This jewelry and ring cutter tool has a hardened steel blade which will cut through any kind of jewelry metal including gold, silver, and platinum. It is safe to use to cut a ring off a finger in emergency situations, as well as for jewelers, when cutting a ring to resize it. Overall measures 4.75 x 1.5 x 1.75” (12 x 3.8 x 4.4 cm)

Strain hardening

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The work hardening, also known as strain hardening, is the strengthening of a metal or polymer by plastic deformation. The plastic deformation of the metals is made below the recrystallization temperature. In most cases, such cold forming is done at room temperature. The major cold-working operations can be classified basically as squeezing (rolling), bending, shearing and drawing.[1]

Workhardening examples

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The cold-working process uses the pressure and speed of a mechanical or hydraulic press. The press takes a metal ‘blank’ and shapes it using a ‘punch’ and ‘die’ set. Basically, the punch is the tool used for shaping, and the ‘die’ is the clamp that holds the metal. When these metals are cold worked, permanent defects change their crystalline makeup. These defects reduce the ability of crystals to move within the metal structure and the metal becomes more resistant to further deformation. The resulting metal product has improved tensile strength and hardness, but less ductility.[2]