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Control

non-destructive testing

  • 3D Control on site:

     

    Laser tracker API T3 - FARO articulated arm.

  • Penetrant liquids

     

    This type of examination involves applying a liquid penetrating the surface while keeping it under control. After the penetration time, the developer is applied. Thanks to the absorbent properties of the developer, open discontinuities at the surface are highlighted. The examination with penetrating liquids can be carried out in visible light and /or ultraviolet light using fluorescent penetrants.

  • Magnetic particles

     

    This method relies on the mechanical waves (ultrasound) generated by a piezoelectric element working at a frequency between 0.5 and 15 MHz. The control comprises the transmission, reflection and absorption of an ultrasonic wave which propagates in the part which is checked. The positioning of the discontinuity is done by the interpretation of the signals.

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  • Ultrasonic examination – The Pulse method

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  • Thickness measurement

    Thickness measurement represents an application of ultrasound. The method applies to any product made of steel, or any other homogeneous material, whose structure allows the propagation of longitudinal ultrasonic waves at a relatively constant speed, from which it is possible to obtain reflection of the ultrasonic beam on the opposite face of the translator.

  • The Radiation examination

    The method of penetrating radiation or radiographic consists in the interaction of the penetrating rays with the photosensitive films. It can be performed on X or gamma rays.

Destructive Tests

  • Technological Tests

     

    The testing laboratory performs a wide range of high standard tests and analyses in order to: • Identify the deficiencies of the metal materials. • Approve the welding processes. • Examine the welding samples for the approval of the welders. The testing laboratory has its own mechanical workshop for sampling and processing of specimens according to the standards required by customers and legislation.

  • Flexion by shock

     

    The flexion by shock testing is carried out both at room temperature and at low temperatures. Liquid nitrogen and absolute ethyl alcohol are used to adjust the temperatures a low as -190 degrees C (the temperature of the liquid nitrogen). The temperatures are checked by digital thermometers with immersion probes.

  • Hardness tests

     

    These tests are performed in laboratories and in the field using portable equipment: Vickers hardness test (HV), Rockwell hardness test (HRC, HRB).

  • Macroscopic and microscopic analysis

    The macrostructure shows the structure of the metallic materials that can be visualised and studied by eye or with the help of magnifiers using a magnification up to 30 times. The microstructure shows the internal structure of the metallic materials. The microstructural analysis is carried out both in the classical way, in the laboratory, and in the field, using the metallographic replicas method.

  • Metallographic replications

    The preparation of metallographic samples in the laboratory and in the field is carried out on abrasive paper of various granulations and diamond paste. This is done using the digital camera, a microscope, directly from the celluloid film used for taking the microstructural image.

  • Mechanical tests HDPE

    The testing laboratory performs tests and analyses for high density polyethylene (HDPE) with the aim of: approving the welding procedures; carrying out examinations of weld samples for the approval of welders. The material testing laboratory has its own mechanical workshop for the collection and processing of test specimens, according to standards required by customers and legislation.

ADVANCED METHODS

  • Automatic examination using the Phase Darray system

    The PA test uses a single probe containing several elements (16-128) in order to send angular ultrasound beams through the object that is being tested. Each element can be pulsed individually, in order to send phase-delayed waves. This leads to the production of a few beam angles, which when combined, form a network. This beam network identifies changes in hardware, such as cracks or inclusions, that can be viewed on the screen and identified.

  • Automatic examination using ultrasounds TOFD

    The time-of-flight diffraction is one of the most advanced ultrasound examination techniques. This method is based on the phenomenon of diffraction of ultrasonic waves creating virtual images of the discontinuities located in the landmarks under investigation. This method has a degree of precision higher than any other methods of ultrasound examination and it’s considered one of the fastest NDT methods since welding can be examined in a single scan.

  • Cartography of corrosion

    The PA – Corrosion Mapping technology was developed to check and measure corrosion zones in various industrial sub-assemblies. This method consists in the scanning of large surfaces, the result being a mapping of the entire surface with indications about the thickness/corrosion of the metal in various colours.

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