Electroless nickel (EN) plating is an alloy deposit of nickel and phosphorous. This process provides a uniform plating deposit over complex surface geometries such as threads, blind holes, grooves, slots and the inner diameter of tubing. TPC offers low phosphorus, mid phosphorous and high phosphorus EN plating options with each option offering unique deposit properties. Low phosphorus EN (<5% by weight) yields a hard deposit as plated with excellent wear resistance and good corrosion resistance in alkaline environments. Mid phosphorous EN (5-10% by weight) yields a deposit with high hardness and wear resistance at competitive costs. Deposit hardness of 66 HRc can be obtained with the post EN plating aging process. High phosphorous EN (>10% by weight) yields a deposit that is non-magnetic and highly corrosion resistant.
Overall features of EN deposits include: wear resistance, excellent corrosion resistance, high hardness, low friction, availability of co-deposits, deposit brightness, deposit uniformity, chemical resistance, solderability, weldability, magnetic and non-magnetic properties.
EN plated products can be aged in an inert nitrogen atmosphere to improve deposit adhesion and wear resistance. The process takes place in an electric furnace under a blanket of nitrogen to prevent discoloration of the EN deposit due to oxidation. The EN deposit can achieve a hardness of greater than 66 HRc when subjected to this aging process.
Zinc electroplating is the most prevalent, least expensive electroplated deposits on ferrous substrates to achieve corrosion protection. This process involves placing a clean ferrous component in an aqueous zinc solution and utilizing electric current to deposit zinc metal on the substrate. The zinc electroplated deposit protects the substrate by sacrificing itself and thus corrodes before the substrate material. Post treatments of trivalent chrome and/or other sealants will provide color and enhanced corrosion protection. The unique combination of corrosion protection, attractive appearance, even plating distribution, ductility and relatively low cost make zinc electroplating an obvious choice for the protection of a wide variety of metal stampings, fasteners and machined components. It is also an excellent choice for an undercoat layer prior to painting or powder coating.
An electrostatically applied coating that is cured under heat to provide a finish that has superior durability when compared to conventional liquid paint and e-coating. Powder coating provides an aesthetic value with impressive corrosion protection. TPC offers epoxy, polyester and hybrid powders in a vast array of colors, glosses, and textures.
TPC’s powder coating process includes a seven-stage pretreatment system, utilizing a zinc phosphate conversion coating, a non-chrome sealer and a final D.I. rinse. TPC has two fully automatic paint booths, along with a batch paint booth and a batch cure oven. Our process can accommodate parts up to 10′ in length.
Custom masking solutions is another area of expertise provided by TPC. Typical masking solutions can create a sharp paint burr between paint an non-painted surfaces. At Tawas, we specialize in providing our customers with masking solutions that provide a smooth transition between painted and non-painted surfaces. This smooth transition provides for quicker part assembly and increased operator safety.
From basic masking needs to complex tight tolerance requirements, let our extensive masking experience provide you with the masking solution you and your customers expect.