What is Galvanised Steel - Zinc Coat Spring Plunger

What is Galvanised Steel? It is a highly effective anti-corrosion material widely applied in various industrial sectors, based on its unique electrochemical protection mechanism. At Mocayo, we utilize hot-dip galvanizing technology compliant with ASTM A123 standards to form a dense zinc-iron alloy layer on the steel surface. Test data demonstrate that a standard 85μm coating can endure over 1200 hours in neutral salt spray testing without red rust, offering more than 10 times the corrosion resistance of ordinary steel. What is galvanised steel? Find out how galvanising improves spring plunger durability, making them ideal for precision applications and long-term use.

In practical applications, the performance of galvanised steel depends on three critical technical parameters:

• Coating Weight: Generally ≥275g/m²

• Alloy Layer Thickness: Recommended at 50-80μm

• Surface Roughness: Ra ≤ 1.6μm

It is important to note that the protective effect of galvanised steel is closely related to the pH value of its working environment. Optimal stability is achieved within the pH 6-12 range.

Spring Plunger with Zinc Coating: Technical Specifications

As precision motion components, Spring Plungers require highly demanding surface treatments. Mocayo’s zinc-coated Spring Plungers offer the following performance advantages:

• Excellent corrosion resistance (1000h salt spray test)

• Superior wear resistance (coefficient of friction 0.08-0.12)

• Stable mechanical strength (hardness HV220-250)

Key processing control points include:

• Pre-treatment: Seven-stage precision cleaning (degreasing → pickling → activation)

• Coating Control: Thickness 12±2μm (measured by X-ray fluorescence)

• Post-treatment: Trivalent chromium passivation (RoHS compliant)

Mocayo Zinc Coat Spring Plunger Solutions

Mocayo’s Spring Plunger production strictly follows ISO 4042 international standards, utilizing fully automated electroplating lines to ensure consistent product quality. Our technical solution includes:

Advanced Manufacturing System:

• Base Material: Premium Baosteel cold-rolled steel strip (SPCC)

• Plating Process: Constant current density control (2-4A/dm²)

• Quality Monitoring: In-line coating thickness measurement

Thread In Spring Plunger

Spring Plunger

Lateral Spring Plunger

Rigorous Quality Control:

• Salt Spray Test: Per ASTM B117 standard (72h no white rust)

• Adhesion Test: Grade 1 (Cross-cut test)

• Durability Test: 50,000 reciprocating cycles

• Dimensional Inspection: CMM measurement (±0.01mm)

Product Series Advantages:

• Standard Sizes: Diameter 4-20mm (in stock)

• Customization: Special coatings and non-standard dimensions available

• Technical Support: Free process consulting

By choosing Mocayo, you will benefit from:
✓ International-standard reliable products
✓ Professional technical support team
✓ Complete inspection reports
✓ Flexible customized services

We are always ready to provide you with professional technical solutions. Please feel free to contact us online or schedule a factory visit for an on-site consultation.