Will Galvanised Steel Rust - Mocayo Indexing Plunger

Corrosion Resistance of Galvanised Steel

Will galvanised steel rust? Thanks to its unique dual protection mechanism, galvanised steel demonstrates excellent corrosion resistance. Mocayo applies a hot-dip galvanising process in strict accordance with ASTM A123 standards, forming a dense zinc-iron alloy layer on the steel surface. One of the key advantages of galvanised steel lies in its sacrificial anode effect — even if minor scratches occur, the zinc layer corrodes preferentially, continuing to protect the underlying steel substrate. Will galvanised steel rust with daily use? Mocayo indexing plungers apply thick zinc layers for superior corrosion protection, reliable positioning, and extended product life.

In practical applications, the protective performance of galvanised steel depends primarily on three critical factors:

• Coating Quality: Mocayo utilizes temperature-controlled continuous hot-dip galvanising to ensure uniform, dense zinc crystallisation.

• Operating Environment: Optimal performance is achieved in pH ranges between 5.5 and 12.

• Mechanical Protection: For components subject to friction, locally thickened coatings are recommended.

For marine or high salt spray environments, we recommend applying an extra-thick coating of 100μm or more to maximise protection.

Zinc Coating Requirements for Indexing Plunger

As precision positioning components, indexing plungers have extremely stringent surface treatment requirements. According to Mocayo’s testing data, zinc-coated indexing plungers, after advanced processing, can maintain ±0.01mm positioning accuracy while achieving service life five times longer than standard products. Our specially developed gradient coating technology ensures that the products feature:

• Excellent corrosion resistance (1000-hour salt spray test)

• Outstanding wear resistance (coefficient of friction: 0.08-0.12)

• Stable mechanical properties (hardness: HV220-280)

Coarse Self-Locking Indexing Plunger

Fine-thread Indexing Plunger

When selecting surface treatments for indexing plungers, key considerations include:

• Corrosion severity of the working environment

• Expected operating frequency

• Positioning accuracy requirements

• Load condition specifications

The Mocayo technical team recommends:

“For high-frequency automated applications, we advise a coating thickness of 15-20μm combined with specialised lubrication processes.”

Advantages of Mocayo Galvanised Indexing Plunger

Mocayo’s galvanised indexing plungers strictly follow ISO 1461 international standards. Our specialised manufacturing solution includes:

Advanced Manufacturing Process:

• Material selection: Premium cold-rolled steel sheets from Baosteel

• Hot-dip galvanising: Constant temperature control at 455°C

• Post-treatment: Special passivation process for enhanced protection

Rigorous Quality Control:

• Coating thickness measurement (magnetic thickness gauge)

• Salt spray testing (ASTM B117 compliant)

• Adhesion testing (impact and bending methods)

• Dimensional accuracy inspection (3D coordinate measuring systems)

Product Series Highlights:

• Standard Sizes: Diameters from 6mm to 30mm, available from stock

• Custom Services: Special coatings, non-standard specifications

• Technical Support: Expert product selection guidance

By choosing Mocayo, you will receive:

✓ Internationally compliant, reliable products
✓ Professional, precise technical support
✓ Comprehensive quality assurance systems
✓ Flexible, customised service solutions

We are ready to provide you with the most suitable galvanised indexing plunger solutions at any time. Please feel free to contact us for further inquiries and cooperation.