Phosphate Coating Heaters

Phosphate Tank Immersion Heater

Phosphate coatings are applied to iron or steel parts to increase corrosion resistance. Heating phosphates is difficult, but it's a prerequisite to getting the future coatings to apply.  The end result is a superior metal finish.

We offer 316 stainless steel or Titanium sheath or PTFE coated heaters. If you choose SS, upgrade to electro-polish on the sheath. The Teflon or PTFE immersion heaters are usually preferred to heat phosphate plating tanks.

By de-rating heaters, the wattage is reduced to 20 WSI, rather than the normal heat output of around 35-40 watts per square inch. You want to slow the crystalline buildup process on the heaters. About every 2 weeks, the heaters are removed and cleaned from the tank. The added 6” welded nipple makes it easy to remove and clean on the phosphate heaters for zinc and magnesium.

Because of the high solution evaporation rate, we recommend L-Shaped tank heaters or Bottom heaters with a heat shield, especially for polypro tanks. Learn more about various phosphate coating processes.

All phoshorous coating systems should have a liquid level safety to shut the heaters off in the event of evaporation, tank leakage, or chemical hose failure.

Phosphate Coating Equipment

Immersion Heaters for Phosphorus Solutions

PTFE water heaters

Bottom
Immersion Heater

Phosphate coating equipment a layer of nickel-phosphorus or nickel-boron alloy on a workpiece. The process’ reducing agent, (NaPO2H2•H2O) reacts with metal ions to deposit metal. Tailoring the percentage of phosphorus, (generally 2-14) determines metallurgical properties. Hard chrome plating reduces friction, enhances abrasion and wear resistance, minimizes galling and seizing and imparts oxidation resistance. It is also very hard: 65 to 69 HRC. Cadmium plating provides exceptional protection for ships and aircraft, from atmospheric corrosion. The coating thickness usually varies from 15 to 25 jam. Complex cadmium salts are used to coat parts with complex geometries. Copper-nickel-chrome plating is an elite process that ensures the longest service life for chromed parts. Parts are first plated with copper, a non-ferrous material that fills minor imperfections. Nickel, then chrome plating follow. Tin plating protects both ferrous and nonferrous substrates. In the electronics industry, it preserves solderability by preventing base metal oxidation. Nickel plating involves a combination of heat treating, cleaning, masking, pickling, and etching before workpieces are submerged in an electrolyte solution, becoming the cathode. A nickel anode is dissolved in the electrolyte as nickel ions; these ions deposit on the cathode.

Temperature Controllers & Sensors for Phosphorus Solutions

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