Forged(hot rolling)steel ball:Our company mainly produces Φ20mm-Φ200mm forged steel ball.Huafu balls feature high accurate dimensions,rounded geometry shape,high hardness and good mechanical properties,wear-resistance,no deformation,no breakage.Huafu is equipped with advanced casting and forging producing facilities, a full inspection system, well educated professional persons and a management team. We import automatic hot rolling steel ball production line and semi-automatic hot rolling production line for the fast changing market. We also make our advanced heat processing lines. Our products are all produced of good-quality steel. They are cut by plasma cutting machines and heated by electric furnaces which increase the full hardness, impact the toughness and lower the break rate of steel balls.1.We mainly produce as follows kinds of forged(hot rolling)steel ballSeries      ElementC(%)Si(%)Mn(%)Cr(%)Cu(%)Mo(%)P(%)S(%)HF-A0.42-0.500.17-0.370.5-0.800-0.250-0.250-0.300-0.0350-0.035HF-B0.48-0.560.17-0.370.60-1.00-0.250-0.250-0.300-0.0350-0.035HF-C0.57-0.650.17-0.370.70-1.00-0.250-0.250-0.300-0.0350-0.035HF-D0.62-0.700.17-0.370.90-1.00-0.250-0.250-0.300-0.0350-0.035HF-E0.37-0.450.17-0.370.50-0.80.80-1.10-0.250-0.300-0.0350-0.035B-10.52-0.650.17-0.370.60-1.20-0.250-0.250-0.30 0-0.0350-0.035B-20.70-0.800.17-0.370.60-0.800.50-0.600-0.250-0.300-0.0350-0.035B-30.72-0.920.17-0.370.70-1.00.50-0.900-0.250-0.300-0.0350-0.0352. Technical specification of forged(hot rolling)steel ball      Diameter(mm)30405060708090100110120125150Diameter tolerance(mm)±2+3,-2+4,-3+5,-4Roundless(%)≤2≤3≤4≤5SeriesDiameterSurface hardnessBreakage rateImpact valueDrop timesMicrostructureHF-A20-150MM≥45 HRC≦1%≧12J/CM^2≧8000M+CHF-B20-150MM48-50 HRC≦1%≧12J/CM^2≧10000M+CHF-C20-150MM55-60 HRC≦1%≧15J/CM^2≧12000M+CHF-D20-150MM58-65 HRC≦1%≧15J/CM^2≧12000M+CHF-E20-150MM48-50HRC≦1%≧12J/CM^2≧8000M+CB-120-150MM48-50 HRC≦1%≧12J/CM^2≧10000M+CB-220-150MM58-65 HRC≦1%≧15J/CM^2≧12000M+CB-320-150MM60-65HRC≦1%≧15J/CM^2≧12000M+CTheoretical weight of forged(hot rolling)steel ballDiameterTheoretical weightDiameterTheoretical weight20mm32.8g90mm2988.9g25mm64.0625g100mm4100g30mm110.7g110mm5457.1g40mm262.4g120mm7084.8g50mm512.5g125mm8007.8125g60mm885.6g130mm9007.7g70mm1406.3g140mm11250.4g80mm2099.2g150mm13837.5g Chemical Composition C(%)Si(%)Mn(%)Cr(%)Cu(%)Mo(%)P(%)S(%)0.42-0.500.17-0.370.5-0.80.25max0.25max0.3max0.035max0.035maxSize 20-200mm(0.8inch-8inch) Hardness SeriousSurfaceVolume HardnessHardness35-38HRC32-35HRCImpact Value ≥12J/CM^2Strength of Extension ≥1000mpa/mm^2Length Tolerance +1m,-25mmDiameter Tolerance(mm) +0m,-1.5mm Production Process Raw material inspection--Blanking--Burr grinding--Furnace heating--Straightening-- Quenching--Tempering treatment--Inspection--PackageApplication Mines, Chemical industries, Quartz sand plant, Other rod millsPackage Steel wire