· Product Overview

· Core Specifications

• Material: 304 Stainless SteelOffers excellent corrosion resistance (suitable for dry/mild-moisture environments) and balanced tensile strength for small-load compression tasks.
• Manufacturing Standard: ISO 9001-Certified Spring Fabrication Process
  • Key Processes: Cold coil winding (for uniform coil geometry), heat tempering (stabilizes elastic force and fatigue resistance), and surface passivation (enhances rust protection).
  • Tolerances: Wire diameter ±0.03mm, free length ±0.5mm, compression load ±5% (at specified deflection).
  • Performance: Max compression ratio (safe deflection): 30% of free length; reusable cycle ≥10,000 times (without force degradation).

· Application Scenarios

• Electronic Devices: Supporting PCBs, cushioning small sensor components, or maintaining tension in micro-switch mechanisms.
• Medical Instruments: Stabilizing delicate internal parts in diagnostic tools, sample testers, or portable monitoring devices.
• Small Industrial Equipment: Cushioning valve mechanisms, aligning micro-gear components, or absorbing vibration in compact machinery.
• Automotive Sensors: Maintaining contact pressure in small engine sensors or interior electronic modules.
• DIY & Hobby Projects: Building micro-robots, model vehicle suspensions, or custom small-scale mechanical devices.

· Production Process Introduction

1. Raw Material Preparation: Source 304 stainless steel wire with consistent fine diameter (matched to the spring’s compact design).
2. Cold Coil Winding: Use automated micro-spring winding machines to form uniform, tightly spaced coils to the specified free length.
3. Heat Tempering: Temper the springs in a controlled low-heat oven to set elastic tension and enhance resistance to permanent deformation.
4. Surface Passivation: Apply a chemical treatment to the finished springs to boost stainless steel’s natural corrosion resistance.
5. Quality Inspection: Test compression load (via micro-force dynamometers), verify dimensional accuracy, and check coil uniformity to meet spec requirements.

· Packaging and Shipping Methods

• Packaging: Individual springs are sealed in anti-scratch, static-dissipative plastic bags (to protect fine coil surfaces); bulk orders are packed in foam-lined partitioned boxes (to prevent coil tangling or deformation during transit).
• Shipping: Flexible logistics options:
  • Express Delivery (DHL/FedEx/UPS: 3–5 business days)
  • Air Freight (7–10 business days)
  • Sea Freight (20–30 business days)All shipments include full tracking and damage insurance.

· Process

· Frequently Asked Questions (FAQ)

• MOQ (Minimum Order Quantity): 500 pieces per spring specification; small sample packs (20–50 pieces) are available for performance testing.
• Lead Time: Standard lead time is 7–10 working days after order confirmation; expedited production (5–7 working days) is available for urgent orders (additional fees apply).
• Customization Capability: Full customization is supported—we can adjust wire diameter, free length, coil count, and compression load based on your technical drawings. Our engineering team will validate design feasibility for micro-spring production.