OEM ODM Spheroidal Graphite Iron Rolls (SG Iron) with Hsd40-70 and Excellent Wear Resistance

• Customization: Available
• Casting Form Material: Metal
• Casting Metal: Cast Iron
• Model NO.: Spheroidal Graphite Iron Rolls (SG Iron)
• Casting Form Usage Count: Semi-permanent
• Surface Treatment: Polishing
• Surface Roughness: Ra0.05
• Machining Tolerance: +/-0.01mm
• Standard: Sn-200, SMS Group, GB
• Certification: CE, ISO 9001:2008
• Weight: 50kg-10000kg
• Hardness: 75-95
• Transport Package: Standard Seaworthy
• Specification: Spheroidal Graphite Iron Rolls (SG Iron)
• Trademark: Seawoo
• Origin: China
• HS Code: 84553000
• Production Capacity: 10000

Product Description

Nodular irons belong to a group of cast iron in which most of the carbon crystallizes as spherical particles known as graphite nodules. Wide range 
of properties may be obtained by adjusting the three major alloying elements: Cr, Ni and Mo.

The low nickel grade (FerriticIron) provides optimal hardness with high strength and toughness. The medium nickel grade (Pearlitic Iron) has higher surface hardness necessary for intermediate and finishing. High nickel and molybdenum grade (Bainitic/Acicular Iron) provide excellent mechanical properties at high working temperature in terms of strength, toughness, and hardness.

Nodular cast iron is the most common roll grade in hot rolling of billets, sections, bar and wire rod, narrow strip and seamless tube. Pearlitic iron rolls with additional Cr content can give better hardness penetration that is suitable for rolling sections with deep grooves.

Rolls from these grades can be produced by static or centrifugal casting.
 

MATERIAL	GRADE	CHEMISTRY									Barrel Hardness
		C	Si	Mn	P	S	Cr	Ni	Mo	Mg	(HSD)
Spheroidal Graphite	SG	2.9-3.6	0.8-2.5	0.4-1.2	≤0.25	≤0.03	0.2-1.6	-	0.2-0.6	≥0.04	50-70
	SG II	2.9-3.6	0.8-2.5	0.4-1.2	≤0.25	≤0.03	0.2-1.6	0.5-1.0	0.2-0.8	≥0.04	50-65
	SG III	2.9-3.6	0.8-2.5	0.4-1.2	≤0.2	≤0.03	0.3-1.2	1.01-1.5	0.2-0.8	≥0.04	55-70

LONG PRODUCT (LP) MILL ROLLS
MILL TYPE	ROLL TYPE	ROLL GRADE
BAR MILL	Roughing, Intermediate,Finishing	Cast Steel, Adamite Steel, Nodular lron, HSSTC in ring roll form
WIRE ROD MILL	Roughing,intermediate,Finishing, Finishing Block	Cast Steel, Adamite Steel Nodular lron, HSSCemented Carbide
SECTION MILL	Breakdown. RoughingIntermediate, Finishing	Cast Steel, Adamite Steel, Graphitic SteelNodular lron
HEAVY SECTION MILL	Breakdown,Roughing, Edger,Tandem, UF, UR, Straightening	Cast Steel, Adamite Steel, Graphitic SteelHiCr lron, HiCr Steel, Forged Steel

FLAT PRODUCT (FP) MILL ROLLS
MILL TYPE	ROLL TYPE	ROLL GRADE
HSM, Plate	Roughing WR	Special Alloy Cast Steel, HiCrSteel SemiHSS
HSM	Roughing & Finishing BUR	Duplex Cast Steel, Forged Stee!
HSM	F1-F4, F5-F7 WR	Hi Cr lron, ICDP HSS
CSM	Tandem, Reversible,Sendzimir WR	Cr3, Cr4, Cr5 Forged Steel
CSM	BUR	Cr3, Cr4, Cr5 Forged Steel/Duplex Cast Steel