1700mm Tandem Cold Rolling Mill Reducer

1. 1700mm Tandem Cold Rolling Mill Reducer Product features

The main drive of the fifth frame of the unit is a speed increaser with two pairs of gears. The upper and lower rollers are each connected in series by two 1500 FanN motors, which are driven by a pair of gears. The gear parameters are: center distance a = 650 rrm, peripheral speed 30 m/s, single helical tooth, effective tooth width b = 340mm, B! Each = 45/35, wu = 16′ a n = 20 ° ‘= 9°. Carburized and burnt teeth, the accuracy is DI N standard 5 grade. Nanjing High Speed Gearbox Factory adopts high-speed and heavy-duty gear design and manufacturing technologies such as gear tooth modification, tooth root smooth transition, deep carburization, shot peening, and tooth surface lock copper. It successfully trial-produced speed-increasing gears in 1985. The main indication reaches the German SJ\tf3 level, and it has been running normally until now. The structure of the speed-increasing gear is shown in Figure 1.

Each bearing of the speed increaser has an eccentric sleeve with an eccentric pyrene of 0.25 mm.

Wuhan Iron and Steel’s 1700nm tandem cold rolling mill is manufactured by SMS Company, and its transmission parameters are shown in Table 1.
Table 1: Transmission parameters of 17OOrrm tandem cold rolling mill

机架	1	2	3	4	5
功电率	2 Xl 500	4 Xl 500	4 Xl 500	4 Xl 500	4 Xl 500
电机转速 (r/min)	250/750	250/750	250/750	250/795	250/765
传动速比	1. 76: 1	1. 42: 1	1.05:1	1: 1	0. 78: 1
轧棍转矩 （如）	202/67	327 /109	253 /85	229/72	178/58

Figure 1: 1700mm tandem cold rolling mill 5th stand speed increaser