Temat: proces GTAW - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Examination of Cast Iron Material Properties by Means of the Scratch Method
Autorzy:: Trytek, A.
Orłowicz, W.
Mróz, M.
Tupaj, M.
Powiązania:: https://bibliotekanauki.pl/articles/382221.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: cast iron
structure
GTAW process
scratch test
żeliwo
struktura
proces GTAW
test zarysowania
Opis:: The paper presents results of examination of unalloyed cast iron with diversified structure of the metallic matrix carried out by means of the scratch method. The research work was carried out with cast sample plates and with castings superficially remelted by means of the Gas Tungsten Arc Welding (GTAW) method. The test was carried out with load force of 5 N. Parameters such as the coefficient of friction, penetration depth, and acoustic emission were analysed.
Źródło:: Archives of Foundry Engineering; 2012, 12, 2s; 75-80
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Surface Hardening of Nodular Cast Iron by GTAW Remelting
Autorzy:: Orłowicz, A. W.
Trytek, A.
Korzeniowski, M.
Kupiec, B.
Powiązania:: https://bibliotekanauki.pl/articles/379624.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: solidification process
mechanical properties
nodular cast iron
GTAW process
surface layer
proces krzepnięcia
właściwości mechaniczne
żeliwo sferoidalne
proces GTAW
warstwa powierzchniowa
Opis:: The study reported in this paper was aimed at establishing the effect of values of parameters characterizing the process of superficial remelting of a nodular iron casting on the quantity of introduced heat, geometry of remeltings as well as parameter λ and hardness of cementite eutectic. The remelting process was carried out using GTAW method, at electric arc length of 3 mm in argon atmosphere, welding current intensities I = 50, 130, 210, and 300 A, and electric arc scanning speeds vs = 200, 400, and 800 mm/min. The measurements included estimation of the quantity of heat introduced to the casting in the electric arc-induced remelting process with the use of flow calorimeter. Widths and depths of remetlings were assessed with the use of metallographic method. As a result of fast solidification, cementite eutectic was obtained in remelted material in which, in the course of cooling down to ambient temperature, austenite was subject to partial transformation into martensite. To characterize the cementite eutectic, value of the structural parameter λ was assessed. Values of the parameter were similar for areas of occurrence of both fibrous and laminated eutectic. Remeltings were examined at half of their depths. Micro-hardness measurements were taken in the same areas. The established quantitative relationships may prove to be useful in practice for the purpose of predicting values of parameter λ and hardness of remeltings in studies aimed at improving resistance of cast-iron castings to abrasive wear.
Źródło:: Archives of Foundry Engineering; 2018, 18, 3; 53-58
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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