Anti-swelling steel sheet casting equipment for aluminum piston

Abstract

The invention provides anti-swelling steel sheet casting equipment for an aluminum piston. The equipment comprises a casting liquid storage bin, a negative pressure mechanism and a casting mold cavity; the top of the casting liquid storage cabin is provided with the negative pressure mechanism, the casting mold cavity is arranged in the casting liquid storage cabin, the negative pressure mechanismis used for absorbing air in the casting mold cavity in a negative pressure manner to enable the casting mold cavity is filled with casting liquid. The casting equipment has the advantages that air inside the casting mold cavity is absorbed through the negative pressure mechanism, so that the casting liquid enters the interior of the casting mold cavity from the bottom of the casting mold cavity,bubbles generating phenomenon in the casting liquid can be eliminated, the air discharged by the negative pressure mechanism is introduced into the casting liquid storage bin, so that a piston in thecasting liquid storage bin moves downwards, the casting liquid in the casting liquid storage bin can enter the casting mold cavity quickly, the casting efficiency can be improved while the bubbles inthe casting liquid are eliminated, and the using effect is better.

Description

technical field [0001] The invention relates to the technical field of pistons, in particular to anti-expansion steel sheet casting equipment for aluminum pistons. Background technique [0002] The different working temperature of each part of the piston and the difference in the expansion characteristics of the aluminum alloy piston and the cast iron cylinder liner make it difficult to control the gap between the piston skirt and the cylinder liner. Even the most efficient skirt shapes cannot overcome the differential expansion rates between the piston and cylinder. The anti-expansion steel sheet is applied on the piston. Due to the existence of the anti-expansion steel sheet, the deformation of the piston can be effectively controlled, thereby reducing the gap between the cylinders, improving fuel economy and strengthening noise control. [0003] However, when the existing anti-expansion steel sheet casting equipment is used, during the casting process, air bubbles are ea...

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Problems solved by technology

[0003] However, when the existing anti-expansion steel sheet casting equipment is used, during the casting process, air bubbles are easily generated inside the casting liquid, which affects the processing effect, and the anti-expansion steel sheet is prone to shrinkage during the casting process, making the anti-expansion steel sheet The later use effect is not good

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