Buffer structure and use method for investment casting of thin-walled parts

By designing a cache structure in wax mold casting, gathering and collecting gases in the casting liquid, the problems of casting liquid breakage, shrinkage holes and loose R angles during casting of thin-walled parts are solved, and the casting quality and product qualification rate are improved .

CN110538966BActive Publication Date: 2025-02-11XIAN HAOSEN PRECISION CASTING
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Patent Information

Application Number
CN201910945370.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-09-30
Publication Date
2025-02-11
Estimated Expiration
2039-09-30

AI Technical Summary

Technical Problem

During wax mold casting, thin-walled parts are prone to problems such as casting liquid breakage, bottom surface shrinkage and internal R angle looseness, resulting in low quality of casting and easy to be contaminated.

Method used

A cache structure is designed, including a type shell, gate cup and cache port. The cache port is composed of a wax discharge rod and a cache port body. The upper part of the cache port body is an inverted hollow circular table and the lower part is a cylinder, which is used to gather and pour. and collect the gas therein to prevent shrinkage and loosening.

Benefits of technology

Through the use of the cache structure, the shrinkage holes and R angle loosening on the casting are effectively reduced, preventing the casting liquid from breaking, and improving the quality of the casting and the product pass rate.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention proposes a buffer structure and a method for use in investment casting of thin-walled parts, belonging to the technical field of investment casting, which specifically includes a mold shell, a pouring cup and a buffer port arranged on the mold shell, the pouring cup is integrally fixed to the upper end surface of the mold shell, the buffer port is arranged on the mold shell or the pouring cup, and the buffer port is at least one. The purpose of the present invention is to solve the problem that shrinkage cavities are prone to appear on the bottom surface of the casting and R angle looseness is prone to appear inside the product during the investment casting process of the prior art.
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Citation Information

Patent Citations

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  • Horizontal parting integration mold and molding machine with horizontal parting integration mold

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  • Pin type dewaxing stick for investment casting

    CN205020750U

  • Buffer structure for investment casting of thin-walled part

    CN210817327U