Safety Wire Bolt electroplating black

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

• 材質： Typically applied to steel, stainless steel, or other metals.

• Coating Type: Usually involves zinc electroplating with a black chromate conversion coating (Zn + Black Passivation).

• Process Steps:

  1. Cleaning & Degreasing – Removes oils and contaminants.

  2. Acid Pickling – Eliminates rust and scales.

  3. Electroplating (Zinc Coating) – Deposits a layer of zinc for corrosion resistance.

3. Key Features & Benefits

• Corrosion Resistance: Protects against rust and environmental exposure.

• Aesthetic Appeal: Provides a uniform, matte-black finish.

• Safety Wire Bolt electroplating black

• Durability: Extends bolt lifespan in harsh conditions (e.g., aerospace, automotive, marine).

• Electrical Conductivity: Maintains grounding capability (unlike some polymer coatings).

• Temperature Resistance: Suitable for moderate-high temperature applications.

4. Common Applications

• Aerospace: Engine components, landing gear, and critical fasteners.

• Military & Defense: Firearms, vehicle assemblies.

• Automotive & Racing: High-vibration environments.

• Industrial Machinery: Equipment requiring secure, vibration-resistant fastening.

• Safety Wire Bolt electroplating black

6. Considerations

• Compatibility: Must not interfere with torque or wire-locking function.

• 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.