Influence of Cryogenic Temperatures on Mechanical Properties of Valve Seats of Internal Combustion Engines

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F20%3A00007912" target="_blank" >RIV/46747885:24210/20:00007912 - isvavai.cz</a>
Result on the web
<a href="https://www.actamechanica.sk/pdfs/ams/2019/04/08.pdf" target="_blank" >https://www.actamechanica.sk/pdfs/ams/2019/04/08.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21496/ams.2020.006" target="_blank" >10.21496/ams.2020.006</a>

Result language
angličtina
Original language name
Influence of Cryogenic Temperatures on Mechanical Properties of Valve Seats of Internal Combustion Engines
Original language description
Valve seats of internal combustion engines are used in cylinder heads, due to increase the strength and abrasion resistance of the intake and exhaust valve seats. Valve seats are made from alloy cast iron, high-alloy steels, wear-resistant alloys and seats made using powder metallurgy. The valve seats are pressed into the head. Some materials must be deep-frozen before pressing to reduce the pressing overlap. The overlap is large, in the order of tenths of a millimetre, due to the guaranteed seating of the seat in the cylinder head. The amount of overlap depends also on the material of the cylinder head. Liquid nitrogen (about -196 °C) is used for freezing. In our case, these are monometallic seats, made by technology of precision casting from cobalt alloys. A particular type of cobalt alloy uses the trade name STELLITE.
Czech name
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Czech description
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Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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