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GuoYang Grinding Balls

Add:Heli Industrial Zone in Ningguo City, Anhui Province, China.

Tell: 0563-4309019

Fax: 0563-4309035

E-Mail:ky022@nggq.com




Details

Forged steel grinding ball

Time:2016-06-07 17:40:40 | Click:
Applications:
Forged steel grinding ball is widely used as wear resistant materials in ball mill and SAG mill in mining, cement factories, power plants, sewage treatment plants, chemical factory etc.
Production Process:
Round bar steel→automatic feeding→furnace heating→rotary cut into ball→Isothermal transfer→quenching→cooling→warming-packing
Product Features and Advantages:
Our forged ball is manufactured with high-quality raw materials, advanced automatic equipment, unique heat treatment process and strict quality control system. It has a better performance in overall hardness than the average.
Product features contain high overall hardness, hardness gradient distribution, large toughness, low wear and breakage rate, almost no out of round, strong chemical corrosion resistance.
Advantages:
High overall hardness: It surface hardness can reach 57-67HRC, volume hardness can reach 56-64HRC, and the hardness is evenly gradient distribution.
High impact toughness: toughness can be greater than 12J / CM2
Low Broken rate: Stripping resistant and crushing resistant is 10 times more than the normal. Ball falling impact times are more than 20,000, actual broken rate does not exceed 1%, almost close to no breaking.
Packaging:
Annual production capacity is 100,000 tons
Packing method: tons of bags, drums, drum with a tray
Quality control:

Our forged steel grinding ball is manufactured in accordance with national standard GB8649-88 and forging (rolling) ball black metallurgy industry standards (YB / T 091-2005), quality control and management system passed the ISO9001 certification.


Technical parameter:

Size(MM)
Φ25 Φ30 Φ40 Φ50 Φ60 Φ65 Φ70 Φ80 Φ90 Φ100 Φ110 Φ120 Φ130 Φ140 Φ150


Chemical composition

Item                                            Chemical composition

                       C               Si               Mn             S             P          Cr
50Mn             0.48-0.56   0.17-0.37   0.65-1.00   ≤0.035   ≤0.050   ≤0.15
60Mn             0.57-0.65   0.17-0.37   0.70-1.10   ≤0.035   ≤0.050   ≤0.25
65Mn             0.62-0.75   0.17-0.37   0.90-1.20   ≤0.035   ≤0.050   ≤0.25
B2                 0.75-0.85   0.17-0.35   0.70-0.90   ≤0.035   ≤0.050   0.40-0.60
B3                 0.50-0.65   1.35-1.85   0.40-1.0     ≤0.035   ≤0.050   0.80-1.20
BL                 0.55-0.75   0.15-0.35   0.65-0.85   ≤0.035   ≤0.050   0.70-1.20
BG                 0.90-1.05   0.15-0.35   0.35-0.95   ≤0.035   ≤0.050   1.0-1.7
B6                 0.95-1.05   0.2-0.3      0.92-1.03    ≤0.025   ≤0.025   0.46-0.53


Physical properties

Item           AK(J/cm2)      Times of falling ball                        Hardness(HRC)
                                                                              Φ25-50                   Φ60-90                  Φ100-150
                                                                    Surface      Core       Surface      Core        Surface      Core
50Mn             ≥12                ≥15000            ≥56            ≥40        ≥56            ≥36           ≥55         ≥32
60Mn             ≥12                ≥15000            ≥58            ≥45        ≥58            ≥38           ≥55         ≥35
65Mn             ≥12                ≥15000            ≥60            ≥52        ≥60            ≥42           ≥56         ≥36
B2                 ≥12                 ≥15000           ≥60            ≥60        ≥60            ≥54           ≥58         ≥50
B3                 ≥12                 ≥15000           ≥60            ≥60        ≥60            ≥54           ≥60         ≥55
BL                 ≥12                 ≥15000           ≥60            ≥60        ≥60            ≥54           ≥60         ≥55
BG                 ≥12                 ≥15000           ≥60            ≥60        ≥60            ≥60           ≥60         ≥58
B6                 ≥12                 ≥15000           ≥60            ≥60        ≥60            ≥60           ≥60         ≥58




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