Chrome Ball Forged Grinding Ball for Sag Mill

• Material: Iron
• Content: 100%
• Usage: Mine, Cement Plant, Power Station
• Processing Type: Forging and Casting
• Size: 20-150mm
• Color: Metallochrome
• Model NO.: 45#, 60MN, B2, B3
• Customized: Customized
• Raw Material Heating: by Electric Furance
• Heat Treatment Method: Oil/Air Quenching
• Certification: ISO9001:2008
• Transport Package: Container Bag, Steel Drum
• Specification: 20-150mm
• Trademark: Jinan zhongwei
• Origin: Shandong Jinan
• HS Code: 73261100
• Production Capacity: 1000000

Product Description

1)High hardness; No breakage; Good wear resistance
2)HRC:50-65
3)Dia:20mm-150mm
4)Forged ball
a.The Material: The high quality Alloy Steel Material
b.Package: steel drum (800-900kg per drum) or flexible container bag (1000kg per bag) 
c.Characteristics: 
   no deformation 
   high hardness 
   good wear resistant 
   no breakage 
FORGED STEEL BALL CHEMICAL ELEMENTS AND HARDNESS
 

Material	Chemical elements
	C	Si	Mn	P/S	Cr
B2	0.72-0.85	0.17-0.37	0.7-1.0	<0.04	0.4-0.6
60Mn	0.55-0.65	0.17-0.37	0.7-1.0	<0.04	<0.25
45#	0.42-0.50	0.17-0.37	0.5-0.8	<0.035	≤0.25
B3	0.58-0.66	1.6-1.9	0.65-0.8	<0.025	0.7-0.9

 
                                  Hardness
 

Material	25mm-50mm HRC		60mm-90mm HRC		100mm-125mm HRC
	Surface	Core	Surface	Core	Surface	Core
B2	60-65	58-62	58-63	50-55	56-60	40-45
60Mn	58-63	55-60	58-63	40-45	56-60	30-35
45#	55-58	45-55	55-58	30-35	50-55	25-30
B3					58-62	56-60

 
Weight and Microstructure of Forged Balls

(mm) Nominal diameter	(mm) Diametrical Tolerance	(kg) Approx weight     per ball	Average number per MT	Microstructure
25	+1.5,-0.5	0.064	15625	M+B+C (M-Martensite; B-Bainitic;C-Carbide)
30	+1.5,-0.5	0.11	9090
40	+2.0,-1.0	0.26	3846
50	+2.0,-1.0	0.51	1961
60	+3.0,-2.0	0.89	1124
70	+3.0,-2.0	1.4	714
80	+3.0,-2.0	2.1	476
90	+3.0,-2.0	3	333
100	+4.0,-3.0	4.1	244
110	+4.0,-3.0	5.47	283
120	+4.0,-3.0	7.1	141
130	+4.0,-3.0	9.02	111