Casting Method: | Sand Casting |
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Casting Form Material: | Graphite |
Casting Metal: | Cast Iron |
Machining Tolerance: | +/-0.01mm |
Standard: | ASTM |
Certification: | ISO 9001:2000 |
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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.Pearlitics Nodular cast iron bar mill roll | |||||||||
Type | C | Si | Mn | P | S | Ni | Cr | Mo | |
SGP I | 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 | |
SGP II | 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 | |
SGP III | 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 | |
SGP I | 60~70 | 35~55 | >450 | ||||||
SGP II | 55~65 | 35~55 | >450 | ||||||
SGP III | 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 | Tensile Strenghth | Bending Strength | Application:small profiled bar, stick, | |||||
SGA 1 | 55~70HS | ≥400Mpa | 600~800 | narrow steel finishing mill frame, high | |||||
SGA 2 | 62~80HS | ≥400Mpa | 600~800 | speed wire prefinishing rolling | |||||
4.Indefinite chilled cast iron bar mill roll | |||||||||
Grade | Hardness | C | Si | Mn | Ni | Cr | Mo | ||
I | 60~70HSD | 3.0~3.5 | 0.5~1.0 | 0.5~1.0 | 0.5~1.0 | 0.5~1.0 | 0.2~0.6 | ||
II | 62~72HSD | 3.0~3.5 | 0.5~1.0 | 0.5~1.0 | 1.0~2.0 | 0.5~1.0 | 0.2~0.6 | ||
III | 65~75HSD | 3.0~3.5 | 0.5~1.0 | 0.5~1.0 | 2.0~3.0 | 0.7~1.2 | 0.2~0.6 | ||
IV | 70~85HSD | 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 prefinishing stands of high speed | |||||||||
wire, the internediate and the front of finishing stands of small section, also ultilized in thin plate and | |||||||||
straightening roll. |
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