ROLLS DIVISION
SG IRON PEARLITIC ROLLS
Microstructure of SG
accicular rolls
Distance from surface - mm
Hardness - ShC
CHARACTERISTICS
S.G.L.Accicular Rolls are stronger and more wear resistant than S.G.I. Pearlitic Rolls and are capable of much higher hardness. They are alloyed with a higher % of Nickel and Molybdenum than S.G.I Pearlitic and as a result, Accicular rolls have a bainitic matrix with increased carbide. The name of this material is based on its constituents of nodular graphite and carbides in an accicular (needle-like) bainitic matrix, also called Lower Bainitic. These Rolls are very suitable for a wide range of applications due to its hardness penetration, good wear and heat resistance. Intensive water cooling of rolls is necessary to ensure best performance.
SUPPLY CONDITIONS
- CO2 PROCESS
- PROOF MACHINED
- FINAL SIZE MACHINED/ BEARING SIZE
- HEAT TREATMENT
- GRADE CONFIRMATION THROUGH SPECTROMETER AND UTM MACHINE
CHEMICAL COMPOSITION
| SYMBOL | HARDNESS (SH-D) |
C% | MN% | SI% | S% | P% | CR% | NI% | MO% | UTS KGL/MM.SQ |
| SGP-40 | 40-50 | 3.00 3.30 |
0.30 0.50 |
1.80 2.30 |
0.015 MAX |
0.080 MAX |
0.20 MAX |
2.00 3.00 |
0.60 0.90 |
60-70 |
| SGP-50 | 50-60 | 3.00 3.30 |
0.30 0.50 |
1.80 2.30 |
0.015 MAX |
0.080 MAX |
0.50 MAX |
2.00 3.00 |
0.70 1.00 |
55-70 |
| SGP-60 | 60-70 | 3.10 3.50 |
0.50 0.80 |
1.30 2.00 |
0.015 MAX |
0.080 MAX |
0.30 0.80 |
2.00 3.50 |
0.80 1.20 |
50-70 |
| SGP-70 | 70-75 | 3.10 3.50 |
0.50 0.80 |
1.30 2.00 |
0.015 MAX |
0.080 MAX |
0.30 0.80 |
2.50 4.50 |
0.80 1.20 |
50-70 |
APPLICATIONS
These rolls are suitable for Intermediate and Finishing Mill stands for TMT Bar Mills, Rail and Structural mills. Rolls for Finishing Stands of Wire rod and Strip Mills.