Product Details

80mm casting steel ball/steel grinding ball

Product Description

Introduction

Specification of ADI Grinding Balls
Nominal Diameter	Diametrical Tolerance	Weight of Single Ball in Average	Hardness	Impact Toughness
(mm)	(mm)	(g)	(HRC)	(J/cm²)
φ20	+2 -1	32	60-64	7-10
φ25		64
φ30		110
φ40		263
φ50		513
φ60	+3 -2	888
φ70		1410
φ80		2104
φ90		2996
φ100		4110
φ110	+4 -2	5457
φ120		7102
φ130		9030
φ140	+4 -3	11278
φ150	+4 -3	13871

Chemical Composition(%)

C	Si	Mn	Cr	Ni	Cu	Mo	S	P
3.3-3.9	2.2-3.0	2.3-2.9	1.0	0.2-0.5	0.4-1.0	0.3-0.8	0.03-0.05	0.03-0.05

Key Indicators

ADI Grinding Ball	Density	Surface Hardness (HRC)	Impact Toughness	Metallographic Structure	Falling Ball Impact Fatigue Life
	7.3 T/m³	64	7-10 J/cm²	B+A+Carbide	≤Φ100	≥18000
					>Φ100	≥15000
Characteristics:	High hardness, good wear-resistance, light in weight, energy saving, neat appearance, external hard inside tough, not broken.

Material and physical properties for the grinding balls

1) Material:

The grinding ball is prepared by nodular irons containing alloying elements such as nickel, molybdenum, chromium, copper and so on.

2) Physical properties:

The grinding balls show higher hardness (surface hardness of HRC60. After using, the surface hardness of the balls is about HRC64.) and good impact toughness of 7~10 J/cm2.

Advantages of the grinding ball over the other balls presently used

Description	Properties			Metallographic Structure	Falling-Ball Impact Fatigue Life
	Superficial Hardness (HRC)	AK (J/Cm²)
ADI Grinding Ball	≥60		≥7	B+A+ Carbide	<Φ100	≥18000
					≥Φ100	≥15000
Low-Cr Ball	≥45		≥2.5	P + Carbide	>5000
Medium-Cr Ball	≥47		≥2.5	P + Carbide	<Φ80	≥13000
					≥Φ80	≥6000
High-Cr Ball	≥55		≥2.5	M + Carbide	<Φ80	≥15000
					≥Φ80	≥10000
Forged Ball	≥47		≥10	P + Carbide	----	----