Low Chromium Alloy
- Model：Low chromium alloy grinding ball
Weight：0.11~8.74kg
Surface hardness：≥45 HRC
Application range：It is widely used in powder preparation and superfine deep processing of industries, such as building materials, mine, chemical engineering, ceramic material, papermaking, magnetic materials.
Low Chromium Alloy Grinding Ball
Introduction
Low chromium alloy grinding ball is widely used in powder preparation and superfine deep processing of industries, such as building materials, mine, chemical engineering, ceramic material, paper-making, magnetic materials. Its surface hardness can up to more than 45HRC, hardness gradient is evenly distributed. It has good toughness and breaking resistance is 5 times than ordinary grinding ball. There is no deformation. It increases recovery rate of concentrate and production capacity of mill, prolongs the service life of liner plate of the mill, and reduces the cost of production.
Production Technology
Medium frequency furnace smelts high quality steel scrap, chromium alloy and other alloy materials first, after micro alloying processing is castmolding with steel model.
Constant temperature pouring ensures there is no sand inclusion, stoma, collapse and other quality defects.
Heat treatment oil quenching process, quenching and tempering will change internal structure of the ball, reduce the internal stress of sphere, ensure breaking
rate to further improve the performance after quenching.
Semi-finished product and finished product adopt advanced spectrum detection to ensure the stability of chemical composition and performance.
Chemical composition
|
Name |
chemical composition（%） |
|||||||
|
C |
Si |
Mn |
Cr |
Mo |
Cu |
P |
S |
|
|
Low chromium alloy grinding ball |
2.2-2.5 |
≤1.2 |
0.5-1 |
0.8-1.8 |
0.6-1 |
≤1 |
≤0.05 |
≤0.05 |
Mechanical properties and metallographic structure
|
Name |
Surface hardness （HRC） |
Impact value （J/cm2） |
metallographic structure |
Falling ball impact fatigue service life |
|
Low chromium alloy grinding ball |
≥45 |
≥2.5 |
P+C |
≥10000 |
|
P- pearlite C- carbide |
||||
Specification
|
specification（mm） |
unit weight（kg） |
quantity（pc/t） |
|
specification（mm） |
Unit weight（kg） |
quantity（pc/t） |
|
Φ30 |
0.11 |
9091 |
Φ90 |
2.90 |
345 |
|
|
Φ40 |
0.25 |
3891 |
Φ100 |
4.00 |
250 |
|
|
Φ50 |
0.50 |
2000 |
Φ110 |
5.30 |
188 |
|
|
Φ60 |
0.86 |
1153 |
Φ120 |
6.80 |
147 |
|
|
Φ70 |
1.37 |
729 |
Φ130 |
7.70 |
129 |
|
|
Φ80 |
2.05 |
487 |
Φ140 |
8.74 |
114 |
Contact us:
|
|
Serena Fu |
Kira Zhang |
Teresa Zheng |
|
|
serena.fu@hot-mining.com |
kira.zhang@hot-mining.com |
teresa.zheng@hot-mining.com |
|
Skype |
Serena20140924 |
kira.zhangjing |
teresa.zheng123 |
|
+86 151 0833 3341 |
+86 152 8105 1932 |
+86 152 8162 6323 |
