Forged Steel Grinding Ball DIA0.75’’-DIA6’’ with High Hardness and Good Wear-resistance

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Forged Steel Grinding Ball DIA0.75’’-DIA6’’ with High Hardness and Good Wear-resistance

1. Specification for Forged Steel Grinding Ball DIA0.75’’-DIA6’’ with High Hardness and Good Wear-resistance

Diameter: 20mm-150mm(0.75''-6'')

Hardness: 55HRC-65HRC

Breakage Rate<0.5%

Impact Toughness>12J/CM2

Certification: ISO9001:2008

Application: Metal Mines, Cement Plants, Chemical Industries, Power Stations

2. Type and Chemical Composition for Forged Steel Grinding Ball DIA0.75’’-DIA6’’ with High Hardness and Good Wear-resistance

Name

Material

C

Mn

Si

Cr

S

P

CMAX-1

50Mn

0.48-0.56

0.70-1.0

0.17-0.37

≤0.25

≤0.035

≤0.035

CMAX-2

60Mn

0.57-0.65

0.70-1.0

0.17-0.37

≤0.25

≤0.035

≤0.035

CMAX-3

65Mn

0.60-0.70

0.90-1.2

0.17-0.37

≤0.25

≤0.035

≤0.035

CMAX-4

B2

0.70-0.85

0.70-0.80

0.17-0.37

0.2-0.7

≤0.03

≤0.03

CMAX-5

75SiMn

0.70-0.90

0.70-1.20

0.4-0.8

≤0.25

≤0.03

≤0.03

CMAX-6

Wear-resistant Alloy

0.50-0.65

0.4-1.0

1.4-1.8

0.9-1.2

≤0.03

≤0.03

3. Physical Property for Forged Steel Grinding Ball DIA0.75’’-DIA6’’ with High Hardness and Good Wear-resistance

Name

Material

Impact Test(Ak.J/cm²)

Endurance Test Times(5m/T)

Surface Hardness

(Φ25mm- Φ60mm)

Core Hardness

(Φ25mm- Φ60mm)

Surface Hardness

(Φ70mm- Φ100mm)

Core Hardness

(Φ70mm- Φ100mm)

Breakage

CMAX-1

50Mn

≥12

≥10000

≥56

≥35

≥56

≥28

<1%

CMAX-2

60Mn

≥13

≥10000

≥58

≥38

≥58

≥29

<1%

CMAX-3

65Mn

≥15

≥12000

≥60

≥42

≥60

≥30

<1%

CMAX-4

B2

≥17

≥12000

≥60

≥52

≥60

≥50

<1%

CMAX-5

75SiMn

≥16

≥12000

≥60

≥50

≥60

≥48

<1%

CMAX-6

Wear-resistant Alloy

≥17

≥12000

≥60

≥54

≥60

≥52

<1%

4. Weight and Microstructure for Forged Steel Grinding Ball DIA0.75’’-DIA6’’ with High Hardness and Good Wear-resistance

Norminal Diameter

Diametrical Tolerance(mm)

Approx Weight of Single Ball(kg)

Average Number of One MT

Microstructure

25mm/1''

+1.5,-0.5

0.064

15625

M+B+C

(M-Martensite;B-Bainitic;C-Carbide)

30mm/1.25''

+1.5,-0.5

0.11

9090

40mm/1.5''

+2.0,-1.0

0.26

3846

50mm/2''

+2.0,-1.0

0.51

1961

60mm/2.5''

+3.0,-2.0

0.89

1124

70mm/2.75''

+3.0,-2.0

1.4

714

80mm/3.25''

+3.0,-2.0

2.1

476

90mm/3.5''

+3.0,-2.0

3

333

100mm/4''

+4.0,-3.0

4.1

244

110mm/4.5''

+4.0,-3.0

5.47

283

120mm/4.75

+4.0,-3.0

7.1

141

130mm/5''

