A method for lost foam casting

By constructing an XY two-dimensional coordinate system to analyze the influence of venting and air pressure, and adjusting the venting and temperature during the casting process, the problem of insufficient air pressure control inside the mold in the existing technology is solved, thereby improving casting efficiency and product quality.

CN119681207BActive Publication Date: 2025-10-28CHEN HSONG PRECISION EQUIPMENT (SHANTOU) CO LTD
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Patent Information

Application Number
CN202411747171.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-10-28
Estimated Expiration
2044-11-29

AI Technical Summary

Technical Problem

In existing technologies, monitoring and analyzing the internal air pressure of the mold during the casting process can prevent the reduction in casting efficiency and product quality caused by excessive internal air pressure. However, when the internal air pressure is too high, the parameter control is insufficient, making it difficult to solve the problem in a timely and effective manner.

Method used

By acquiring the internal air pressure and exhaust velocity of the mold during the casting process, an XY two-dimensional coordinate system is constructed. The exhaust influence value is analyzed and compared with the exhaust influence threshold to generate non-exhaust influence signals or exhaust influence signals, and adjustment commands are sent to the negative pressure system. At the same time, based on the non-exhaust influence signals, the casting speed and the internal temperature of the mold are processed to generate air pressure influence values, and adjustment commands are sent to the temperature control system and the casting system to adjust the casting process.

Benefits of technology

This effectively avoids excessive internal air pressure caused by exhaust system problems, improves casting efficiency and product quality, and ensures the surface finish and dimensional accuracy of castings.

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Abstract

This invention belongs to the field of casting engineering technology, specifically a lost foam casting method, comprising: Based on data processing of the internal air pressure and venting speed of the mold during the pouring process within a monitoring period, this invention analyzes the impact of venting speed on the internal air pressure of the mold during the pouring process, determines whether the venting system needs adjustment, and avoids excessive internal air pressure during the pouring process due to problems with the venting system, which could affect product quality; by processing data on the pouring speed and internal temperature of the mold, this invention analyzes the impact of pouring speed and internal temperature on the internal air pressure of the mold during the pouring process, avoiding excessively fast pouring speed and excessively high internal temperature affecting product quality, and improving casting efficiency.
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