Dry ice cleaning technology offers an efficient and environmentally friendly cleaning solution for the casting industry in the Sihanoukville Special Economic Zone of Cambodia. The technology operates by using dry ice particles at -78.5°C, which are propelled by compressed air at high speed onto surfaces. Through a combination of cryogenic embrittlement, kinetic impact, and instantaneous sublimation (with volume expansion of approximately 800 times), it generates a powerful stripping force that thoroughly removes residual contaminants from mold crevices without damaging the equipment.

Key advantages of the technology include:

• Efficiency and Speed: Cleaning time is reduced from dozens of hours required by traditional methods to just a few minutes, significantly boosting production efficiency.

• Cost-Effectiveness: It can lower long-term maintenance costs by over 30%, extend mold service life by 20–30%, and reduce downtime.

• Non-Destructive Cleaning: As a non-abrasive method, it prevents wear and tear on precision molds, ensuring consistent product quality.

• Eco-Friendliness and Safety: No chemical cleaning agents are needed, eliminating pollution risks. The dry ice is sourced from recycled industrial CO₂, supporting carbon recycling.

• No Secondary Treatment Required: Dry ice sublimates completely without residue, streamlining the process and reducing waste disposal pressure.

This technology aligns with the zone’s goals of environmental sustainability and operational efficiency, providing strong support for local casting enterprises to enhance their international competitiveness.