By Charles Baldwin, Holger Evele, Renee Pershinsky
Advances in Porcelain tooth know-how: Ceramic Transactions quantity 211 presents a compilation of PEI Technical discussion board complaints overlaying the newest clinical and technological development in porcelain the teeth know-how. Logically equipped, conscientiously chosen articles hide issues starting from potency and Dense part Pumping of Porcelain the teeth Powder to electronic Ceramic Printing and uncooked fabrics and effort: Their impression on Enamels industry. Advances in Porcelain teeth know-how: Ceramic Transactions quantity 211 is the one-stop source for figuring out an important matters in porcelain teeth know-how.
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Extra resources for Advances in Porcelain Enamel Technology: Ceramic Transactions Volume 211 (Ceramic Transactions Series)
What is porcelain enamel reclaim? The process of recycling enamel slip or powder from coating operations to beneficially apply to surfaces. What are the benefits? $ Reduce Coating Material Cost $ Less Solid Waste Disposal Cost $ Reduced Water Treatment Cost $ Less Energy & Labor to Prepare the Coating What are the disadvantages? $ Requires More Labor and Energy $ Additional Equipment is Needed $ The Plant Environment Must Be Controlled $ An Additional Coating Process is Needed $ Rejects May Increase, Resulting in Increased Cost, Scrap and Reduced Production Reclaim Process Processes Mill Slip: Reclaim Pit Wash Down Pre Mill Slip: Less Wash Down Screen + Magnetic Separate Pump to Storage Wash Down Tanks, Mills Floor, Screens and Lab: Pit Spray 30-60% Transfer Efficiency: Reclaim 85% Flow Coat Wet or Dip 90-100% Transfer Efficiency: Reclaim 95% Powder Frit Coat 40% Transfer Efficiency Reclaim 95% Brush, Bead and Drain, Blow-Off: Reclaim 41 Porcelain Enamel Reclaim Technology Review Tool Washer: Reclaim Wet Powder Hanger Cleaner: Reclaim Dry or Wet Dust Collector: Reclaim Wet Spray Washer: Pit/Water Treatment Wash Down: Pit Collection Baffles Drop 85-90% of Overspray 42 ■ Advances in Porcelain Enamel Technology Porcelain Enamel Reclaim Technology Review Overspray Reclaim Wet Process Collection: Dust Collector: 10-15% to Collector Tool Washer: Centrifugal Separate and Settle Powder Hanger Cleaner: Pump to Booth Screen or Collect and Mix with Wet Enamel DUST COLLECTOR RECLAIM Advances in Porcelain Enamel Technology · 43 Porcelain Enamel Reclaim Technology Review Hanger Cleaner Reclaim Process Pit Collection Mill Room or Process Area: Frit Settles Mechanical Agitate Air Agitate with Compressed Air or Blower Reclaim Applications Booth Over Sprays: Reuse on High Appearance Surfaces Dust Collection Materials: Mix with Wet Ground Coat Backside of Parts Tool Cleaner Materials: Wet Ground Coat on Small Parts Pit Materials: Backside Tubs Water Tank Small Low Appearance Parts Conclusions ♦ With raw materials and energy cost, a successful reclaim process must be established and maintained.
The level of cobalt oxide and Nickel oxide was varied in each frit. The bond levels were then compared. The water heater groundcoat frit was milled in a typical wet mill addition. Firing temperature was 1580 degrees F. Steel surface was a light coil blast. Cobalt and Nickel levels were varied as in the chart below: Subsequent bond ratings were checked, and charted in graph form: 17 Comparison of Cobalt and Nickel in Frit Formulations A smaller amount of Cobalt Oxide was needed to generate the same bond level than a larger amount of Nickel Oxide.
First, is there a ratio of how much Cobalt to add versus how much Nickel to add to a frit to get the same bond results? And second, given the current price levels of these two materials, which is more cost effective? We chose two types of frit formulations for our experiment. A water heater (wet spray applied) groundcoat frit, and an electrostatic powder groundcoat frit. The level of cobalt oxide and Nickel oxide was varied in each frit. The bond levels were then compared. The water heater groundcoat frit was milled in a typical wet mill addition.
Advances in Porcelain Enamel Technology: Ceramic Transactions Volume 211 (Ceramic Transactions Series) by Charles Baldwin, Holger Evele, Renee Pershinsky