The benefits of using dry ice blasting as a cleaning method in the foundry

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By: Sanjou Gokhool
 

Dry ice blasting also known as CO2 blasting is used in the foundry for cleaning purposes. Using this cleaning method in the foundry can provide excellent benefits as the molds and castings can be very tough to clean at times. As such, the core boxes as well as the core machines in a foundry have to be cleaned properly for re-use. On the other hand, plastic and rubber molds found in the foundry can be really difficult to clean when they are covered with mold release and grease.

Cleaning methods used in the foundry long ago included hand scraping and scrubbing. Other methods were the use of chemicals as well as sand blasting. These methods have undoubtedly helped to clean important components of the foundry long ago, but they also represented several drawbacks. First of all, the items that have to be cleaned had to be removed and this took a lot of time. The process of assembling and dissembling molds effectively, cost a lot of time and represented substantial loss in terms of money for the foundry.

Besides, the use of sand blasting in the foundry gradually wore out mold surfaces causing for additional money to be spent on other molds. Also, with sand blasting, particles of sand got stuck in cavities and became difficult to remove. Additionally, the use of chemicals in the foundry in the past created safety risks for foundry workers. Chemicals also proved to be expensive and the foundry had to bear an extra cost for its dumping. Fortunately, with the use of dry ice blasting in the foundry, the drawbacks that came with traditional cleaning methods can now be addressed.

The benefits that can be obtained due to dry ice blasting are priceless. Thus, they can be considered as the perfect solution for any foundry. Firstly, the number of working hours for foundry workers is reduced. With dry ice blasting, the number of cleaning hours is as well reduced, helping the foundry worker to stay fitter for everyday’s tasks. Also, the cleaning is much faster and rules out the assembly and disassembly of molds as in traditional methods. In addition to, the foundry worker may not have to clean equipments by scrubbing or scouring. The loss of time in moving equipments to and from the cleaning area is eliminated allowing the foundry to benefit from production gains.

More to the point, thanks to dry ice blasting, the damage incurred to expensive equipments in the foundry may be decreased. In contrast with sand blasting, CO2 blasting is gas blasting which is done at high pressure. As a matter of fact, the cleaning process can be carried out regularly in the foundry, enabling equipments to stay cleaner. With the effect of the gas, no cleaning material can get trapped in the equipments. Further, the use of chemicals in the foundry can be ruled out.

With this, foundry workers may no longer encounter health risks and there is also no need to pay extra costs for disposal of the cleaning material.

Article Source: http://www.articlecell.com

Sanjou is the writer at FoundryTechnology.co.uk. A supplier of new and second hand foundry equipment and engineering services.

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