Made in China Widely Used High Toughness Low Carbon Forged Grinding Balls
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- Loading Port:
- Qingdao Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25M.T. m.t.
- Supply Capability:
- 200000M.T./Year m.t./month
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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 IronⅠ | 0.5-0.65 | 0.60-1.0 | 0.15-0.37 | 0.25max | 0.04max | 0.04max |
Dp-6 | Rail IronⅡ | 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 |
- Q: How is the silicon sol precision casting part priced? What is the price per ton of casting? Such as 304 material.
- Yantai five God casting is generally 53 yuan /kg, the appearance is quite beautiful
- Q: The casting sand is going on
- Dispersed sand inclusion is common on the surface and subcutaneous of steel castings, often concentrated on the outer surface of the upper box and the inner surface of the lower case, and a few of them are inside the cast steel parts.
- Q: What method of casting does not rust? I think the sample is like oil
- The surface of a general casting is easy to rust. In order to prolong the rusting period, antirust paint or antirust oil is usually sprayed. What you said should be anti rust oil.
- Q: What is the reason for 304 stainless steel precision casting parts to be changed?
- Mainly because of the cooling shrinkage caused by internal stress caused. There is the change of temperature distribution in materials element imbalance, is typical of surface and internal, thin wall and thick wall, bottom and top.
- Q: After reaming, the roughness can reach several levels, that is to say, the sample.Casting parts in rocker arm drilling, reaming, roughness, block. After reaming, the roughness can reach several levels, that is to say, the sample.
- The finish of reaming depends on the material and the sharpness of the reamer, as well as the speed and speed of the top and bottom. Marine machine tool
- Q: The cause of fracture and why there is no toughness
- This question is too broad, see what the casting casting Oh in order to reduce the wayward cast steel, ductile iron, gray iron and white iron, you can choose the material according to their own requirements.
- Q: What should I pay attention to when designing a casting structure?
- The basic structure of unit 3 in the design of metal casting casting and its parameters are 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 casting casting; (2) the inner wall of the internal ribs and the thickness of a should be connected the outer wall thickness of 0.6 to 0.7, or as the inner wall (rib) cold slowly, cracks in the wall at the junction in the casting shrinkage; (3) to prevent generating white grey cast iron, in addition to taking measures in the process, must make the wall thickness is not too thin (some information that cast fillet at the corner of the wall thickness of 15mm or more, with metal casting casting must be in the corner, for Aluminum Alloy, metal casting magnesium alloy castings shall not be less than 3 ~ 4m; (4) because of the metal type and the core that, for To facilitate the extraction of castings and casting out type, slope casting should be suitably large than sand casting metal casting, the general should be 30% ~ 50%, it should be pointed out that in addition to the height of the slope of casting size and alloy type, wall, is also related to the casting surface position, where the cooling and contraction of the metal type the surface of casting surface can be designed from the tendency of small inclination, while casting shrinkage tend to be pressed on the surface of metal casting type should be given greater inclination.
- Q: How to cast iron and wrought iron collocation
- 2, listen: Pig beating sound boring, wrought iron beating sound loud.
- Q: Why do casting parts have air holes?
- There are many reasons for casting porosity, mainly due to:1. smelting process is unreasonable, metal liquid absorbs more gas;2. the gas in the mold invades the metal liquid;3. from the mold is more water brush, core dry;4. the casting has poor ventilation;5. ladle tools are not dry.Wait。
- 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.
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 |
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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
OKorder Financial Service
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