INVESTIGATION METHOD OF STRUCTURE OF TUBE STEELS

摘要

FIELD: metallurgy.;SUBSTANCE: invention refers to investigation of structure of high-strength steels. Method involves interaction of tube steel specimen with water solution of sulphosalts, further flushing and drying of specimen and detection of areas of bainite of rack morphology by means of optic microscope. At that, after application to specimen surface of water solution of sulphosalts, there removed is formed film, and bainitic areas are detected by means of polarised light of optic microscope; after that, obtained pictures of specimen are fixed and parameters of the detected bainitic areas of rack morphology are determined.;EFFECT: method allows detecting structure of high-strength tube steel as a result of evaluation of which the conclusion can be made on metallurgical quality of tube steel.;4 dwg