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Macro-etching Examination & Photography

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EXPOSE CRACKS ON WELD BY ETCHING

Macro-etching is a technique used to test a weld by revealing the structure of the base material and weld. It’s a destructive testing procedure used to evaluate the characteristics of the weld. Showing the large-scale structure of a metallic specimen can expose grains for evaluation so the grains can be inspected for size and flow, penetration cracks, and overheating conditions.

Welding samples are prepared by cutting, grinding and etching the test sample. Etching the sample creates a chemical reaction that exposes the microstructure or flow lines of the material. For welds, etching a cross-section may reveal internal discontinuities, weld profile, the extent of penetration and the quality of the weld. The macrostructural properties of a weld can be used for the procedure or personnel qualification.

PTS provides a wide range of services pertaining to macro-etching for examination under low magnification. Macroscopic testing is typically performed on finished products such as weldments and piping to assess the overall conditions of the material.

  • Visual inspection
  • Macrostructure

Macro-etching is a technique used to test a weld by revealing the structure of the base material and weld. It’s a destructive testing procedure that is used to evaluate the characteristics of the weld.

By revealing the large-scale structure of a metallic specimen, it can expose grains for evaluation so the grains can be inspected for size and flow, penetration, cracks as well as overheat conditions.

For welds, etching a cross section may reveal internal discontinuities, weld profile, extent of penetration and the quality of weld. The macro structural properties of a weld can be used for procedure qualification or personnel qualification.

APPLICATION OF MACRO-ETCHING EXAMINATION & PHOTOGRAPHY:

Reveals component defects such as cracks, voids, porosity, and holes by cutting into metal surfaces

Low-magnification microscopes are used to examine the finer structure of the weld

Reveals component defects such as cracks, voids, porosity, and holes by cutting into metal surfaces

Low magnification microscopes used to examine the finer structure of the weld

Common Test Methods

ASTM E340

ASTM E381

ASTM A604

Talk to us today

Professional testing services have provided clients with superior weld testing services for decades. We run a dedicated weld testing lab, offering the best weld testing and qualification services possible.

Our expert testing team can help you with macro-etching examination & photography for your welding samples. If you need a macro etch weld test, call us or send us an enquiry today.

process timeline

Process #1
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Process #2
Lorem ipsum dolor sit amet, mea ei viderer probatus consequuntur, sonet vocibus lobortis has ad. Eos erant indoctum an, dictas invidunt est ex, et sea consulatu torquatos. Nostro aperiam petentium eu nam, mel debet urbanitas ad, idque complectitur eu quo. An sea autem dolore dolores.
Process #3
Lorem ipsum dolor sit amet, mea ei viderer probatus consequuntur, sonet vocibus lobortis has ad. Eos erant indoctum an, dictas invidunt est ex, et sea consulatu torquatos. Nostro aperiam petentium eu nam, mel debet urbanitas ad, idque complectitur eu quo. An sea autem dolore dolores.
Process #4
Lorem ipsum dolor sit amet, mea ei viderer probatus consequuntur, sonet vocibus lobortis has ad. Eos erant indoctum an, dictas invidunt est ex, et sea consulatu torquatos. Nostro aperiam petentium eu nam, mel debet urbanitas ad, idque complectitur eu quo. An sea autem dolore dolores.
Process #5
Lorem ipsum dolor sit amet, mea ei viderer probatus consequuntur, sonet vocibus lobortis has ad. Eos erant indoctum an, dictas invidunt est ex, et sea consulatu torquatos. Nostro aperiam petentium eu nam, mel debet urbanitas ad, idque complectitur eu quo. An sea autem dolore dolores.
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