Specification
1.our main products
high chrome alloyed cast grinding ball
low chrome alloyed cast grinding ball
middle chrome alloyed cast gringding ball
high chrome alloyed cast gringding bar
2.Dimation:
cast grinding ball: 12mm ~130mm
3.Hardness
middle chrome: Surface HRC:≥48
4.Applied field
Cement plants,mines ,power station.chemical industry.
5.Chemical composition
Item
|
Chemical composition | ||||||||
C | Si | Mn | Cr | Mo | Cu | P | S | ||
Low chrome cast grinding ball | 2.0~3.5 | ≤1.2 | ≤1.5 | 0.8~2.0 | ≤1.0 | 0.2~0.5 | ≤0.15 | ≤0.15 | |
Middle chrome cast grinding ball | 2.0~3.3 | ≤1.2 | ≤1.8 | 2.0~3.5 | ≤1.5 | 0.2~1.0 | ≤0.15 | ≤0.15 | |
High chrome cast grinding ball | 2.0~3.3 | ≤1.0 | ≤2.5 | 10~18 | ≤1.0 | 0.2~1.5 | ≤0.10 | ≤0.10 | |
Special high chrome cast grinding ball | 2.0~3.3 | ≤1.0 | ≤2.5 | 22~25 | ≤2.0 | 0.2~1.5 | ≤0.10 | ≤0.10 |
6.Mechanical properties and microstructure examination
ITEM | Mechanical properties | microstructure | |
HRC | Time of falling balls | ||
Low chrome cast grinding ball | ≥45 | ≥8000 | P+C |
Middle chrome cast grinding ball | ≥48 | ≥12000 | P+C |
High chrome cast grinding ball | ≥55 | ≥15000 | M+C |
Special high chrome cast grinding ball | ≥60 | ≥22000 | M+C |
7,
process
Good material→chemical composition analysis of material→precise control of the melting and casting→Testing before casting in order to confire of elements→Casting in molds→The first product inspection→Polishing balls→Visual inspection→Automatic oil quenching→Tempering→Test chrome,C,HRC,and impact value→Stocking
If
We can also make the spring ,screw , CNC lathe parts ,stamping parts ect hardware ,our product have passed the ISO 9001:2008 and the Third party BV certificate ,we sincerely hope to cooperate with you .looking forward your inquiry .thank you so much .
Steel ball ,grinding media stell ball