Structure and qualities of heat-strengthened reinforcement made of steel Ст3Гпс

Authors

  • Дмитро Юрійович Клюєв DVNZ “Krivoy Rog national University” Str. 22th Partsiezda,11, Krivoy Rog, Ukraine, 50027, Ukraine
  • Сергій Борисович Комлєв SRD №2, «Arcelor Mittal Krivoy Rog» Krivoy Rog, str. Ordzonikidze, 1, 50095, Ukraine
  • Сергій Олегович Мацишин DVNZ “Krivoy Rog national University” Str. 22th Partsiezda,11, Krivoy Rog, Ukraine, 50027, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2013.12415

Keywords:

Heat-strengthening, microstructure, heat-strengthened reinforcement, intensive cooling, periaxial volume, interupted hardening

Abstract

The article presents the results of our studies in the field of heat-strengthening. To obtain the reinforcement with the necessary microstructure along the cross-section we have developed three modes of heat-strengthening of the steel Ст3Гпс, which varied by pressure of water, fed into sections. The microstructure analysis showed that the higher intensity of cooling mode 1 formed a layer with high hardness, ~ 0.5 mm greater than after the modes 2 and 3. However, hardness on the surface of the sample after application of the 1 mode is less than or equal to the hardness of samples 2 and 3, respectively. It was also found that in the composition of volume of the rebar one should distinguish the periaxial volume, which is located 0.67 - 0.70 of length of the radius from the axis of the rod to the surface, and the volume concluded between the periaxial volume and a layer of martensite formed in the period of rapid cooling.

The above results, obtained from experiments in the flow of small section mill 250-1 PAO "AMKR", confirmed the possibility of obtaining new data on the temperature changes occurring during the application of the method of interrupted hardening, affecting the stability of austenite. The effect of temperature cyclic changes is distributed in reinforcement at a depth of approximately one-third of the nominal radius of the rod

Author Biographies

Дмитро Юрійович Клюєв, DVNZ “Krivoy Rog national University” Str. 22th Partsiezda,11, Krivoy Rog, Ukraine, 50027

Ph.D.

Department of Metallurgical technology

Сергій Борисович Комлєв, SRD №2, «Arcelor Mittal Krivoy Rog» Krivoy Rog, str. Ordzonikidze, 1, 50095

Chief assistant of department from technology

Сергій Олегович Мацишин, DVNZ “Krivoy Rog national University” Str. 22th Partsiezda,11, Krivoy Rog, Ukraine, 50027

Postgraduate student

Department of Metal pressure working and metallurgical equipment

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Published

2013-04-25

How to Cite

Клюєв, Д. Ю., Комлєв, С. Б., & Мацишин, С. О. (2013). Structure and qualities of heat-strengthened reinforcement made of steel Ст3Гпс. Eastern-European Journal of Enterprise Technologies, 2(5(62), 46–50. https://doi.org/10.15587/1729-4061.2013.12415

Issue

Vol. 2 No. 5(62) (2013): The applied physics and materials technology

Section

Applied physics

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Copyright (c) 2014 Дмитро Юрійович Клюєв, Сергій Борисович Комлєв, Сергій Олегович Мацишин

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