- Tytuł:
-
Badanie powłok termoelementów na zwilżalność podczas kąpieli w stopach aluminium, miedzi, mosiądzu i brązu
Examination of thermocouple coating on wettability during bathing in aluminum, copper, brass and bronze alloys - Autorzy:
-
Madejski, P.
Siwek, T. - Powiązania:
- https://bibliotekanauki.pl/articles/158323.pdf
- Data publikacji:
- 2010
- Wydawca:
- Stowarzyszenie Inżynierów i Techników Mechaników Polskich
- Tematy:
-
czujniki temperatury
termoelement
pomiar temperatury
temperature detectors/sensors
thermocouple
temperature measurement - Opis:
-
Przeanalizowano metody pozwalające na wydłużenie czasu eksploatacji czujników temperatury (termoelementów) stosowanych w przemyśle hutniczym. Z doświadczenia firmy Apator KFAP wiadomo, iż stalowe osłony wykonane ze stali żaroodpornej ulegają uszkodzeniom podczas krótkotrwałych kąpieli w stopie. Proponowanym rozwiązaniem mającym na celu wydłużenie czasu eksploatacji czujnika jest napawanie cienkich warstw ochronnych niwelujących osadzanie się stopu na osłonie.
The aim of this analysis is to experimentally verify the methods which allow to extend the cover life-time of temperature-sensor (thermocouple) used in the steel industry. Many years of cooperation between the industry and Apator KFAP Company have shown that the covers currently in use get destroyed too rapidly. Usual causes of damage are mechanical damage, alloy-mold growing during even short bathing, and thermal damage, all resulting from the differences in base material and sputter coating thermal expansivity. Relying on experience and the authors' expert knowledge, Apator KFAP has come up with solutions allowing prolonged operation time of thermocouple screens used in liquid-alloy temperature quick measurement (aluminum, copper, brass and bronze). Results of the experiment show that the best and most versatile material for thermocouple coating is graphite (taking moisture absorbancy as an assessing criterion). After a bath in each of the liquid alloys it easily returned to its initial state. However, operating experience shows that the graphite, due to its fragility, is easily destroyed mechanically and requires an appropriate "culture" of use. Equally universal is the Boron Nitride, but the sputtered layer has to be renewed from time to time however. As a result, the use of this solution is a bit more time consuming. Based on the conducted studies it seems obvious that there is still a need for continuing research on the development of methods of the deposition of thin, persistent layers of Boron Nitride (BN) on a steel base. Researchers should pay particular attention to the conductivity and thermal expansion for steel and deposition layer. - Źródło:
-
Pomiary Automatyka Kontrola; 2010, R. 56, nr 10, 10; 1243-1247
0032-4140 - Pojawia się w:
- Pomiary Automatyka Kontrola
- Dostawca treści:
- Biblioteka Nauki
Artykuł