VDM Metals Adopts Henkel’s Nitric Acid-Free Pickling Process




VDM Metals Group, a German manufacturer of nickel alloys and special stainless steels, has adopted Henkel´s Cleanox acid-free Bonderite C-CP pickling process for dedicated wire products. The Bonderite C-CP product range answers market requirements within the metals industry to significantly increase the sustainability value of their production processes.

The Cleanox technology has already been in use for decades in multiple industries globally, including wires, tubes, coils, bars, and components. It is suitable for all stainless steel grades, and can be used in multiple applications, including immersion, spray, continuous line, or batch solution processes. VDM Metals is using Cleanox technology to pickle rolled wire of high-alloyed materials in order to ensure the compliance with nitrogen oxide (NO) limits.

High-alloyed nickel chromium alloys are commonly used in multiple industries, including the automotive, petrochemical, aviation, power generation & electrical, chemical and appliances sectors. But there are challenges around common mixed acid pickling systems, due to the use of nitric acid. These cleaning techniques typically result in vast volumes of nitrate ions being discharged, during the intermediate and final rinsing stages. Nitrate and nitrite pollution is subject to legislative regulation and needs to be complied with via waste water treatment.

Henkel began offering its range of Bonderite C-CP technologies in the 1990s, to address the growing market demand for nitric acid-free pickling technologies for stainless steel. Since the initial introduction, legislation governing this space has tightened in the EU. VDM Metals is one of the first manufacturers of high-alloyed non-iron metals to adopt the process in their production.

Source: Henkel AG & Co. KGaA

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