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Chromium Alloy Steel Ball & Rod

Forged Steel BallsForged steel ball is divided into carbon grinding steel ball, manganese grinding steel ball and special alloy grinding steel ball. Diameter 20-70mm and 80-150mm steel ball are produced respectively by advanced automatic hot rolling and hot forging steel ball production line.;Casting  Balls  Products with  high hardness, low wear, good toughness and less broken ratio;Casting Steel Cylpeb has same production process and chemical composition with the casting steel ball, just the mould is different. It’s also divided into low, medium and high chrome;Hot Rolling Steel CylpebHot rolling steel cylpeb is produced by fully automatic hot rolling production line with high hardness and smooth surface. The material is same as forged steel ball which  can take place of casting steel cylpeb;Grinding steel rod TOMINE grinding rods have high content of carbon, manganese and chrome which provide product high hardness and resistance against wear and tear, featured with hardness profiles that have a equal surface and core hardness.

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Main Feature

Forged Steel Balls

TOMINE grinding balls with uniform hardness in a high efficiency due to its advanced quenching technology. In advanced, TOMINE  steel balls feature high accurate dimensions, rounded geometry shape, high hardness and good mechanical properties, wear – resistance, no deformation, no breakage.

Forged Steel Balls

Forged steel ball is divided into carbon grinding steel ball, manganese grinding steel ball and special alloy grinding steel ball. Diameter 20-70mm and 80-150mm steel ball are produced respectively by advanced automatic hot rolling and hot forging steel ball production line.

Casting  Balls

Products with  high hardness, low wear, good toughness and less broken ratio,

Casting Steel Cylpeb

Casting steel cylpeb has same production process and chemical composition with the casting steel ball, just the mould is different. It’s also divided into low, medium and high chrome.

Hot Rolling Steel Cylpeb

Hot rolling steel cylpeb is produced by fully automatic hot rolling production line with high hardness and smooth surface. The material is same as forged steel ball which  can take place of casting steel cylpeb

Grinding steel rod

TOMINE grinding rods have high content of carbon, manganese and chrome which provide product high hardness and resistance against wear and tear, featured with hardness profiles that have a equal surface and core hardness.

 

Technical Specification

1.Forged steel balls

1.TP-1 steel grinding ball

TP-1 steel grinding ball is the most commonly used one. Widely used in mines, power plants, chemical plants and mill factory’s large ball mill. Diameter is 20-150mm. And we can also customize all size of products according to clients’ demand. The main products performance as follow:

 

Chemical Composition

C(%) Si(%) Mn(%) Cr(%) Cu(%) Mo(%) P(%) S(%)
0.42-0.50 0.17-0.37 0.5-0.8 ≤0.25 ≤0.25 ≤0.3 ≤0.035 ≤0.035
Size 20-150mm(0.8inch-6inch)
 

Hardness

Serious  Hardness
Standard Hardness 48-53HRC
High Hardness 55-60HRC
Impact Value ≥15J/CM^2
Balls Number ≥20000times
Micro structure M+C(C-Carbide  M-Martensite )

 

②TP-2 steel grinding ball

TP-2 steel grinding ball  with high manganese content, impact value is more than 15J/CM^2, less wearing. Well exported all over the world. Performance as follow:

 

Chemical Composition

C(%) Si(%) Mn(%) Cr(%) Cu(%) Mo(%) P(%) S(%)
0.6-1.0 0.17-0.45 0.9-1.2 ≤0.25 ≤0.25 ≤0.3 ≤0.035 ≤0.035
Size 20-150mm(0.8inch-6inch)
 

Hardness

Serious  Hardness
Standard Hardness 50-58HRC
High Hardness 55-60HRC
Impact Value ≥15J/CM^2
Balls Number ≥20000times
Micro structure M+C(C-Carbide  M-Martensite )

③TP-3 grinding steel ball 

This grinding ball is widely used all over the world. High volume hardness and less wearing. Quality is well accepted by the customers. Please kindly check the following detailed performance.

 

Chemical Composition

C(%) Si(%) Mn(%) Cr(%) Cu(%) Mo(%) P(%) S(%)
0.7-0.9 0.17-0.37 0.7-0.8 0.4-0.6 ≤0.25 ≤0.3 ≤0.035 ≤0.035
Size 20-150mm(0.8inch-6inch)
 

Hardness

Serious  Hardness
Standard Hardness 58-63HRC
High Hardness 60-65HRC
Impact Value ≥15J/CM^2
Balls Number ≥20000times
Micro structure M+C(C-Carbide  M-Martensite )

 

TP-4 steel grinding ball 

This grinding steel ball is one new type steel ball, good toughness and no breakage. It’s the new favorite in the users. Performance as follow:

 

Chemical Composition

C(%) Si(%) Mn(%) Cr(%) Cu(%) Mo(%) P(%) S(%)
0.58-0.66 1.30-1.90 0.65-0.80 0.70-0.90 ≤0.25 ≤0.3 ≤0.035 ≤0.035
Size 20-150mm(0.8inch-6inch)
 

Hardness

Serious  Hardness
Standard Hardness 58-63HRC
High Hardness 60-65HRC
Impact Value ≥15J/CM^2
Balls Number ≥20000times
Micro

structure

M+C(C-Carbide  M-Martensite )

 

