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Strength analysis of refractory concrete with SiO2 microdust
Antanas Ciuplys 한양대학교 세라믹연구소 2015 Journal of Ceramic Processing Research Vol.16 No.6
In the current paper, the investigation of the strength of refractory concrete with SiO2 microdust is presented. The influence of the sintering temperature and the high temperature stream of combustion products is discussed. It is shown that the strength of the refractory concrete samples treated in the stream of combustion products depends on their preparation for working under such conditions. Due to a different degree of sintering the samples strength is not identical and decreases withthe growth of sintering temperature.
Saulius Baskutis,Jolanta Baskutiene,Regita Bendikiene,Antanas Ciuplys 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.2
The effect of different welding parameters on the mechanical properties and tensile behavior of tungsten inert gas (TIG) welded joints was analyzed. Four different groove angles were chosen, 60°, 70°, 80° and 90°, to ascertain the tendency of microstructure formation and quality of the weld. Mechanical properties were assessed in the terms of Vickers HV1 hardness. Microanalysis of test samples produced using different current 165 A, 180 A, 200 A with same groove angle of 90° was done in fusion, partially melted, and heat affected zone;all the images showed good penetration and clear transition from one to following zone. The transverse tensile tests were accomplished on the welded joints to evaluate influence of welding parameters and groove geometry to the joint tensile strength and its behavior during exploitation. It was verified that the tensile strength of the welds is closely related to the welding parameters. The chosen 180 A welding current ensured highest tensile strength of test samples; the same as proper selection of groove angle (90°) provides good fusion and high quality of major welds. The results revealed that the weld penetration depends on welding current.