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
Safety Wire Bolt Electroplating Black – Overall Description
1. Overview
A safety wire bolt (也稱為 lockwire bolt) is a specialized fastener designed to be secured with safety wire to prevent loosening due to vibration or movement. Electroplating black is a surface treatment applied to the bolt for corrosion resistance, aesthetic appeal, and improved durability.
2. Electroplating Black Process
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材質: Typically applied to steel, stainless steel, or other metals.
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Coating Type: Usually involves zinc electroplating with a black chromate conversion coating (Zn + Black Passivation).
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Process Steps:
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Cleaning & Degreasing – Removes oils and contaminants.
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Acid Pickling – Eliminates rust and scales.
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Electroplating (Zinc Coating) – Deposits a layer of zinc for corrosion resistance.
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3. Key Features & Benefits
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Corrosion Resistance: Protects against rust and environmental exposure.
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Aesthetic Appeal: Provides a uniform, matte-black finish.
- Safety Wire Bolt electroplating black
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Durability: Extends bolt lifespan in harsh conditions (e.g., aerospace, automotive, marine).
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Electrical Conductivity: Maintains grounding capability (unlike some polymer coatings).
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Temperature Resistance: Suitable for moderate-high temperature applications.
4. Common Applications
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Aerospace: Engine components, landing gear, and critical fasteners.
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Military & Defense: Firearms, vehicle assemblies.
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Automotive & Racing: High-vibration environments.
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Industrial Machinery: Equipment requiring secure, vibration-resistant fastening.
- Safety Wire Bolt electroplating black
6. Considerations
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Compatibility: Must not interfere with torque or wire-locking function.
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Inspection: Coating should be uniform, free of peeling, and pass salt spray testing (e.g., 96+ hours ASTM B117).
Conclusion
A safety wire bolt with electroplated black finish combines mechanical security with enhanced corrosion protection, making it ideal for critical applications where reliability and longevity are essential.
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