Hot rolled grinding balls for ball mill is a new forging and rolling production method. The production process has the advantages of high production efficiency, full automation control, stable and controllable quality of steel ball, small quality difference of steel ball in different batches, energy saving and consumption reduction, energy saving production in electric furnace, etc. The product has the advantages of smooth appearance, excellent roundness, high hardness, impact resistance, abrasion resistance, non-crushing and low loss of circle. It has become the mainstream production method of ball mill forging ball.
The process flow chart is as follows.
二、Productivity Table for Forged and Rolled Steel Balls and Sections
| Production Line No | Model | Lines | Annual capacity (ton) | Note |
| MQ-A1 | φ20-40mm | 2 | 30000 | Equipment capacity is annual production capacity, actual production according to the order quantity. If is the insufficient capacity, new production lines can be installed within 60 days to expand capacity. |
| MQ-A2- | φ50-80mm | 4 | 40000 | |
| MQ-A3- | φ90-110mm | 3 | 50000 | |
| MQ-A4- | φ120-150mm | 3 | 50000 | |
| MD-A5 | φ20*25---φ50*60 section | 1 | 8000 |
三、Rainbow Forged Steel Ball Material No and Chemical Composition Table
| Material No | Ball Model（mm） | Chemical composition | Mechanical properties | |||||||
| C | MN | CR | S | P | SI | Surface hardness（HRC） | impact toughness | Crusher rate | ||
| LB-1 | φ20-150 | 0.6-0.8 | 0.8-1.2 | ≤0.25 | ≤0.035 | ≤0.035 | 0.17-0.37 | 58-65 | ＞12 j/cm² | ＜0.5% |
| LB -2 | φ30-100 | 0.7-0.9 | 0.7-0.8 | 0.3-0.9 | ≤0.025 | ≤0.013 | 0.17-0.37 | 55-65 | ＞12 j/cm² | ＜0.8% |
| LB -3 | φ90-140 | 0.6-0.8 | 0.6-0.8 | 0.7-0.9 | ≤0.03 | ≤0.03 | 1.6-1.9 | 58-65 | ＞12 j/cm² | ＜0.8% |
| LB -4 | φ60-150 | 0.9-1.2 | 0.2-0.4 | 1.2-1.8 | ≤0.025 | ≤0.027 | 0.15-0.35 | 55-60 | ＞10 j/cm² | ＜1% |
| LB -5 | φ20-150 | 0.4-0.6 | 0.5-0.8 | 0.9-1.2 | ≤0.035 | ≤0.035 | 0.17-0.37 | 55-65 | ＞12 j/cm² | ＜0.5% |
| LB 6 | φ80-150 | 0.7-0.9 | 0.8-1.2 | 0.7-1.2 | ≤0.03 | ≤0.03 | 0.1-0.4 | 58-65 | ＞10 j/cm² | ＜1% |
| LB -7 | φ80-150 | 0.9-1.1 | 0.9-1.2 | 0.4-0.8 | ≤0.03 | ≤0.03 | 0.2-0.3 | 58-65 | ＞10 j/cm² | ＜1% |
| LB 18 | φ30-125 | 0.7-0.9 | 0.7-1.2 | ≤0.25 | ≤0.035 | ≤0.035 | 0.17-0.37 | 55-65 | ＞10 j/cm² | ＜1% |
| LB 20 | φ50-130 | 0.8-1.1 | 0.7-0.9 | ≤0.25 | ≤0.035 | ≤0.035 | 0.17-0.37 | 55-65 | ＞10 j/cm² | ＜1% |
| Note | Support OEM or customize special ingredient steel balls according to customer requirements. The hardness of small straight D steel ball is higher than that of large diameter steel ball. If the hardness range is required, it can be adjusted by heat treatment process. | |||||||||
四、Forged Steel Ball Physical Parameters
|
NOMINAL DLAMETER (mm) (ins) |
THEORETICALDA METER (mm) |
APPROX.MASS PER BALL (g) |
AVERAGE NUMBER OF BALLS PER MT |
|
| 20 | 3/4 | 20.8 | 37 | 27000 |
| 25 | 1 | 26 | 72 | 13900 |
| 30 | 1¼ | 31.2 | 125 | 8000 |
| 40 | 1½ | 41.6 | 396 | 3380 |
| 50 | 2 | 52 | 578 | 1730 |
| 60 | 2½ | 62.4 | 999 | 1000 |
| 70 | 2¾ | 67.6 | 1270 | 790 |
| 75 | 3 | 78 | 1951 | 510 |
| 90 | 3½ | 88.4 | 2839 | 350 |
| 95 | 3¾ | 93.6 | 3371 | 290 |
| 100 | 4 | 98.8 | 3964 | 250 |
| 115 | 4½ | 114.4 | 6154 | 162 |
| 120 | 4¾ | 119.6 | 7032 | 142 |
| 125 | 5 | 124.8 | 7989 | 125 |
| 135 | 5¼ | 135.2 | 10158 | 98 |
| 140 | 5½ | 140.4 | 11375 | 88 |
五、Forged Steel Ball Packaging
Usually, four kinds of packing methods are used, ton bag, barrel, ton bag + wooden bracket, barrel + wooden bracket.
Raibow company has been manufacturing and exporting Forged Steel balls for many years. We have rich experience in production, inspection, transportation and export. We are willing to base our long-term cooperation on high-quality products, timely shipment and delivery, competitive prices and satisfactory services. Our goal is to be a professional supplier of high-quality wear-resistant consumables for mines in China.
