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

Description

1as your drawing or request

 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

 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

Steel ball ,grinding media stell ball