Casting Mold Composition with Exothermic Silicon Compound
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Solution Overview
Problem
Existing compositions for forming casting molds often have excessively long curing times, leading to poor productivity due to insufficient casting mold strength.
Innovation Solution
A composition comprising heat-resistant inorganic particles, a waterglass-based binder, a surfactant, a silicon-containing compound, activated carbon powder and grain, and water, which maintains fluidity during filling and promotes timely heat generation for rapid curing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a surfactant (foaming agent) is used to improve fluidity, then fluidity is improved, but curing time becomes excessively long
Solution Approach 1:
A silicon-containing compound (metal silicon or ferrosilicon) is introduced as an intermediary substance that reacts with water to generate silicon dioxide gel and heat. This mediator accelerates the curing process by providing an exothermic reaction that promotes rapid gel formation, thereby reducing curing time while maintaining the fluidity benefits provided by the surfactant
Solution Approach 2:
The invention changes the chemical parameters of the composition by adding specific amounts of silicon-containing compound (0.5-5.0 parts by mass with respect to 100 parts by mass of heat-resistant inorganic particles) and activated carbon (0.5-3.0 parts by mass). These parameter changes enable controlled exothermic reaction that accelerates curing without compromising fluidity
2Productivity
If curing time is reduced for improved productivity, then productivity is improved, but casting mold strength may be insufficient
Solution Approach 1:
The invention creates a composite system combining heat-resistant inorganic particles, waterglass-based binder, silicon-containing compound, and activated carbon. This composite formulation ensures that the exothermic reaction produces both rapid gel formation (for strength) and sufficient heat generation (for complete curing), achieving both quick setting and adequate casting mold strength simultaneously
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 composition achieves excellent fluidity and rapid curability, enhancing productivity by ensuring sufficient heat generation and casting mold strength within a shorter timeframe.
Implementation Method 1
heat generation occurs in a timely manner after the filling, and thus reaction of the respective components progresses
Implementation Method 2
fluidity of respective components is maintained at the timing of filling a cast
Data Source
AI summary
The invention relates to a composition for forming a casting mold, the composition containing heat-resistant inorganic particles; a waterglass-based binder; a surfactant; a silicon-containing compound; activated carbon powder and grain; and water; and the silicon-containing compound contains at least one of metal silicon and ferrosilicon.