A core leaching autoclave is a specialized equipment used in the precision casting industry to remove the ceramic core from castings. It utilizes chemical reactions or physical processes under high temperature and pressure to efficiently and thoroughly remove the core material from the casting cavity. Depending on the process design, core leaching autoclaves can be categorized into the following types:

**High-Temperature, High-Pressure Alkaline Chemical Core Removal:** This is the most common core removal method. Place the casting in a sealed autoclave, add some alkaline solution (such as NaOH or KOH), and electrically heats the liquid to a high-temperature, high-pressure state. Under these conditions, the alkaline solution reacts chemically with the silicon-based ceramic core, decomposing it into soluble products, which are then discharged through diffusion and rinsing. This process offers the advantages of thorough core removal and suitability for complex internal cavity structures.

**Electrohydraulic Effect-Assisted Core Removal:** This method introduces a high-voltage pulsed current based on traditional chemical core removal. Utilizing the "electrohydraulic effect," it generates shock waves and cavitation phenomena to physically scour the core, while simultaneously promoting the penetration of corrosive media, significantly increasing the core removal rate. This technology achieves simultaneous chemical corrosion and physical cleaning, making it particularly suitable for castings with slender or curved channels.

High-Pressure Jet Core Removal: Primarily used in the subsequent cleaning stage. After initial core removal, high-pressure alkaline solution or water is used to directly impact the residue through a small-diameter nozzle, removing difficult-to-dissolve "pasty" residue and ensuring a clean inner cavity.

Fully Automated Intelligent Control Core Removal: Modern core removal reactors are generally equipped with PLC control systems (such as Siemens systems), which can preset parameters such as temperature, pressure, and time, achieving fully automated operation and improving operational safety and process consistency. Some high-end equipment also supports remote monitoring and fault diagnosis.