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Weld Inspection in Cold-Rolling Plants with 2D/3D Profile Sensors

On cold rolling lines, steel strips are welded alternately by a welding machine in a fully automatic process in order to maintain processing around the clock. The quality and thickness of the weld seam must be continuously checked in order to avoid damage to subsequent processing units. For this purpose, a 2D/3D profile sensor is installed above and below the steel strip on a traversing unit, which traverses the weld seam and measures it with micrometer precision. In this way, faulty seams can be identified immediately and corrected if tolerance values are exceeded.

MLWL 2D/3D Profile Sensors

2D/3D profile sensors from the weCat3D series use the principle of laser triangulation to create 2D height profiles and 3D point clouds. The MLWL model offers unbeatable profile quality thanks to its optimized, high-quality optics.

Matching Products

The products listed here are ideal for use in this application.

MLSL121 2D/3D Profile Sensor

Light Source Laser (red) Laser Class (EN 60825-1) 2 Resolution Z 3.3 ... 5.2 µm Working range Z 72 ... 108 mm Measuring range X 27 ... 34 mm Resolution X 22 ... 28 µm

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MLSL122 2D/3D Profile Sensor

Light Source Laser (red) Laser Class (EN 60825-1) 2 Resolution Z 4.8 ... 9.6 µm Working range Z 65 ... 125 mm Measuring range X 40 ... 58 mm Resolution X 33 ... 47 µm

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MLWL121 2D/3D Profile Sensor

Light Source Laser (red) Laser Class (EN 60825-1) 2 Resolution Z 2 ... 4.9 µm Working range Z 70 ... 130 mm Measuring range X 30 ... 52 mm Resolution X 17 ... 26 µm

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MLWL221 2D/3D Profile Sensor

Light Source Laser (red) Laser Class (EN 60825-1) 2 Resolution Z 5.2 ... 26 µm Working range Z 120 ... 300 mm Measuring range X 65 ... 145 mm Resolution X 36 ... 81 µm

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MLWL131 2D/3D Profile Sensor

Light Source Laser (blue) Laser Class (EN 60825-1) 2 Resolution Z 2 ... 4.9 µm Working range Z 70 ... 130 mm Measuring range X 30 ... 52 mm Resolution X 17 ... 26 µm

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