SERVICE SPECIALIST FOR INDUSTRIAL COMPUTED TOMOGRAPHY

Needs-based pore analysis

In porosity analysis, we adapt to your needs. What does that mean?

For one thing, our sophisticated and automated CT scan process allows us to check small and large quantities of parts for the presence of significant flaws in a short time. Otherwise, you can also rely on high-resolution, excellently evaluated CT scans that conform to relevant industry and manufacturer standards when it comes to first articel inspection. In any case, you will receive a high level of process reliability and at the same time individual, needs-based evaluations.

Prüfen einer Bed plate am Inline CT
A Bed Plate is placed on the adapted component pick-up in the fast CT.

Extremely fast & affordable

Particularly in the development phase of a new component or when a new defect suddenly appears, you want to know quickly where you stand. This saves money and nerves. Components made of light metal or plastic with an enveloping cylinder of d= 500 mm and a cumulative material occupancy of approximately 200 mm can be digitized within a few seconds. This results in options for action almost as quickly. Favourable inspection costs are also derived from the high scanning speed (here to the price list). For a lot that is blocked due to pores in machining surfaces, for example, inspection is therefore also an economical alternative to scrapping.

Typical field of application

  • Uncovering focal points of error
  • Inspection of blocked lots due to a suspected deviation in a quality characteristic (pores, shrink holes).
  • Prophylactic avoidance of refinement of potential rejects, e.g. in the case of pores in machining surfaces
Dichtlippe als CAD-Qualitätszone
Sealing lip with colour-coded test zones, each allowing different pore sizes

In an automatic process, the test zone is unrolled and inspected for impermissible pores. 

Abrollung eines Prüfbereichs mit Pore
Unrolling of a inspection area with pore

Shortly after the CT is unloaded, it is already clear whether the inspected component belongs to the IO or NIO category. This means that the appropriate sorting can also be carried out in the same work step.

Procedure:

Ablauf Serienprüfung Porositätsanalyse

Handling dominates the machine occupancy time. For larger quantities, the processes can be further accelerated through automation.

Reliable & individual

Inspection according to the various standards of car manufacturers and associations requires a high-resolution scan data set. The execution is process-safe, standard-compliant and in a practical form of presentation. Reliable statements with clear indication of remaining uncertainties are a matter of course.

Typical field of application

  • First article inspection or requalification of components on the basis of relevant standards
  • Detailed analysis of focal points of error
  • shrinkage cavity and pore analyses on iron and steel castings

Typical field of application

  • Uncovering focal points of error
  • Inspection of blocked lots due to a suspected deviation in a quality characteristic (pores, shrink holes).
  • Prophylactic avoidance of refinement of potential rejects, e.g. in the case of pores in machining surfaces
Dichtlippe als CAD-Qualitätszone
Sealing lip with colour-coded test zones, each allowing different pore sizes

Comparison of images from the fast CT and laboratory CT:

Poren am schnellen Inline CT
Representation of a pore from a scan with fast CT

In a fast CT scan, microporosity/loosened microstructure are combined to form a pore.

Poren in hoher Auflösung
Same pore scanded with high spatial resolution

Eine hohe Auflö­sung ermöglicht detail­lierte  Aus­sage zur konkreten Aus­prä­gung der Lunk­er- bzw. Porengeometrie.

In an automatic process, the test zone is unrolled and inspected for impermissible pores. 

Analysis according to P202 or manufacturer's standard (ZFN 1136, VW 50093)

In addition to the support provided by industry-standard tools, Microvista also works with in-house resources to produce standard-compliant test reports. 

Abrollung eines Prüfbereichs mit Pore
Unrolling of a inspection area with pore

Shortly after the CT is unloaded, it is already clear whether the inspected component belongs to the IO or NIO category. This means that the appropriate sorting can also be carried out in the same work step.

Cross section through component whose porosity is to be evaluated according to VW50093
Standard-compliant selection of the test area, determination of areas and equivalence circles. 

Procedure:

Ablauf Serienprüfung Porositätsanalyse

Handling dominates the machine occupancy time. For larger quantities, the processes can be further accelerated through automation.

In the standard process, all orders are processed within 14 days at the latest.

If the parts do not have a serial number, they are registered with an internal number during part receipt. Both the scan data and the analyses and reports created in subsequent processing steps then refer to this number. This ensures 100% traceability of all work steps. Microvista's quality management system is certified according to ISO 9001/2015 as well as ISO 9100, which is important in the aerospace industry.

Ultimately, the analysis of pores and shrinkage cavities is rarely limited to their mere detection. It is always just as important to quantify their size. As with any other measurement method, the determination of the pore dimension is subject to error. The remaining uncertainty is dependent on a variety of factors, such as

  • the attenuation of the X-rays by the material of the component and its dimensions,
  • the spatial resolution of the captured and reconstructed image data and
  • the image errors (artefacts) that arise due to various physical effects. 

Reliable analysis results do not come about on their own, even with the best equipment. In addition to the expertise of the processing staff, established processes for uncertainty assessment are required. In every Microvista porosity analysis you will find reliable statements on the uncertainty assessment of the results presented.

Price overview for quick and practical inspection

A quick CT analysis is possible at Microvista at an excellent price/performance ratio. For quantities of more than 1,000 units, we will be happy to prepare an individual offer.

Length of component
Quantity 200 mm 600 mm 1000 mm 1400 mm 1800 mm
1 125 €/ part 150 €/ part 175 €/ part 200 €/ part 225 €/ part
up to 10 63 €/ part 75 €/ part 117 €/ part 143 €/ part 173 €/ part
up to 100 31 €/ part 38 €/ part 78 €/ part 102 €/ part 133 €/ part
up to 1000 16 €/ part 19 €/ part 52 €/ part 73 €/ part 102 €/ part

Analysis and evaluation:

  • manual 3D pore report per component € 130
  • for larger quantities (> 200), an automatic system can be created at short notice from our extensive module library, with which the einspection costs can be reduced to a fraction of the scanning costs! 

The above price table is based on the following component geometry:

  • max. enveloping circle: d= 500 mm
  • max. cumulative wall thickness: 200 mm
  • material: plastic or light metal, iron inserts possible
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