POSITION:HOME / product / Forged (rolling) steel balls
Product Description: 1. Forged (rolled) steel ball has all the advantages of steel, through heat treatment to become a high quality ball mill ball 2. High production efficiency, large output, ball rolling production mechanization, high degree of automation, no manual operation of the production link, less employment, less human factors interference. 3. Stable quality, high hardness, good quenability, dense metallographic organization, fine grains, no deformation, steel ball from beginning to end will not deform, do not lose round, good wear resistance, impact toughness up to 12-35J / cm2, crushing rate is less than 1%; 4. Low energy consumption, no pollution, low labor intensity, low production cost 5. Well formed, small geometric tolerance, stable quality. 6. low wear rate, long service life, is the existing cast iron ball, forged iron ball 2~5 times, and the price is the same. 7. Model: diameter Ф 20mm- - Ф150mm. Steel ball hardness reaches 60 ~ 67 HRC, internal and external hardness balance, Hardness difference was <5 HRC. 8. Impact toughness is up to 12~35J / cm3. 9. Significant (7.8~7.85J/cm3)
Processing Technique
Main materials: 45 # steel, and 50 mn and 60 mn or 65 mn, the current wear resistance comparable to high chromium ball is 75 mncr material. Smooth surface: produced by forging (rolling) process, the surface without defects, no deformation, not losing the circle, to maintain the good effect of grinding. Close inside: it is forged from round steel, which avoids the defects caused by the process in the casting state, high internal density, high particle size, and enhance the drop resistance and impact toughness of the ball, thus reducing the breakage rate of the ball. Dry and wet grinding can be: due to the use of high quality alloy steel and new high efficiency anti-wear materials independently developed by our company, the reasonable ratio of alloy elements and add rare elements, control the content of chromium, so that its corrosion resistance is greatly improved, for the case of mine wet grinding, this steel ball is more suitable for its working conditions.
Diameter tolerance and roundness
Diameter | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 125 | 150 |
Diameter roundness（mm） | ±2 | +3，-2 | +4，-3 | +5，-4 | ||||||||
Roundness(%) | ≤2 | ≤3 | ≤4 | ≤5 | ||||||||
Chemical composition
Brand | C（%） | Si（%） | Mn（%） | Cr（%） | Cu（%） | Mo（%） | P（%） | S（%） | Ni(%) |
45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.80 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
60Mn | 0.57-0.65 | 0.17-0.37 | 0.70-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
65Mn | 0.62-0.70 | 0.17-0.37 | 0.90-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
70Mn | 0.67-0.75 | 0.17-0.37 | 0.90-1.20 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
40Cr | 0.37-0.45 | 0.17-0.37 | 0.50-0.8 | 0.80-1.1 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
70Cr2 | 0.65-0.75 | 0.20-0.30 | 0.75-0.90 | 0.55-0.70 | 0-0.25 | 0-0.30 | 0-0.030 | 0-0.030 | 0-0.30 |
B-2 | 0.70-0.80 | 0.17-0.37 | 0.70-0.80 | 0.50-0.60 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
B-3 | 0.58-0.66 | 1.2-1.6 | 0.65-0.80 | 0.70-0.90 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
Technical specification
Brand | Breakage rate | Hardness(HRC) | Impact value(J/cm²） | Drop times(times) | Micro structure |
45# | <1% | ≥45 | ≥12 | ≥8000 | M+C |
60Mn | <1% | ≥55 | ≥12 | ≥12000 | M+C |
65Mn | <1% | ≥58 | ≥12 | ≥12000 | M+C |
70Mn | <1% | ≥60 | ≥12 | ≥12000 | M+C |
40Cr | <1% | ≥55 | ≥12 | ≥12000 | M+C |
70Cr2 | <1% | ≥58 | ≥12 | ≥12000 | M+C |
B-2 | <1% | ≥58 | ≥12 | ≥15000 | M+C |
B-3 | <1% | ≥60 | ≥12 | ≥15000 | M+C |
TEL:+86-18766236970
E-mail:info@brjchina.com
Address: 150-27 Babao Industrial Park, Lulou Town, Pei County, Xuzhou, China
Forged(rolling)steel balls