矫直机毕业论文中英文资料外文翻译文献

矫直机毕业论文中英文资料外文翻译文献

矫直机论文中英文资料外文翻译文献

外文翻译

原文：

AUTOMATING THE CONTROL OF MODERN EQUIPMENT FOR

STRAIGHTENING FLAT-ROLLED PRODUCTS

The company Severstal’ completed the successful introduction of new in-line plate-straightening machines (PSMs) on its 2800 and 5000 mills in August 2003 [1, 2, 3]. The main design features of the machines are as follows:

each machine is equipped with hydraulic hold-down mechanisms (to improve the dynamics and accuracy of the machine adjustments and more reliably

maintain a constant gap);

the machines have mechanisms to individually adjust each work roller with the

aid of hydraulic cylinders (this broadens the range of straightening regimes that can

be realized by providing a measure of control over the change in the curvature of the

plate);

each work roller is provided with its own adjustable drive (to eliminate rigid

kinematic constraints between the spindles);

the system of rollers of the PSM is enclosed in cassettes (to facilitate repairs and

reduce roller replacement costs);

the PSM has a system that can be used to adjust the machine from a nine-roller

straightening scheme to a five-

roller scheme in which the distance between the rollers is doubled (this is done

to widen the range of plate thick-nesses that the machine can accomodate).

Thus, the new straightening machine is a sophisticated multi-function system of mechanisms that includes a wide range of hydraulically and electrically driven components controlled by digital and analog signals. The entire complex of PSM mechanisms can be divided into two functional groups: the main group, which includes the mechanisms that partici-pate directly in the straightening operation (the hold-down mechanisms, the mechanisms that individually adjust the rollers,the mechanisms that adjust the components for