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2/9/2009

In-House Blackening

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Birchwood Casey’s new Lumiclad black oxide process is an in-house aluminum blackening method which forms a satin black finish designed to finish small stampings, fasteners, screw machine parts or other low-value parts at low cost.

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Birchwood Casey’s new Lumiclad black oxide process is an in-house aluminum blackening method which forms a satin black finish designed to finish small stampings, fasteners, screw machine parts or other low-value parts at low cost. According to the company, the 1.5- micron finish is tightly adherent to the aluminum substrate with no ruboff and will not shrink hole diameters or add measurable thickness. The company reports that the process is easy and safe to operate, using a simple dip-tank procedure that does not require the use of electrolytic chemicals to form the coating. The line is designed to operate at 70 – 200°F as a self-contained, zero-discharge process. The process takes 30 minutes for most alloys and meshes with existing workflows, eliminating the turnaround times and costs of outside finishing.

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