Mining Machinery

Cr-Mo Cast Steel Mill Liners For Large Mine Mills With HRC33~42 DF084?

Quick Details 1.Pearlitic Cr-Mo steel castings have popular & safer application in mines;
2.The castings can be used stably in large mine.
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a.??The hardness for Pearlitic CrMo Cast Steel Liners: HRc33~42 (HB310~390);

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b.??Microstructure: Pearlite;

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c.??Chemical Composition: Every melt is analysed by Spectrometer;

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d.??Dimensional Checking & Gauging: 100% check;?

1.??By visual inspection;

2.??By gauges check ;

e.??Casting Soundness:Checked by UT test as per international standard;

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f.??Surface Finish: Visual inspection after shot blasting;To achieve an acceptable level of surface texture, freedom from defects;?

g.??Reporting: Providing chemical,dimensional and hardness reports,??

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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

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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 | - |
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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.