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Why Is E-Coating Recommended for Outdoor Metal Furniture Frames

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Why Is E-Coating Recommended for Outdoor Metal Furniture Frames

Why Is E-Coating Recommended for Outdoor Metal Furniture Frames?

Why Is E-Coating Recommended for Outdoor Metal Furniture Frames
Outdoor metal frames face continuous exposure to moisture, UV, and, in many regions, salt-laden air. Corrosion typically initiates at weld seams, joints, edges, and enclosed geometries such as tube interiors. E-coating (electrophoretic deposition) is widely used as an anti-corrosion basecoat because it provides uniform film build and strong coverage on complex structures. In outdoor furniture programs, e-coating is often selected to improve corrosion resistance consistency across batches and to reduce early rust at high-risk areas.

Process Overview

This article summarizes the e-coating workflow used as a controlled process for outdoor metal frames. The step names and key control windows below are extracted from our internal process control. Actual settings may be adjusted based on chemistry supplier recommendations, part geometry, and customer specifications.

E-Coating Workflow and Key Control Windows (Reference)

E-Coating Workflow and Key Control Windows
E-Coating Workflow and Key Control Windows

Quality Checkpoints We Recommend for Outdoor Programs

Typical inspection items in our control sheet include:

  • Visual: no dirt, blistering, scratches, watermarks, or bare spots.
  • Color difference: total ΔE ≤ 1.0 (batch consistency reference).
  • Adhesion: Grade 0 (no peeling) via cross-hatch + tape method.
  • Film thickness: 20–25 μm (reference window; confirm per specification).

Design Notes for E-Coated Outdoor Frames (DFM)

  • Drainage and vent holes: enable complete chemical exchange and reduce trapped solution in tubes.
  • Avoid blind cavities where possible; if unavoidable, design venting to minimize carryover.
  • Weld finishing: stable weld beads reduce sharp edges and help coating continuity.
  • Handling points: define non-cosmetic contact points for hanging/fixtures to avoid visible marks.
Metal frame furniture manufacturing example showing a bed frame steel subassembly produced with automated forming and robotic welding

About Unispace

Huzhou Unispace Furniture Co., Ltd. manufactures metal-frame furniture and provides OEM/ODM support. We apply standardized process control for cutting, forming, robotic welding, surface preparation, and finishing. For outdoor programs, finishing selection (powder coating vs. e-coating systems) is aligned with the target environment and customer specifications.

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