Unit price will be decided by engineering drawing.
Introduction:
Acicular spheroid graphite cast iron roll is a type of roll used in the manufacturing industry. It is made by adding NiCrMo to the cast iron, which changes the matrix into an acicular microstructure. This process enhances the properties of the cast iron, making it stronger, tougher, and more wear-resistant than other types of rolls such as Spheroid Graphite Pearlite Roll (SGA).
The acicular microstructure of the roll ensures that it can withstand high pressure and heavy loads without deforming or cracking. This is particularly useful in industrial applications such as steelmaking, where the roll is exposed to high temperatures and severe working conditions.
In comparison, SGA is a type of roll that is made by adding magnesium and/or rare earth elements to the cast iron, which results in the formation of spheroidal graphite microstructure. While SGA has good strength, toughness, and wear resistance, it is not as robust as acicular spheroid graphite cast iron roll.
Therefore, acicular spheroid graphite cast iron roll is preferred in industries where heavy-duty applications are common, and the roll is subjected to extreme pressures, temperatures, and corrosive environments. Its superior properties make it a valuable asset to industries such as steelmaking, rolling, and other manufacturing operations.
Manufacturing Process:
Material and Properties:
| Grade |
C |
Si |
Mn |
Cr |
Ni |
Mo |
Nb |
Hardness (HS) |
Tensile Strength (MPa) |
| SGA I |
2.90/3.60 |
1.20/2.20 |
0.20/0.80 |
0.20/1.00 |
2.50/3.00 |
0.50/1.00 |
- |
60/80 |
>230 |
| SGA II |
2.90/3.60 |
1.00/2.00 |
0.20/0.80 |
0.30/1.50 |
2.50/4.50 |
0.50/1.00 |
- |
70/82 |
>230 |
| SGA III |
2.90/3.60 |
1.00/2.00 |
0.20/0.80 |
0.30/1.50 |
2.50/4.50 |
0.50/1.00 |
0.40/1.20 |
72/85 |
>230 |
Microstructure:
Applications:
Intermediate and finishing stands of bar, wire rod and medium section mills.
Forming, sizing, reducing and straightening rolls for pipe and tube mills.
Sleeves for Universal finishing stands (Horizontal & Vertical).
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