Call Us !
+91-8451849291
Micro/Macro Examination Test
Micro examination involves analyzing samples that have been prepared and polished to a smooth finish, often using a one-micron diamond paste. These samples are typically etched with a chemical solution before being examined under a metallurgical microscope. This technique is primarily used to assess the material's microstructure, including detecting metallurgical anomalies like third-phase precipitates or excessive grain growth. Standard procedures such as phase counting and grain size analysis are also conducted as part of the micro examination process.
Tests We Offer:
- At Om Metalab Services Pvt. Ltd., we utilize cutting-edge SpectroMAXx spectrometers, powered by Optical Emission Spectroscopy (OES) technology, to deliver rapid and precise chemical analysis of ferrous and non-ferrous metals and alloys.
- Micro Examination with Photographs
- Micro Examination for Welded Pipes
- Macro Examination for Forgings, Mockups, Fillet Welds, and Grain Flow
- Macro Examination for Pipes
Macro Examination
- Macro examination involves analyzing macro-structural features of a specimen at low magnifications after it has been etched. This technique is extensively used to evaluate steel products such as billets, bars, blooms, and forgings. It employs a graded series of images to reveal specific conditions in carbon and low alloy steels, using various etching reagents tailored to different types of steel based on their chemical composition, manufacturing processes, and heat treatments.
- Additionally, macro examinations are performed on polished and etched cross-sections of welded materials. This process helps identify weld run sequences, crucial for weld procedure qualification tests, and detect flaws such as slag inclusions, pores, incomplete weld penetration, and poor weld profiles. These defects are assessed either through routine visual inspection or up to 50X magnification. A photo macrograph, which is a permanent photographic record of the examined section, is often created for documentation purposes.