Gravity casting technology for alloying furnace end

Abstract

The invention relates to a gravity casting technology for an alloying furnace end. The method comprises the steps that an upper insert and a middle insert are placed in a casting die of each of a furnace end main body, a small-end ejector pipe and a big-end ejector pipe, wherein each casting die comprises an upper die, a lower die and a sand core; a feeding hole A and an exhaust channel are arranged on the end surface of the big-end ejector pipe, wherein in the casting die, the thickness of a casting main channel A of the pipe wall of the big-end ejector pipe is 1-2mm more than that of the exhaust channel A of the big-end ejector pipe to form a hollow cavity with a thick lower part and a thin upper part; the casting molding is carried out by using the gravity casting technology on a gravity casting machine, aluminum water is poured into the casting main channel A from the feeding hole A and then flows into the exhaust channel, and finally, exhaust is discharged from an exhaust hole A. The gravity casting technology has the benefits that the oxidation resistance of the product can be guaranteed, and the processes of spray coating, electroplating and the like are not needed so that the whole production process is environmental-friendly; a casting is high in temperature resistance, smooth in surface and easy for treatment and has a strong grade sense of appearance.

Description

technical field [0001] The invention relates to the field of cooking utensils, in particular to a gravity casting process for an alloy stove head. Background technique [0002] At present, the Venturi structure burners used in household gas cookers in the market are mostly produced by the cast iron process, which seriously pollutes the environment, and the cast iron burners need anti-rust treatment, such as: spraying high-temperature paint, electroplating treatment, etc. These processes are harmful to the environment. The pollution is serious, and the product is still prone to rust after being used for a period of time, which affects the service life. The surface finish of the cast iron casting furnace head cannot be guaranteed, which affects the appearance of the product, and the process itself has defects such as trachoma, sand swelling, and sand inclusions, which affect the product. Pass rate. Although there are some aluminum alloy die-casting furnace heads designed and ...

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Problems solved by technology

[0002] At present, the Venturi structure burners used in household gas cookers in the market are mostly produced by the cast iron process, which seriously pollutes the environment, and the cast iron burners need anti-rust treatment, such as: spraying high-temperature paint, electroplating treatment, etc. These processes are harmful to the environment. The pollution is serious, and the product is still prone to rust after being used for a period of time, which affects the service life. The surface finish of the cast iron casting furnace head cannot be guaranteed, which affects the appearance of the product, and the process itself has defects such as trachoma, sand swelling, and sand inclusions, which affect the product. Pass rate

Although some aluminum alloy die-casting furnace heads are designed and used, the structure is changed to meet the process requirements, which reduces the product performance

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