Structural Changes of Hot Work Tool Steel due to Heat load

Stanislav Krum; Františka Pešlová; Jakub Horník; Maxim Puchnin

doi:10.4028/www.scientific.net/SSP.270.34

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Material Analysis of the Extended-Life Cobalt-Based Superalloys Used in the Manufacturing of Glass Tools
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Operational Degradation of Spheroidal Graphite Cast Iron EN GJS SiMo
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Structural Changes of Hot Work Tool Steel due to Heat load
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Structural Changes of Hot Work Tool Steel due to Heat load

Abstract:

The paper deals with the influence of thermal load on functionality of the Toolox 33 hot work tool steel equivalent to the materials of W.Nr. 1.2311, 1.2312, 1.2738 and P20 in order to assess its suitability as a material for glass manufacture preform. Using light and electron microscopy it was shown that the steel was highly unfitting for this application where the steel comes into contact with the hot glass. Regarding the evaluation of the microstructure, it was shown that intense decarburization reflecting on the fracture behaviour of the surface layer during the thermal load has occurred. This fact was confirmed by a static tensile test and hardness measurements. Moreover, the thick layer of flakes has formed on the surface.

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Periodical:

Solid State Phenomena (Volume 270)

Pages:

34-38

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.270.34

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Online since:

November 2017

Authors:

Stanislav Krum*, Františka Pešlová, Jakub Horník, Maxim Puchnin

Keywords:

Decarburization, Degradation, Glass Mould, Hot Work Tool Steel

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