Specifications
1.stable rolled strip profits
2.good surface quality
3.high dimension accuracy
4.Good wear resistance
5.ISO9001
1.Nodular cast iron roll for bar rolling mill
Rod surface hardness | HSD70-90 |
Core department hardness | HSD35-55 |
Core department tensile strength | >500Mpa |
Nodular cast iron rolls are mainly used in the billet and roughing stand of hot rolling mills;sections mills,tube mills,bar mills and wire mills.
2.Pearlitic Nodular cast iron bar mill roll
C Si Mn P S Ni Cr Mo
Spheroidal Graphite Pearlitic Roll (SGPI) | 2.90~3.60 | 1.40~2.20 | 0.40~1.00 | ≤0.15 | ≤0.03 | 1.50~2.00 | 0.10~0.60 | 0.20~0.80 |
Spheroidal Graphite Pearlitic Roll (SGPII) | 2.90~3.60 | 1.20~2.00 | 0.40~1.00 | ≤0.15 | ≤0.03 | 2.01~2.50 | 0.20~1.00 | 0.20~0.80 |
Spheroidal Graphite Pearlitic Roll (SGPIII) | 2.90~3.60 | 1.00~2.00 | 0.40~1.00 | ≤0.15 | ≤0.03 | 2.51~3.00 | 0.20~1.00 | 0.20~0.80 |
Spheroidal Graphite Pearlitic Roll (SGPI) | 60~70 | 35~55 | >450 |
Spheroidal Graphite Pearlitic Roll (SGPII) | 55~65 | 35~55 | >450 |
Spheroidal Graphite Pearlitic Roll (SGPIII) | 62~72 | 35~55 | >450 |
3.Bainitic/ acicular Nodular Cast Iron bar mill Roll
Brand | C | Si | Mn | Cr | Ni | Mo |
SGA 1 | 3.00-3.50 | 1.40-2.40 | 0.20-0.80 | ≤0.50 | 2.50-3.50 | 0.40-1.00 |
SGA 2 | 3.00-3.50 | 1.20-2.00 | 0.20-0.80 | 0.20-1.00 | 3.00-4.50 | 0.40-1.00 |
Brand | Barrel Hardness(HS) | Tensile Strength(Mpa) | Bending Strength(Mpa) | Application |
SGA 1 | 55-70 | ≥400 | 600-800 | Small profiled bar, stick, narrow steel finishing mill frame, high speed wire pre-finishing rolling |
SGA 2 | 62-80 | ≥400 | 600-800 |
4.Indefinite Chilled cast iron bar mill roll
Grade | Hardness(HSD) | C | Si | Mn | Ni | Cr | Mo |
Indefinite-I | 60-70 | 3.0/3.5 | 0.5/1.0 | 0.5/1.0 | 0.5/1.0 | 0.5/1.0 | 0.2/0.6 |
Indefinite-II | 62-72 | 3.0/3.5 | 0.5/1.0 | 0.5/1.0 | 1.0/2.0 | 0.5/1.0 | 0.2/0.6 |
Indefinite-III | 65-75 | 3.0/3.5 | 0.5/1.0 | 0.5/1.0 | 2.0/3.0 | 0.7/1.2 | 0.2/0.6 |
Indefinite-IV | 70-85 | 3.0/3.5 | 0.5/1.0 | 0.5/1.0 | 3.0/5.0 | 1.0/2.0 | 0.2/0.6 |
Hardness of shell | HSD60-85 |
Hardness of neck | HSD35-48 |
Tensile Strength of core | ≥450Mpa |
For the finishing stands of continuous rolling mill of strip and bar, the pre-finishing stands of high speed wire, the intermediate and the front of finishing stands of small section, also utilized in thin plate and straightening roll.
