One of the products produced by this company is grinding balls used in ball mills.
This product, which is produced by casting in this company, is available to customers in different sizes and chemical analyses, and various industries such as cement, steel, production of industrial concentrates, Heplex, industrial powders, etc. are consumers of this product.
An important feature of the cast iron balls produced by this company is high abrasion resistance, resistance to breakage and deformation, and maintaining a spherical shape in the grinding process.
Another important indicator of the balls produced by this company is their wear rate, which determines the speed of their consumption in the process, the control of which helps to reduce production costs and improve customer productivity. By using modern casting methods and heat treatment and increasing the mechanical hardness of the balls, the company is continuously trying to reduce the wear rate and make the production process economical for customers.
The company produces these parts in spherical shapes (in sizes 15, 17.5, 20, 25, 30, 35, 40, 50, 60, 70, 80, 90, 100 and 125 mm) and cylindrical shapes (in sizes 12×12, 16×16, 19×19, 22×22, 25×25 and 30×30 mm).
Milling balls are used in ball mills to produce micronized powder and have specific specifications, including:
These parts are mainly produced with the following standard analyses or with other analyses and requirements requested by the customer.
| Hardness (HRC) | Max S% | Max P% | Ni% | Cr% | Mn% | Si% | C% | Numbers |
| 58-66 | 0.08 | 0.05 | 0.5≥ | 10-12 | 0.3-0.7 | 0.4-1.0 | 2.9-3.5 | No.1 |
| 58-64 | 0.08 | 0.05 | 0.5≥ | 11-14 | 0.3-0.7 | 0.5-1.0 | 2.5-3.3 | No.2 |
| 58-62 | 0.08 | 0.05 | 0.5≥ | 15-17 | 0.3-0.7 | 0.5-1.1 | 1.8-2.6 | No.3 |
| 58-64 | 0.08 | 0.05 | 0.5≥ | 29-31 | 0.3-0.7 | 0.5-1.0 | 2.0-2.8 | No.4 |
| 56-60 | 0.1 | 0.05 | 0.5≥ | Max2.5 | 0.3-0.7 | 0.5-1.0 | 3.0-3.8 | No.5 |
All of these chemical compounds are used in dry and wet processes under different conditions.
One of the important characteristics of grinding balls is their dimensional and weight tolerances. These pieces are produced in two forms (spherical and silpeps) in different sizes.
| Number of units per ton | Weight tolerance (grams) | Weight (kg) | Size (mm) |
| 71428 | ±2 | 0.014 | 15 |
| 45454 | ±2 | 0.022 | 17.5 |
| 29412 | ±4 | 0.034 | 20 |
| 15385 | ±5 | 0.065 | 25 |
| 8403 | ±10 | 0.119 | 30 |
| 3636 | ±15 | 0.275 | 40 |
| 1869 | ±25 | 0.535 | 50 |
| 1118 | ±40 | 0.894 | 60 |
| 678 | ±50 | 1.474 | 70 |
| 479 | ±50 | 2.087 | 80 |
| 338 | ±100 | 2.962 | 90 |
| 229 | ±100 | 4.360 | 100 |
| 119 | ±150 | 8.400 | 125 |
Dimensional tolerance (mm) | Diameter (mm) | Size (mm) |
-0.5 +1 | 15 | 15 |
-0.5 +1 | 17.5 | 17.5 |
-0.5 +1 | 20 | 20 |
-0.5 +1 | 25 | 25 |
-0.5 +1 | 30 | 30 |
-1 +1.5 | 40 | 40 |
-1 +1.5 | 50 | 50 |
-1 +1.5 | 60 | 60 |
-1 +2 | 70 | 70 |
-1 +2 | 80 | 80 |
-1 +2 | 90 | 90 |
-1 +2 | 100 | 100 |
-1.5 +2.5 | 125 | 125 |
Silpeps are cylindrically shaped grinding balls that are usually of equal length and diameter.
Size, Weight and Weight Tolerance of Cylindrical Balls (Silpeps)
Number of units per ton | Weight tolerance (grams) | Weight (kg) | Size (mm) |
88496 | ±1.5 | 0.0113 | 12*12 |
38197 | ±2 | 0.0262 | 16*16 |
22925 | ±4 | 0.0436 | 19*19 |
14917 | ±4 | 0.0670 | 22*22 |
10341 | ±5 | 0.0967 | 25*25 |
6053 | ±10 | 0.165 | 30*30 |
Dimensional tolerance (mm) | Diameter (mm) | Size (mm) |
±1 | 12 | 12*12 |
±1 | 16 | 16*16 |
±1 | 19 | 19*19 |
±1.5 | 22 | 22*22 |
±1.5 | 25 | 25*25 |
±1.5 | 30 | 30*30 |
Sepahan Foolad Atashgah Casting Industries Company, with over 30 years of experience in the casting industry, is committed to self-sufficiency by leveraging skilled personnel and experienced managers. The company proudly serves various industries, including steel, copper, mining, cement, and their related sectors, as well as producing cast iron balls required by different industries.
Isfahan – Najafabad – Najafabad Industrial Park 2 – Sanat Square – Doctor Hesabi Blvd – Sub-corner 28
