螺栓與螺帽的鎖緊與開口採用非標準設計,搭配
使用非標準工具來解決打開和緊固問題。一般而言,其他
wrenches cannot be inserted. In the appearance design of nuts and bolts, non-standard slotting,
開口或五角、七角、九角或客製化對應槽工具
起到了很好的防盜效果
冷镦加工是一种少切削或无切削的压力加工新工艺
金屬。它是一種利用金屬在下列因素作用下產生塑性變形的加工方法
外力作用下,在模具的幫助下,重新分配和轉移金屬的體積,以形成
所需的零件或坯料。冷镦工艺最适合生产标准的
螺栓、螺絲、螺帽、鉚釘和銷等緊固件
An Aluminum nuts red oxide is a fastener that has undergone a surface treatment to achieve a red-colored finish, typically through anodizing, chemical dyeing, or specialized oxide coatings. This process enhances both aesthetics and functionality. Below is a detailed breakdown:
1. Material
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Made from aluminum alloys (common grades: 6061-T6, 2024, or 7075 for strength and corrosion resistance).
2. Red Oxide Process
Anodized Red
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Sulfuric Acid Anodizing (Type II) – The aluminum nut is anodized to create a porous oxide layer, then dyed red using organic or inorganic dyes before sealing.
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Hard Anodizing (Type III) – Produces a thicker, more durable layer, sometimes resulting in a deeper red or burgundy hue.
Red Chromate Conversion Coating
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A chemical treatment (e.g., Alodine/MIL-DTL-5541) that deposits a reddish-gold 或 red oxide layer.
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Provides corrosion resistance while maintaining electrical conductivity.
Specialized Red Oxide Coatings
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Some manufacturers apply ceramic-based 或 epoxy-infused red coatings for extreme environments.
3. Features & Benefits
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耐腐蝕性 – Protects against oxidation, salt spray, and chemicals.
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High Visibility – Red color is useful for safety markings or assembly identification.
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Decorative Appeal – Used in consumer products, automotive, and custom builds.
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Lightweight – Maintains aluminum’s strength-to-weight ratio.
4. Common Applications
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Aerospace & Defense – Red anodized nuts for high-visibility or critical assemblies.
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Automotive & Racing – Custom red fasteners for engine bays or suspension parts.
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Electronics – Color-coded nuts in circuit boards or machinery.
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Marine & Outdoor Gear – Enhanced weather resistance with a bold appearance.
5. Variations in Red Finish
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Bright Red – Achieved with organic dyes in anodizing (common for decorative uses).
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Dark Red/Burgundy – Result of longer dye immersion or hard anodizing.
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Matte or Glossy – Depends on surface prep (e.g., bead blasting for matte, polishing for gloss).
6. Limitations
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UV Sensitivity – Red dyes may fade over time if not properly sealed.
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Lower Strength – Aluminum nuts are not suitable for high-torque applications like steel.
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Chemical Restrictions – Some red chromates contain regulated substances (e.g., hexavalent chromium).
Industry Standards
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Anodizing: MIL-A-8625 (Type II/III)
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Chromate Coating: MIL-DTL-5541 (Class 1A for hexavalent chromium, Class 3 for RoHS-compliant alternatives)
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