Heat-insulating high-vacuum die-casting die

Abstract

The invention discloses a heat-insulating high-vacuum die-casting die. The heat-insulating high-vacuum die-casting die comprises a static die assembly, a movable die assembly, a vacuumizing assembly and a heat-insulating plate, wherein the static die assembly comprises a static die plate; a static lining die is arranged on the static die plate; the movable die assembly comprises a movable die plate; a movable lining die is arranged on the movable die plate; the movable lining die is abutted against the static lining die; the vacuumizing assembly comprises a vacuum pipeline; a vacuum air exhaust opening is formed in one end of the vacuum pipeline; the vacuum air exhaust opening is formed in the end surface, in contact with the movable lining die, of the static lining die; the heat-insulating plate is made of a material which is high-temperature-resistant and low in heat conductivity; and the heat-insulating plate is arranged on one side, deviated from the movable die plate, of the static die plate. Through simple structural improvement, the heat-insulating high-vacuum die-casting die can effectively keep the heat balance of a temperature field of the die, stabilize the temperature of the surface of a cavity of the die, reduce heat loss, guarantee the quality of a product and prolong the service life of the die.

Description

technical field [0001] The invention relates to the technical field of die-casting molds, in particular to a heat-insulating high-vacuum die-casting mold. Background technique [0002] The die-casting process is a mold thermal cycle process. In this mold system, the outflow of heat must be equal to the inflow of heat, otherwise the die-casting mold will become colder or hotter. In die-casting production, the heat of the casting is conducted to the mold, and the heat of the mold is conducted to the moisture of the release agent (partially evaporated) and the fluid in the cooling pipe. In the case of flow, heat conduction and heat convection are carried out at the same time. In addition, part of the heat energy of the mold is conducted to the die-casting machine. During the die-casting process, the mold temperature reaches the highest point after the metal enters the cavity, and reaches the lowest point just after spraying. The mold temperature is cyclically changed, and final...

AI Technical Summary

Problems solved by technology

The static dies of existing die-casting molds are directly attached to the die-casting machine, and the heat energy of the mold will be transmitted to the die-casting machine, making it difficult to maintain a balance in the mold temperature

[0003] In addition, the sealing performance of the existing mold itself is not perfect, and the sealing between the movable mold and the static mold is difficult to be effectively guaranteed. In the current stage of vacuum die-casting production, most of them only use simple methods such as adding a sealing ring to Realize the sealing of the die-casting mold. Such a sealing method can achieve a better sealing effect and cannot meet the requirements of modern industry for high-vacuum die-casting.

Moreover, the mold temperature also has an important impact on the high vacuum die-casting technology. The mold temperature will affect the cooling rate of the alloy. If the mold temperature field is uncontrollable, it will cause the alloy to rush into the vacuum valve core and block the valve core, making the vacuum Does not work, casting internal quality cannot be guaranteed

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