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  The main types of  welding Non-arc welding is more often called contact welding. In contact welding, the electrodes that supply current are applied directly to the metal that is being welded. A short, but very powerful current discharge (thousands of amperes) is applied through the metal located between the attached electrodes. In this case, fusion is obtained only between the applied electrodes.  If the electrodes are located directly opposite each other, then the welded joint is obtained point-wise. Although spot welding is not the only type of contact welding, but it is the most common.  Therefore, the concepts of "spot welding" and "contact welding" are often used as synonyms. The voltage of spot portable welding machine is a few volts. Therefore, contact welding is used mainly for bonding sheet metal. For example, in the automotive industry.  In construction, electric arc welding has become much more widespread. In electric arc welding, there is a ...

  Types of sprayers When choosing the type of tool, it is necessary to take into account the area of the treated surface. Powerful pneumatic or electric spray guns for water-based paint are more often used by professional painters with large volumes of work. Piston hand sprayers are more suitable for home use. Manual (mechanical) Inexpensive tools with a simple design, outwardly resemble old-style automobile pumps. The paint is pumped into them using a piston driven manually. The simplest manual paint sprayer consists of the following parts and assemblies: the housing is in the form of a cylinder, inside which there are 2 valves, the first for pumping air, the second for taking paint; a piston pump enclosed in a cylinder; handles in the form of the letter " T " for manual air injection; a spray gun (pistol) with a trigger, to which 2 hoses are connected: a pressure one that supplies compressed air, and a suction one for collecting paint; the latter is equipped with ...

  I want to carry out any finishing work as soon as possible so that the car or painting walls and ceilings , the room gets an attractive appearance, and can be used for its intended purpose. That is why today less and fewer home craftsmen take up brushes and rollers and prefer painting from a spray gun. This technology allows you to get a perfectly smooth and smooth coating in a matter of minutes, and at the same time spend a minimum of effort. But in order for the result to meet expectations, you will have to follow certain rules. For example, it is correct to determine which paint is suitable for a spray gun in your case, and how to properly dilute it. This is what you will learn from this article. Why dilute the paint As is known, the diameters of the spray gun nozzles can vary significantly and vary in the range: from 0.1 to 4 mm. And we still do not take into account cartouche pistols, which are also included in this group of tools. Having judged logically, it b...