A composite utility knife blade and method of making such a blade involves butt joining a tool steel wire to a front edge of an alloy steel backing strip. The wire is electron beam welded to the backing strip to form a composite strip defining a first metal portion formed by the alloy steel backing strip,...http://www.google.es/patents/US20030019332?utm_source=gb-gplus-sharePatente US20030019332 - Composite utility knife blade, and method of making such a blade
Composite utility knife blade, and method of making such a blade
