Preheating device of round bar mold insert used for cast

Abstract

The invention discloses a preheating device of a round bar mold insert used for cast. The preheating device comprises a heating mechanism and a support with an upper layer, a middle layer and a lower layer, wherein the heating mechanism is positioned on the lower layer of the support; the upper layer of the support is provided with an emptying chamber (11), the middle layer of the support is provided with an oblique blanking plate (16), and the upper end of the blanking plate (16) is connected with a blanking port (12) at the lower end of the emptying chamber (11); the lateral dimension of the blanking port (12) is greater than the diameter of a round bar mold insert (15) and less than the sum of the diameters of two round bar mold inserts (15), and the lower end of the blanking plate (16) is a taking material port; due to adopting the above structure, the aluminum bar mold insert with concurrent temperature can be continuously provided.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a preheating device for casting round bar inserts suitable for the production of aluminum castings of gravity casting and low pressure casting. Background technique [0002] Hot joints are nodes or areas where the temperature of the local metal in the mold is higher than the surrounding temperature during the solidification process of casting production, so the solidification is slow. Therefore, shrinkage and porosity will occur at these hot joints. At present, in the gravity casting and low-pressure casting of aluminum alloys, in order to reduce casting hot spots and improve casting quality, there are some special parts on castings, such as thick and large parts of castings, which need to place round rod-shaped aluminum parts. These aluminum round rods will be preheated before use, and the preheating of the prior art usually involves directly spreading these round rods on a shel...

AI Technical Summary

Problems solved by technology

[0003] 1) Since the round rod inserts are placed on the shelf in batches for heating, when the temperature reaches the predetermined temperature, the batch of round rods will be removed from the shelf. In this case, the previous batch of round rods After the heating is completed, it is necessary to wait for the preheating of the next batch of round rods, which will cause an interval of time in the production of castings, which is not conducive to the continuity of production;

[0004] 2) At the same time, when a batch of round rods is heated, the temperature of all the round rods is the same, and the operator uses these round rods one by one, and the use of the first to the last round rod will There is a time difference, therefore, the use temperature of the first round bar to the last round bar is gradually reduced, which affects the consistency of the preheating temperature of the round bar

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