Презентация, доклад по английскому языку Электроинструменты

time by 5-10 times compared to working with hand tools.

of tools. Tools are divided into basic, which is performed processing and auxiliary-joinery, designed for marking, drilling, sawing and other works.

in rocky soils; in brick; concrete and reinforced concrete. Drilling of holes: in wooden structures and parts; in metal.

materials; fiberglass; sheet metal. Processing of edges for welding.

profile metal; small rolled products. Stripping: heads of reinforced concrete piles; metal; welds. Grinding: plastered surfaces, wooden and parquet floors; terrazzo and concrete floors. The fit of individual parts.

nuts, screws, studs. Threading in different materials.

of concrete, asphalt and reinforced concrete. Cutting of metal and fittings..

monolithic concrete and reinforced concrete structures. Compaction and leveling of concrete in the device bases and coatings. The compaction of the surface of the base.

boards before installation; metal molds, cassettes. Application to the surface: paint; putty masses; soil. Priming of the surface with liquid glass. Varnishing of surfaces.

of wood. Trimming parquet riveting, jointing edges, milling grooves. Sawing timber. Selection of holes and sockets of rectangular shape and tongue grooves. Sawing parts out of wood.

tool in the network and start work only with the permission of the teacher. 3. Make sure that the current-carrying wire is not twisted and does not fall under the cutting tools. 4. Firmly and securely fix the workpiece on the workbench. 5. Start work only after the motor has reached full speed. 6. Periodically disconnect the tool from the mains and take short breaks to avoid overheating of the motor.  7. At the end of the work the tool must be disconnected from the network.