2012-05-10 hsm roll cooling simulation
TRANSCRIPT
2012-05-10 TOSCELIK Roll Cooling Simulation
1
F1 – F4 Top Roll minimum diameter 450 mm based on
dwgs TO-HD-02-M-407-03-02630641 & TO-HD-02-M-407-03-02630775
Roll exit side 1st bar
Roll exit side 2nd bar
Roll entry side
270
Incl
inatio
n 3
0°
259
Movem
ent
Roll - Enter side: 1. Bar, 1. Nozzle
256
Incl
inatio
n 3
0°
253
Movem
ent
Roll - Enter side: 2. Bar, 1. Nozzle
264
Inclin
atio
n 2
3°
264
Movem
ent
Roll - Exit side: 3. Bar, 1. Nozzle
2012-05-10 TOSCELIK Roll Cooling Simulation
2
Roll exit side 1st bar nozzle arrangement and overlap
Roll exit side 2nd bar nozzle arrangement and overlap
Roll entry side nozzle arrangement and overlap
259
-508
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Roll - Enter side: 1. Bar, 1. Nozzle
1403
1150
127 127
362
307
253
-495
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Roll - Enter side: 2. Bar, 1. Nozzle
1343
1150
97 97
341
286
264
-528
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Roll - Exit side: 3. Bar, 1. Nozzle
1398
1150
129 119
351
296
2012-05-10 TOSCELIK Roll Cooling Simulation
3
Overall water distribution on roll surface
Water distribution on roll
-575 -500 -450 -400 -350 -300 -250 -200 -150 -100 -50 0 50 100 150 200 250 300 350 400 450 500 575
Position [mm]
0
200
400
600
800
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
3200
3400
3600
3800
4000
4200
4400
4600
4800
5000
5200
5400
5600
5800
6000
6168,7
Liqu
id le
vel [
l/min
.m]
Liquid level (VK=18,79%) Mean value (5011,87 l/min.m)
Roll surface
2012-05-10 TOSCELIK Roll Cooling Simulation
4
Water density on roll [l/min m²
l/min.m²
0
2000
4000
6000
8000
10000
12000
14000
16000
18000
20000
22000
24000
26000
28000
30000
32000
34000
36000
38000
40000
42000
44000
46000
48000
50000
52000
54000
56000
58000
60000
62863,23
2012-05-10 TOSCELIK Roll Cooling Simulation
5
Water density on roll [l/min m²]
l/min.m²
0
2000
4000
6000
8000
10000
12000
14000
16000
18000
20000
22000
24000
26000
28000
30000
32000
34000
36000
38000
40000
42000
44000
46000
48000
50000
52000
54000
56000
58000
60000
62863,23
2012-05-10 TOSCELIK Roll Cooling Simulation
6
Comments:
a. Nozzle interfere which each other, especially when offset angle 0°.
b. Large overlaps.
c. Large spray angles.
d. Less water density in the roll center because of smaller nozzle sizes.
Questions:
1. General: Which parameters could be changed?
2. Could the distance between 1st and 2nd row (44 mm) be increased?
3. Could we use a larger offset angle (from the drawings 0° and 15°)?
4. Could nozzles with smaller spray angle be used?
5. Is it the intention to have less water in the roll center?