High Cr Grinding Media Cylpebs For Power Plants,Wet-Grinding Process
Quick Details
1. Material:Cr15.
2. Hardness: More than HRC60.
Φ60mm High Cr Cast Balls
1. Hardness difference from surface to center is less than HRC3.
2. Hardness:More than HRC60.
3. Surface of castings is free from burnt sand & smooth.
4. It is free from hard spot, visible injurious defects such as blow hole,porosity, shrinkage, cracks, cold-shuts.
1. Specification available
A. Cast Balls
(1) Diameter (mm): φ140, φ125, φ110, φ100, φ90, φ80, φ70, φ60, φ50, φ40, φ30, φ20, φ17, φ15
B. Cast Cylpebs
(1.2)Diameter (mm): φ35×40, φ30×35, φ25×30, φ20×25, φ18×18, φ16×16, φ15×20, φ14x14,
φ12×16, φ12x12, φ10×12, φ10×10, φ8×8
(2) General Mechanical Property
| Materials | Hardness | Impact value | Wear in Cement Mills (g/mt) | Application Field |
| High Cr Cast Iron | ≥HRC60 | ≥4J | 25-60 | The dry-grinding process in cement works, power plants and wet-grinding process in mine; |
| Low Cr Cast Iron | ≥HRC46 | ≥3J | ≤130 | The dry-grinding process in cement works, power plants and wet-grinding process in mines |
(3). The Detailed Information about Diameter 60mmCast Balls with Different Cr Content
| Composition (%) | C | Si | Mn | Cr | P | S | Hardness (HRC) | Wear Rate in Gold Mine |
| Low Cr Cast Balls | 2.0~3.0 | 0.5~1.5 | ≤0.50 | 1.5~2.5 | ≤0.07 | ≤0.07 | 46~55 | About 1000g/MT |
| Mid Cr Cast Balls | 2.0~3.5 | ≤1.0 | 0.3~1.2 | 4.0~6.0 | ≤0.10 | ≤0.10 | ≥50 | About 870g/MT |
| Cr12 Cast Balls | 2.0~3.0 | ≤1.2 | 0.7~2.0 | 10~12 | ≤0.06 | ≤0.06 | ≥55 | ≤820g/MT |
| Cr15 Cast Balls | 2.0~3.0 | ≤1.2 | 0.7~2.0 | 14~16 | ≤0.06 | ≤0.06 | ≥58 |
| Cr20 Cast Balls | 2.0~3.5 | ≤1.0 | 0.5~1.5 | 17~23 | ≤0.06 | ≤0.06 | ≥60 | ≤760g/MT |
C. Forged Steel Balls
⑴. Diameter (mm): φ150, φ140, φ130, φ120, φ110, φ100, φ90, φ80, φ70, φ60, φ50, φ40
(2). General Mechanical Property
| Composition (%) | C | Si | Mn | Cr | P | S |
| Type One Material | 0.57~0.65 | 0.17-0.37 | 0.70-0.80 | 0.28-0.60 | ≤0.04 | ≤0.04 |
Ⅰ. For Type One Material
| Size | Surface | Core |
| Φ40~60mm | HRC50~60 | HRC50~60 |
| Φ70~80mm | HRC50~60 | HRC50~60 |
| Φ90~100mm | HRC50~60 | HRC50~60 |
| Φ110~140mm | HRC50~60 | HRC50~60 |
Ⅱ. For Type Two Material
| Composition (%) | C | Si | Mn | Cr | V | P | S | Hardness |
| Type Two Material | 0.7-0.9 | 0.45-0.75 | 0.70-1.25 | 0.11-0.40 | 0.05-0.12 | ≤0.04 | ≤0.04 | HRC55~65 |
D. Holt-rolled Steel Balls
(1). Diameter (mm): φ150, φ120, φ100, φ90, φ80, φ70, φ60, φ50, φ40, φ30, φ25
(2) General Mechanical Property (Refer to GB8649-88)
| Composition(%) | C | Si | Mn | Cr | Mo | Ni | Cu | V | Co | Hardness |
| Hot-rolled Steel Balls | 0.5 ~ 1.0 | 0.25 ~ 1.60 | 0.4 ~ 1.2 | ≤ 1.0 | ≤ 0.5 | ≤ 0.5 | ≤ 0.5 | ≤ 0.04 | ≤ 0.09 | ≥HRC58 |
2. Size Tolerance
| Item | Specification (mm) |
| Φ15~Φ50 | Φ60~Φ150 |
| Diameter tolerance | +1.5 -1.0 | +2.0 -1.0 |
3. Package
Packaged by flexible container bags weighing about 1000kg or in iron drums weighing about 850kg.
