Solving Problems Correctly Is Important
Not Having Problems Is Better
“Right!…So How Do I Do That?”
Process Control
GOAL OF CYLINDER MAKING
• Correctly engraved cylinders going to the press....WITH NO REMAKES!
–Engravable copper is essential
• Fine consistent grain structure for uniform cell geometry
• Cohesive deposit that won’t displace copper or allow collapsed cell walls
• Ductility that allows for acceptable diamond life
HOW DOES THAT HAPPEN?
Following Directions is Good
CuSO4(Copper Sulfate) concentration 210-230 g/l
H2SO4(Sulfuric Acid) concentration 55-65 g/l
Temperature 28°-32°C
Current Density 20-35 amps/dm2
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