grinding media factory

grinding media factory: 1Hardness:58-67HRC 2Izod impact strength:12-35J/M2 3Breakage:real 0.1% 4Density: 7.8g/cm3

Cr4%-9% ore mining steel ball 

Dia.:20mm-200mm

Surface hardness: more than 60HRC, Core hardness: more than 55HRC.

Breakage: Less than 1%

Impact toughness: More than 12J/cm2

Density: 7.8-7.85g/cm3

Impact to broken (times): 10000-20000

Abrasion:

non-ferrous metal: 0.4KG-0.7KG, ferrous metal: 055KG-0.8KG.( The abrasion just for reference, the exact abrasion depends on the specific mine ore, the temperature, the ball mill and other conditions.)

 

2. Package: Woven bag: 1Ton/bag;   Iron drum: 800KG/drum

3. Certificates we obtaion:

  

 4.specification

Nominal Diameter	Theoretical diameter	Theoretical Weight	Surface hardness	Centre hardness
(mm)	(mm)	(kg/per piece)	(HRC)	(HRC)
20	20.8	0.037	62-65	62-65
25	28.0	0.072
30	31.2	0.125
35	36.4	0.198	62-65	61-64
40	41.6	0.296
45	46.8	0.421
50	52.0	0.578
55	57.2	0.769
60	62.4	0.999
65	67.6	1.270	60-63	59-62
70	72.8	1.586
75	78.0	1.951
80	83.2	2.367
85	87	2.5243	59-64	59-64
90	92	2.9964
95	97	3.5241
100	102	4.1103
105	107	4.7582
110	112	5.4710
115	118	6.2512	58-63	58-63
120	122	7.1026
125	127	8.0279
130	133	9.0303	58-63	57-63
135	138	10.1076
140	143	11.2728
145	148	12.5243
150	153	13.8651

5.Quality specification:

Name	forged steel ball		forged steel ball		forged steel ball
Material	Special forged steel bar		High carbon forged steel bar		Medium carbon forged steel bar
Izod impact strength (J/cm2)	≥12		≥8		≥2
Hardness (HRC)	≥58 Surface60-67		≥44 Surface60-65		≥40 Surface 52-54
Impact to broken (times)	<Φ60	≥20000	<Φ60	≥18000	<Φ60	≥13000
	≥Φ60	≥10000	≥Φ60	≥13000	≥Φ60	≥10000

grinding media factory