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Coating Inspection

The coating inspection comprises the coating thickness measuring that determines the thickness of the material coating as well as the adhesion test that determines how reliably this coating adheres to the ground.

Coating thickness measurement

The coat thickness measurement is conducted with the magnetic induction test method. Each coating layer thickness is measured at different points of the test object and thoroughly documented.

Adhesion Test

The adhesion measurement is conducted wiith a cross-cut-test. A comparison specimen of the coating is cut witha standardized experimental mold in form of parallel crosses (i.e. Cross-cut). The cuts are then analysed and evaluated.

Radiographic Test

The radiographic test is generally used for the detection of internal discontinuities in welding seams with a wall thickness up to 40 mm. The preparation and analysis of the test is solely conducted by certified personnel according to DIN EN 473 level 2.

Recording technique according to DIN EN 1435:

X-rays simple wall: class A+B up to t=20 mm
X-rays double wall: class A+B up to t=10 mm

Gamma rays iridium192 class A simple wall: t=20-100 mm
Gamma rays iridium192 class B double wall: t=10-45 mm

Evaluation according to group B for pressure vessels, C for medium strained components, D for simple steel structures.

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Dye Penetrant Test

The dye penentrant test uses the capillary forces of fine surface cracks and pores to make them visible with the help of special dye. The preparation and analysis of the test is solely conducted by certified personnel according to DIN EN 473 level 2.

Application area:

For all non-magnetizable materials and discontinuities that are open towards the surface.

Evaluation according to DIN EN ISO 3452-1

For all primary materials in dependence on DIN EN 1371-1 or DIN 1690 part 2 For welding seams according to DIN EN ISO 23277 (steel), according to DIN EN ISO 10042 (aluminium) or AD-MB HP 5/3

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Visual Inspection

The visual inspection is used for examining welding seams and the overall surface area of components of all wall thicknesses in order to detect visible surface discontinuities. All tests are solely conducted by certified personell according to DIN EN ISO 473 Level 2.

Welding seams according to DIN EN 970

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Ultrasonic Test

The ultrasonic test according to DIN EN 12668-1 is an accustic method to find material defects. Using ultrsound components can even be testes without dismantling. The preparation and analysis of the test is solely conducted by certified personnel according to DIN EN 473 level 2.

Application area (order number accord. To DIN EN ISO 6520-1):

Cracks:100
Wormholes/pores: 2011 and 2016
Inclusion: 300 and 3042
Lack of fusion: 401 and 402
Root concavity: 515 and 5013

The ultrosonic test is generally used for primary material t>6 mm, for rolled, forged and cast material as well as for welding seams t>10 mm.

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Positive Material Identification

The positive material identification (PMI) test ensures that only specified material is used. By means of a spectral analysis material differentiation, test for mixed-up components, PMI tests and alloy analyses for metallic materials can be conducted reliably and quickly.

Material Analysis for Alloy Classes:

[glyphicon name="ok-sign"] Tool Steel
[glyphicon name="ok-sign"] Copper Alloys
[glyphicon name="ok-sign"] Titanium Alloys
[glyphicon name="ok-sign"] Aluminium Alloys
[glyphicon name="ok-sign"] Nickel Alloys
[glyphicon name="ok-sign" ]Stainless Steel
[glyphicon name="ok-sign"] Cobalt Alloys
[glyphicon name="ok-sign"] Low Alloyed Steel

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Endoscopy

The technical endoscopy helps to identify and evaluate the technical condition of plant components and equipment. The most common inspection task is the identification of foreign objects, crack formation and the evaluation of damages from abrasion and corrosion on surfaces.

Application Industry

Machine construction
Refinery and pretrochemistry
Power plant technology
Chemical engineering

Application Area

Measurement instrumentation
Pipeline technology

Benefits

Reduction of unexpected downtimes and reclamation/exchange measures

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Hardness Test

The hardness test determines the indentation resistance of materials by pressing a standardized test piece under specified conditions into the workpiece. The resulting mark in the surface gives information about the hardness of the material. For testing we use the established test methods by Vickers, Rockwell and Brinell.
For the shop test we use an Equtip harndess testing machine according to DIN 51225, which has been inspected and approved by the Material Testing Institute (MPA) in Dortmund according to DIN EN ISO 6507-2 (Vickers) for the testrange HV5 – HV50 class 1 and has been calibrated for tests according to Rockewell and Brinell.

Vickers Method

all source materials according to DIN EN ISO 6507-1
all weld samples according to DIN 50163

Rockwell Method

all source materials according to DIN EN ISI 6508-1

Brinell Method

all source materials according to DIN EN ISO 6506-1

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Magnet Particle Test

Besides of the penetrant test the surface crack test can also be conducted using the magnetic particle test. Therfore, the workpiece is magnetized while applying iron oxide powder, which orient towards the crack. Arising stray fields on surface defects indicate pores and cracks. The preparation and analysis of the test is solely conducted by certified personnel accoring to DIN EN 473 level 2.

Application area:

Only for magnetizable materials and near-surface imperfections

Detectable discontinuities

Surface/crater crack: 100 and 104
Surface pores: 2011 - 2017
Near-surface lack of fusion: 401
Root concavity: 515 and 5013