Automatic screw rolling steel balls production line is used to produce rolled steel balls from dia20mm to dia80mm for different composition. High productivity, fully automatic, qualified steel balls. No de-shape, no chamfer, smooth surface.
Main Components: Induction heating furnace, screw rolling machine, universal joints, coupling, gear box, reducer , roller box, converyor and cooling tower etc.
The proposal we designed will include:
1) Use advanced technology to produce steel ball,heat treatment & packaging.
2) Arrange the investigation of all designed paperwork
3) Manufacturing and supply on electric induction furnace, hot rolling device & heat treatment equipment.
4) Foundation designing & equipment installing
5) Commissioning the equipment
6) Training & equipment maintenance workers.
Manufacturing Process
First, prepare the round steel bar as the raw material. Please note that the composition should be provided to the manufacturer of the steel bar so that to get the right material.
Put the steel bars on the feeding device, after working; the bars go to the induction heating furnace to heat. And after reach to a specific temperature, go to the screw rolling working position start to screw. Formed steel balls go to the balls filter device to knock out the de-shaped balls; afterward, go to 1st quenching unit to quench, for some big size of the balls, need to 2nd quenching and then go to tempering furnace.
Above all is the standard process, but for different technical requirements, the producing process has some little change.
Working process for steel balls from dia20mm to dia80mm
Why Choose Screw Rolling for Grinding Steel Ball Production?
Screw rolling forms the heated round steel bar continuously between specially designed rolling dies.
Unlike conventional hammer forging, which relies more heavily on individual forming cycles and operator involvement, the screw rolling process is suitable for continuous mass production of small and medium-sized grinding steel balls.
Main advantages include:
● Continuous high-volume production
● Reduced dependence on manual forging
● Consistent ball diameter and roundness
● Smooth finished ball surface
● No obvious chamfer after forming
● Stable connection with online heat treatment
● Suitable for automated grinding media factories
● Repeatable production for standardized ball sizes
For customers planning long-term mass production of Φ20–80 mm grinding balls, a screw rolling line can provide a more integrated production method from steel bar to heat-treated finished ball.
Grinding Ball Sizes
The production line can be configured for grinding steel balls from approximately:
Φ20 mm to Φ80 mm
Common production sizes include:
● Φ20 mm
● Φ25 mm
● Φ30 mm
● Φ35 mm
● Φ40 mm
● Φ50 mm
● Φ60 mm
● Φ70 mm
● Φ80 mm
Different ball diameters require corresponding rolling dies, guide components and process settings.
If you plan to manufacture several grinding ball sizes, please send Hexin your required diameter range so that we can recommend the appropriate machine and tooling configuration.
What Determines the Quality of Hot Rolled Grinding Balls?
A good production line alone cannot guarantee high-quality grinding balls. Several process variables need to work together.
Steel Composition
The raw material determines the hardenability and basic mechanical properties of the finished ball.
Heating Temperature
Insufficient or excessive heating can affect forming quality and subsequent heat treatment.
Rolling Die Accuracy
The rolling dies directly influence ball diameter, roundness and forming consistency.
Rolling Stability
Stable machine speed and feeding are important for continuous dimensional consistency.
Quenching Process
Cooling rate and quenching conditions strongly affect final hardness.
Tempering Process
Proper tempering reduces internal stress and helps prevent excessive brittleness.
For this reason, Hexin recommends configuring the forming and heat treatment sections as one coordinated grinding ball manufacturing process rather than selecting each machine independently.
Complete Grinding Steel Ball Production Line Solution
Hexin can provide more than a standalone screw rolling machine.
For a new grinding media project, the complete solution can cover:
Raw Material Feeding → Induction Heating → Screw Rolling → Quenching → Tempering → Cooling → Inspection → Packaging
Our project support can include:
● Production process design
● Equipment configuration
● Production line layout
● Foundation drawings
● Equipment manufacturing and supply
● Installation guidance
● Commissioning
● Operator training
● Equipment maintenance training
● Technical support after startup
This is particularly useful for customers establishing a new grinding media plant who need to coordinate the forming and heat treatment equipment as one system.
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