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

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Product Description:

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:What is normalizing, annealing, tempering, quenching? What is the difference between forging parts and casting parts?
According to the requirements of the workpiece annealing, there are many kinds of annealing process specifications, such as full annealing, spheroidizing annealing and stress relieving annealing. Steel the steel quenching is heated to the critical temperature Ac3 (hyposteel) or Ac1 (hypereutectoid steel) above a certain temperature, holding time, so that all or part of 1 Austenitic, then the cooling rate is greater than the critical cooling rate of fast cooling to below Ms (or near Ms isothermal) of martensite the body (or bainite transformation) heat treatment process. Aluminum alloys, copper alloys, titanium alloys, tempered glass and other materials are usually treated by solid solution or heat treatment with rapid cooling process. Tempering is a heat treatment process where the workpiece is hardened and heated to a temperature below AC1, which remains cool for a certain period of time and then cools to room temperature. Tempering generally followed by quenching, the purpose is: (a) to eliminate the residual stress caused by quenching, prevent deformation and cracking; (b) hardness, strength, plasticity and toughness of workpiece is adjusted, to use performance requirements; (c) the size of organization and stability, ensure the accuracy improvement; (D) and to improve the processing performance. Tempering is therefore the last important step in obtaining the desired properties of the workpiece. According to the tempering temperature range, tempering can be divided into low temperature tempering, medium temperature tempering and high temperature tempering. This answer is recommended by the questioner
Q:Casting pieces of plastic processing requirements can not fall off the skin,
The pre treatment temperature and the quality of plastic powder are likely to be problems
Q:How much is the casting allowance in the design of the casting machine and the drawing?
Casting parts do not need to provide drawings of casting blank, the casting factory according to your drawings in the required surface will be sufficient allowance, and the rest of the size according to the mechanical design manual and the casting manual can be found. The general foundry casting technology division will mark put shrinkage and the allowance of the map in your chart (usually with the red pen) for the production of wood or other material wood workers die drawings.
Q:Which surface is coarser for cast iron or cast steel castings? Why?
The surface of the steel is more rough, because the coating sand cast steel cast iron particles compared with graphite coating degree, the other one is to get a better air permeability and collapsibility of sand, the compaction degree is smaller than iron. Roughness mainly depends on the surface roughness on the surface of the sand.
Q:Casting parts in rocker arm drilling, reaming, roughness, block.
Radial drilling machine can achieve boring, reaming function, but as much as you want, according to your requirements and material to determine!
Q:We are small castings, the need for surface treatment of shot blasting machine, about how much?
according to the comprehensive consideration of factors such as yield, size of workpiece commonly used on the market the crawler shot blasting machine has Q324, Q326, Q328, Q3210, and each time the amount of their treatment were 125KG, 200KG, 400KG, 600KG, the specific use of what types also need to be determined according to the actual situation
Q:How about casting parts for a year?
2, heat aging (artificial aging), also known as stress annealing, is to heat the casting to 550-650 degrees, insulation 2 - 4h, with the furnace cooling to 150 - 200T, and then baked.
Q:Stainless steel mirror polishing precision casting parts is very difficult, 20
Buffing should be better, to see how your embryo, but a bit difficult
Q:The casting defects of pores, trachoma how to repair?
Metal repair can be used to fill the repair. Airhole 2mm following LT102 recommend the use of liquid metal repairing agent.
Q:Casting parts by shot blasting, spray painting, baking after the formation of very small rust spots, how to solve ah?
The first process is very important. Shot blasting must be thorough. The solution is to wipe the surface of the paint with a release. Re shot
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.