Modular Investment Casting Mold for Variable Cores and Core Protection
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Solution Overview
Problem
Investment casting is a time-consuming and expensive process, particularly when precise dimensions are required, and current mold systems fail to accommodate variations in cores, leading to cracked or broken cores and imprecise casting articles, with no mechanism to proactively address core cracking or breaking challenges.
Innovation Solution
A mold system comprising separable mold portions that can be coupled together to accommodate different cores, with interchangeable versions of each portion for varying core configurations, and a thermal fluid control system to manage temperature and pressure, allowing for precise temperature control and reduced pressure injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single mold is used to form casting articles, then manufacturing precision can be maintained, but any changes in the core or component require expensive and time-consuming creation of new molds
Solution Approach 1:
The mold is divided into multiple separable portions that can be independently configured. Each mold portion can be selectively assembled to accommodate different core variations, eliminating the need to manufacture entirely new molds for design changes.
Solution Approach 2:
The mold system incorporates interchangeable and reconfigurable components that allow dynamic adaptation to different core configurations. This enables the same mold base to serve multiple design iterations without requiring permanent mold modifications.
2Productivity
If high pressure sacrificial material is injected into the mold, then casting article formation is efficient, but the core may crack or break
Solution Approach 1:
The mold system includes compliance features and flexible mold portions that are pre-designed to absorb and distribute injection pressures. This cushioning effect prevents pressure spikes from transmitting directly to the core, protecting it from cracking while maintaining efficient material injection.
3Device complexity
If conventional mold systems are used, then manufacturing process is simple, but there is no mechanism to proactively address core cracking or breaking challenges
Solution Approach 1:
The mold system incorporates pressure sensors and monitoring mechanisms that provide real-time feedback during injection. This allows the system to detect potential core stress conditions and automatically adjust injection parameters to prevent cracking, creating a proactive quality control mechanism.
Solution Approach 2:
The mold system allows dynamic adjustment of injection parameters such as pressure, temperature, and flow rate based on detected core conditions. This enables optimization of the injection process to maintain core integrity while preserving manufacturing efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The mold system enables efficient and cost-effective production of casting articles by accommodating various core configurations, reducing core damage and improving casting quality through precise temperature and pressure control, allowing for rapid design changes and cost savings.
Implementation Method 1
a sacrificial material heating system configured to heat a plurality of flows of the sacrificial material fluid to different temperatures
Data Source
AI summary
A mold system and method for forming a casting article for investment casting is disclosed. The mold system includes a mold for receiving therein a selected core chosen from a plurality of varied cores. The mold includes a plurality of separable mold portions that are coupleable together to create the mold and configured to form a sacrificial material from a sacrificial material fluid about the selected core. At least one selected separable mold portion of the plurality of separable mold portions includes a set of varied interchangeable versions of the at least one selected separable mold portion. Each varied interchangeable version of the selected separable mold portion is configured to accommodate a different core of the plurality of varied cores. A number of systems for controlling a temperature of the mold are also disclosed.