Zinc alloy die-casting offers excellent electroplating and coating performance, ideal for electronic components. However, issues arising during diecasting mold design, mold manufacturing, pre-treatment, or plating can lead to various defects.

At Precisioner, with 16 years of expertise in diecasting mold design and diecasting mold manufacturing, we provide actionable solutions to common diecasting problems—especially for zinc diecasting and aluminum diecasting projects.

1.Blistering

Casting Defects: Caused by impurities (Pb, Cd), porosity.
● Optimize diecasting mold design; improve melting.
● Pre-Treatment: Due to part oxidation.
● Use anti-rust fluid; reduce storage time. Plating Defects: Poor layer adhesion.
● Increase copper thickness; filter plating solution.on.

Blistering Diagram

2.Pitting

From solvent, splash, H 2 bubbles, or gas in plating.
● Upgrade degreasing; optimize agitation.

Pitting Diagram

3.Burning

Brown marks from high current or contaminated solution.

● Adjust current; replace solution.

Burning Diagram

4.Nodules

Grainy surface from particles or poor cleaning.
● Filter solution; clean parts thoroughly.

5.Peeling

Flaking from contamination or current breaks.
● Purify solution; stabilize current.

Peeling Diagram

Systematic Defect Prevention for Diecasting

Avoiding defects in zinc diecasting and aluminum diecasting requires integrated control across the entire process:

1.Precision diecasting mold design and diecasting mold manufacturing
2.Consistent pre-treatment
3.Controlled plating parameters

Precisioner, with 16 years of expertise in diecasting mold design and diecasting mold manufacturing, supporting clients with defect analysis and process optimization for high-quality surface finishing.

Contact Precisioner for professional zinc alloy diecasting and defect analysis:
info@precisioner.com
www.precisioner.com