![]() 304 is a basic type of stainless steel and one of the simplest to polish. The hardness of the new layer can disrupt the polishing process if operators aren’t moving fast enough.ĭifferent grades of stainless steel can also simplify or increase the complexity of the polishing process. While abrasive polishing cuts through that layer, it is quickly replaced by a new layer of oxidized steel. The top layer of stainless steel oxidizes to keep corrosion and rust at bay. The passivity properties of stainless steel also require fast polishing speeds. Expert metal polishing operators have processes in place to move quickly from step to step-or from grit to grit-without overworking the metal. This means polishing has to be fast and precise in order to complete the job before the metal’s condition changes and the abrasive agent no longer becomes appropriate. Stainless steel develops an increased hardness the longer stress is applied to the surface-this is known as work hardening. This challenge is due in large part to two of the predominant characteristics of the metal: Stainless steel is an ideal metal for a broad range of products and components, but it can be a difficult material to polish. Stainless Steel Characteristics and Properties to Consider 8 finish-one of the highest finishes that provides a mirror-like smoothness-requires abrasive alumina powder. Operators can use abrasives ranging in grit strength from 50-3,000 to gradually increase the smoothness of the finish without damaging the product. ![]() The requested finishing standard impacts the number of stages involved in the polishing process. Many of these stages involve using mechanical abrasive media-such as Alumina, Zirconia and Ceramics in the process of surface conditioning. The stainless steel polishing process contains between three and seven distinct stages to reach an ideal finish.
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