Steel Grinding Media
Multiple Media Types: Forged, rolled and high chrome cast balls, plus cylpebs.
Custom Specifications: Various ball sizes, steel grades and chromium contents.
In-House Tooling: Rolls and guide plates manufactured in-house.
Product Introduction
Steel grinding media are used in ball mills to grind ore, cement raw materials and other materials. The choice of forged, rolled or cast media affects wear rates, mill operation and grinding costs. We supply forged and rolled carbon and low-alloy steel balls in sizes from 20 mm to 125 mm, high chrome cast balls with 11%–26% chromium, and cylpebs in sizes specified for each order. Our production also includes the rolls and guide plates used to manufacture rolled balls, allowing us to produce both Steel grinding media and the tooling used in the rolling process.
Technical Specifications
|
Parameter |
Rolled / Forged |
Cast High Chrome |
|
Diameter |
20–125 mm |
20–110 mm |
|
Hardness |
55–65 HRC, through-hardened |
58–63 HRC, through-section |
|
Carbon |
0.60–1.10% |
2.0–3.5% |
|
Chromium |
0.5–2.0% |
11–26% |
|
Manganese |
0.60–1.20% |
0.3–1.5% |
|
Silicon |
0.15–0.35% |
0.3–1.3% |
|
Sulphur / Phosphorus |
≤ 0.035% each |
≤ 0.10% each |
|
Density |
7.85 g/cm³ |
7.6 g/cm³ |
|
Standard Reference |
Customer specification or mill OEM drawing |
ASTM A532 / GB/T 17445 |
Materials
|
Medium |
Process |
Material |
Where It Earns Its Place |
|
Carbon steel ball |
Forged or rolled |
C 0.60–1.10%, Mn 0.60–1.20% |
General milling where first cost dominates and breakage is not the limiting factor |
|
Low-alloy steel ball |
Forged or rolled |
C 0.60–1.10% with Cr 0.5–2.0% |
Better hardenability, harder matrix, longer life in abrasive ore at moderate cost |
|
High chrome ball |
Cast |
High chromium white cast iron, 11–26% Cr |
Abrasive ore, corrosive pulp, dry cement and coal grinding |
|
Cylpeb |
Cast |
High chrome or low-alloy, 35 × 45 mm and 45 × 55 mm |
Fine and regrind duty where surface area per tonne matters more than impact |
Product Advantages
Longer wear life
Chromium carbides in a hardened martensitic matrix resist gouging abrasion; the ball wears by attrition instead of spalling, so the charge holds its size distribution longer.
01
Low breakage
Controlled casting and rolling, a recorded quench-and-temper cycle, and drop testing on production samples.
02
Uniform hardness
Surface and core hardness tested per batch, so the ball wears evenly from skin to centre.
03
Consistent size distribution
We machine the rolls and make the balls in the same plant, so the distribution we quote is the one our own tooling produces.
04
Full traceability
Every shipment carries a heat number linking chemistry, hardness and packing list.
05
Application Scenarios
|
Duty |
Mill Type |
Media We Recommend |
What Decides It |
|
Gold and copper ore, primary milling |
Overflow ball mill |
Rolled 60–100 mm, or high chrome 15% Cr and above |
Abrasiveness, ball breakage rate, pulp pH |
|
Iron ore, hard siliceous feed |
Grate discharge ball mill |
High chrome 15–17% Cr |
Wear rate against cost per tonne milled |
|
Cement raw and finish milling |
Two or four chamber tube mill |
High chrome 12% Cr, 17–60 mm |
Dry grinding, outlet temperature, chamber profile |
|
Coal pulverising |
Tube or ball mill |
High chrome 12–20% Cr |
Corrosive dry condition, fineness target |
|
Regrind and fine grinding |
Regrind or tower mill |
High chrome 20% Cr and above, 20–40 mm |
Surface area per tonne, low pH pulp |
FAQ
Q: Which Steel grinding media should I use in my mill?
A: Send the mill dimensions, ore type, current consumption in kg per tonne milled and target P80. Abrasive ore with corrosive pulp points to cast high chrome; impact-dominated duty with coarse feed points to a rolled ball.
Q: What is the difference between forged and cast media?
A: Forged and rolled balls are through-hardened steel, tough under impact. Cast high chrome balls carry chromium carbides and resist abrasion and corrosion better, but are more brittle. Neither is universally better; the duty decides.
Q: Can you match the grade we already run?
A: Yes. Send the current mill test certificate or the chemistry, and we quote to it.
Q: Do you supply samples?
A: Yes, sample drums can be sent for trial charging; the quantity and freight terms are agreed per case.
Hot Tags: steel grinding media, China steel grinding media manufacturers, suppliers, factory, ceramic grinding media 50mm diameter, forged steel balls 6 inch size, grinding balls 20mm diameter, grinding balls hrc 63 hardness, grinding cylpebs hrc 60 hardness, zirconia grinding beads 5 inch size
You Might Also Like
Send Inquiry
