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AssigneeMorgan Construction Company
InventorT. Michael Shore
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A system for controlling front and tail end gauge of a continuous hot rolled product in a rolling mill includes first and second individually driven roll stands arranged successively along said pass line in advance of a group of roll stands. A controller adjusts the operating speed relationship between the first and second individually driven roll stands to achieve an increased level of tension in the front and tail end segments of the product passing between the first and second individually driven roll stands. The increased level of tension results in the decrease in product cross sectional area sufficient to compensate for the lack of cross sectional area reduction resulting from the absence of interstand tension experienced by said front and tail end segments while being rolled in the group of roll stands. To control the gauge of the front end of the continuous hot rolled product, the controller commands a decrease in the speed of the first roll stand as front end approaches the second individually driven roll stand, which is located adjacent to and downstream of the first individually driven roll stand. The reduction of the speed of the first roll stand below a nominal rolling speed establishes the increased level of tension of the product between the first and second roll stands when the front end enters the second roll stand. When the front end has passed the first roll stand, the controller commands the speed of the first roll stand to return to the nominal roll speed to roll the segment of the product between the front and tail ends. To control the gauge of the tail end of the product, the controller commands a decrease in the speed of the first roll stand as the tail end approaches the second individually driven roll stand.
In a rolling mill wherein a product of finite length is rolled continuously in a group of roll stands arranged successively along a pass line, with all but a front end segment and a tail end segment of said product being subjected to tension between successive roll stands in said group, thereby resulting in said front and tail end segments having cross sectional areas that are larger than the cross sectional area of the remainder of said product, a method of equalizing the cross sectional area of said product over a substantial portion of its length, comprising the steps of:
A system for controlling the cross sectional area of front and tail ends of a continuously hot rolled product in a rolling mill, said system comprising:
A system for controlling the cross sectional area of front and tail ends of a continuously hot rolled product in a rolling mill, said system comprising:
Dependencies are inferred from the claim text.