals.
To do this you will need zinc, in the proportion of 412 g Zn and 1 liter of HCl. Zinc is placed in a glass, porcelain or ceramic container. Then hydrochloric acid is added to the laboratory glassware. This should be done very carefully. Hydrochloric acid in the container should not exceed ¾ of its volume.
To understand how to make soldering acid, you should familiarize yourself with the chemical reaction. As a result, hydrogen will be formed (bubbles will come out). When this stops, the liquid will lighten and become clear. After this, it is poured into another container and tightly closed with a lid.
How to replace soldering acid
If you cannot find soldering acid at home or even the ingredients for its preparation, you can replace it with aspirin or You must work with such a flux in a well-ventilated area. When heated, aspirin releases caustic fumes, so the technology for using such a substance differs from the usual one.
To tinning the part, it is sprinkled with acetylsalicylic acid powder. Sometimes the wires are placed on a tablet and heated with a soldering iron.
When deciding what to replace soldering acid with, you should pay attention to VTS flux. It is made on the basis of VTS and reliably protects parts from corrosion, so it is often used in repair work.
Non-standard methods
If there is no rosin nearby for soldering, you can use material for rubbing bows.
It's better cleaned. All properties are saved. The cost of replacement will be significant. Savvy craftsmen who have solders with flux suggest soaking it in alcohol and waiting until the rosin has completely dissolved. It takes a little time.
They say that such an alcoholic extract can successfully replace rosin. The alcohol component will gradually evaporate. The solid component meets the requirements for fluxes.
When working with old equipment, you can replace rosin with residues in places of old soldering. You need to touch the wire and soldering iron there and make a connection. This method is acceptable for extreme situations with not very high requirements for seams.
What can replace rosin for soldering?
Depending on the manufacturer, substances differ in the method of application. This could be a dropper-shaped neck or a jar with a brush. If the product is not equipped with special means for applying it to the part, you can even use just a piece of paper rolled into a tube.
The part must be cleaned before applying acid. This is best done with a file or sandpaper. The application of a substance such as soldering acid requires serious attention. How to use it is necessarily indicated by the manufacturer in the instructions.
The substance should be evenly distributed throughout the part. At the end of the work, any flux is removed from the surface of the part. This is necessary to prevent accelerated oxidation of the surface of the workpiece and the solder itself.
You can remove acid using water or soda solution. Residues of VTS are washed off with acetone or ethyl alcohol. The soldering iron tip melts a little solder and transfers it to the surface.
Alcohol rosin flux
You can also make a homemade flux for soldering from rosin and ethyl alcohol. Here, rosin is first crushed to the finest state, and then dissolved in ethyl alcohol.
The finer you can crush the rosin, the faster it will dissolve. But the mixture will still need to sit for a few hours to fully combine. Although this process can be accelerated if the future flux is heated to 80° in a water bath in glass. Such dishes can then be washed as usual.
Precautionary measures
To avoid unpleasant incidents, you should carefully adhere to the rules for storing the substance presented. It should be stored in a tightly closed container, out of reach of sunlight, heat and children. The substance is stored at temperatures from -25°C to +35°C.
Soldering with soldering acid is carried out in a well-ventilated area. Before starting work, you must open all its windows wide. Even after completion of work, the room must be ventilated for at least 30 minutes.
During the soldering process, it is necessary to use protective equipment for the respiratory tract, eyes and skin of the hands. In case of accidental contact of the substance with the skin of your hands or eyes, you should thoroughly rinse the area with running water for a sufficiently long time.
If soldering acid gets on various surfaces, they should be cleaned with a soda solution, which is washed off with water after treatment.
Having become familiar with the essence of such a substance as soldering acid, you can safely use it in the process of repairing various equipment. Knowing its composition, as well as ways to replace acid at home, processing parts before soldering will not be difficult at all. This technology will help extend the longevity of the functioning of equipment and mechanisms of varying complexity. By performing work in accordance with safety regulations, you can not be afraid of unwanted incidents that could harm your health.
