by Alan Zhou | Nov 20, 2025 | Surface Treatments
Brushed Finish What is Brushed Finish? A brushed finish is a surface treatment that creates a fine, consistent, unidirectional grain pattern on metal using abrasive belts or brushes. This finish gives the surface a satin-like appearance—smooth but not...
by Alan Zhou | Nov 19, 2025 | Surface Treatments
SPI Finish What is SPI Finish? SPI Finish refers to the surface finish standards defined by the Society of the Plastics Industry (SPI)—now known as PLASTICS—for injection mold surfaces. These standards classify mold cavity finishes into different grades...
by Alan Zhou | Nov 19, 2025 | Surface Treatments
Passivation What is Passivation? Passivation is a chemical treatment—usually using a nitric acid or citric acid solution—applied to stainless steel and other corrosion-resistant alloys to remove free iron and contaminants from the surface. This process...
by Alan Zhou | Nov 19, 2025 | Surface Treatments
Electroless Plating What is Electroless Plating? Electroless plating is a chemical deposition process that deposits a metal coating—most commonly nickel-phosphorus (Ni-P) or nickel-boron (Ni-B)—onto a part’s surface without using electricity. Instead,...
by Alan Zhou | Nov 19, 2025 | Surface Treatments
Teflon Coating What’s Teflon Coating ? Teflon coating is a non-stick, low-friction, and chemically resistant surface treatment made from PTFE or related fluoropolymers. When applied to metal or plastic parts, Teflon creates a durable, smooth layer...
by Alan Zhou | Nov 19, 2025 | Surface Treatments
Tumbling Finish What’s Tumbling Finish? Tumbling finish is a mechanical surface finishing process where parts are placed into a rotating or vibrating drum filled with abrasive media, water, and compounds. As the drum moves, friction between the...
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