90MM Good mineral forged steel grinding ball

1. Even high hardness 2. Good wear-resistance 3. Unbreakable 4. High impact value 5. Timely delivery Low price

Good mineral forged steel grinding ball 1.Feature: 1) In general, forged steel ball has high hardness: surface hardness to 55-68 HRC, volume hardness of 50-63 HRC  2) impact toughness high: impact toughness more than 12 J / cm2.  3) broken rate is low: the actual broken rate is not higher than 1%.  4) loss of grinding forged steel ball round rate is low.  2.Type and Chemical Composition
Brand	Grade	C	Mn	Si	Cr	S	P
Dp-1	50Mn	0.48-0.56	0.70-1.0	0.17-0.37	0.25max	0.035max	0.035max
Dp-2	60Mn	0.57-0.65	0.70-1.0	0.17-0.37	0.25max	0.035max	0.035max
Dp-3	65Mn	0.6-0.7	0.9-1.2	0.17-0.37	0.25max	0.035max	0.035max
Dp-4	75MnCr	0.70-0.85	0.7-0.8	0.17-0.37	0.2-0.7	0.03max	0.03max
Dp-5	Rail IronⅠ	0.5-0.65	0.60-1.0	0.15-0.37	0.25max	0.04max	0.04max
Dp-6	Rail IronⅡ	0.60-0.8	0.90-1.2	0.20-0.40	0.20-0.8	0.07max	0.03max

3.Weight and Microstructure of Forged Balls
Nominal Diameter(mm)	Diametrical Tolerance (mm)	Approx. Weight per ball (g)	Average Number per MT	Microst ructure
25	1.5/-0.5	64	15625	BATTEN M+LITTLE B+LITTLE C(M-Martensite,B-Bainitic,C-Carbide)
30	1.5/-0.5	110	9090
40	2.0/-1.0	260	3846
50	2.0/-1.0	510	1961
60	3.0/-1.0	890	1124
70	3.0/-1.0	1400	714
80	3.0/-1.5	2100	476
90	3.0/-1.5	3000	333
100	4.0/-1.5	4100	244
110	4.0/-1.5	5470	283
120	4.0/-1.5	7100	141
130	4.0/-1.5	9020	111

3..Applied Field

(1). Mines

 (2). Cement Plants

 (3). Chemical Industries

(4). Power Stations 

5.Main Process of Forged Steel Ball

(1)Raw material.(2)Cutting.(3)Heating.(4)Forging.(5)Quenching.(6)Tempering.(7)Testing.(8)Qualified Products.(9)Packing

 

6.Main Process of Casting Grinding Ball

(1)Raw material.(2)Scientific Proportioning.(3)Electric Furnace Smelting.(4)Assay Before Furnace.(5)Mould Forming.(6)Polishing.(7)Heat Treatment.(8)Qualified Products.(9)Packing

 

We are a professional manufacturer of grinding ball with high quality, competitive price, timely delivery and satisfactory service. Our company has passed ISO9001 quality system certification. The products are exported to Asia, Africa, Australia and other countries and regions. Our main products are Forged Steel Grinding Ball for size of Dia.20mm-150mm, as well as High Chrome Casting Ball and Low Chrome Casting Ball. The grinding balls made by us are of high hardness, even wearing, good wearing resistance, no breakage. They are widely used in the ball mill of mines, cement plants, power stations, chemical industries, and so on

 

90MM Good mineral forged steel grinding ball