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Weld Seam Detection

Automotive parts today are made of welded tubes. Some examples are exhuast systems, seat frames, and engine cradles. In order to ensure repeatable geometries in the bended tubes, they have to be oriented by the position of the welded seam.

Weld seams must also be detected in coil processiong lines in order to prevent welded blanks from entering the press tooling. These detection and positioning tasks are the jobs of the ROLAND Weld Seam Detectors for tubes and coils.

Detection of weld seam in tubes for positioning purposes,e.g., in front of hydro forming processes.
Detection of weld seam in coils e.g., in blandking lines
Weld seam tracking during tube production for the positioning of ultra sonic probes

Detection of welds and positioning of tubes in bending machines and for hydroforming
Positioning of drums, containers etc.
Detection of weld seams and butt welds in coils
Detection of overlapped weld seams in coils
Quality assurance of products
Tool and machine protection

Control units for Weld Seam Detection
	SND30	SND50
Material & Thickness	Steel and non-magnetic stainless steel tubes Diameter: 10 - 250 mm Wall thickness: up to 3 mm	Steel and non-magnetic stainless steel tubes Diameter: 10 - 250 mm Wall thickness: above 3 mm depending on magnetic properties
Application	Positioning in tube benders and before hydroforming operations	Positioning in tube benders and before hydroforming operations
Measurement	one-sided contact	one-sided contact
Functional principle	Magnetic leaking flux Permanent magnet	Magnetic leaking flux Eddy current
Programs	30	Not limited
Special features	Teach-In calibration	PC platform under Windows NT^® Teach-In calibration

Simple control units for Weld Seam Detection
	SND8-NS9SC	SND8-NS11
Material & Thickness	One sided weld seam detection on ferromagnetic and austenitic materials in coils up to 3,0 mm	Detection of weld seams in containers and drums up to 1,0 mm
Application	For tool protection in front of cutting lines, presses, tube mills, and other metal forming machinery with automatic feed of material	Primarily in the metal packaging industry. Completely independent of lithographic decorations, e. g. Applications in machines for: screen printing, expansion of bodies, welding of ears, punching rivet holes
Measurement	one-sided contact	one-sided non-contact
Functional principle	Magnetic leaking flux	Magnetic leaking flux
Switching thresholds	1	1
Special features	Especially designed for butt welds in coils up to 3mm	Especially designed for weld seam and lock seam detection