GRINDING BALLS
Grinding balls, also known as grinding media or milling balls, are spherical components used in industrial grinding equipment to reduce the size of materials into fine powders or smaller particles. They are crucial in various industries like mining, cement production, and chemical processing. These balls work by impacting and grinding materials within a mill, facilitating the efficient processing and extraction of desired components.
Forged steel grinding balls
Forged steel grinding balls refer to steel balls manufactured through either hammer/stamp forging or skew rolling techniques. MAKCO provides a diverse selection of forged steel grinding ball sizes, from 20 mm to 125 mm. We also accommodate custom sizes based on our clients’ needs.
For smaller diameter steel balls, up to 80 mm, we utilize the skew rolling method. For larger sizes, we employ hammer/stamp forging. After production, the steel balls undergo heat treatment to enhance their hardness. To modify their microstructure, we quench and temper the forged grinding balls under conditions tailored for each specific alloy.
Typically, we produce forged steel balls using medium-carbon alloys like 70Cr2 and 1060. As indicated by its name, 70Cr2 contains a small amount of chromium, which imparts excellent mechanical and physical properties to our steel balls. The surface hardness of our forged steel grinding balls ranges from 58 to 62 HRC, with volumetric hardness between 55 and 62 HRC .
MAKCO provides three primary grades of forged grinding balls, each categorized to suit different mineral processing applications, as detailed below:
MAKFORGE: our leading forged grinding balls which carry decades of experience and cutting-edge know-how in every step of production, from billets to balls, to maximize wear resistance and productivity.
MAKPLUS: It boasts a quality of conventional forged grinding balls that is widely accepted in the industry, thanks to its traditional production methods. However, it offers the same chemical composition and hardness properties as MAKCOPRO, making it an appealing option due to its favorable quality-price balance.
MAKPRO: Many of our clients choose MAKPRO, which is produced from 1060 alloys. While it can be an excellent alternative to several grinding balls currently in use, we recommend considering other types that contain small amounts of chromium. This minor chromium content can greatly enhance performance in your grinding processes.
Cast grinding balls
Although we produce round bars in a variety of sizes, our quenching and tempering furnace for grinding rods can heat treat sizes 80 and 100 mm with a maximum length of 5 m, based on its design. Additionally, according to market demands, we normally produce steel rods in 70Cr2 or 100Cr6 alloys, unless requested otherwise by the clients. As is the case with grinding balls, our heat treatment process for steel rods is also the famous quench temper
process. Nevertheless, there are details in the heat treatment process that require experience and proficiency to maximize wear resistance and milling efficiency. Alpha has a team of heat treatment experts and metallurgists o n boar d who adjust the parameters
according to raw material and end-users application.
Length tolerance and diameter tolerance are according to internationally approved standards. We supply grinding rods in standard packaging of 2-3 MT bundles in 20’ containers.
Depending on the application, MAKCO supplies cast balls of different chromium content to cement and mineral processing plants so as to meet the requirements of your plant(s) with proper hardness and wear resistance properties.
While we manufacture round bars in various sizes, our quenching and tempering furnace for grinding rods is designed to heat treat sizes of 80 mm and 100 mm, with a maximum length of 5 m. Additionally, in response to market demands, we typically produce steel rods using 70Cr2 or 100Cr6 alloys, unless otherwise specified by our clients.
Similar to our grinding balls, the heat treatment process for steel rods employs the well-known quench and temper method. However, specific details in the heat treatment process require expertise and skill to optimize wear resistance and milling efficiency. Alpha has a dedicated team of heat treatment specialists and metallurgists who adjust parameters based on the raw materials and the end-users applications.
Length and diameter tolerances adhere to internationally recognized standards. We supply grinding rods in standard packaging of 2-3 MT bundles within 20′ containers.
Depending on the application, MAKCO provides cast balls with varying chromium content to cement and mineral processing plants to ensure that your facilities meet the required hardness and wear resistance properties.
