b2 d40mm surface hardness 58-61hrc smaller grain microstructure super grinding-resisting hot rolled steel ball
Quick detail:
Steel ball size: d40mm
Surface hardness: 58-61hrc
Core hardness: 56-59hrc
Good tougness, no broken
Description:
Raw meterial: round steel bar
Raw meterial type: b2
Steel ball size: 40mm
Surface hardness: 58-61hrc
Core hardness: 56-59hrc
Good tougness, no break
Useage: grinding media
Good surface roundress, no surface defects.
Falling impact: 20,000 times
Performance comparation:
- Hot rolled steel ball can save usage 40-50% than low chrome casting ball(chrome percent: 5%), improve outlet 15% at least than low chrome casting ball.
- Hot rolled steel ball can save usage 20-25% than medium chrome casting ball(chrome percent: 5% ~ 10%), improve outlet 15% than medium chrome casting ball.
- Hot rolled steel ball can save usage 10% than high chrome casting ball(chrome percent: 5% ~ 10%), improve outlet 15% than high chrome casting ball.
Applications:
- Mines
- Cement plants
- Power stations
- Chemical industry
Specifications:
Chemical percent of raw meterial b2:
|
C |
Si |
Mn |
P |
S |
Cr |
Co |
Ni |
|
0.75 |
0.23 |
0.74 |
0.016 |
0.001 |
0.48 |
0.02 |
0.01 |
Steel ball data:
|
Ball size (mm) |
Size tolerance (mm) |
Surfance hardness (hrc) |
Core hardness (hrc) |
Impact toughness (j/cm2) |
|
40 |
+1.5 -2.0 |
58~61 |
56~59 |
/ |
Steel ball production flow:
Microstructure picture:
Competitive advantage:
Top high cost performance;
Save annual steel ball use qty;
Increase outlet.
