75mm Diameter Steel Grinding Rods

75mm,80mm,85mm,90mm,100mm Diameter Steel Grinding Rods

Description: Engineered for highly abrasive Rod Mill environments with a minimum surface hardness of 50HRC. Heat treated to have a high surface hardness (for
increased wear resistance) and low core hardness (for increased toughness).
Grades: HTR50
Diameter:75mm,80mm,85mm,90mm,100mm(Common Steel Bar Diameters)
Length: Usually customized according to client requirements,common lengths include 1 meter, 2 meters, 6 meters, etc.
Packaging:Rod lengths can be cut to specified customer length, and are supplied in a strapped bundle with bundle weights and rod counts as required by the customer.
Choose the appropriate surface treatment and heat treatment method according to the specific application.

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Product Detail

Chemical Composition of Grinding Rods

Grade	C	Si	Mn	S	P	Cr	Mo
MBGA	0.70~0.95	0.20~0.75	0.50~1.00	≤0.035	≤0.035	≤0.80	≤0.30
MBGB	0.70~0.95	0.20~0.75	0.50~1.00	≤0.035	≤0.035	≤0.80	≤0.30
MBZA	0.38-0.70	0.30-1.90	0.50-1.50	≤0.035	≤0.035	≤1.2	≤0.30
MBZB	0.38-0.70	0.30-1.90	0.50-1.50	≤0.035	≤0.035	≤1.2	≤0.30

Mechanical Properties of Grinding Rods

Grade	Nominal Diameter (mm)	Surface Hardness (HRC)	Core Hardness (HRC)	Impact Absorption Energy at 25°C (KV2 /J)	Falling Rod Impact Fatigue Life (times at 4.5m drop)
MBGA	≤75	≥45	≥40	≥5	≥10
MBGA	>75	≥45	≥35	≥5	≥10
MBGB	≤75	≥30	≥30	≥7	≥10
MBGB	>75	≥25	≥25	≥7	≥10
MBZA	≤75	≥45	≥30	≥5	≥10
MBZA	>75	≥45	≥25	≥5	≥10
MBZB	≤75	≥25	≥25	≥7	≥10
MBZB	>75	≥25	≥25	≥7	≥10

Notes:

1. Core hardness, impact absorption energy, and impact fatigue life are generally not the basis for delivery. If required by the user, it should be negotiated between the supplier and the demander.

2. The falling rod impact fatigue test is conducted with a grinding rod of 100mm diameter on a test machine at a standard height of 4.5m. The falling impact fatigue times for grinding rods of other diameters should be calculated according to the formula in Appendix A (A.2).

Production Process

Steel → Adding alloy materials → Heating in electric furnace → Testing composition → Rolling into rod shapes → Straightening → Cutting to length → Quenching in electric furnace → Cooling → Tempering in electric furnace → Out of the furnace and packaged