A method for measuring zero position of rolling mill crosshead
A measurement method and cross-head technology, applied in metal rolling, length measuring device, metal rolling, etc., can solve the problems of inability to meet the needs of measurement, time-consuming, and many people, so as to shorten the time for measuring the cross-head, The effect of saving maintenance costs
Active Publication Date: 2018-10-09
ANGANG STEEL CO LTD
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Problems solved by technology
[0008] Since the measuring tools used by the original Japanese party are special instruments of several different sizes, and at the same time cooperate with the inner diameter micrometer (see figure 2 ), the specific operation is to fix the special utensils on the archway with screws, which requires four people to work together, two of them hold the special utensils, one tightens the screws, and one measures. It takes four people three working days, so this method cannot meet the needs of measurement during the normal maintenance period
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[0021] The present invention will be described in detail below in conjunction with the accompanying drawings, but it should be pointed out that the implementation of the present invention is not limited to the following embodiments.
[0022] See image 3 , Figure 4 , a method for measuring the zero position of a crosshead of a rolling mill, utilizing a dial gauge 5 to measure the zero position of a crosshead, specifically comprising the following steps:
[0023] 1) Use the dial indicator 5 to adjust the size on the standard flat plate 6, and grind a standard flat plate 6 of 400×80×50mm to reduce the cost. E;
[0024] 2) Adsorb the magnetic base of the dial indicator 5 on the crosshead slide plate 1, measure the distance from the rolling mill archway 2 to the crosshead slide plate 1 with the block gauge 7 and the dial gauge 5, and obtain the zero position of the crosshead (the value of the block gauge is B. The value of the dial indicator is C, and the zero value of the cro...
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Abstract
The invention relates to a measuring method for the zero position of a rolling mill cross head. The zero position of the cross head is measured through a dial gage. The measuring method specifically comprises the following steps that (1) the dimension is adjusted with the dial gage on a standard flat plate, specifically, a magnetic base of the dial gage is attracted to the standard flat plate so that measuring can be conducted; and (2) the magnetic base of the dial gage is attracted to a slide plate of the cross head, a block gauge is arranged on a mill post and cooperates with the dial gage to measure the distance between the mill post and the slide plate of the cross head, and then the zero position of the cross head is obtained. The measuring method has the advantages that the time for measuring the cross head is shortened from 24 hours to 8 hours, the number of constructors is decreased from four to one, measuring work of a rolling mill can be completed in one time of overhauling, the situation that many special measuring instruments are manufactured is avoided, and the maintenance cost is reduced.
Description
technical field [0001] The invention relates to a method for measuring the zero position of a crosshead of a rolling mill. Background technique [0002] The finishing mill of the 1780 line finishing mill of the hot strip mill is designed by Japan's MHI (Mitsubishi Corporation), and the complete set of equipment produced by domestic cooperation adopts the world's most advanced PC rolling mill to control the crown of the strip. Its design and production specifications And crosshead technical parameters: [0003] 1. Steel plate width: 800~1630mm; [0004] 2. Steel plate thickness: 1.2~19mm; [0005] 3. Zero position of PC crosshead: [0006] The zero position A values of crossheads of rolling mill F2, rolling mill F3 and rolling mill F4 are: 38.5(-0.216~+0.116)100.5(-0.216~+0.116); 43.5(-0.216~+0.116)105.5(-0.216~+0.116) )28.5(-0.216~+0.116)90.5(-0.216~+0.116)31.5(-0.216~+0.116)93.5(-0.216~+0.116)33.5(-0.216~+0.116)95.5(-0.216~+0.116)36.5 (-0.216~+0.116)98.5(-0.216~+0.11...
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IPC IPC(8): B21B38/00
CPCB21B38/00
Inventor 肖守义于贺宝陈新李程王建
Owner ANGANG STEEL CO LTD