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Welding materials and work with them.

 

Image 3 Welding electrodes and wires provide electrical power supply in the welding zone heating. Melting-coated electrodes, flux cored wire and activated, the protective flux for arc welding contain special ingredients that can be designed to protect the metal from the air, maintaining the stability of the welding process, obtain the required chemical composition of weld metal, etc. Filler rod is introduced into the weld during welding.

The main role of inert gas - providing gas protection of the molten metal from the air. By the protective gases include inert (argon, helium and mixtures thereof) and active gases (carbon dioxide and mixtures thereof). Inert gases do not enter into chemical reactions with the metal and it practically does not dissolve. Active gases enter into chemical reactions with the metal or dissolved in it.

Flammable gases and gases that support combustion of the gas used in welding and cutting. These include acetylene, propane-butane mixture, methylacetylene-allene fraction (IRF), hydrogen and oxygen supports combustion.

Ceramic linings are used for high-quality seam formation and reverse roll.
Welding materials (electrodes, wires, filler rods) are also classified by type of welded steel and metals for welding carbon steels, nikzolegirovannyh steels, stainless steels, aluminum, copper, iron, etc.

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Surface preparation for work.
polerglavThe process of preparing various surfaces and bringing the material to the necessary standard, a very important stage of the process. And is used in almost all fields and professions: in the manufacture of forged products, such as metal processing, repair work is in wood processing, and welding polishing welds as to bring them to perfection, and to create the appearance of their complete absence. A also work with metal - polishing, Copper plating, nickel plating, chrome plating, gold plating, matte coated, the term processing, chem. This treatment uses a great variety of machines, tools, tips and techniques for working with them.

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Tips for polishing.

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One of the constituent parts of the process is the choice of metal polishing tools: the choice of equipment for polishing, modes of operation on them depending on the polished object, and the important choice of the nozzle. Let's start with the nozzle, the nozzle can be divided into different groups of applications, the main distinction is their field of application, such as nozzles for metal, wood, stone processing. The next item is the selection of operations necessary to you, such as: metal sawing to a nozzle, clean the other way say that the surface of choice for cleaning nozzles without significance as it is for polishing. The last item but not least is the choice of nozzles on the hardness depends on the success of 50% of the process.

 

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