Grinding mill ball (ISO9001:2000)

1)Size:8-130mm 2)58-67HRC and impact toughness 2.5-7.5j/cm2 3)Low breakage;low wear rate;high hardness 4)ISO9001:2000

 Grinding mill ball

1. Chemical Composition

Chemical Composition%

C

Si

Mn

Cr

Mo

Cu

Ni

P

S

Cr10

1.8-3.2

0.3-1.2

≤1.2

10-13

0.1

0.1

a little

a little

a little

Cr>10

Varies according to the requirements

Cr0.3-2.0

1.8-3.5

≤1.4

≤1.2

0.3-2.0

a little

a little

a little

a little

a little

Cr2-7

2.0-3.2

≤1.2

0.5-1.5

2.0-7.0

a little

a little

a little

a little

a little

2. Mechanical  Properties

	Mechanical Properties
	Surface Hardness	AK(J/cm²)	Microstructure	Wear Rate	Breaking Rate	Times of falling ball
Cr≥10	56-68HRC	≥2.5	M+C	25gr/t.m	<1%	≥10000
Cr<10	45-57HRC	≥1.6	P+C	80gr/t.m	<1%	≥8000
C-Carbide    P-Pearite    M-Martensite

 3. Specification

specification	kg/pcs	pcs/ton
25mm	0.11	9091
30mm	0.257	3891
40mm	0.50	2000
50mm	0.867	1153
60mm	1.37	729
70mm	2.05	487
80mm	2.90	345
90mm	4.00	250
100mm	5.30	188
110mm	6.80	147
120mm	7.75	129
130mm	8.74	114

4,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

 5,other informations

(1)package:iron drum(850-920kg per drum)

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

(3)production ability:21600 ton per year

(4)delievery time:It mainly depends on the quantity

 6,photos

Grinding mill ball (ISO9001:2000)