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Quench-hardened

Quench-hardened describes a material, typically metal, that has been subjected to a rapid cooling process (quenching) to increase its hardness and strength. This process involves heating the material to a specific temperature, then rapidly cooling it, often in water, oil, or air. The result is a refined microstructure that resists deformation and wear. Quench-hardening alters the material's internal structure, leading to a significantly increased resistance to scratching, indentation, and fracture. The degree of hardness depends on the alloy composition and the quenching process parameters.

Quench-hardened meaning with examples

  • The blacksmith carefully crafted the sword from high-carbon steel, meticulously heating and then quench-hardening the blade to achieve optimal sharpness and resilience, making it a formidable weapon. The rapid cooling process locked in the desired crystalline structure, allowing the steel to withstand impacts and hold a keen edge.
  • For the industrial application, the gears were quench-hardened to provide resistance to the repetitive stress and wear imposed by constant operation. The consistent, predictable temperatures allowed the manufacturing team to ensure consistency in the hardening process, ultimately extending the lifespan of the machinery.
  • During restoration, the old lock mechanism was found to be originally quench-hardened to prevent forced entries, and this demonstrated its original durability over time. Even with rust accumulation, the underlying hardness of the metal remained evident.
  • Modern precision instruments often incorporate quench-hardened components. This includes surgical tools and precision measuring equipment. The process yields tools with high wear-resistance and dimensional stability that is critical to their long-term accuracy and functionality.

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