Main Sector of relevance\IRC classification 8. Industrial Manufacturing, Material and Transport Technologies

8.92 Portable vortex-current flaw detector FD

Developers’ contact information

State Scientific Institution “The Institute of Applied Physics of the National Academy of Sciences of Belarus”
16 Akademicheskaya Street, Minsk BY-220072

Summary

Portable vortex-current flaw detector with overhead pencil-type converter, designed to detect surface defects in ferromagnetic items such as cracks.

Description

Scope of application
The device is designed to detect defects such as of cracks located on the surface of ferromagnetic (steel, cast iron) products. It allows you to detect defects at low levels of controlled surface purity, and under a coating (paint, plaster, etc.) with a thickness up to 1 mm, in the presence of various contaminants (grease, sawdust). Distinctive features include high sensitivity and reliability of defects detection, ease of use.
Operation
The operation of the unit is based on the vortex-current method: vortex electric currents are generated in the surface layer of the controlled items; existence of a defect is determined through the analysis of parameters of a secondary electromagnetic field that they have created.
Construction
The device consists of an electronic unit and a connected pencil-type converter. The control is carried out during the process of displacement of the converter on the control surface. The existence of a defect is determined by an external LED scale and is duplicated by the sound signal. Safe to work with, shock-resistant casing. Converters have a wear-resistant work surface.
Specifications
Minimum size of defects found with surface purity Rz of not more than 5:

• width – 0.01 mm
• depth – 0.1 mm
• length – 10 mm

Technology type

• Other:
  Device.

Technical advantages and economic benefits

High defects detection reliability, ease of use.

Technology differentiation and uniqueness

A new way of processing information has been implemented, which allows to significantly reduce the influence of various factors hindering the results of monitoring.

Context in which technology was identified

The device is implemented at Minsk Motor Plant, in the locomotive depot in Lida.

Technological keywords

Flaw detector, vortex-current control.

Development Stage

• Other:
  The devices are manufactured individually, or in lots according to the contract agreement; they are metrologically certified.

Intellectual property rights

• Other:
  Useful model patent.
• Specific Patent Information:
  No. 1939, Republic of Belarus, in effect since 14.10.2004.

Range of applications

Industrial enterprises.

Classifier Used at the EU Innovation Relay Centres

• Industrial Manufacturing, Material and Transport Technologies

Preferable Regions

• Europe
• Asia

Practical experience

The device operates in the industry.

Environmental impact

None.

Type of collaboration sought

• Other:
  Manufacturing contract.

Terms and restrictions

On a contractual basis.

Available technical assistance

• Documentation
• Other:
  Device
  Field supervision.