① In the electrolyte without additives, as the cathode current density increases, the coating will crystallize and become rough;

② When the cathode is not moving or stirring, excessive cathode current density will make the coating dark and rough;

③ Depending on the content of zinc ions, too high a cathode current density will cause local burning of the parts.

Solution: Depending on the zinc ion content in the electrolyte, we can control the cathode current density within the range of 1~2.5A/dm².

Answers

• 
  Why are seamless steel pipes stronger? 31/10/2025 14:08:30
• 
  Is stainless steel wire better at preventing rust than galvanized steel wire? 31/10/2025 07:36:00
• 
  How to distinguish between hot-dip galvanizing and cold-dip galvanizing? 28/10/2025 14:16:19
• 
  What are the production processes and differences between welded steel pipes and spiral steel pipes? 27/10/2025 16:41:23
• 
  What are the characteristics of double-sided submerged arc spiral steel pipe? 27/10/2025 08:16:52