The dry ice cleaning method has been developed rapidly in the world. The cleaning system sprays the dry ice particles from the dry ice cleaner to the working surface to be cleaned through high-pressure air, and sprays them to the surface of the object to be cleaned through a special jet cleaner. By using the momentum change, sublimation, melting and other energy conversion of the solid dry ice particles in high-speed motion, the dirt, oil and residual impurities on the surface of the object to be cleaned can be rapidly frozen, Thus, it will condense, embrittle, be stripped, and be removed with the air flow at the same time. It will not cause any damage to the surface of the object to be cleaned, especially the metal surface, nor affect the smoothness of the metal surface, so as to achieve a fast, efficient, safe and energy-saving cleaning effect.

Dry ice cleaning can be used for steel mills, motors, transformers, molds and other equipment with serious oil pollution.

Dry ice cleaning principle

The dry ice cleaning process uses compressed air as the power to spray dry ice particles to the surface of the cleaned object at supersonic speed, and uses the ultra-low temperature performance of dry ice to achieve the purpose of decontamination.

1. Impact force. The dry ice impacts on the cleaned surface at high speed, and the escape of impact kinetic energy and the extremely rapid heat transfer between the dry ice particles and the cleaned surface cause the carbon dioxide to change from solid to gas in an instant.

2. "Micro explosion". When dry ice particles penetrate into the cracks of dirt, they will vaporize in several thousandths of a second, and their volume will expand nearly 800 times, thus bringing dirt away from the surface of the object.

3. "Cracking". For two different materials with different thermal expansion coefficients, the temperature difference between them will destroy the combination between the two materials. The temperature of dry ice particles is extremely low (- 78.5 "C). The dry ice particles impact the surface of the treated material, causing the dirt to freeze to embrittlement and burst, resulting in" cracking "or thermal shock, and affecting the mechanical properties of adhering dirt.

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Xiamen Hefengli Dry Ice Decontamination Equipment Co., Ltd. (hereinafter referred to as Hefengli Dry Ice), founded in 1999, is a Chinese enterprise specializing in dry ice application, forming a complete industrial structure chain of R&D, manufacturing, sales and after-sales. The company's brand is HORECO2, and Fengli has a doctor-level research and development team. Its main products include dry ice granulator&briquetting machine, dry ice cleaning machine, dry ice automatic production line, dry ice intelligent cleaning, supply of various specifications of dry ice, dry ice cleaning services and leasing, dry ice insulation box, dry ice equipment accessories and related intelligent products; It has arranged 18 dry ice manufacturing plants, provided a complete dry ice distribution service network, and provided customers with a cost-effective use experience.