In the recent 20 years, our liners have been widely used in large,medium and small ball mills in Chinese power generation,mining,cement,Chemical engineering and metallurgical industries and super fine pulverizing equipments.It is the only recommended liner product in the latest standard of the electric-power industry in China.
Technical Parameters
Wuxi Orient Anti-wear Engineering Co.,Ltd.
Chemical Composition & Mechanical Property of Wear-resistant Castings
| Item | Cr-Mo Alloy Steel I | Cr-Mo Alloy Steel II | Cr-Mo Alloy Steel III | High Cr white iron | High Cr Alloy Steel | High Manganese Steel | Ni-Hard cast iron |
| C | 0.30~0.50 | 0.65~0.90 | 0.40~0.90 | 2.40~3.20 | 1.1~2.2 | 0.90~1.30 | 2.40~3.60 |
| Si | 0.50~1.20 | ≤0.75 | 0.70~1.20 | 0.60~1.20 | 0.60~1.20 | ≤0.08 | ≤0.80 |
| Mn | 0.40~1.20 | 0.50~1.20 | 0.60~1.00 | 0.50~1.00 | 0.50~1.00 | 11.00~18.00 | ≤2.0 |
| Cr | 1.70~2.50 | 1.50~2.50 | 4.00~7.00 | 12.00~30.00 | 11.00~30.00 | 1.50~2.50 | 1.5~10 |
| S | ≤0.04 | ≤0.06 | ≤0.04 | ≤0.04 | ≤0.04 | ≤0.04 | ≤0.15 |
| P | ≤0.04 | ≤0.06 | ≤0.06 | ≤0.06 | ≤0.06 | ≤0.06 | ≤0.15 |
| Mo | ≤0.5 | ≤0.5 | ≤0.5 | 0.10~3.0 | 0.10~3.0 | ≤1.0 | ≤0.10 |
| Cu | 0.10~0.60 | ≤0.25 | 0.20~0.40 | 0.10~1.00 | 0.10~1.00 | - | - |
| Ni | ≤0.50 | ≤0.30 | 0~0.30 | 0~0.30 | 0~0.30 | - | 3.3~10 |
| Re | ≤0.02 | ≤0.02 | ≤0.02 | - | - | - | - |
| Equivalent Specifications | DL/T 681-1999 GB/T26651-2011 | AS 2074 L2B Mod | DL/T 681-1999 | GB/T 8263-1999 AS 2027 Cr27 AS 2027 CrMo 15/3 AS 2027 CrMo 20/2/1 ASTM A532 Class III type A 25% Cr ASTM A532Class II type B 15% Cr-Mo BS 4844 3E DIN1695 NFA32401. | GB/T 5680-1998 DL/T 681-1999 JIS G 5153-1999 ASTM A 128 DIN GX120Mn12 AFNOR:Z120Mn12 | GB/T 8263-1999 AS 2027/Ni-Cr1-550 AS 2027/Ni-Cr2-500 AS 2027/Ni-Cr4-500 AS 2027/Ni-Cr4-600 AS 2027/Ni-Cr4-630 ASTM A 532 1-A,B,C,D ASTM A 532 2-A,B,C,D,E ASTM A 532 3-A |
| Material Type | Martensite Steel | Martensite or Pearlitic Cr Mo Steel | Martensite Steel | Martensite matrix | Austenitic Mn Steel | - |
| Hardness | HRc≥48 | HB470 & HB 321~370 | HRc≥50 | HRc≥56 | HB≤300 | HRc≥56 |
| Impact Value | Ak≥40J | - | Ak≥10J | Ak≥4J | Ak≥80J | - |
Our foundry has complete melting,heat treatment and test equipments,such as mid-frequency induction electrical furnaces,quenching and tempering furnaces,blast shot,spectrometer,Rockwell and Brinell Hardness tester,impactor,UT tester and metallographic microscope.We achieved the certificate of quality management system ISO 9001:2008.We have been exporting castings to oversea markets,such as Brazil, Australia and South Africa.
