It seems that more and more die casters are performing secondary operations like machining, vibratory finishing and sub assembly of cast components. These operations add value to casted parts and profits to casting companies. Machining operations are many times the first step in the secondary process, and the die caster has many decisions to make regarding the types of machines needed, the types of tooling required and the coolant necessary to maximize the quality of each part produced. Manufacturing engineers are usually well-versed regarding the machine and type of tooling needed, but in many cases the coolant aspect of the operation is the least understood and the least researched. Coolant is usually purchased based on cost-per-gallon, past experience or a recommendation from a tooling or machine supplier. The purpose of this article is to provide some general information on the various types of coolants and the best ways to maximize their performance in the sump.
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