Descaling &
Deburring
Removes oxide scale from hot-rolled steel and eliminates burrs and sharp edges from castings and machined parts — faster than acid pickling, with no waste streams and a coating-ready anchor profile included.
The Process
Target oxide scale
Hot-rolled steel plate, bar, and structural sections carry 100–300 µm of mill scale. Angular steel grit is directed at the surface, fracturing and dislodging the oxide layer in a single pass.
Blast and clean
High-velocity impact shatters scale, removes casting sand, breaks burrs at machined edges, and strips forging oxide simultaneously — all without acid, heat, or tooling changes.
Improves surface for coatings
The cleaned surface emerges at Sa 2.5 or better with a defined anchor profile, ready for primer, thermal spray, or further machining — with zero risk of hydrogen embrittlement.
Key benefits
Sa 2.5 in one pass
Angular grit fractures and strips even tenacious mill scale from hot-rolled steel in a single blast cycle, eliminating re-processing.
No acid waste
Dry mechanical process generates no effluent, no acid sludge, and no hydrogen embrittlement risk on high-strength steels above 1000 MPa.
Profile and clean together
Abrasive blasting simultaneously removes scale and creates an anchor profile — chemical pickling requires a second blast step before coating.
30–120 s per m²
Blast descaling is 10–30× faster than acid pickling for equivalent surface area, enabling high throughput on continuous plate or bar lines.
Uniform edge-breaking
All machined burrs, sharp edges, and drilled-hole radii are broken simultaneously and consistently without selective manual deburring.
Recyclable media
Steel abrasive recycles 300+ times. Running cost per tonne of steel treated is a fraction of expendable abrasives or acid-bath consumables.
Recommended abrasives
Steel Shot S-230
SAE J444 · S230 · 40–52 HRC
Spherical media for casting cleaning and precision deburring. Removes foundry sand and breaks edges without creating aggressive surface profiles that could raise dimensional concerns.
View specs →Steel Grit G40
SAE J444 · G40 · GP 40–51 HRC
Standard angular grit for structural steel descaling. Sharp particles fracture mill scale efficiently and produce a 40–75 µm anchor profile in the same pass.
View specs →Steel Grit G18 / G25
SAE J444 · G18 / G25 · GL 54–61 HRC
Coarse medium-hard grit for heavy forging scale and thick oxide layers. Higher hardness delivers greater impact energy to fracture tightly bonded scale on alloy and tool steels.
View specs →Get an application-specific recommendation
Our technical team will recommend the correct abrasive grade, blast pressure, and exposure time for your specific material and contamination type — with sample media available for process trials.