Plasma call air which is heated by electric arc to temperatures in 2500-3000os and is in the ionized state. This ionized air carries electric current which melts metal and blows it from the place of cut.
1. Plasma cutting is applied in such industries as mechanical engineering, for example, to cutting of sheet metal plate and pipes. This tool and in economy, advertizing and also in the municipal sphere is popular.
2. Unlike the cuts made by the tame Bulgarian plazmorez performs the work quicker and more qualitatively. The place of section of metal turns out equal, accurate, without agnails and scale, and after plasma cutting of part practically do not need further processing. Plazmoreza can carry out figured cutting, there are no restrictions on geometry and form of the drawing. Also the majority of metals and alloys give in to processing by means of plasma cutting: cast iron, aluminum, steel, copper and others. In preliminary preparation of preparations before work, such as removal of pollution and also paint or rust there is no need.
3. Essential advantage is also that the place of cut does not heat up and heat distortions of metal are minimum. At plasma cutting gas is not applied and it considerably increases safety of the carried-out works and their environmental friendliness.
4. Operating part of plazmorez is the plasmatron, he is direct and indirect action. The plasmatron of direct action is used when cutting metal preparations. During cutting of nonmetallic parts use plasmatron of indirect action. Sometimes happens it is necessary to define possibilities of plasmatron, the nozzle is for this purpose used. It happens various sizes. The volume of the machine cut and speed of work depends on diameter of nozzle. And from its length – quality of cutting of metal.
5. At plasma cutting not only air (is used at thickness of metal up to 50 mm), but also oxygen, hydrogen, argon, helium, nitrogen and their mixes.
6. Machines of plasma cutting are subdivided into transformer (cut sheet metal plate to 40 mm) and invertor (cuts metal to 30 mm, but consumes not enough electric power). Happen contact (thickness of cutting of 10-15 mm) and contactless (thickness of the cut metal of 20-80 mm). Also plazmoreza household (the consumed voltage of 220 V) and industrial machines are used (work from current of 380 V). At connection of plazmorez to network it is necessary to consider the big power consumed by them – more than 4.5 kW.
7. When choosing plazmorez it is necessary to consider two factors: for what processing of metals it will be used and what depth of cutting will be had by preparations. Cutting of different metals requires different current intensity.