Performance Grinding Balls For Mining / Professional Grinding Media
Balls
Process features of cast iron balls:
Moulding process---pouing when the molten iron temoerature reaches
1500 C,using the teoperature difference between moletn iron and the
molds.in this way,the ball can achieve internal organization of
grain refinement and be moredense.menanwhile,the carvide is
radially arranged .and such carbide is embedded in the matrix again
during grinding process,forming hatd layer continously,so that the
hardness and toughness is maintained to a reasonable range,greatly
improving the toughness and hardness of the grinding balls.
Specifications of our products as follows:
Type and Chenical Composition of Cast Balls
Name
|
Material
| Chemical Composition |
| C | Si | Mn | S/P | Cr | HRC |
| Cast ball | special hi-cr | 2.0-3.2 | ＜1.0 | 0.5-2.0 | ＜0.06 | ＞18 | 58-64 |
higt-cr
| 2.0-3.2 | ＜1.0 | 0.5-1.5 | ＜0.06 | ＞10 | 58-62 |
medium-cr
| 2.0-3.2 | ＜1.0 | 0.5-1.5 | ＜0.06 | ≥5 | 45-48 |
low-cr
| 2.2-3.4 | ≤1.2 | 0.5-1.5 | ≤0.06 | 1.0-1.5 | 42-46 |
Physical property of cast iron balls
Name
| Material | Impact test AK.j/cm^2 | Endurance test times | HRC | Breakage |
Cast ball
| special hi-cr | ≥4 | ≥10000 | 58-64 | ＜1% |
| higt-cr | ≥3 | ≥10000 | 58-62 | ＜1% |
| medium-cr | ≥3 | ≥8000 | 45-48 | ＜1% |
| low-cr | ≥2 | ≥8000 | 42-46 | ＜1% |
5.Package: Steel drums (850kg per drum) or Flexible Container Bags ( 1000kg
per bag)
.Electric furnace smelting:All cast steel balls are produced by
intermediate frequency electric furance .The purity and stability
of materials are effectively esured after unform temerature
conditioning and twice hot metal purificati0n.
.Assay before furnace :Temperature control is an important and
complex process during cast steel ball production.Different tapping
temperature and heat temperature are sensitively reflected in the
quality of the products.It is requested to master the proper
pouring temperature ,mold temperature ,so that can make sure the
products achieve a good state of body tisssue during the transition
from Liquid to solid states.
Process features of cast iron balls:
Moulding process---pouing when the molten iron temoerature reaches
1500 C,using the teoperature difference between moletn iron and the
molds.in this way,the ball can achieve internal organization of
grain refinement and be moredense.menanwhile,the carvide is
radially arranged .and such carbide is embedded in the matrix again
during grinding process,forming hatd layer continously,so that the
hardness and toughness is maintained to a reasonable range,greatly
improving the toughness and hardness of the grinding balls.
