1/28/2018

BC40 Finishing System Eliminates Environmental Concerns

Originally titled 'Finishing System Eliminates Environmental Concerns'
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Birchwood Technologies’ BC40 Presto Black finishing system has an ion exchange system to purify and recycle rinse waters, makes a closed-loop, zero-discharge operation and eliminates environmental concerns.

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Birchwood Technologies’ BC40 Presto Black finishing system can perform black oxide finishing in-house. The seven-tank process line, with 20-minute room temperature blackening capabilities, comes with tank system, heaters, plumbing connections and tank lids. It also has an ion exchange system to purify and recycle rinse waters, makes a closed-loop, zero-discharge operation and eliminates environmental concerns, the company says.

The system is preengineered to set up quickly and operate safely. It utilizes seven individual tanks, each measuring 16 × 24 × 24” deep (ID), and occupies a footprint of 3 × 15 ft. According to the company, the tanks are rugged and virtually unbreakable, manufactured of heavy weight, high-density polypropylene and polyethylene.

The non-dimensional system has a uniform 0.000030” (1-µ) thickness. The porous crystalline structure of the black finish makes it an absorbent base for a rust preventive top coat. Once sealed, the Presto Black finish resists up to 1,200 hours humidity without chipping or peeling.

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