Special Cast and Forged Grinding Balls
1.Feature:
1) In general, rolling and forged ball is famous for high hardness: surface hardness to 58-68 HRC, volume hardness of 56-63HRC;
2) impact toughness high: impact toughness more than 12 J / cm2;
3) broken rate is low: the actual broken rate is not higher than 1%;
4) loss of grinding forged steel ball round rate is 50-400 g/ton
2.Chemical Composition of Forged Grinding Ball
Based on material,the forged steel balls are defined into 7 brands. And The chemical composition is shown in the following:
Brand
|
Material
|
C
|
Mn
|
Si
|
Cr
|
S
|
P
|
V
|
TITLE-1
|
50MN
|
0.48-0.56
|
0.70-1.0
|
0.17-0.37
|
≤0.25
|
≤0.035
|
≤0.035
|
|
TITLE-2
|
60MN
|
0.57-0.65
|
0.70-1.0
|
0.17-0.37
|
≤0.25
|
≤0.035
|
≤0.035
|
|
TITLE-3
|
65MN
|
0.60-0.70
|
0.90-1.20
|
0.17-0.37
|
≤0.25
|
≤0.035
|
≤0.035
|
|
TITLE-4
|
75Mn
|
0.72-0.92
|
0.90-1.20
|
0.17-0.37
|
0.1-0.25
|
≤0.035
|
≤0.035
|
|
TITLE-5
|
75MnCr(B2)
|
0.72-0.85
|
0.7-0.8
|
0.17-0.37
|
0.42-0.85
|
≤0.03
|
≤0.03
|
|
TITLE-6
|
75SiMn
|
0.70-0.90
|
0.7-1.2
|
0.4-0.8
|
≤0.25
|
≤0.03
|
≤0.03
|
|
TITLE-7
|
Wear-resistant Alloy
|
0.5-0.65
|
0.4-1.0
|
1.4-1.8
|
0.9-1.2
|
≤0.03
|
≤0.03
|
0.1-0.2
|
3.Chemical Composition of Casting Grinding Ball
Based on material,the casting steel balls are defined into 6 brands. And The chemical composition is shown in the following:
Name
|
Model
|
Material
|
C
|
Si
|
Mn
|
Cr
|
S
|
P
|
TITLE-8
|
High Chrome
|
Cr-22-32%
|
2.0-2.8
|
≤1.0
|
0.5-2.0
|
22-32
|
≤0.06
|
≤0.08
|
TITLE-9
|
Cr-17-22%
|
2.0-2.8
|
≤1.0
|
0.5-2.0
|
17-22
|
≤0.06
|
≤0.08
|
TITLE-10
|
Cr-14-17%
|
2.2-3.0
|
≤1.0
|
0.5-2.0
|
15-17
|
≤0.06
|
≤0.08
|
TITLE-11
|
Cr-10-14%
|
2.2-3.2
|
≤1.0
|
0.5-2.5
|
11-14
|
≤0.06
|
≤0.08
|
TITLE-12
|
Medium Chrome
|
Cr-5-10%
|
2.1-3.2
|
≤1.2
|
0.5-1.5
|
5-10
|
≤0.06
|
≤0.08
|
TITLE-13
|
Low Chrome
|
Cr-1.0-5%
|
2.2-3.5
|
≤1.2
|
0.5-1.5
|
1.5-3
|
≤0.06
|
≤0.08
|
4.Specification of Grinding Ball
5.Specification of Casting Grinding Ball
1)High chrome cast balls
Size: 20mm-120mm
Hardness:HRC58-65; Chrome content:11-14%
2)Low chrome cast balls
Size: 20mm-120mm
Hardness:HRC45-55; Chrome content:1-3.5%
6.Main Process of Forged Steel Ball
(1)Raw material.(2)Cutting.(3)Heating.(4)Forging.(5)Quenching.(6)Tempering.(7)Testing.(8)Qualified Products.(9)Packing
7.Main Process of Casting Grinding Ball
(1)Raw material.(2)Scientific Proportioning.(3)Electric Furnace Smelting.(4)Assay Before Furnace.(5)Mould Forming.(6)Polishing.(7)Heat Treatment.(8)Qualified Products.(9)Packing
8.Applied Field
1).Cement Plants 2).Mines 3).Power stations 4).Chemical Industries 5).Grinding Mill, Ball mill, Coal mill
9. Products Name
Grinding Ball, Steel Ball, Grinding Rod, Grinding Bar, Grinding Cylpebs, Ball Mill Liner Plate, Grinding Steel Ball, Grinding Iron Ball, Mill Ball, Forged Steel Ball, Forging Steel Ball, Forged Grinding Ball, Forging Grinding Ball, Forged Ball, Forging Ball, Forged Grinding Steel Ball, Forged Steel Grinding Ball, Cast Grinding Ball, Casting Grinding Ball, Casted Grinding Ball, Cast Iron Ball, Casting Ball, Cast Ball, Casted Ball, High Chrome Cast Ball, High Chrome Casting Ball, High Chrome Cast Grinding Ball, High Chrome Cast Iron Ball, High Chrome Ball
10.Packing
1) Container Bag: Dia20mm-Dia150mm 1000Kgs/Container Bag (GWt:1002Kgs)
2) Steel Drums: Dia20mm-Dia80mm 900Kgs/Drum (GW: 915Kgs)
Dia90mm-Dia150mm 850Kgs/Drum (GW: 865Kgs)