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This report describes the coolant system that has been developed to solve customer dissatisfaction with coolant systems for machining centers of aluminum processing, which has been growing. The target is to reduce the maintenance cost, to save the customers' workload, and contribute to improving the factory environment. Sumitomo Heavy Industries Finetech Ltd. has achieved a longer product life of the coolant, the elimination of the need to clean the tank and the discharge of cutting chips with smaller moisture content. The development was conducted in cooperation with customers in order to make improvements. And many of the verification tests were performed based on actual operations. As the new system has met all the target values set in the initial stage of the development, it has been highly evaluated by customers.
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