Diameter Tolerance(mm) 20-25mm 30-60mm 70-90mm 100-150mm
±1 ±1.5 +3,-2 +3,-3
Roundness tolerance(%) ≤1% ≤1% ≤1.5% ≤2%

 

2.Casting Balls

Chemical Composition C(%) Si(%) Mn(%) Cr(%) Cu(%) Mo(%) P(%) S(%)
2.0-3.3 ≤1.2 0.3-1.5 7.0-20.0 ≤1.2 ≤3.0 ≤0.10 ≤0.10

 

High Chrome casting steel ball

 

Chemical Composition

C(%) Si(%) Mn(%) Cr(%) Cu(%) Mo(%) P(%) S(%)
2.0-3.3 ≤1.2 0.3-1.5 7.0-20.0 ≤1.2 ≤3.0 ≤0.10 ≤0.10
 

Hardness

Serious  Hardness
Standard Hardness 53-63HRC
High Hardness 58-65HRC
Impact Value ≥3.5J/CM^2
Balls Number ≥12000times

 

Medium chrome casting steel ball

Middle chrome grinding balls chrome concentration is 4-6%, hardness ≥ HRC 48, Middle chrome grinding ball have a better performance than complex alloy ball.

 

 

Chemical Composition

C(%) Si(%) Mn(%) Cr(%) Cu(%) Mo(%) P(%) S(%)
2.1-3.6 ≤1.5 0.3-1.5 4.0-6.0 ≤0.80 ≤1.0 ≤0.10 ≤0.06
 

Hardness

Serious  Hardness
Standard Hardness 47-52HRC
High Hardness 50-53HRC
Impact Value ≥2J/CM^2
Balls Number ≥12000times

 

Low chrome casting steel ball

Chrome Concentration is 1-3%, hardness ≥ HRC 45, this steel ball is called low chrome grinding balls, which is made by smelting in intermediate frequency electric furnace, metal mould or sand casting process.

3.Casting Steel Cylpeb

 

Chemical Composition

C(%) Si(%) Mn(%) Cr(%) Cu(%) Mo(%) P(%) S(%)
2.1-3.6 ≤1.5 0.3-1.5 1.0-3.0 ≤0.80 ≤1.0 ≤0.10 ≤0.10
 

Hardness

Serious  Hardness
Standard Hardness 58-63HRC
High Hardness 60-65HRC
Impact Value ≥15J/CM^2
Balls Number ≥20000times

 

 Size of casting steel cylpeb

Dia*Length(mm) Dia*Length(mm) Dia*Length(mm) Dia*Length(mm)
10*10(12) 12*12(14) 14*14(16) 16*16(18)
18*18(20) 20*25 25*30 30*35
35*40 40*45 45*50 50*55

Performance of the steel cylpeb

Series Hardness Micro structure Falling number Impact value
Low Chrome 45-50HRC P+C(P-Pearlite  C-Carbide) ≥8000times ≥1J/CM^2
Medium Chrome 48-53HRC M+C(C-Carbide  M-Martensite ) ≥1000times ≥2J/CM^2
High Chrome Windy quenching: 53-58HRC

Oil quenching: 58-65HRC

M+C(C-Carbide  M-Martensite ) ≥12000times ≥3.5J/CM^2

 

Chemical composition of casting steel cylpeb

Series

 

C(%) Si(%) Mn(%) Cr(%) Cu(%) Mo(%) P(%) S(%)
Low Chrome 2.1-3.6 ≤1.5 0.3-1.5 1.0-3.0 ≤0.80 ≤1.0 ≤0.10 ≤0.10
Medium Chrome 2.1-3.6 ≤1.5 0.3-1.5 4.0-6.0 ≤0.80 ≤1.0 ≤0.10 ≤0.10
High Chrome 2.0-3.3 ≤1.2 0.3-1.5 7.0-20.0 ≤0.80 ≤1.0 ≤0.10 ≤0.10

 

4.Hot Rolling Steel Cylpeb

Size of hot rolling steel cylpeb

Dia*Length(mm) Dia*Length(mm) Dia*Length(mm) Dia*Length(mm)
20*30 25*35 30*40 35*45
40*50 45*55 50*60 55*65
60*70

 

Chemical composition is same with forged steel balls

5. Grinding steel rod

Chemical Composition of the grinding rod

Series C(%) Si(%) Mn(%) Cr(%) Cu(%) Mo(%) P(%) S(%)
Carbon steel grinding rod 0.42-0.50 0.17-0.37 0.5-0.8 ≤0.25 ≤0.25 ≤0.3 ≤0.035 ≤0.035
 

Manganese steel

grinding rod

0.48-0.56 0.17-0.37 0.6-1.0 ≤0.25 ≤0.25 ≤0.3 ≤0.035 ≤0.035
0.57-0.65 0.17-0.37 0.7-1.0 ≤0.25 ≤0.25 ≤0.3 ≤0.035 ≤0.035
0.62-0.70 0.17-0.37 0.9-1.0 ≤0.25 ≤0.25 ≤0.3 ≤0.035 ≤0.035
Special steel grinding rod 0.72-0.80 0.17-0.37 0.8-0.9 0.5-0.6 ≤0.25 ≤0.3 ≤0.035 ≤0.035

 

Diameter(mm) Length

(mm)

HRC Impact value Drop times Breakage rate Straightness
50-160mm 2-6m 45-60HRC >12j/cm^2 >15 ≤1% 2/1000

 

Solution
Industry Application