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Downdraft table

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Description

Presentation

The MH-ASPIRATIONS aerospace extraction table is a self-contained workstation designed to capture dust and vapors generated during finishing operations on aerospace parts (fitting, deburring, sanding, trimming).
ATEX risk has been considered with evaluation performed by an external expertise body (INERIS).
Objectives: reduce explosion risk from fine dust, lower operator exposure and improve working conditions.

Main risks

Explosion of extraction equipment (including outdoor use) risking building, machinery and personnel.
Occupational disease from inhalation of fine, respirable dust.

Materials worked

Design

Simultaneous start of lighting and power supplies with extraction: operator cannot work if extraction is not running.
Translucent hinged side deflectors for occasional work on large parts.
Sheetmetal finished with oven-cured powder coating, scratch resistant.
Drawers to recover coarse particles and dropped small tools.

Worktop and recovery

Plastic grating worktop to avoid scratching parts (load 100 Kg/m²).
Drawers positioned under the worktop for collection of coarse particles and small tools.

Filtration and aspiration

Air velocity at the front opening > 0.7 m/s (clean filters) to capture alveolar dust.
Three-stage filtration located behind the worktop; final stages use absolute filters with enhanced sealing (e.g. E10).
Integrated, sound-insulated fan housed in the table casing.
Air discharged via an upper grille; possibility to connect to an external duct after technical validation.

Use

Operator can work seated or standing: cleared space under the drawers.
Integrated pneumatic and electrical connections for portable tools (possibility to connect and automatically cut off up to 2 pneumatic/electric tools depending on configuration).
Electrical cabinet with emergency stop and tool outlets.

Controls & accessories

Maintenance

Easy access to filters and quick removal for maintenance and replacement.
Automatic stop of the table if filters are abnormally clogged (ensures extraction is not below 0.5 m/s).

Safety

ATEX risk analysed and taken into account (external evaluation performed).
Worktop lighting and low noise level.
M1-class foam and a hatch for rapid fire extinguishing.
Extraction remains effective even if the grating is partially blocked, as suction is not performed only from below.

Key advantages

Enhanced safety for operations generating flammable/explosive dusts.
Ease of maintenance and access to filtration elements.
Integrated supplies and controls for tools ensuring ergonomics and operational safety.

Characteristics / technical specifications

Type: autonomous aerospace extraction table.
Air velocity at front opening: > 0.7 m/s (clean filters).
Safety threshold (automatic stop): protects against extraction < 0.5 m/s.
Filtration: 3 stages with absolute filters and enhanced sealing (e.g. E10).
Fan: integrated and sound-insulated in the casing.
Air discharge: upper grille, duct connection possible after validation.
Worktop: plastic grating, capacity 100 Kg/m².
Drawers: recovery of coarse particles and tools.
Filter monitoring: manometers.
Connections: integrated pneumatic and electrical for portable tools.
Electrical safety: cabinet with emergency stop and outlets for tools.
Finish: oven-cured powder coating on sheetmetal.
Materials workable: Aluminium, Magnesium, Titanium (under conditions), Inconel® (under conditions).
Fire protection: M1-class foam and rapid extinguishing hatch.