How to Keep a Plating Bath from Slowing Down

As published in Products Finishing Magazine, April 2018 issue. Alkaline plating baths form carbonates over time, and these carbonates cause the baths to become less efficient, resulting in slower plating speed. Asterion’s Roger Sowinski outlines three options for removing carbonates. Q. Why is the plating time in my alkaline plating baths increasing? How do I fix this problem? A. When it comes to plating, time is money, and nothing is more frustrating than your plating bath slowing to a crawl. The good news is that you can return the plating speed to its original levels; the … [Read more...]

TECHNIPLATE™ E-NIC 1200 High Speed, High Phosphorous EN Introduced

INDIANAPOLIS, November 29, 2016 – TECHNIPLATE™ E-NIC 1200 high speed, high phosphorous electroless nickel process has been introduced by Asterion, LLC. Providing exceptional corrosion and wear resistance, the process imparts a semi-bright deposit that is RoHS compliant and meets the stringent requirements of the ELV and WEE directives. TECHNIPLATE E-NIC 1200 is production-proven to achieve up to 10% higher throughput versus other conventional electroless nickel processes. The pH self-regulating process affords multiple metal turnovers and may be employed for both rack and barrel … [Read more...]

Alkaline Zinc: Ensuring a Bright Solution without Sacrifice

If I was asked to make a customer wish list, “get my alkaline zinc bath brighter,” would most definitely be near the top of that list. This request would be followed by the comment, “And…while you’re at it, make sure that my bath: …does not sacrifice efficiency and throughput, and; …continues to maintain consistent metal distribution over a range of current densities” Making an alkaline zinc bath brighter seems straight forward enough.  Just add more brightener and you’re all set.  Right? If it were only that simple.  In reality, brightener additions are more often than not … [Read more...]

Functional Zinc Plating

 Electrodeposited zinc is used for coating iron and steel parts when protection from the corrosive effects of the atmosphere is the primary goal.  Zinc however by itself, while offering sacrificial corrosion protection based upon its larger negative electro-potential than iron, is not used without subsequent treatment. Electroplated zinc becomes dull gray after exposure to air, so that bright zinc is give a subsequent post treatment in a conversion coating which most often contains either hexavalent or trivalent chrome.  Non-chrome bearing conversion coatings have also been … [Read more...]

The Basics of Alkaline Cleaning in the Electroplating Industries

The most important phase of metal working, fabricating and finishing is cleaning.  Alkaline cleaning is the mainstay of industrial cleaning and may employ both physical and chemical actions.  Cleaners are many in number and vary in type and formulation.  Alkaline cleaners are specifically formulated (proprietary) chemical blends which consist of alkaline builder salts, surfactants, sequestering agents, emulsifiers and chelators .  Wetting agents, soaps and synthetic detergents, allow oil to be removed by displacing the oil from the surface of the part being cleaned by creating an emulsion win … [Read more...]

Chromate Conversion Coatings

Zinc is typically used for the electrodeposited coating for iron and steel when prevention of atmospheric corrosion is the primary objective.   However without a subsequent treatment, typically chromate, electrodeposited zinc becomes dull and grey and will quickly develop white corrosion products after exposure to air.  Chromate conversion coatings impart both an aesthetically pleasing finish as well as varying degrees of corrosion protection. The use of Chrome VI in the conversion coatings as the passivation agent for zinc deposits are endowed with numerous advantages.  These include: High … [Read more...]

Hard Chrome Plating

The process of hard chrome plating has been used since the early part of the 20th century. It is a process that is used in nearly every aspect of manufacturing where wear resistance and lubricity are critical. Typically coating thickness deposited are between 8 to 250 mm (0.00032”-.0098”) and hardness between 800-1000HV. High hardness and resistance to abrasion are retained unchanged up to 200o C. Early processes were standard chromic acid and sulfate processes. The late 1940’s gave to processes that used anions such as fluoride to improve plating rates and finish quality. Later evolution in … [Read more...]