Aluminum Finishing Equipment from Sanford Processing Corporation |
Aluminum finishing begins with the Sanford Process™ and equipment from the Sanford Processing Corporation. It is by no accident that the finest aluminum finishing uses the Sanford Process. Aluminum finishing benefits using the Sanford Process™ include the capability of hard anodizing all aluminum alloys, higher abrasion resistance, superior coating hardness and uniformity, higher thermal conductivity and corrosion resistance, and the ability to dye with bright vibrant colors.The Sanford Process™ is the leading technology in the global hard anodizing market. What is hard anodizing for aluminum finishing? Developed more than forty years ago hard anodizing is an electrochemical process. It involves placing an aluminum part into an electrolytic bath and applying electrical current through the bath. This process forms an oxide coating (sapphire-hard) on the aluminum part. This oxide coating can be harder than casehardened steel and provide excellent abrasion resistance; it is protective to the aluminum part and can be very durable. However, a number of factors can affect the quality, durability and density of the coating. This electrochemical process generally creates polarization of the cathode and anode in the electro-chemical process. This normally generates large amounts of oxygen at the anode and hydrogen at the cathode. This polarization fills the pores of the oxide coating and builds resistance to the electrical current. As a result, progressively more voltage has to be applied in order to maintain adequate current densities. These high voltages generate dangerously high temperatures and the potential for catastrophic dissolution of parts being hard anodized. But the Sanford Process™ solves this electrochemical problem with its unique additive "Sanfran" and its unique applications of power to the aluminum parts, permitting the Sanford Process™ to be the "Finest Hard Anodize Process in the World." |
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