Pass type and rolling process of a rail all-purpose finish rolling product
A technology for finished passes and rails, used in manufacturing tools, metal rolling, metal rolling, etc., can solve the problems of large difference in plumpness, deviation of tread shape from standard end faces, etc., to improve accuracy and quality, and improve curvature. And the shape of the tread, the effect of improving the rail height
Active Publication Date: 2018-08-03
ANGANG STEEL CO LTD
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Problems solved by technology
[0002] At present, most of the rolling rails in the world adopt the universal rolling method. The so-called universal rolling includes universal rough rolling and universal finishing rolling. Universal rough rolling (UR) consists of two vertical rolls and two horizontal rolls. type, the edger (E) is a two-roll pass; the universal finishing (UF) is usually a semi-universal pass, consisting of two horizontal rolls and a bottom vertical roll, and the two horizontal rolls process the rail head and rail waist , two horizontal rollers are open in the middle of the drive side, and the rail head tread is free to fill. This semi-universal pass has certain defects in the control of rail height and tread shape, such as rail height and fullness. The same root difference is large, and the tread shape deviates from the standard end face
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[0011] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0012] See figure 1 , a rail full universal finish rolling finished pass (UF), made up of vertical roll 1, horizontal roll 2, vertical roll 2 3, vertical roll 1, horizontal roll 2, vertical roll 2 3 are respectively processed with The roller groove corresponding to the shape of the finished rail, the first vertical roller 1, the horizontal roller 2, and the second vertical roller 3 are arranged on their respective rolling mills; the rollers on the vertical roller 1, two horizontal rollers 2, and the second vertical roller 3 The grooves are assembled correspondingly to form the finished pass pattern (UF) of the rail.
[0013] The vertical roller 1 and the horizontal roller 2 are provided with an open roll gap at the lower forehead of the rail head.
[0014] The second vertical roller 3 is a flat roller.
[0015] Described vertical roller-one hea...
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The present invention relates to the steel rail production process of metallurgical steel rolling, in particular to a rail all-purpose finish rolling product pass and rolling process, which consists of one vertical roll, two horizontal rolls, The vertical rollers are assembled correspondingly to form the rail finished pass (UF), and the last process of rail rolling, that is, the finished product rolling process, adopts the rolling process method of the universal finish rolling finished pass (UF). Roller 1 fully processes the rail head directly, two horizontal rolls fully process the rail body, vertical roll 2 fully rolls the bottom of the rail, and the entire rail section is rolled into shape at one time. Compared with the prior art, the beneficial effects of the present invention are: adopting the pass type and rolling process can improve the rail height and the same root difference of fullness, improve the curvature of the end of the rail and the shape of the tread, and improve the accuracy and accuracy of the rail section size. quality.
Description
technical field [0001] The invention relates to a steel rail production process for metallurgical steel rolling, in particular to a rail universal finish rolling finish pass (UF) and rolling process. Background technique [0002] At present, most of the rolling rails in the world adopt the universal rolling method. The so-called universal rolling includes universal rough rolling and universal finishing rolling. Universal rough rolling (UR) consists of two vertical rolls and two horizontal rolls. type, the edger (E) is a two-roll pass; the universal finishing (UF) is usually a semi-universal pass, consisting of two horizontal rolls and a bottom vertical roll, and the two horizontal rolls process the rail head and rail waist , two horizontal rollers are open in the middle of the drive side, and the rail head tread is free to fill. This semi-universal pass has certain defects in the control of rail height and tread shape, such as rail height and fullness. The same root differen...
Claims
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IPC IPC(8): B21B13/08
Inventor 张金明杜斌刘鹤廖德勇徐仁山
Owner ANGANG STEEL CO LTD