Industrial Field

NON-DESTRUCTIVE CONTROL

The method of examining the strength of a structure or part without the need to dismantle or destroy it. Authorizations: ISCIR; SREN; ASME

Non-destructive control with Liquid Penetrants (LP)

Examination with penetrant liquids (PT) consists of applying to the surface under control a liquid with good penetration qualities in the surface discontinuities and highlighting them by contrast with the help of a developer. This examination highlights discontinuities open to the surface such as pores, fissures, overlaps, marginal notches, exfoliations, craters, indentations, etc. The examination can be done for all types of solid materials with appropriate roughness, metallic or non-metallic

Equipment: Block P1, Luxmeter, UV-meter, Thermometer

Thermal treatments

Thermal treatment is a technological process after which the material of a product acquires new properties. This process is carried out in three successive stages: Heating, Maintenance and Cooling. All these three stages are carried out gradually up to a certain temperature which is calculated according to the composition of the material of the product to be subjected to heat treatment.

Equipment: Transformer, Mains powered thermal treatment unit, Temperature programmers, Temperature recorders, Thermocouple welding device, Electric resistors, Various accessories (compensation cable; resistor power cables, etc.), Van set up for treatments thermal

Non-destructive inspection by visual examination

Visual examination (VT) consists in the visual verification of the product or the area to be controlled. Thus, the presence of surface discontinuities, technological errors, the condition of the surfaces and the product in general, etc. is monitored. Based on the clues provided by this examination, logical assumptions can be made about errors in the manufacturing technology, about the type and density of discontinuities inside. This examination is used before any technological operations and before all non-destructive examinations.

Equipment: Caliper, Roulette, Magnifier, Endoscope, Welding Subler

Non-destructive control with Ultrasound (US)

Ultrasonic examination (UT) is based on the laws of propagation, reflection and refraction of ultrasound when it encounters discontinuities in the material. Ultrasounds are emitted and received, by reflection from discontinuities, with transducers (palpators). The reflected signals are reproduced by an amplitude-distance (time) representation system. Most of the discontinuities inside the material can be highlighted. The examination applies to various metallic and non-metallic materials.

Equipment: US PHASOR XS device, Thickness measuring device – DM5 and USMGO, Standard block A1,A2,A3, Reference blocks

Non-destructive control with Magnetic Powders (PM)

Examination with magnetic powders consists in interpreting the magnetic field lines created by magnetizing the part or the area to be controlled. Highlighting the magnetic field is done with dry or suspended magnetic powders. This examination highlights open discontinuities on the surface and those closed but located in the immediate vicinity of the surface up to a usual depth of 3-4 mm. The examination applies to ferromagnetic materials with an appropriate roughness

Equipment: AC and DC magnetic yoke, Luxmeter, UV-meter, Sprays: Fluorescent and black powder, UV lamp, Berthold standard, Weight standard, Thermometer

Non-destructive control with X-ray Generator

It is a non-destructive examination method used for the volumetric detection of discontinuities in materials and welds. This uses penetrating radiation and also has, as a support for recording, radiographic films.

Equipment: X-ray generator: YXPO 225, Negatoscope, Developing machine, Densitometer

Non-destructive testing with gamma defectoscopy/gammography facilities

Examination with penetrating radiation (RT) is based on the physical phenomenon of attenuation of X-ray or GAMMA rays when they pass through the surrounding materials. These radiations, upon exiting the material to be controlled, impress a radiographic film in a different way in the areas with discontinuities compared to the rest of the material. This examination is complex from the point of view of labor protection. Most of the discontinuities inside the material can be highlighted. The examination usually applies to metallic materials.

Equipment: Gammadefectoscopy/gammography installations: GammaMat SE; GammaMat TSI-3/1; OSERIX RID Se4P, Negatoscope, Developing machine, Densitometer, Standard density scale

DESTRUCTIVE CONTROL

The method of examining the strength of a structure or part that requires its destruction. Permissions: ISCIR

Material hardness measurements

The method by which this type of testing is carried out, consists in printing a ball of the prescribed diameter, perpendicular to the surface of the piece to be tested. The ball used as a penetrator must have a hardness at least 70% higher than the hardness of the tested material. The tool used to carry out this process is called a durometer.

Chemical analysis

Chemical analysis is a technological process that identifies the chemical elements in the composition of a material and the amount in which they are present in the composition of the material. This technological process is carried out with the help of a mass or portable spectrometer.