剪切机自动控制系统 ——PLC控制硬件的设计规划 中英文翻译.docVIP

1汉译英 0 Foreword Cold sheet metal, belted steel products that pitch have advantages such as machinery of the size high in quality of surface with high and good precision, craft performance,etc., widely used in the technology of space flight, satellite, rocket, each department of national economy such as guided missile, flying, electron, car, chemical industry, household appliances, shipbuilding, architecture, petroleum, food and civil hardware at a high speed. In recent years, with the deepening of reform and opening-up, the enlargement of the scale of capital construction, the steel and iron industry has grown vigorously. For make cold to pitch, produce, reach high yield, high-quality, low cost, make and make great efforts operate, in cold design of person who pitch, have made very great achievement. Because users requirements for finished belted steel quality are rigorously enforced day by day, the requirement for producing the high efficiency, high benefit of economy is becoming more urgent. In this way, adopt a series of automatic control systems and computers to control on impelling coldly in the belted steel to pitch the plane in succession, thus realized that it is totally automatic to pitch the course of making entirely, has guaranteed the cold high efficiency, high yield, high quality and low consumption of production of the pitching machine in succession of belted steel . 1 Programmab lecontroller inindustry control application In modern steel and iron production, traditional manual operation oneself cannot obtain the good control quality by far.At present, in the electrical control domain, domestic and foreign generally uses PLC. Specially in the recent several year metallurgy profession, PLC by it under the industry adverse circumstance still could the redundant reliable work, and the antijamming ability strong characteristic obtains a more widespread use. PLC electrically controlled (logical control), the electricity meter (process control) and the elec