+4.0,-3.0

9.02

111

5. Packing for Forged Steel Grinding Ball DIA0.75’’-DIA6’’ with High Hardness and Good Wear-resistance

5. Testing for Forged Steel Grinding Ball DIA0.75’’-DIA6’’ with High Hardness and Good Wear-resistance

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Q:How much is the amount of electrophoretic paint per square meter used in the casting?
It was a very simple question, and it was complicated by what you said.
Q:What are the design considerations for casting parts?
Two: the basic structure unit in the design of metal casting type and the parameters selected, usually should also pay attention to: (1) because of the metal type heat quickly, so the metal type casting minimum wall thickness should be bigger than the sand casting, metal type casting alloy minimum wall, different size of castings see table 1.1-31 thick can be selected; (2) the inner wall of the casting internal ribs and the thickness of wall thickness should be 0.6-0.7 connected, or as the inner wall (rib) cold slowly, cracks in the wall at the junction in the casting shrinkage;
Q:Heat treatment process and purpose of casting parts
Methods: artificial aging or natural aging (also called normalization) treatment.Artificial aging: heating to 2-3 Baidu, it is best to apply mechanical vibration, and maintain a period of time.
Q:When the blank is a casting, the margin is evenly distributed, how should rough machining? Twenty
Problem one,1, according to drawings, castings, material requirements and machine power, choose the right diameter of roughing tools, and can process this material blade type.2, according to the actual size of the casting blank, calculate the number and path of the knife, pay attention to small cutting depth, large feed, cutting width, to ensure that the tool diameter 80 - 90%, the amount of not full knife cutting, this tool and machine tool damage.Question two,If they can not change the casting blank allowance under the condition that the quantity large diameter cutter, such as milling cutter main angle 7560 degrees can give reasonable processing parameters, the same cutting depth should not be too large, because in the same machine power, tool diameter increases, cutting depth will need smaller.
Q:What is the ejection angle of the die casting (Tan Gang)?
Because after the wax, wax parts will have a slight contraction, which is good for demoulding. Many moulds don't do the ejection angleEspecially deep hole, and customers to discuss, generally take 0.3-1 degrees is enough
Q:Domestic large steel castings factory which is better, recommend!
Do the casting manufacturer of large steel castings, Hunan Jinsha heavy industry science and technology limited company, heard that their professional only more than 1 tons of steel castings, anyway, 150T just big, the company won a lot of foundry industry patents should be good.
Q:Casting parts need to be subjected to the kind of heat treatment after the weldment is finished
This is difficult to say, the key is to see the specific parts and components, the final mechanical performance requirements.For example, gray cast iron, usually graphite annealing, to heat treatment annealing, surface quenching and so on, ductile iron can be a variety of annealing, normalizing, quenching and isothermal quenching, surface treatment, chemical treatment and so on, in a word, heat treatment of steel can usually, nodular cast iron can do. Malleable cast iron and vermicular cast iron are often subjected to graphitization annealing and stress relieving annealing, while wear-resistant cast irons often undergo quenching + low temperature tempering, and so on.Welding is the case, such as bearing steel welding must be quenched + low temperature tempering, machine spindle welding (repair welding) must be quenched and tempered treatment, and so on. Of course, if it is a general weld, there is no need for heat treatment or, at most, stress relieving annealing.
Q:What is normalizing, annealing, tempering, quenching? What is the difference between forging parts and casting parts?
For the nodular cast iron, the hardness, strength and wear resistance are improved, such as used in the manufacture of automobile, tractor, diesel engine crankshaft, connecting rod and other important parts. A normalizing and hypereutectoid ball annealing before, can eliminate the mesh two cementite spheroidizing annealing, to ensure that all spheres of cementite. Annealing is a metal heat treatment process, which means the metal is slowly heated to a certain temperature, sufficient for a long time, and then cooled at an appropriate speed. The purpose is to reduce hardness, improve machinability, eliminate residual stress, stabilize size, reduce deformation and crack tendency, refine grain, adjust microstructure and eliminate tissue defects. Its purpose: (1) reduce hardness and improve machinability; (2) eliminate residual stress, stabilize size, reduce deformation and crack tendency; (3) refine grain, adjust microstructure and eliminate tissue defects. In production, annealing process is widely used.
Q:Which surface is coarser for cast iron or cast steel castings? Why?
Roughness mainly depends on the surface roughness on the surface of the sand.
Q:Selection of hydraulic press is the casting parts and steel plate welding, how to choose?
Casting parts in one shape, the overall processing in this regard than steel plate welding better. The same price is much more expensive than steel. Large hydraulic presses seldom have casting parts.
CGBM established in 1995, the largest and most specialized casting and forged products supplier in China. Min products are grinding media balls, grinding rods, cylpebs, mill liners and steel flanges, with specifications all reaching international standards and annual production capacity is over 150,000tons.

1. Manufacturer Overview

Location Zhangqiu, China
Year Established 1995
Annual Output Value 150,000M.T.
Main Markets 40%,South America; 30%,South Africa; 15%,Southeast Asia; 5%, Europe Area; 5%, North America; 5%, Other Areas
Company Certifications ISO9001:2008;SGS Test Report

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Qingdao;Tianjin
Export Percentage
No.of Employees in Trade Department 25
Language Spoken: English, Chinese
b)Factory Information  
Factory Size: 68,000m2
No. of Production Lines 15
Contract Manufacturing
Product Price Range $700/M.T.-$1200/M.T.