Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: mould material

Sortuj według:

Ogranicz wyniki do:

Evaluation of the Temperature Distribution of a Die Casting Mold of X38CrMoV5_1 Steel

Majernik J., Podařil M.

Archives of Foundry Engineering

2019

iss. 2

107--112

Relatively cold die material comes into contact with the substantially higher temperature melt during the casting cycle, causing high thermal fluctuations resulting into the cyclic change of thermal field. The presented contribution is devoted to the assessment of the impact of temperature distribution on individual zones in the die volume. The evaluated parameter is the die temperature. It was monitored at two selected locations with the 1 mm, 2 mm, 5 mm, 10 mm and 20 mm spacing from the die cavity surface to the volume of cover die and ejector die. As a comparative parameter, the melt temperature in the middle of the runner above the measuring point and the melt temperature close to the die face were monitored. Overall, the temperature was monitored in 26 evaluation points. The measurement was performed using the Magmasoft simulation software. The input settings of the casting cycle in the simulation were identical to those in real operation. It was found, that the most heavily stressed die zones by temperature were within the 20 mm from the die face. Above this distance, the heat supplied by the melt passes gradually into the entire die mass without significant temperature fluctuations. To verify the impact of the die cooling on the thermal field, a tempering system was designed to ensure different heat dissipation conditions in individual locations. At the end of the contribution, the measures proposals to reduce the high change of thermal field of dies resulting from the design of the tempering channel are presented. These proposals will be experimentally verified in the following research work.

Metoda bilansowania materiałów formierskich w procesie odlewania

Dzwonnik I.

Archiwum Odlewnictwa

2002

R. 2, nr 5

39--47

W artykule przedstawiono metodę budowy i funkcjonowania bilansu materiałów biorących udział w procesie wytwarzania odlewów. Ważna cechą przyjętej metody jest przyporządkowanie bilansów cząstkowych obejmujących wszystkie materiały biorące udział w procesie wytwarzania oraz zamykanie bilansu na każdym etapie procesu. Podstawowym bilansem jest dzienny rozchód materiałów, który stanowi składową bilansów tygodniowych i następnie miesięcznych itd. Przedstawiono również konieczne warunki do wprowadzenia bilansu w odlewni.

Method of balancing moulding materials in a casting process has been presented in the paper. The assignment of all used materials in the balance and closing of the balance in every stage of the process are the important features of the elaborated method. The basic element of the balance is daily expenditure of materials, which in turn is the component of weekly, and in consequence monthly consumption of materials, etc. The necessary conditions for implementation of the balance in a casting house are also presented.