A combined riser for low pressure casting of aluminum alloys and method of making and using the same
By using a combined riser design, and employing graphite and heat-resistant steel materials and phase change plug-free connections, the problem of riser tubes being prone to deformation or breakage at high temperatures is solved. This achieves a tight bond between the materials, improving service life and thermal shock resistance.
CN119457008BActive Publication Date: 2026-07-14YANGZHOU UNIV
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Patent Information
- Application Number
- CN202411928276.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-07-14
- Estimated Expiration
- 2044-12-25
AI Technical Summary
Technical Problem
Existing riser tubes are prone to deformation or breakage at high temperatures, and the metal and non-metal protective plates are poorly bonded, resulting in a short service life and high manufacturing difficulty and cost.
Method used
The riser liner and outer sleeve made of graphite are combined with the riser base tube made of heat-resistant steel. The first and second connection holes are formed by phase change plugging connection. Then, brass liquid is cast in a vacuum casting equipment to form a thin brass sheet to enhance the bonding force.
Benefits of technology
It effectively eliminates the gaps between materials, improves thermal shock resistance and service life, and ensures the stability and reliability of the low-pressure casting process of aluminum alloys.
✦ Generated by Eureka AI based on patent content.
Abstract
The application discloses a combined liquid lifting pipe for low-pressure casting of an aluminum alloy, which comprises a liquid lifting lining pipe, the outer periphery of the liquid lifting lining pipe is fixedly connected with a liquid lifting base pipe, the outer periphery of the liquid lifting base pipe is fixedly connected with a liquid lifting sleeve pipe, the material of the liquid lifting base pipe and the liquid lifting sleeve pipe is graphite, and the material of the liquid lifting lining pipe is heat-resistant steel; the combined liquid lifting pipe is connected among components, effectively eliminates the gap between the combined liquid lifting pipe and different materials, and solves the problem that the metal base pipe and the non-metallic protective sheet of the composite material liquid lifting pipe are not combined well.
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