Old Sand Cooling Equipment
Old sand cooling equipment is an important process in the foundry industry. It is used to remove excess heat from the hot sand and to return the sand to its as-cast temperature. This process is implemented in many different ways, depending on the size and type of sand being cooled and the type of production process. Old sand cooling equipment can be found in many forms: water, air or electric coolers, chillers, or electric-hydraulic systems.
When selecting the appropriate old sand cooling equipment for any project, it is important to consider several factors, including the working environment, the amount of sand being cooled, the types of sand being cooled, the size of the sand molds, the number of casting cycles and the size of the production line, among other things.
Old sand cooling equipment typically utilizes either air or liquid cooling technologies, depending on the specific application and materials being used. Air cooling systems are the most common choice and often the most economical approach. In an air cooling system, cool air is blown into the sand through a sidewall of the booth or by a fan or blower located outside of the booth. This cool air removes the excess heat from the sand, allowing it to cool down further and quickly.
Water cooling, also known as closed-cycle cooling, is an alternative solution for removing excess heat from the sand. In this method, cold water is either directly introduced into the sand or cooled by a chill chamber and then circulated through the sand. The cooling process is often used in conjunction with forced air cooling for faster cooling of the sand.
Electric coolers, chillers and electric-hydraulic systems have all been utilized for old sand cooling applications. In an electric cooler system, electric resistance elements are used to cool the sand and circulate the cooled sand through a water-to-sand chamber. Chillers accomplish a similar purpose as electric coolers, but they also use electrical-hydraulics to introduce cold water to the sand.
Electric-hydraulic systems, also known as cooling cells, are basically a hybrid between an electric cooler and a chiller. In this system, electric resistance elements heat up the sand and then cold water is circulated through a coiled heat exchanger to remove the heat from the sand.
Old sand cooling equipment is an essential part of many foundry processes and can be tailored to each specific application to achieve a high-quality product with a faster-than-usual cooling rate. Selecting the correct equipment for the job is critical for optimal results.
