Single-side bottom pouring type casting system of aluminum alloy cylinder cover

Abstract

The invention provides a single-side bottom pouring type casting system and a casting method thereof. The system is characterized in that molten aluminum alloy is introduced into a moulding entrance of an aluminum alloy cylinder cover forming mold, the moulding entrance is formed above one side of a mold cavity of the aluminum alloy cylinder cover forming mold, the lower end of the moulding entrance is connected with a sprue, the sprue is connected with a cross gate, the cross gate is equal to or lower than the bottom face of the mold cavity of the aluminum alloy cylinder cover forming mold, afilter device is arranged on the cross gate, the cross gate is connected with multiple inner gates, and the tail ends of the inner gates are connected with the bottom side of the mold cavity of the aluminum alloy cylinder cover forming mold. The filter device is arranged to filter slag inclusions and air in the molten aluminum alloy, the casting workblank rejection rate is reduced, the single-side bottom pouring and gap type inner gate ensures molten aluminum alloy mold filling stability, the control effect of the casting workblank quality is improved, the structure is simple, and the systemis easy to popularize.

Description

technical field [0001] The invention relates to a single-side bottom injection casting system for an aluminum alloy cylinder head. Background technique [0002] For the cylinder head with a height of more than 110mm, the metal mold gravity casting top injection casting method or the metal mold gravity casting double side bottom injection casting method is usually used. The disadvantages of the metal mold gravity casting top injection casting method are: when the aluminum liquid fills the mold cavity, it is easy to cause the liquid aluminum to flow unsteadily, and it is easy to cause splashes, impacts and other phenomena. Due to the splashing of aluminum water, it is easy to cause oxidation of molten aluminum, forming secondary oxidation slag, and it is not conducive to the discharge of gas in the cavity; Gas slag holes are generated on the combustion chamber surface and the intake and exhaust surfaces. Contents of the invention [0003] In order to solve the above techni...

AI Technical Summary

Problems solved by technology

The disadvantages of the metal mold gravity casting top injection casting method are: when the aluminum liquid fills the cavity, it is easy to cause the liquid aluminum to flow unsteadily, and it is easy to cause splashes, impacts, etc.

Due to the splashing of aluminum water, it is easy to cause oxidation of molten aluminum, forming secondary oxidation slag, and it is not conducive to the discharge of gas in the cavity; Gas slag holes are generated on the combustion chamber surface and the intake and exhaust surfaces