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2.The castings can be used stably in large mine.
Pearlitic Cr-Mo Alloy Steel Liners Using In AG Mill
a. The hardness for Pearlitic CrMo Cast Steel Cap: HRc33~42 (HB310~390); Steel caps shall be sample hardness tested at approximately ten percent(10%) random selection;
b. Microstructure: Predominantly pearlite;
c. Chemical Composition: Every furnace heat shall be analysed by Spectrometer; A conforming sample shall be obtained from each furnace heat prior to pouring the mould(s);
d. Dimensional Checking & Gauging: 100% check; be compliance to drawing dimensions within specified tolerances;
1. By visual inspection, e.g. where a cross joint or other dimensional or shape defect is evident, dimensions shall be verified to drawing;
2. By gauges manufactured to check specific features or dimensions of individual casting;
e. Casting Soundness: Level 2 of AS2574 or equivalent standard, 10% of order selected at random to be free of shrinkage with UT; Assessment of casting soundness and internal integrity shall be by ultrasonic testing; Sectioning by cutting may be only be used as a macro view test, as the cutting process may remove the area of unsoundness;
f. Surface Finish: Visual inspection after shot blasting; To achieve an acceptable level of surface texture, freedom from defects and extraneous material or rust that have the potential to reduce wear-life or the effective bonding of a rubber product;
1. All wear surface to be free from surface defects that may affect fitness for purpose, and any from of grease or oil;
2. All wear surface to be free from any raised features or markings above the wear face;
3. All bonding surface to be free of defects that affect fitness for purpose and to be free of rust, scale and any form of grease or oil.
g. Reporting: Providing process, inspection & test result data by which
specification compliance can be traced.
1. To provide process, inspection and test result data by which specification compliance can be traced;
2. To provide a means by which steel cap performance, may be correlated to manufacturing data with respect to chemical composition, heat treatment, and hardness.
h. Pearlitic Cr-Mo alloy steel casting liners for mine mills.
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 |
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