Forged steel ball for grinding ball mill

Model

20mm-160mm

Name

Low Carbon Forged Steel Ball

Chemical Composition

C:0.42-0.50,Si:0.17-0.37,Mn:0.5-0.8,Cr:0.25,Cu:0.25,Mo:0.30

Hardness

≥45HRC

Breakage Rate

≤1%

Impact Value

12J/cm2

Out of Roundness Rate

≤1%

Processing Technic

Round Steel→Furnace Heating→Preforging→Roll Forging→Automatic Isothermal Transfer

→Quenching→Feeding into Temper Tank→Transporting to Warehouse

Model

20mm-160mm

Name

Middle Carbon Forged Steel Ball

Chemical Composition

C:0.48-0.56,Si:0.17-0.37,Mn:0.7-1.0,Cr:0.25,Cu:0.25,Mo:0.30

Hardness

≥48HRC

Breakage Rate

≤1%

Impact Value

12J/cm2

Out of Roundness Rate

≤1%

Processing Technic

Round Steel→Furnace Heating→Preforging→Roll Forging→Automatic Isothermal Transfer

→Quenching→Feeding into Temper Tank→Transporting to Warehouse

Model

20mm-160mm

Name

High Carbon Forged

Chemical Composition

C:0.60-0.70,Si:0.17-0.37,Mn:0.7-1.0,Cr:0.25,Cu:0.25,Mo:0.30

Hardness

≥55HRC

Breakage Rate

≤1%

Impact Value

15J/cm2

Out of Roundness Rate

≤1%

Processing Technic

Round Steel→Furnace Heating→Preforging→Roll Forging→Automatic Isothermal Transfer

→Quenching→Feeding into Temper Tank→Transporting to Warehouse

Model

20mm-160mm

Name

B1

Chemical Composition

C:0.52-0.65,Si:0.17-0.37,Mn:0.6-1.2,Cr:0.25max,Cu:0.25,P:0.035max,S:0.035max

Hardness

≥50HRC

Breakage Rate

≤1%

Impact Value

12J/cm2

Out of Roundness Rate

≤1%

Processing Technic

Round Steel→Furnace Heating→Preforging→Roll Forging→Automatic Isothermal Transfer→Quenching

→Feeding into Temper Tank→Transporting to Warehouse

Model

20mm-160mm

Name

B2 Forged Steel Ball

Chemical Composition

C:0.5-0.8,Si:0.17-0.37,Mn:0.6-0.8,Cr:0.9-1.1,P:0.035max,S:0.035max

Hardness

≥58HRC

Breakage Rate

≤1%

Impact Value

15J/cm2

Out of Roundness Rate

≤1%

Processing Technic

Round Steel→Furnace Heating→Preforging→Roll Forging→Automatic Isothermal Transfer→

Quenching→Feeding into Temper Tank→Transporting to Warehouse

Model

20mm-160mm

Name

B3 Forged Steel Ball

Chemical Composition

C:0.72-0.92,Si:0.17-0.37,Mn:0.7-1.0,Cr:0.5-0.9,P:0.035max,S:0.035max

Hardness

≥60-65HRC

Breakage Rate

≤1%

Impact Value

15J/cm2

Out of Roundness Rate

≤1%

Processing Technic

Round Steel→Furnace Heating→Preforging→Roll Forging→Automatic Isothermal Transfer→

Quenching→Feeding into Temper Tank→Transporting to Warehouse