Nails having selected heat treatment and hardening

Details Nails having selected heat treatment and hardening Nails having selected heat treatment and hardening

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 15/00 (2006.01) B21G 3/00 (2006.01) B21G 3/18 (2006.01) B21G 5/00 (2006.01) C21D 9/26 (2006.01)

Patent

CA 2290532

A selectively hardened nail includes a nail head, an elongated shank, and a tip. A portion of the nail shank is made harder than the remainder by selectively heat treating that portion, and cooling it. The nail has controlled bending properties. The selectively hardened portion does not significantly bend when the nail is fired at a surface using a power driving tool, or during use of the nailed object.

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