Product Details

IPG Photonics Real-Time Weld Measurement LDD-700

SKU: Category: Microscopes

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Direct Weld Measurement

100% Quality Assurance

Real-Time Monitoring

Utilizing a low-power beam fired through the same optics as the welding laser, LDD measures every weld as it is made for highly accurate 100% quality assurance.

Direct, geometric measurement of weld penetration and 20+ other weld characteristics provides instant data comparable to destructive cross-sectioning without destroying the part.

LDD-700 Specifications

LDD-700
LDD-700
Real-Time Weld Measurement
Measurement Technology Inline Coherent Imaging
Weld Measurements 20+ Weld Metrics
Imaging Wavelength 800 to 900 nm
Power <20 mW
Measurement Frequency 250 kHz
Head Interface Compatibility Virtually All Fixed-Optic Camera Ports
Cooling Air-Cooled
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Additional information

When incoming material has consistent surface quality, cleanliness, and tight tolerances for fitting parts, laser welding is a highly stable and repeatable process capable of producing high quality results across millions of welds. If the part’s properties or position varies unexpectedly, however, the result may be a faulty weld. A single out of spec weld can be enough to compromise the function or appearance of an otherwise high-quality product.
Post-process testing and quality assurance methods are often time-consuming, destructive, or cannot offer complete data, forcing manufacturers to accept additional costs or risk shipping unacceptable products. LDD uses patented Inline Coherent Imaging (ICI) technology to offer direct weld measurement of every weld rather than relying on imprecise visual feedback. This all-in-one weld measurement tool integrates seamlessly with IPG lasers and beam delivery to offer a solution for the most demanding industrial quality assurance problems.

Weld Depth

Direct weld depth measurement ensures under- or over-penetration does not compromise joint strength or electrical performance.

Seam Position

Scanning ahead of the weld to confirm part alignment and weld path enables automatic seam realignment if necessary.

Transverse Profile

Measuring the weld seam’s bead width and shape detects overfill, underfill, or edge undercut that can indicate a weak finished joint.

Finished Surface

Analyzing the finished weld surface checks for defects that may indicate reduced structural integrity or increased electrical resistance.

Weld Verification — The IPG Difference

Unlike most weld monitoring techniques that simply monitor imperfect weld quality indicators like weld plume, LDD performs direct weld penetration measurements and 3D imaging to see exactly what the welding beam sees.

Compared to alternative technologies, LDD provides:

  • Full penetration weld depth measurement & quality assurance
  • Compatibility with single-mode laser welding
  • 3D imaging of keyhole and live 3D viewing for robot teaching
  • Keyhole alignment in any direction
  • Compatibility with high-speed on-the-fly welding
LDD directly measures weld penetration to accurately determine if the weld is acceptable based on customizable pass/fail conditions. Alternative
technologies like photodiode monitoring rely on indrect weld measurements like weld plume height that often lead to a high rate of false failures.
LDD records and communicates real-time data for every part before, during, and after each weld. In the event of process degradation or
weld failures, LDD alerts operators and systems to take corrective action. This intelligent process monitoring ensures that normal operations can
resume quickly and that only good parts move on in your manufacturing pipeline.

Seamless Integration with IPG Lasers & Beam Delivery

LDD integrates effortlessly with IPG fiber lasers, process heads, and welding systems. IPG OmniWELD software steers the measurement beam to measure key weld dimensions with no interruption to the welding process.

The optimal combination of measurement parameters and pass/fail criteria for each weld process is easily configured and replicated across systems.

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