Destructive testing
Control of the mechanical properties and microstructure of the material in the initial state and after exposure
Expansion of standard samples with determination of mechanical characteristics
Analytical work with various materials and heat treatment
Preview
The laboratory of technical diagnostics, non-destructive and destructive testing has a complete list of modern high-precision equipment, staffed by highly qualified employees, which allows solving the entire list of tasks assigned to the laboratory for control, testing and research in the process of manufacturing our products.
Destructive testing today, that employees may perform, includes the following types of research and measurements: measuring hardness, strength, impact strength, relative elongation and reduction, three-point bending strength, studying the microstructure of a material (qualitative and quantitative analysis), assessing its defects depending on the type (metallurgical defect of the macrostructure, non-metallic inclusions), study of the hardenability of steels, quality control of chemical-thermal treatment. All these studies can be done in several ways. So, for example, hardness can be measured by two methods: Rockwell and Vickers, and strength can be determined in tensile tests, compression tests, in various types of non-GOST tests. All these methods individually and many combinations of them are used in incoming control, operational control, analysis of accidents and deviation maps, as well as in various types of experimental work organized by technology departments, third-party customers. To accomplish these tasks, laboratory engineers use modern measuring instruments equipped with sophisticated software. Among the auxiliary a special place is occupied by a wire-cutting electro-erosion machine, with which it is possible to cut conductive materials of any hardness. Due to the absence of restrictions on hardness and a very small cut thickness, this machine is actively used not only for the internal needs of the laboratory, but also for a number of tasks of the main production.
According to the results of the study, test reports are drawn up.
Characteristics
In the laboratory of technical diagnostics, non-destructive and destructive testing the following destructive types of material control can be performed
- Determination of mechanical properties.
- Study of the microstructure.
- Chemical analysis of metals and alloys.
The laboratory of technical diagnostics, non-destructive and destructive testing is equipped with the following modern devices for destructive testing
- Turning, milling, flat grinding, and cutting machines - for the manufacture of GOST (mechanical tests for tensile, compression, impact strength) and non-GOST objects of study.
- EDM wire-cutting machine - for cutting conductive materials with any hardness (e.g. raw or hardened steel, stainless, alloy steel, titanium, tungsten, aluminum, hard alloy, other non-ferrous and ferrous metals).
- Grinding and polishing machine - for the preparation of metallographic sections.
- Instron Universal Testing Machine - Perform tensile, compression, three-point bend, and shear tests on solder joints.
- CEAST 9300 Series Drop Weight Impact Testing System - Impact testing of steels.
- Hardness tester Emcotest N3 according to Rockwell and microhardness tester Emcotest Durascan according to Vickers - determination of the hardness of materials.
- Optical microscope Olympus GX-51 - study of the microstructure of materials.
- Muffle furnace with a maximum temperature of 1300ºC - for carrying out analytical work with various materials and heat treatment (heating, hardening, studying the hardenability of steels).
- Optical emission spectrometer “FOUNDRY-MASTER”, “PMI-Master PRO” and portable X-ray fluorescence analyzer “X-MET 800"” - for chemical analysis of materials.
Destructive testing laboratory provides a range of works
- Testing of welded joints:
- Expansion of welded specimens with determination of mechanical properties and break point;
- three-point bending with determination of mechanical properties and analysis of formed defects in the tension zone;
- determination of impact strength of weld zones;
- microhardness measurement in base metal zones, heat affected zone, fusion zone;
- microhardness measurement in base metal zones, heat affected zone, fusion zone;
- chemical analysis of the base metal.
- Study of coatings:
- measurement of coating hardness;
- microstructural analysis of the coating;
- coating thickness measurement.
- Investigation of the layer obtained by chemical-thermal treatment or spraying:
- determination of depth;
- determination of layer hardness by depth;
- determination of the chemical composition by depth;
- phase analysis.
- Steel quality control:
- expansion of standard samples with determination of mechanical characteristics;
- determination of impact strength;
- determination of hardness;
- microstructural analysis, evaluation of non-metallic inclusions;
- chemical analysis.
- Testing of aluminum alloys:
- expansion of standard samples with determination of mechanical characteristics;
- determination of material hardness.
- Solder test:
- shear stress calculation.
- Various non-welded tests (e.g. hardfacing, matrix materials).
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