Steel ball ,grinding media stell ball

1)size:12-130mm 2)high hardness;good wear-resistant;steady performance;lower price 3)applied:mine;cement plant;power station

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

   low chrome alloyed cast grinding bar

   low chrome alloyed cast grinding 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

8,other informations

(1)package:iron drum(850-920kg per drum) or ton bag(1000kg per bag)

(2)applied:mine;cement plant;power station;chemical industry;etc

(3)production ability:36000ton per year

(4)delievery time:It mainlydepends on the quantity

Steel ball ,grinding media stell ball