Welding Inspection
/by adminaisUNDER CONSTRUCTION
Positive Material Identification
/by adminaisPositive Material Identification (PMI) is the analysis of a metallic alloy to establish composition by reading the quantities by percentage of its constituent elements.
This method is an NDE technique that can be used as a tool in Quality control. Material mix-up during construction can be catastrophic if left unchecked and the present trend is to increasingly use PMI to confirm that the right grade of material is used, as specified.
Vacuum Box Testing
/by adminaisThis method is a non-destructive examination used when trying to locate weld seam leaks.
Hardness Testing
/by adminaisPost Weld Heat Treatment
/by adminaisPost Weld Heat Treatment ( PWHT ) is defined as one of heat treatments done after welding/machining to :
Improve the Chemical mechanical properties of weldment / machined surfaces.
PWHT covers many different potential treatments.
In steel fabrication, most common procedure used is Stress Relieving.
Dye Penetrant Testing
/by adminaiscolor, fluorescent, wet & dry
Penetrant testing is used to reveal emerging surface defects such as cracks on the surface of all non-porous materials. Penetrant testing detects cracks, chips, porosity, pitting, etc. on parts at different stages of manufacturing, during preparation for welding and during welding. Penetrant testing detects metal fatigue (fatigue cracks, etc.), pitting, etc. on installations in service.
Apply
– Control of new part during production and equipment in service.
– Not suitable for parts that have been sanded or shot blasted.
Benefits
– Simplicity and low cost,
– Allows rapid checks in service
– Applicable to all non-porous materials
– Existence of products for application at temperatures ranging from -20 ° C to 180 ° C
– Good sensitivity for detecting through faults
Magnetic Particle Testing
/by adminaisColor, fluorescent, AC / permanent yokes
Magnetic testing (MT) is a nondestructive method widely used in the field of materials technology.
This method allows highlighting discontinuities or cracks open out or close to the surface. This technique works only on ferromagnetic material.
Magnetic particle inspection (magnetic examination) is used to make surface defects visible on magnetizable materials (iron, steel). In a new construction, the magnetic examination makes it possible to detect cracks, cracks, etc. during the various manufacturing phases, both in welding preparations and in welds. Magnetic examination can also be applied to detect fatigue cracks (as a result of metal fatigue) in installations in service
Apply
– Control only on ferromagnetic part
– Control of new part during production and equipment in service
– Suitable for parts that have been sanded or shot blasted
Benefits
– Simplicity and speed (faster than penetrant testing)
– Easy to detect through and underlying faults (approximately 2 mm). Defects can be matted or blocked
– Very good fault detection sensitivity
Ultrasonic Testing
/by adminaisThickness gauging & Flaw Detection
Ultrasonic inspection is a nondestructive method for detecting defects within a material. This method is based on the transmission and reflection of ultrasonic wave type within a material.
Ultrasonic testing is often used when looking for corrosion as well as when looking for indications of crack, inclusion / porosity, delamination, lack of fusion and others in molded, forged or welded parts.
An ultrasonic wave is emitted using a probe coupled to an ultrasound station which allows the reading of an echo on a time and amplitude scale (A-scan). The echo peak read on the A-scan by a qualified operator allows him to deduce that the ultrasonic wave, emitted and received by the probe, has been reflected by a wall or an indication and will be able to give a result.
Apply
– Welding inspection
– Thickness measurement
– Search for compactness defects on molded parts
– Search for duplication on sheets
Benefits
– High sensitivity for fault detection
– Location and dimensioning of faults
– Easily transportable material
Radiographic Testing
/by adminaisX-Ray & Gamma Ray Radiography
The Industrial radiography is similar to the medical radiography. It consists in crossing the piece to be inspected by a beam of X-rays (or gamma), and irradiating a film placed behind the piece.
X-ray and radiography control makes it possible to obtain an image of the material density of an object by X or gamma electromagnetic radiation.
The radiographic control by ionizing rays makes it possible to detect compactness (internal) defects which are often very fine (cracks, blows, inclusions, lack of bonding, lack of fusion, etc.). This control is carried out either using a radioactive source Y, or by an X-ray emitting station.
Apply
– Corrosion detection on piping
– Clogging or foreign body detection
– Quality control of welded joints
– Quality control of molded or forged parts
– Position control of an internal element
Benefits
– Ease of detection of internal parts faults
– Good fault detection sensitivity
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Fax: 013 340 7182
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Website: http://ais-ksa.com/