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.
A flat head porca de barril is a type of fastener designed for specific applications where a low-profile, countersunk connection is needed. Here’s a detailed description:
Caraterísticas:
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Flat Head Design – The nut has a conical (tapered) underside that allows it to sit flush with the surface when installed in a countersunk hole.
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Barrel Shape – The body of the nut is cylindrical (barrel-shaped), often with internal or external threading.
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Tipo de rosca – Typically features internal threads (female threads) to accept a matching bolt or screw.
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Material – Commonly made from steel (carbon or stainless), brass, or aluminum, depending on strength and corrosion resistance needs.
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Drive Type – May include slots for a screwdriver, a hex socket, or another drive mechanism for installation.
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Finish – Can be plain, zinc-plated, black oxide, or coated for corrosion resistance.
- Flat head toothed barrel nut
Common Uses:
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Countersunk Fastening – Used in applications where a smooth, flush surface is required (e.g., furniture, automotive panels, aerospace components).
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Barrel Nuts in Furniture – Often found in flat-pack furniture (like IKEA) for hidden, sturdy joints.
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Machinery & Automotive – Used in assemblies where space is limited and a low-profile fastener is necessary.
Vantagens:
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Provides a sleek, flush finish.
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Distributes load efficiently due to the tapered seat.
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Helps prevent snagging in moving parts.
- Flat head toothed barrel nut
Disadvantages:
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Requires a countersunk hole, which may need precise machining.
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May have lower torque resistance compared to standard hex nuts.