Is your dip tank designed for the chemistry’s PH?

When designing a dip tank for a paint finishing system there are many specifications required; such as the type of conveyor, floor space, part size, production rate, dwell time, chemistry temperature, chemistry PH, etc…  The topic for this discussion is the material chosen to fabricate the tank.  In general, most tanks are fabricated with 304 stainless steel for corrosion resistance and strength characteristics; to hold weight of the chemistry, to support an overhead conveyor and/or housing, and to remain functional if a part would happen to fall off the conveyor.

In general, when the chemistry is a PH of 3 or less, 316L (low carbon) stainless steel and 316L welding wire must be used, otherwise leaks will occur.  It is always best to consult with the chemical supplier for their recommendations.  The fabrication process must include dye penetrant testing for all welds.  At HERR we also include a full tank water test to check for leaks.  We have many years of experience fabricating custom tanks for pretreatment, pickling, dipping and electrocoating systems.  The tank pictured measures 8’w x 8’h x 48’l and fabricated with ¼” 316L stainless steel.

HERR Industrial, Inc. is a design-build manufacturer, of industrial paint finishing systems and equipment. Our systems are customized to meet the specific requirements of your product, production rate and process.  For your next dip tank project, contact HERR Industrial for custom design, fabrication and installation.

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