Temperature field and failure analysis of die-casting die

• Autorzy: Kosec B. , Kosec G. , Soković M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Dies for aluminium alloys die-casting fail because of a great number of a different and simultaneously operating factors. Some of them may be controlled to some extent by the die-casting experts. Design/methodology/approach: In the experimental part of our work the failures on the working surface of the fixed half of the testing die for die-casting of aluminium alloys were observed with the use of non-destructive testing methods: such as thermographic analysis, penetrants, and metallographic examination of polymeric replicas. Findings: In the process of the die-casting the primary source of loading is cyclic variation of the temperature; the influence of other loads is relatively insignificant. Research limitations/implications: For economical production of aluminium and aluminium alloys diecastings it is important that the dies have a long working life. The replacement of a die is expensive in both: money and production time. Practical implications: Beside, the die design, the material selection and the process thermal stress fatigue course, which is the consequence of the working conditions, the inhomogeneous and to low initial temperature of the die, contribute to the cracks formation. Originality/value: It is clearly seen from the presented thermographs, that the required temperatures and homogeneity of the temperature field of the discussed case are not possible to reach without the changing both: the heating method and the die design. Therefore in the first stage a solution of the problem should be in changing of the position of heating and/or cooling channels, i.e. their closer shifting to the working surface of the die.

Słowa kluczowe

EN

casting; aluminium alloys; die-casting die; temperature field; failure analysis

PL

odlewnictwo; stopy aluminium; wnęka formy ciśnieniowej; pole temperatury; analiza uszkodzeń

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2007
• Tom: Vol. 28, nr 3
• Strony: 182--187
• Opis fizyczny: Bibliogr. 25 poz., il., wykr.

Twórcy

autor

Kosec B.

autor

Kosec G.

autor

Soković M.

• Faculty of Natural Sciences and Engineering, University of Ljubljana, Askerceva 12, 1000 Ljubljana, Slovenia,

Bibliografia

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