Zinc Phosphate Pretreatment Coatings and Wastewater
The customer has two facilities; each has a zinc phosphate immersion line for pretreating fasteners with unique corrosion resistance requirements. In addition corrosion resistance, the zinc phosphate crystals provide a surface structure that allows specialty coatings to adhere during the Dip and Spin paint process.
The customer was struggling to produce zinc phosphate coating weights meeting their customers’ requirements. In addition, the zinc tanks generated excessive sludge, consumed unnecessary chemistry and required frequent dump/ recharge. The customer was also having difficulty treating their wastewater and had excessive zinc in their discharge water that was not meeting daily limitations. Their current chemical supplier did not have the technical expertise to solve their problems.
The DuBois Solution
DuBois partnered with the customer to improve quality and restore environmental compliance. Our local technical team and application specialists audited one of their facility’s zinc line and continuous wastewater treatment system. DuBois team identified several chemical, equipment and process improvement opportunities that they agreed to pursue. We then coordinated the zinc pretreatment line start-up with a sampling program that allowed us to evaluate coating weights and optimize wastewater treatment effectiveness. The results met customer quality expectations and environmental compliance. After proving our capabilities in Iowa, the customer converted to the DuBois program at their second location.
Results and Benefits
Trade Expo / 02.24.19
Learn more about Blendco and C.A.R. Products solutions for the car wash industry. Visit our team of experts February 24-26 in Arlington, TX.
Training / 11.03.18
This conference will bring stampers and die shops up to date on new lubricants for stamping and tool and die machining, and help them evaluate new formulations and select the right lubricant for the job. Rick Bulter, DuBois R&D Manager, will be part of the training team at this event sponsored by the MetalForming magazine with support by the Society of Tribologists and Lubrication Engineers.
Recent Events / 08.07.18
Prowash is a key supplier of a comprehensive range of high quality auto wash chemicals and equipment to the Australian car wash industry. Prowash adds value with its position of surrounding customers with all chemical, equipment and technical service needs.
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