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Hot-rolled ribbed bar double-length shearing control method

A technology of hot-rolled ribbed steel bar and control method, which is applied in the direction of length control, metal rolling, metal rolling, etc., can solve the problems of threaded steel pre-judgment, birdcage punching, and easy "blocking of steel", so as to improve production efficiency Effect

Pending Publication Date: 2022-07-22
广西钢铁集团有限公司 +1
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Problems solved by technology

[0003] The invention provides a method for controlling double-length shearing of hot-rolled ribbed steel bars, which can solve the problem of easy "steel blocking" caused by the inability to predict the length of the entire threaded steel in the existing double-length shearing or the "cage punching" problem

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  • Hot-rolled ribbed bar double-length shearing control method

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail:

[0018] The hot-rolled ribbed steel bar multi-scale shear control method adopts a detector that detects the movement information of the rebar in real time, such as figure 1 As shown, the detector includes a first detector 1 and a second detector 2. Both the first detector 1 and the first detector 2 are hot metal detectors; the first detector 1 is set at the 18# rolling mill, and the first detector 1 The second detector 2 is arranged at the 2# flying shear 6 between the 12# rolling mill 4 and the 13# rolling mill 5, and the water cooling device 9 and the doubler are arranged between the 18# rolling mill 3 and the input roller table 8 of the large cooling bed 7 in turn. Ruler scissors 10 and fixed-length scissors 11 are arranged at the output end of the output roller table 12 of the large cooling bed 7; the side of the large cooling bed 7 away from its input e...

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Abstract

The invention discloses a hot-rolled ribbed steel bar double-length shearing control method, and belongs to the technical field of metal smelting, the method adopts a first detector and a second detector, when the head end of a deformed steel bar moves to the first detector, the first detector transmits detected information to a controller, the controller starts timing, and the second detector sends the detected information to the controller; according to a first mathematical model built therein, the time value needed when the head end of the deformed steel bar is moved to the large cooling bed is calculated, the time value is T, when timing reaches T, the double-length shear is controlled to conduct shearing, shearing is conducted circularly in this way until information detected by the second detector disappears, and at the moment, the time value is T; and the controller predicts the lengths of the remaining deformed steel bars according to a second mathematical model established in the controller, and controls the length of the tail section of deformed steel bar within a preset range value after segmented calculation. According to the method, the problem that steel blockage or birdcage punching is easily caused due to the fact that the length of the whole deformed steel bar cannot be pre-judged in existing double-length shearing can be solved.

Description

technical field [0001] The invention relates to the technical field of metal smelting, in particular to a method for controlling double-length shearing of hot-rolled ribbed steel bars. Background technique [0002] In the production of hot-rolled ribbed steel bars in iron and steel enterprises, after the billets output from the heating furnace are rolled into rebars by 1-18# rolling mills arranged at intervals along the roller table, they need to be sheared by double-length shears. It can be thrown into a large cooling bed for cooling, and then be output by sizing shears for sizing and segmenting. The existing control method of double-length shearing adopts: a detector for detecting steel tapping information is provided at the output end of the 18# rolling mill, and when the detector detects the steel tapping information, the information is transmitted to the controller, After calculating and processing this information, the controller controls the double-length shears to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/70B21B38/00B21B15/00B21F11/00
CPCB21B37/70B21B38/00B21B15/0007B21F11/00B21B2015/0014
Inventor 蔡伟金梁黄承飞彭聪吴庚民陈少前
Owner 广西钢铁集团有限公司
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