Spray nozzle flame heating device for casting die

Abstract

The invention relates to a spray nozzle flame heating device for a casting die, and belongs to the technical field of metallurgical casting. One end of a base of the device is hinged with one end of aswing rod through a stand; a vertical moving pair is formed by the other end of the base and a guiding column of which the lower end is fixed with a flame spray nozzle; a moving pair is formed by theupper end of the guiding column and a sliding groove formed in the other end of the swing rod through a pin shaft; cam supports fixed to the base are arranged between the stand and the guiding column; a rotatable cam forming a cam pair together with the middle part of the swing rod is supported on the cam supports; an air-driven impeller is also supported on the cam supports; and the impeller isin transmission connection with the cam through speed reduction transmission. After the device disclosed by the invention is adopted, because the flame spray nozzle can do a reliable motion accordingto an ideal lifting rule, heating is stable and uniform, an operation is safe and convenient, later-period casting quality is effectively ensured, and die damage caused by local over-heat is completely avoided.

Description

technical field [0001] The invention relates to a heating device, in particular to a casting mold nozzle flame heating device, which belongs to the technical field of metallurgical casting. Background technique [0002] In the metal mold casting process of aluminum castings, in order to achieve smooth filling of the castings, the mold needs to be heated to a temperature above 350°C before pouring, so as to facilitate the sequential solidification of the castings. Commonly used heating methods for metal mold casting molds are: 1) using molten metal to iron the mold, which is only suitable for small parts. For larger castings, the mold needs to be ironed repeatedly, and the efficiency is extremely low; 2) using electric heating, not only the cost is high , and it is necessary to drill holes on the mold to insert heating pipes. For medium and large molds, it is often difficult to heat to the required temperature due to faster heat dissipation; 3) Flame heating is the most widel...

AI Technical Summary

Problems solved by technology

Commonly used heating methods for metal mold casting molds are: 1) using molten metal to iron the mold, which is only suitable for small parts. For larger castings, the mold needs to be ironed repeatedly, and the efficiency is extremely low; 2) using electric heating, not only the cost is high , and it is necessary to drill holes on the mold to insert heating pipes. For medium and large molds, it is often difficult to heat to the required temperature due to faster heat dissipation; 3) The use of flame heating is the most widely used

However, the traditional flame-heated low-pressure casting mold is operated with a hand-held flame spray gun, which is not only inconvenient to operate, but also has potential safety hazards, and it is difficult to ensure that the mold is heated evenly as required, which easily leads to casting defects and easily affects the life of the mold due to local overheating of the mold cavity

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