Hammer rolling is a fundamental skill in the making of medieval armor. It allows an armorer to precisely add shape to a piece of steel while simultaneously adding strength, hardness and toughness
► Quenching armor and examples feat. Luke Binks at Red Hart Reproductions
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FOR THE NERDS ⚔️🤓
Hammer rolling is one huge way to up your armoring game from beginner to intermediate. This hack allows you to create curves in steel that are consistent, precise and smooth while simultaneously strengthening the piece you are forming.
In low carbon steel a.k.a. mild steel (less than 0.25% Carbon), such as we are using for this build, hammer rolling has the added benefit of work hardening. In engineering, work hardening or strain hardening is caused by plastic deformation, or repeated physical changes to the steel that increase the number of dislocations in the steel.
Dislocations are the gaps or irregularities that form between the crystalline micro structures of the steel. When there are too many of these dislocations, the steel can no longer deform in the same ways as unworked steel.
In contrast to thermal hardening, which directly influences the crystal structure at an atomic level, work hardening can only impart a degree of stiffness or hardness. Without the increased carbon content and the radical changing of the crystalline structure in the heating, quenching and tempering, work hardening mild steel can not achieve the same properties as thermal hardening. However, the toughness it does provide gives good stiffness to the steel making superior armor than that achieved through bending.
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Негізгі бет Armor Making TIPS | Hammer Rolling & Work Hardening
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