A centrifugal casting device

Abstract

The present invention relates to a centrifugal casting apparatus. A lower mold mounted on the main frame and rotated by means of a main shaft; a lower plate which is mounted on the main frame and which is mounted on the main frame and which is rotatably mounted by means of a motor. An upper plate which is rotatably mounted on the lower surface of the upper plate and is moved by a lowering operation of the upper plate, and an upper plate which is rotatably mounted on the lower surface of the lower plate and a stripper which is located in the lower part of the lower mold and discharges the cast product from the lower mold by the up and down operation of the upper plate. The centrifugal casting device of the upper and lower molds can be close to each other and rotate together with the rotation, the upper and lower mold high temperature heating, the melt is not easy to cool, and if necessary, can quickly cool.

Description

technical field [0001] The present invention relates to a centrifugal casting device, and more specifically, relates to a centrifugal casting device for casting products by centrifugal casting after injecting high-temperature molten liquid into the inner sides of upper and lower moulds. Background technique [0002] Generally, molten metal is poured into a mold by gravity when producing a casting, but this method has limitations in producing a casting with a dense structure. As a solution to this problem, a centrifugal casting method in which molten iron is poured into a rotating mold to obtain a densely structured casting by centrifugal force is proposed. This centrifugal casting method is very suitable for manufacturing such as pipes or cylinder sleeves, metal seals Advantages such as castings that require excellent pressure resistance. [0003] In general, the centrifugal casting machine used in the centrifugal casting method consists of a disc-shaped panel driven to rot...

AI Technical Summary

Problems solved by technology

[0006] However, the natural cooling of the conventional centrifugal casting machine placed in the atmosphere has the disadvantage that it is difficult to cool the entire mold uniformly.

[0007] This is because the lower part of the mold is in surface contact with the panel, which is a structure that prevents atmospheric contact. Therefore, as far as the atmospheric cooling method of the conventional centrifugal casting machine is concerned, the entire casting cannot maintain uniform atmospheric contact and the resulting cooling. , Shrinkage toward the center of the casting occurs during cooling, so cracks (Crack) etc. occur, and there is a disadvantage of a high defect rate during casting

[0008] Furthermore, due to the high melt temperature, the upper plate and the lower plate of the mold are partially melted during casting, so there has been a problem that it is not easy to separate the casting from the mold after centrifugal casting. In addition, even if the upper and lower molds are separated from each other Strong adhesion and correct rotation operation, but there is still a problem that mutual sliding occurs due to difference in rotation speed and product failure occurs

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