Effect of mould heating temperature on cooling rate of the melt upon bronze crystallization

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The article presents the cooling curves of the tin-leaded bronze melt (consists of 10% of lead, 10% of tin, and 80% of copper) being poured in the moulds of various thermal conductivities: massive cast iron chill mould (with the 1:8 cast mass to mould mass ratio) and graphite mould. The curves were plotted for the moulds previously heated to the temperatures of 20; 200; 400; 600; 800 °С. Plotting of the curves was performed with the use of the device Thermograph designed at Tomsk Polytechnic University. The device records thermal electromotive force values of the chromel-alumel thermocouple and converts them into temperature values. The cooling curves are used to determine melt cooling rates within the temperature range involving the crystallization range. It is shown that under similar conditions the cooling rate when casting in cast iron mould is 30-40% higher than in the case of casting in graphite mould. The data given in the paper indicate that preheating of the mould enables us to considerably reduce the cast cooling rate and prolong the period of the melt being in liquid state. It is worth mentioning that cooling rate values of the preheated and non-heated casting moulds are most vividly observed at the initial moments after the melt pouring. When decreasing the casts’ cooling to 300-400 °С the cooling rates tend to be identical. In the article, the numerical data of cooling rates for various mould heating temperatures are presented.

Original languageEnglish
Title of host publicationInnovative Technologies and Economics in Engineering
PublisherTrans Tech Publications Ltd
Pages231-235
Number of pages5
ISBN (Electronic)9783038352815, 9783038352815
DOIs
Publication statusPublished - 1 Jan 2014
Event5th International Scientific Practical Conference on Innovative Technologies and Economics in Engineering, 2014 - Yurga, Russian Federation
Duration: 22 May 201423 May 2014

Publication series

NameApplied Mechanics and Materials
Volume682
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference5th International Scientific Practical Conference on Innovative Technologies and Economics in Engineering, 2014
CountryRussian Federation
CityYurga
Period22.5.1423.5.14

Fingerprint

Bronze
Crystallization
Cooling
Heating
Temperature
Casting
Cast iron
Tin
Graphite
Electromotive force
Preheating
Thermocouples
Thermal conductivity
Lead
Copper
Liquids

Keywords

  • Casting moulds
  • Cooling curves
  • Cooling rate
  • Crystallization temperature
  • Tin-leaded bronze

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Martyushev, N. V., & Petrenko, YN. (2014). Effect of mould heating temperature on cooling rate of the melt upon bronze crystallization. In Innovative Technologies and Economics in Engineering (pp. 231-235). (Applied Mechanics and Materials; Vol. 682). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/AMM.682.231

Effect of mould heating temperature on cooling rate of the melt upon bronze crystallization. / Martyushev, Nikita V.; Petrenko, Yuriy Nikolaevich.

Innovative Technologies and Economics in Engineering. Trans Tech Publications Ltd, 2014. p. 231-235 (Applied Mechanics and Materials; Vol. 682).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Martyushev, NV & Petrenko, YN 2014, Effect of mould heating temperature on cooling rate of the melt upon bronze crystallization. in Innovative Technologies and Economics in Engineering. Applied Mechanics and Materials, vol. 682, Trans Tech Publications Ltd, pp. 231-235, 5th International Scientific Practical Conference on Innovative Technologies and Economics in Engineering, 2014, Yurga, Russian Federation, 22.5.14. https://doi.org/10.4028/www.scientific.net/AMM.682.231
Martyushev NV, Petrenko YN. Effect of mould heating temperature on cooling rate of the melt upon bronze crystallization. In Innovative Technologies and Economics in Engineering. Trans Tech Publications Ltd. 2014. p. 231-235. (Applied Mechanics and Materials). https://doi.org/10.4028/www.scientific.net/AMM.682.231
Martyushev, Nikita V. ; Petrenko, Yuriy Nikolaevich. / Effect of mould heating temperature on cooling rate of the melt upon bronze crystallization. Innovative Technologies and Economics in Engineering. Trans Tech Publications Ltd, 2014. pp. 231-235 (Applied Mechanics and Materials).
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AB - The article presents the cooling curves of the tin-leaded bronze melt (consists of 10% of lead, 10% of tin, and 80% of copper) being poured in the moulds of various thermal conductivities: massive cast iron chill mould (with the 1:8 cast mass to mould mass ratio) and graphite mould. The curves were plotted for the moulds previously heated to the temperatures of 20; 200; 400; 600; 800 °С. Plotting of the curves was performed with the use of the device Thermograph designed at Tomsk Polytechnic University. The device records thermal electromotive force values of the chromel-alumel thermocouple and converts them into temperature values. The cooling curves are used to determine melt cooling rates within the temperature range involving the crystallization range. It is shown that under similar conditions the cooling rate when casting in cast iron mould is 30-40% higher than in the case of casting in graphite mould. The data given in the paper indicate that preheating of the mould enables us to considerably reduce the cast cooling rate and prolong the period of the melt being in liquid state. It is worth mentioning that cooling rate values of the preheated and non-heated casting moulds are most vividly observed at the initial moments after the melt pouring. When decreasing the casts’ cooling to 300-400 °С the cooling rates tend to be identical. In the article, the numerical data of cooling rates for various mould heating temperatures are presented.

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