重要ポイント
- A custom metal enclosure protects internal components from dust, water, impact, and EMI — 材料 selection and IP/NEMA rating are the two most critical 設計 decisions.
- 板金加工 (レーザー切断 + CNC 曲げ加工 + 溶接) is the most cost-effective method for enclosure production at 1-500 units.
- DFM rules for enclosures: maintain ≥1.5× 材料 厚さ for hole-to-edge distance, add bend reliefs, and 設計 for assembly direction.
- BravoFabs produces 生産ロット間でCpkを追跡し、セットアップシートを維持するため、2回目の注文も1回目と一致します。 in Dongguan, China — from prototype to production with full finishing (粉体塗装, 陽極酸化, silkscreen).
材料 Selection for カスタムエンクロージャ
| 材料 | 厚さ | 最適用途 | 仕上げ Options |
|---|---|---|---|
| Cold-Rolled 鋼 (SPCC) | 0.8-3.0mm | General indoor enclosures | 粉体塗装, wet paint |
| ステンレス鋼 304 | 0.8-2.5mm | Food, medical, outdoor | Brushed, 不動態化処理 |
| アルミニウム5052/6061 | 1.0-4.0mm | Lightweight, corrosion-resistant | 陽極酸化, powder coat |
| 亜鉛メッキ鋼 (SGCC) | 0.8-2.0mm | Outdoor, cost-sensitive | 粉体塗装 |
IP & NEMA Rating Guide for Enclosures
| Rating | Protection Level | Typical アプリケーション | Manufacturing Impact |
|---|---|---|---|
| IP54 / NEMA 3 | Dust-protected, splash-proof | Indoor industrial | 標準 gaskets, no special seals |
| IP65 / NEMA 4 | Dust-tight, water jet-proof | Outdoor, washdown | Continuous gasket, welded seams |
| IP66 / NEMA 4X | Dust-tight, powerful jets | Marine, harsh outdoor | ステンレス鋼, full seam 溶接 |
| IP67 / NEMA 6 | Dust-tight, temporary immersion | Submersible equipment | O-ring seals, pressure testing |
DFM Rules for シートメタルエンクロージャー
- Bend radius: Minimum inside radius = 材料 厚さ. For アルミニウム, use 1.5× 厚さ to prevent cracking.
- Hole-to-edge: ≥1.5× 材料 厚さ from hole center to edge. Closer spacing risks tear-out.
- Corner reliefs: Add bend relief notches (≥0.5mm width) at corners to prevent 材料 tearing during 曲げ加工.
- Weld seams: For IP65+ enclosures, specify continuous fillet welds on all external seams. Tack welds are insufficient.
- Mounting bosses: Use PEM inserts or weld nuts for threaded mounts. Avoid タッピング into thin (<2mm) sheet metal.
Enclosure Manufacturing プロセス at BravoFabs
Our enclosure production follows a 5-step プロセス: 1) レーザー切断 — flat pattern from your STEP/DXF file with ±0.1mm クライアント連絡：. 2) CNC 曲げ加工 — press brake forms all bends in sequence per bend order drawing. 3) 溶接 — TIG/MIG溶接 of corners, mounting ブラケット, and stiffeners. 4) 仕上げ — 粉体塗装 (80+ RAL colors), 陽極酸化 (clear or colored), or wet 塗装. 5) 組立 — install gaskets, hinges, latches, and test for IP rating compliance.
関連サービス
- カスタム金属筐体 — Our dedicated enclosure manufacturing service in Dongguan, China.
- 板金加工 — レーザー切断, CNC 曲げ加工, 溶接 & finishing for all industrial 用途s.
- CNC加工サービス — 精密 machined enclosure components, heat sinks, and mounting plates.
- 連絡先 us with your enclosure drawing for a 無料DFMレビュー and quote within 24 hours.
Related Service: Need a custom enclosure manufactured? See our カスタム板金エンクロージャー service — レーザー切断, CNC 曲げ加工, and 溶接 in Dongguan, China.
