Safety wire bolt plating

主な特徴
  • Primary Benefit: Prevents rust and oxidation in harsh environments (saltwater, chemicals, humidity).

  • Common Platings: Zinc, cadmium, nickel, and chrome provide excellent protection.

  • Industry Use: Cadmium plating (common in aerospace) offers superior corrosion resistance but is restricted in some regions due to toxicity.

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冷間圧造加工は、切削の少ない、あるいは切削を必要としない新しい圧造加工のひとつである。
金属。の作用による金属の塑性変形を利用した加工法である。
外力を受け、金型の助けを借りて、金属の体積を再分配し、移動させる。
必要な部品やブランクを製造します。冷間圧造工程は、標準的な
ボルト、ネジ、ナット、リベット、ピンなどの留め具。

Safety wire bolts, also known as lock-wire bolts or drilled head bolts, are specialized fasteners designed to be secured with safety wire (lock wire) to prevent loosening due to vibration or rotation. These bolts are commonly used in aerospace, automotive, motorsports, and other high-performance applications where reliability is critical.

Bolt Plating for Safety Wire Bolts:

Plating is applied to safety wire bolts to enhance corrosion resistance, reduce friction, improve appearance, and sometimes to meet specific conductivity or thermal requirements. Common plating options include:

1. Cadmium Plating (Cad)
  • Properties: Excellent corrosion resistance, good lubricity, and sacrificial protection.

  • Appearance: Yellowish-silver.

  • Common Use: Aerospace and military applications (though being phased out due to environmental concerns).

  • Limitations: Toxic, restricted under RoHS and REACH regulations.

2. Zinc Plating (Zn)
  • Properties: Good corrosion resistance, cost-effective.

  • Common Use: Automotive, industrial, and general-purpose applications.
  • Limitations: Less durable than cadmium in harsh environments.

4. Chrome Plating (Cr)
  • Properties: Extremely hard, excellent wear resistance, decorative.

  • Appearance: Mirror-like shine.

  • Common Use: High-performance engines, marine applications.

  • Limitations: Can be brittle and prone to chipping.

  • Safety wire bolt plating
Selection Considerations:
  • Environment: Marine or high-humidity applications may require cadmium or nickel.

  • Regulations: Cadmium is restricted in many industries; alternatives like zinc-nickel are preferred.

  • Temperature: Nickel and chrome handle high heat better than zinc.

  • Aesthetics: Chrome and nickel provide a polished look, while black oxide or zinc offers a matte finish.

Conclusion:

The choice of plating for safety wire bolts depends on the application’s mechanical, environmental, and regulatory requirements. Aerospace often uses cadmium or zinc-nickel, while automotive and industrial applications may opt for zinc or phosphate coatings. Always verify industry standards (e.g., ASTM, MIL-SPEC) when selecting plating for critical applications.

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