O processo de encabeçamento a frio é um dos novos processos para a maquinagem sob pressão com menos ou nenhum corte
metal. É um método de processamento que utiliza a deformação plástica do metal sob a ação de
forças externas e, com a ajuda de moldes, redistribui e transfere o volume de metal para formar
as peças ou os espaços em branco necessários. O processo de encabeçamento a frio é o mais adequado para a produção de
elementos de fixação, tais como cavilhas, parafusos, porcas, rebites, cavilhas, etc.
Here’s a structured overall description of safety wire bolts with yellow electroplating:
1. Definition & Purpose
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Safety Wire Bolts: Fasteners designed with holes or notches to allow the threading of safety wire, preventing loosening due to vibration or rotation.
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Yellow Electroplating: A surface treatment providing corrosion resistance, aesthetic appeal, and visibility (often for identification or safety marking).
2. Electroplating Process (Yellow)
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Base Material: Typically steel, stainless steel, or titanium.
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Plating Layer:
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Undercoat: Often zinc or cadmium electroplating for corrosion resistance.
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Topcoat: Yellow chromate conversion coating (for zinc) or yellow dye/paint (e.g., zinc-nickel alloy with yellow passivation).
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Standards: Compliant with ASTM B633 (zinc plating), MIL-DTL-45204 (cadmium), or AMS 2468 (yellow chromate).
- Safety Wire Bolt electroplating yellow
3. Key Features
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Resistência à corrosão: Yellow chromate layer enhances protection against rust.
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High Visibility: Bright yellow color aids quick inspection in machinery or aerospace applications.
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Durabilidade: Withstands harsh environments (e.g., automotive, marine, or aerospace).
4. Applications
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Aeroespacial: Engine components, landing gear.
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Automóvel: High-vibration areas (e.g., race cars, motorcycles).
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Máquinas industriais: Critical bolted joints subject to dynamic loads.
5. Safety Wire Compatibility
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Pre-drilled holes or wire grooves accommodate stainless steel safety wire (e.g., 0.032″ diameter).
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Wire wrapping follows ANSI/MSNAS standards to ensure secure locking.
- Safety Wire Bolt electroplating yellow
6. Advantages
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Resistência à vibração: Prevents bolt loosening.
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Chemical Protection: Electroplating shields against oxidation.
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Color Coding: Yellow may indicate specific torque or maintenance requirements.
7. Limitations
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Sensibilidade à temperatura: Some yellow dyes degrade at high temps (>250°C).
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Wear: Plating may wear off under friction; lubricants or additional coatings (e.g., PTFE) can help.
8. Compliance & Certifications
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ASTM/SAE: Standards for plating thickness/adhesion.
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RoHS/REACH: Compliance for hazardous substance restrictions.
9. Maintenance
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Regular inspections for plating wear or wire integrity.
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Avoid abrasive cleaners to preserve the yellow finish.
- Safety Wire Bolt electroplating yellow
10. Common Specifications
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Thread Standards: UNC/UNF, METRIC.
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Grades: Class 8.8, 10.9 (steel); A2/A4 (stainless).
This description ensures clarity for technical documentation, procurement, or engineering applications. Let me know if you need details on specific standards or testing methods!
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