Made in China Widely Used High Toughness Low Carbon Forged Grinding Balls

Ref Price:
Loading Port:
Qingdao Port
Payment Terms:
TT or LC
Min Order Qty:
25M.T. m.t.
Supply Capability:
200000M.T./Year m.t./month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

Production Process of Widely Used High Toughness Low Carbon Forged Grinding Balls made in China

    The production of casting steel balls is to melt the waste raw material such as waste steel, waste iron with medium frequency induction furnace. In the process of melting, add suitable amount of precious metal alloys(such as Ferrochrome, ferromanganese, ferro-vanadium ) to the furnace. When the temperature of the molten iron is more than 1550°C and can meet the requirements of the technics,pour the qualified molten iron to steel moulds or steel production line moulds. The content of chrome of high chrome alloy casting steel balls is ≥10.0%, the content of carbon is 1.80%-3.20%.      Since the national standards require the HRC≥58, ak≥3.0J/cm2, to up to this hardness, the high chrome balls must be quenched and tempered. After quenched and tempered, the hardness(HRC≥60) is higher, the wear-resistance is more than 2.5 times of forging balls.

 

Production Technics of Widely Used High Toughness Low Carbon Forged Grinding Balls made in China

    Raw material(waste steel,waste iron,iron alloy)factory inspection→blending→melt→composition inspection→casting→cooling and solidification→demould→clean and polish→inspection→quenching(increase hardness)→hardness inspection→tempering(eliminate stress)→inspection→warehousing

 

Chemcial Elements of Widely Used High Toughness Low Carbon Forged Grinding Balls made in China

Type and Chemical Composition of Forged Grinding Balls 

Name

Chemical Elements (%)

C

Si

Mn

Cr

Mo

Cu

P

S

Low Cr Balls

2.2-2.5

≤1.2

0.5-1

0.8-1.8

0.6-1

≤1

≤0.05

≤0.05

Middle Cr Balls

2.2-3.3

≤1.2

0.5-1

3-6

0.6-1

≤1

≤0.05

≤0.05

Normal High Cr

1.6-3.3

≤1.0

0.5-1

10-13

0.8-1

≤0.6

≤0.05

≤0.05

Special High Cr

2.0-3.3

≤1.o

2.1-3

15-23

0.8-1

≤0.6

≤0.05

≤0.05

 

Type and Chemical Composition of Widely Used High Toughness Low Carbon Forged Grinding Balls made in China

Brand

Grade

C

Mn

Si

Cr

S

P

Dp-1

50Mn

0.48-0.56

0.70-1.0

0.17-0.37

0.25max

0.035max

0.035max

Dp-2

60Mn

0.57-0.65

0.70-1.0

0.17-0.37

0.25max

0.035max

0.035max

Dp-3

65Mn

0.6-0.7

0.9-1.2

0.17-0.37

0.25max

0.035max

0.035max

Dp-4

75MnCr

0.70-0.85

0.7-0.8

0.17-0.37

0.2-0.7

0.03max

0.03max

Dp-5

Rail Iron

0.5-0.65

0.60-1.0

0.15-0.37

0.25max

0.04max

0.04max

Dp-6

Rail Iron

0.60-0.8

0.90-1.2

0.20-0.40

0.20-0.8

0.07max

0.03max

 

Weight and Microstructure of  Widely Used High Toughness Low Carbon Forged Grinding Balls made in China

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

 

 

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:What should I pay attention to when designing a casting structure?
1 of the casting in metal mold cooling was faster than sand, metal type and let, thus casting in metal mold casting, casting stress generated in the ratio of sand casting to crack tendency is also large, but also prone to misrun and cold lap, white (for casting casting). Defect. Usually: (1) in the prevention of metal casting casting crack aspect should pay attention to the following problems: the structure of A in wall thickness, wall transition and connection to the ease, corner fillet appropriate requirements such as should be more strict than sand casting; B should be connected vertically connected with the wall to tilt C; for the weak parts of the structure should be set to strengthen ribs, bosses, to prevent casting; D should minimize the obstacle free shrinkage of the boss, casting rib, flange and other prominent part; E in the casting arrangement of ribs, but also should consider its influence on the casting shrinkage.
Q:The difference between sheet metal and casting parts
Casting parts are made by casting (followed by a variety of processing), the shape can be simple, can also be very complex, usually large parts, as a base, bed, work table, and so on, good seismic performance.
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 casting parts used to test shrinkage holes?
2. x ray. This method can do nondestructive testing, but the cost is higher. Generally, high castings are required.
Q:Domestic large steel castings factory which is better, recommend!
At least spend money on research and development, then the quality should be all right.
Q:General aluminum alloy die casting or casting box and other parts,
There are several casesThe first hole with a diameter of less than 4MM is generally not done, or as a hole location only for a period of less than 10MM.Second for the big hole, some of the reasons for the holding force, we must increase the slope, direct tapping is unlikely, so it still needs post-processingThird for products with high tightness requirements, some cores need to be made even if they are very small, so they can be tapped directlyFourth, some due to technical requirements, regardless of the size of each other's requirements must be made, there is no wayThe above methods are common, and they will encounter many small problems in actual production.
Q:The casting defects of pores, trachoma how to repair?
Airhole above 2mm recommended LT101 casting defect repair agent. If repair quality requirements, high availability LT111 iron repair agent, LT112 steel repair agent, LT113 aluminum repair agent, LT114 copper repair agent.
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.
Q:How to improve the surface roughness of casting parts?
One is to improve the accuracy of the model; the two is to improve the molding sand mesh. How much is the other relationship?.
Q:Why should pig iron be used in casting?
Not necessarily is iron, steel, stainless steel, aluminum, copper can be cast iron, is cheaper, and better properties of cast out, for example, is not easy to rust, high strength, easy processing and so on, and is the only iron iron cast out, it is not necessarily the raw pig iron, plus some other material
Grinding King are leading manufacturer and professional exporter of grinding media balls in China.with the annual output of 50,000 to 70,000 metric tons.Our products grinding media balls are mainly exported to more than 20 countries and regions in the world, such as Japan,Korea,Africa,Zambia,Malaysia,Phillipines,Indonesia,Mongolia,Australia,UAE,Chile etc.

1. Manufacturer Overview

Location Shandong, China
Year Established 2000
Annual Output Value Above US$100 Million
Main Markets Africa; Mid East;South Asia;Southeast Asia;Eastern Asia;Southern Europe
Company Certifications ISO9001;IS014001 Certificate

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Qingdao Port; Tianjin Port; Shanghai Port
Export Percentage
No.of Employees in Trade Department 6-10 People
Language Spoken: English;Chinese;
b)Factory Information  
Factory Size: Above 40,000 square meters
No. of Production Lines Above 10
Contract Manufacturing Grinding Ball; Grinding Rod; Cylpeb; Grinding Media; Ball Mill Ball
Product Price Range Average