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Laser welding

Process control software

Knowing what happens inside the weld

Laser welding is a closed process: you cannot tell from the outside of a part whether the seam is sound. That is exactly why process control belongs to it. LPKF offers two layers: TherMoPro inspects the result thermographically, and WeldOS with its WeldApps handles control, set-up and data recording.

Both are available on the stand-alone machines and on the systems for integration. Plastima helps with the choice and the configuration.

TherMoPro – thermographic weld seam control

Heat map of a weld seam captured with LPKF TherMoPro

TherMoPro takes a heat picture of every part directly after welding and turns it into a heat map. An LPKF algorithm compares that heat map against a reference standard and defined process limits. The result is 100 percent non-destructive inspection, without extra cycle time.

The system can be added after the welding process in existing installations: in a conveyor belt line, in a rotary table system or in a stand-alone machine. Irregularities show up immediately, so you can intervene when material or process conditions change, which reduces scrap.

Technical features:

100% non-destructive inspection of every weld seam
Detects housing contamination, process offsets and contour drift
Finds local and global overheating for long-term stability
Automated contour finding and statistical analysis
OK/NOK decision to type-specified criteria, with export of images and data

Specifications

Topic	LPKF TherMoPro
Measuring principle	heat picture directly after welding, converted into a heat map
Assessment	comparison with a reference standard and defined process limits
Integration	conveyor belt line, rotary table system or stand-alone machine
Communication	PLC connection for trigger and traceability
Output	export of images and process data for each part
Detects among others	interruption in the welding rib contour, contamination, process offset, deviating cover transmittance

Source: LPKF TherMoPro flyer (190225-EN).

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LPKF TherMoPro

WeldOS and WeldApps – control and data recording

A laser welding system is more than hardware. WeldOS is the welding operating system for the machine and all its relevant components: toolings, data interface communication and part handling. It covers all functions needed for proper and safe operation.

On top of that you choose individual WeldApps for what you need: contour management, process monitoring or data traceability. So you configure only what your process actually requires.

Technical features:

WeldApp ScannerControl: fast upload of welding contours and intuitive adjustment of path position and scan speed
WeldApp Monitoring: process visualisation, collapse distance over time, envelope curves and pyrometer signal for radial welding
WeldApp ContourManagement: automatic recipe selection based on the assembled welding tool
WeldApp Traceability: traceable storage of the welding result for each part
Expandable: LPKF adds new WeldApps regularly

Specifications

Component	Function
WeldOS	operating system for machine, toolings, interfaces and part handling
ScannerControl	upload and adjustment of welding contours
Monitoring	visualisation of the welding process, collapse distance and pyrometer signal with process boundaries
ContourManagement	automatic welding recipe selection per assembled tool; reduced set-up time
Traceability	storage and export of welding results per part

Source: LPKF Software Solutions flyer (SA-15-2142-290125-EN).

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LPKF WeldOS software

Laser welding

Knowing what happens inside the weld

TherMoPro – thermographic weld seam control

Specifications

WeldOS and WeldApps – control and data recording

Specifications

Contact details

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