Hollow-out volute mold, hollow-out volute and manufacturing method of hollow-out volute
By opening a hole in the middle of the supercharger vortex and setting a shrinkage hole in the mold, the problems of vortex lightweight and exhaust valve body shrinkage are solved, and lightweight and airtightness are improved.
CN120362427APending Publication Date: 2025-07-25KEHUA HLDG
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Patent Information
- Application Number
- CN202510482260.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2025-07-25
AI Technical Summary
Technical Problem
The existing supercharger vortex is closed in the middle, making it difficult to achieve lightweight processing of the vortex. At the same time, the exhaust gas valve body shrinks and loosens, which affects the air tightness.
Method used
A hollow scroll mold is designed. A hole is opened in the middle of the scroll body, and a shrinkage hole is set in the mold to delay the solidification time by delaying the solidification time of the metal liquid, and a cast cavity is formed using the outer shell core and the inner core to ensure the molding of the hole.
Benefits of technology
Realize the lightweight of the vortex and improve the casting quality, prevent the exhaust gas valve body from shrinking and improving airtightness.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the field of casting production and manufacturing, in particular to a hollow volute which comprises a volute body formed through integral casting, and the volute body comprises a middle hole body, a runner body and an exhaust body. A hollow hole is formed in the middle of the volute body. A mold for a hollow volute comprises an outer shell core, an inner channel core and a middle core, and the two ends of the middle core are connected with the inner wall face of the outer shell core. And the feeding hole is formed in the shell core. A method for hollowing out a volute comprises the steps that molten metal is injected into a pouring cavity of a mold, the molten metal enters a feeding hole from a riser, the molten metal in the feeding hole lifts a temperature field of a corresponding waste gas valve body area on a shell sand core, the solidification time of the molten metal in the pouring cavity in the area is delayed, and therefore shrinkage porosity of the waste gas valve body on an exhaust body is prevented. A hollow hole is formed in the middle of the poured volute, the overall weight of the volute is reduced, and the volute is light.
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