SU1260111A1 - Metal mould - Google Patents

Description

The invention relates to foundry, in particular to casting in metal molds.

The purpose of the invention is to simplify the design and lower the quality of the castings.

Hd FIG. 1 shows a metal mold at the time of pouring; in fig. 2 - chill at the time of formation of an artificial discharge gap.

The mold contains detachable side parts 1 with actuators 2 moving them mounted on the tuck plate 3. The column 5 is fixed with axial movement of the pallet 5 and the spring 6 is placed with the washer 7. On the pallet 5, projections 8 are made with 45 surfaces obliquely angled at 45, On the side parts 1 of the mold, protrusions 10 are made with surfaces 11 beveled at an angle of 45. Performing bevels at an angle of 45 ensures the simultaneous movement of the pallet and side parts of the mold, resulting in the formation of equal gaps officials are already casting and permanent mold casting, pallet. The cavity of the casting is formed by a rod 12 fixed on the column 4. On the under-cutting plate 3 there are fixed horizontal guides 13, which interact with the upper end faces of the lateral parts 1 of the chill mold.

Kokil works as follows

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The melt is poured into the chill mold and held until a solid crust forms on the surface of the casting, ensuring that the casting configuration is preserved. Then the sides 1 of the chill mold are retracted from the casting to create an adjustable air gap. The gap serves as a thermal resistance regulating the cooling rate of the casting, ensuring that the castings are obtained without chill. When moving the side parts 1, the projections 10 interact with the beveled surfaces 11 with the beveled surfaces 9 of the projections 8 of the pallet, moving it downward from the casting, i.e. at the same time, a lower artificial air gap of the same size as that of the side is formed. After soaking in a uniform gap, the casting is removed, and the sump 5 as the side parts 1 are displaced, the chill mold, pressed by the spring 6, rises up.

The use of the invention makes it possible to simplify the construction of the chill mold due to the absence of a mechanism for moving the pallet and to improve the quality of the castings due to the synchronous formation of the lower and lateral gaps, as a result of which a homogeneous structure of the lower and lateral parts of the casting is formed. Castings with the same structure of the surface layers have uniform wear, which allows to increase the service life of parts by 1, 5 times.

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Compiled by L, Zhukova Editor E. Kopcha Tehred A. Kravchuk. Proofreader O. Lugova

order 5165/8

Circulation 757

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

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Claims (2)

R? COGILL containing a chill plate, detachable side parts with drives for their movement, axial movement on the column, and a rod mounted on the column, characterized in that, in order to simplify the design and improve the quality of castings, the side parts of the chill mold and the pallet have protrusions interacting with each other with the other along bevelled surfaces at an angle of 45, while the pallet is spring-loaded. 2. Chill on π. 1, characterized in that it is provided with horizontal guides interacting with the upper ends