What Is Galvanising - Spring Plunger

In-Depth Analysis of Galvanising Technology

What Is Galvanising?
Galvanising is a protective metal finishing process that offers outstanding rust prevention by utilizing zinc’s sacrificial anode properties. Mocayo employs an advanced electro-galvanising process in full compliance with ASTM B633 standards, forming a dense zinc layer of 5-25μm on the steel substrate. Laboratory tests show that a standard 15μm zinc coating can endure up to 500 hours in salt spray testing without visible red rust. When the coating remains intact, zinc corrodes at only 1/30th the rate of the underlying steel, delivering excellent electrochemical protection. What is galvanising? A vital surface treatment for spring plunger components. Mocayo applies controlled galvanising methods for exceptional corrosion resistance and precise mechanical function.

Modern galvanising processes can be classified into three main categories:

• Hot-Dip Galvanising: Thicker coating, ideal for large structural parts.

• Electro-Galvanising: High precision, perfect for small and precision components.

• Mechanical Plating: Eliminates hydrogen embrittlement, suitable for high-strength components.

"The protective performance of the galvanised layer depends directly on three key factors," explains Mocayo’s surface treatment engineer. "These include coating thickness, crystal density, and post-treatment processes. By strictly controlling current density and bath composition, we ensure every Spring Plunger receives a uniform and reliable protective coating."

Galvanising Treatment for Spring Plunger

As a precision moving component, the Spring Plunger has very specific surface treatment requirements. Mocayo’s comparative tests demonstrate that optimised galvanised Spring Plunger parts last 3-5 times longer in humid environments compared to untreated products. We apply a proprietary zinc-nickel alloy coating, ensuring the product features:

• Excellent corrosion resistance (800 hours salt spray test)

• Outstanding wear resistance (coefficient of friction 0.1-0.15)

• Stable mechanical properties (hardness HV200-250)

When selecting a Spring Plunger galvanising process, several critical factors must be considered:

• The corrosion level of the working environment

• Movement frequency and load conditions

• Mating compatibility with other components

• Cost-effectiveness balance

Mocayo’s technical team recommends: "For high-frequency automation applications, an 8-12μm galvanised coating combined with special lubrication treatment significantly extends service life."

Thread In Spring Plunger

Spring Plunger

Mocayo’s Zinc Coated Spring Plunger Advantages

Mocayo’s zinc coated Spring Plunger strictly adheres to ISO 4042 standards and is manufactured on fully automated electroplating lines, ensuring consistent product quality. Our specialised technical processes include:

Advanced Manufacturing Process:

• Pre-treatment: 7-step precision cleaning

• Electroplating: constant temperature and current density control

• Post-treatment: trivalent chromium eco-friendly passivation

Rigorous Quality Inspection:

• Coating thickness measurement (X-ray fluorescence method)

• Salt spray testing (ASTM B117 standard)

• Adhesion testing (cross-cut test)

• Dimensional accuracy inspection (CMM measurement)

Product Series Highlights:

• Standard products: diameters from 4mm to 20mm in stock

• Custom services: special coatings and non-standard sizes

• Technical support: professional selection guidance

"Our newly developed chromium-free passivation process fully complies with EU REACH regulations and offers 20% improved corrosion resistance over traditional methods," says Mocayo’s Technical Director.

By choosing Mocayo, you gain:

✓ High-quality products compliant with international standards
✓ Professional technical support
✓ Comprehensive quality assurance system
✓ Flexible customisation options

We are always ready to provide you with the most suitable Spring Plunger solutions. Feel free to contact us for consultation and cooperation.