HB Heavy Slag Removal Machine
A hammer station fractures heavy, hard slag that a belt alone cannot shift; the abrasive belt behind it strips the fragments and levels the surface — heavy slag removal for thick thermal-cut carbon steel in a single pass, without manual chipping and grinding.
- Hammer + belt configuration
- 800–1,600 mm working widths
- For thick plasma- and oxy-fuel-cut carbon steel
- Heavy slag removal in a single pass
Configuration: Hammer station + 1 abrasive belt
Working Width: 800 / 1,000 / 1,300 / 1,600 mm
Processing Thickness: 0.5–80 mm
Hold-Down: Magnetic table for carbon steel
Built for Heavy, Hard Slag — Fractured First, Then Finished
On thick plasma- and oxy-fuel-cut plate, slag resolidifies into thick, strongly bonded deposits. An abrasive belt alone grinds slowly against them, wears fast, and can smear slag across the surface instead of removing it.
The HB answers with impact first: rotating hammer discs fracture the slag at its bond with the part, and the belt behind the hammer station strips the loosened fragments away. If your deposits are light, everyday dross, the two belts of the BB are enough — and if the slag is at its heaviest and the finish matters too, the HBB adds a second belt behind the first.
What HB is made to remove
- Heavy slag from plasma cutting of thick plate
- Hard oxy-fuel (flame) slag and dross
- Strongly bonded deposits a belt alone cannot break
- Slag build-up around thick-cut edges and holes
- The manual chipping bottleneck on heavy parts
Inside the HB: Hammer First, Belt Second
The HB runs two stations in sequence. The hammer station does the breaking; the belt does the stripping and levelling. Impact first is what lets a single belt finish heavy slag in one pass.
Part flow runs from the entry-side hammer station to the exit-side abrasive belt.
Station 1 — Hammer Station
High-speed rotating hammer discs strike the surface and fracture heavy, strongly bonded slag and dross, breaking the deposits loose from the part.
Station 2 — Abrasive Belt
The belt strips the fractured slag, clears the remaining deposits and levels the surface, leaving the part ready for the next operation.
Magnetic hold-down: carbon-steel parts are held flat on the magnetic conveyor without clamps, so small parts can run safely at production feed speed.
Processing Capability
The HB is a through-feed heavy slag removal machine for thermal-cut carbon steel. In one pass it fractures heavy slag by hammer impact, strips the fragments with an abrasive belt, and leaves every part clean and consistent for the next process.
- Heavy slag fracturing — Rotating hammer discs break thick, strongly bonded slag at its bond with the part.
- Slag & dross removal — The abrasive belt strips fractured slag, dross and remaining deposits from the surface.
- Oxide skin removal — Removes the oxide layer left around thermal-cut profiles before further processing.
- Surface levelling — The belt levels the surface in the same pass, with no separate grinding step.
- Uniform one-pass result — Every part receives the same hammer-and-belt treatment, with no operator-dependent variation.
- Ready for the next process — A clean, consistent surface that forms a solid foundation for welding, coating and assembly.
Heavy Slag Gone in One Pass
No Manual Chipping Crew
The hammer station replaces the slowest manual step on heavy parts — chipping thick slag off by hand.
Fractured, Not Smeared
Impact breaks slag at its bond instead of grinding it across the surface, so the belt can strip it cleanly.
Repeatable From Part to Part
A fixed hammer-and-belt process gives a more consistent result than manual work that depends on the operator.
One Pass: Slag-Covered to Clean
Heavy plasma slag — fractured, stripped and cleaned in a single pass.
HB Is the Right Choice When…
- Your parts are carbon steel.
- The slag is heavy, thick and strongly bonded.
- Parts come from plasma or oxy-fuel cutting of thicker plate.
- A belt alone cannot break the deposit loose.
- You do not need a dedicated edge-rounding station.
Choose Another Configuration When…
- Standard dross and moderate slag: choose BB — two abrasive belts handle it directly, with no hammer station needed.
- The heaviest slag and a cleaner finish: choose HBB — hammer impact followed by two abrasive belts.
- Deburring plus controlled edge rounding: move to the BR / HBR / BBR / BRB configurations in Deburring & Edge Rounding.
BB vs. HB vs. HBB
| BB | HB | HBB | |
|---|---|---|---|
| Station sequence | Belt + Belt | Hammer + Belt | Hammer + Belt + Belt |
| Best for | Standard dross and moderate slag | Heavy, hard slag | The heaviest slag, with a cleaner finished surface |
| Choose it when | A belt can break and strip the deposit directly | The deposit must be fractured before belt finishing | Slag-breaking power and surface finish are both critical |
HB Technical Specifications
| Configuration | HB — hammer station + one abrasive belt station |
| Working Widths | 800 / 1,000 / 1,300 / 1,600 mm |
| Main Process | Heavy slag removal, dross removal and abrasive surface levelling |
| Typical Parts | Thick plasma-cut and oxy-fuel-cut carbon steel parts |
| Processing Thickness | 0.5–80 mm |
| Feeding Speed | 1–5 m/min |
| Sanding Belt Speed | 5–13 m/min |
| Hammer Rotation Speed | 9–24 r/s |
| Hold-Down | Magnetic conveyor table |
| Power Supply | 380 V AC, 50/60 Hz (customizable) |
| Air Pressure Required | 0.5–0.8 MPa |
| Service | CE Certified · Global Service |
All listed safety, servo-control, electrical and auto-compensation features are standard equipment.
HB Heavy Slag Removal Machine — Frequently Asked Questions
What does the Lasvio HB remove?
The HB removes heavy, hard slag and dross from thick thermal-cut carbon steel parts — especially the strongly bonded deposits left by plasma and oxy-fuel (flame) cutting on thicker plate.
How is the HB different from the BB?
The BB uses two abrasive belts and suits standard dross that a belt can break and strip directly. The HB replaces the first belt with a hammer station, which fractures heavy slag by impact before the abrasive belt strips the fragments and finishes the surface.
When should I choose HBB instead of HB?
Choose HBB when the slag is at its heaviest and the finished surface also matters in the same pass: HBB keeps the hammer station and follows it with two abrasive belts instead of one, so the second, finer belt leaves a cleaner finish.
Does the HB round edges?
No. The HB is a slag removal configuration with a hammer station and an abrasive belt, and does not include a dedicated rotary-brush edge-rounding station. For deburring with controlled edge rounding, see the BR, HBR, BBR and BRB configurations.
How do I confirm whether HB fits my parts?
Send the material, thickness, part size, cutting process and clear photos of the slag on both sides — or arrange a sample test on your actual parts. How strongly the slag is bonded is what decides whether a hammer station is needed.
Send Your Parts for an HB Test
Tell us what you cut, how thick the plate is, and what the slag looks like. We will confirm whether HB is the right configuration — or whether BB is enough, or your parts need HBB.
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