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    Tin lead solders wire: Importance of Melting Point in Soldering


    The tin lead solder wire quickly oxidizes and burns, interfering with normal operation. But, firstly, the heat transfer of a high-quality copper tip is much better than that of a “non-combustible” tip, and secondly, it can be safely cleaned with sandpaper or even given any shape with a file.

    Tin lead solders wire

    That is, if it burned out and dents formed on the surface and the shape somehow deteriorated, it can be easily restored to its original one.

    What is solder?

    This type of connection of parts such as soldering is widely applicable in various areas of our time; it is used both at industrial facilities and at home in our own workshops. Thanks to this type of repair, you can fix a refrigerator, TV, computer - the connection is strong and reliable. This, of course, requires experience, as well as a good soldering iron and good solders and fluxes.

    Solders and fluxes are selected based on the materials of the parts to be joined, for example, a flux suitable for aluminum is not suitable for tin lead solder wire.

    Rules during tin lead solder wire

    When performing soldering work, it is necessary that the solder does not spoil the part or melt the insulation during heating. In addition, it must fit well on the parts and, at the same time, provide a high-quality connection. Some still trace gloss, which means that the soldering is done in accordance with all the rules and regulations.

    Forms of soldering

    Solder can also be produced in the following forms:

    • Granules
    • Powders
    • Rods
    • Foil
    • Solder paste

    How fluxes are designed?

    Fluxes are designed to prevent the formation of a film from the surfaces of the product and Tin lead solder wire. The melting point of the solder is higher than that of the flux. They can be solid, liquid, as well as powder and paste.

    Types of fluxes

    The types of fluxes for soldering are diverse: they can be different not only in terms of their state of aggregation, but also in composition, in action, in solvent, etc. Fluxes are surfactants and after the products are in contact, the remaining unused flux comes out and begins to evaporate. Previously, only rosin was used, because nothing else was invented.

    What is disadvantage of using rosin?


    The disadvantage of rosin is that when exposed to high temperatures, the metal was removed along with the metal oxide. In addition, it is not easy to clean the rosin from the board; this can be done only with alcohol-containing solutions or with a solvent. Firstly, it was not aesthetically pleasing, and secondly, it was harmful.

    How we can choose flux with tin lead solder wire?

    Now the modern market has expanded its range so much that you can choose a flux for every taste: to wash it off without the use of aggressive liquids, and so as not to destroy the sting, and of course to ensure the high quality of the Tin lead solder wire and work performed.

    Solder types: how to choose the right one?

    First, let's find out what kind of solders are in general. Their main classification divides them into:

    Ø Soft 

    It is designed for soldering parts at relatively low temperatures. Fusion occurs due to spreading, the solder particles are connected with the particles of the elements to be soldered, because of this, a very strong connection is formed, which, moreover, has good electrical conductivity. The melting points of this type of solder are about 400 degrees, sometimes more.

    Which metals are suitable for this?

    They are suitable for soldering tin, lead and tin lead solder wire. With an increase in the composition of the tin solder, the melting point decreases. In addition to the main components, the addition of other substances is permissible: cadmium, potassium, antimony. The addition of these chemicals provides new properties and also saves on tin.

    Ø Solid 

    The temperature at which these solders melt is high. They are suitable for soldering work on stainless steel, copper and brass products. These include the copper-zinc type, silver, copper-phosphorus.

    Tin lead solders wire 2021

    A huge important role lies precisely with solid types of solders, because without them there would not be a huge amount of global industrial work performed - here and pipelines, and shipbuilding, and the automotive industry. And of course, hard solders are also needed for small jobs.

    Solder melting point: tin lead solder wire

    This characteristic is the second most important, along with wettability. The choice of solder should be made so that it begins to melt before the part being worked on. It happens that solders as Tin lead solder wire from different manufacturers have the same composition, but the heating temperature is different. If the wettability index can be improved with a flux, then nothing like this can be done.

    What is the importance of melting point during soldering?

    The convenience of soldering depends on how easily the solder melts. In addition, such characteristics as hardness, electrical conductivity, elasticity are also taken into account, but they are not always important. If the products are planned to be exposed to loads, then of course in these cases elasticity and strength will play a role, but this is mainly applicable to the soldering of pipelines.

    How solder can be chosen?

    Of course, the classification of solders into hard and soft is generally applicable, but this is not the indicator that affects the choice. The melting point is precisely the parameter that is paid attention to in the first place, and then the solder is studied by its composition, knowing what properties this or that element gives to the solder kike Tin lead solder wire.

    What do you mean by melting point?

    When referring to the melting point, there are two meanings. The first value is the temperature at which the melting process of low-melting components begins, and the second is the temperature value when the alloy takes on a liquid state.

    What is crystallization interval?

    The difference between these values ​​is called the crystallization interval. In the event that the place where the soldering work is carried out is within this interval, then in no case any loads should be applied to this part, because the structure of the solder will collapse. This connection will be very fragile and unreliable.

    In addition, everyone who is engaged in soldering work or everyone who will do it must fill out one simple rule: until the solder is completely crystallized, in no case should the slightest effect be exerted on the connection of the products.

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