Temperature control ejector pin for casting and temperature control method thereof

Abstract

The invention discloses a temperature control ejector pin for casting which comprises a plurality of ejector pin bodies installed on a casting mold, the ejector pin bodies are used for ejecting out workpieces formed in the casting mold, cavities are formed in the ejector pin bodies, temperature control pipelines are installed in the cavities, and high-temperature-resistant media circulate in the temperature control pipelines. The temperature control pipelines are communicated with a circulating pump outside the casting mold and the temperature adjusting device to form a temperature control loop, and the temperature control loop is suitable for adjusting the temperature of the ejector pin bodies in real time, so that the temperature of the casting mold is adjusted. The temperature control ejector pin has the beneficial effects that compared with a traditional ejector pin body which only has an ejection function, the temperature control pipelines are installed in the ejector pin bodies to achieve heating and cooling of the casting mold, the functions of the ejector pin bodies can be diversified, and meanwhile the strength and the service life of the casting mold cannot be affected.

Description

technical field [0001] The present application relates to the technical field of molds, in particular to a temperature-controlling thimble for casting. Background technique [0002] Casting is a method of pouring liquid metal into the cavity of a casting mold that matches the shape of the part, and obtaining the part or blank after it is cooled and solidified. It is widely used in the metal manufacturing industry. [0003] When using gravity, low pressure, high pressure, extrusion and other casting molds for casting, if the casting mold directly contacts high-temperature liquid metal in a cold state, it is easy to cause the surface of the casting mold to heat up sharply and generate alternating thermal stress, and then the casting mold will die prematurely. of aging. At the same time, when liquid metal encounters a cold casting mold, it is easy to cause excessive condensation, resulting in insufficient pouring and forming defects; during the casting process, the mold part o...

AI Technical Summary

Problems solved by technology

[0003] When using gravity, low pressure, high pressure, extrusion and other casting molds for casting, if the casting mold directly contacts high-temperature liquid metal in a cold state, it is easy to cause the surface of the casting mold to heat up sharply and generate alternating thermal stress, and then the casting mold will die prematurely. aging

At the same time, when liquid metal encounters a cold casting mold, it is easy to cause too fast condensation, resulting in insufficient pouring and forming defects; during the casting process, the mold part of the thick and large part of the casting needs to be cooled quickly to prevent defects such as shrinkage cavities and porosity.

[0004] In the prior art, in order to solve the above problems, heating devices or heating circuits are generally added inside the mold, but this will reduce the strength and service life of the casting mold; in actual design, the mold space is limited, and it is often impossible to install heating and cooling devices alone. accomplish

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