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Buffing & Grinding
Buffing is usually a final process using abrasives or abrasive compounds that adhere loosely to a flexible backing, such as a cloth wheel. Buffing is used to generate extremely fine surfaces that match those associated with honing and lapping. A buffed surface is typically smooth, highly reflective and mirror-like.
However, at Delstar, buffing is never used as a final finish where a high purity, electropolished surface is needed. We will always use electropolishing as the final surface treatment when buffing is used unless otherwise required by the customer. When high purity, non-contaminating, non-particulating surfaces are needed, Delstar adheres to the internationally recognized ASME BPE Standard for Biopharmaceutical Equipment. We are committed to meeting or exceeding the ASME BPE Standard.
Grinding is typically considered to be a machining or machining-like operation, and is performed to remove substantial amounts of metal. An example would be the removal of a mill finish from plate. Grinding is accomplished by using abrasives firmly adhering to a rigid backing such as would be used with a disk grinder.
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