(57) The invention relates to plant designed particularly for carrying out heat-treatment
on crawler track-links. Links (2) are taken from being forged while still hot, and
subjected to a hardening-and-tempering process taking place along a production line
incorporating two furnaces, along which the links themselves are conveyed in orderly
fashion, slung up each one on a single hook (6); there being a given number of such
hooks for each carrier (7) used in the plant, each one of which capable of turning
about its own axis, and of being locked into a given position with respect to the
carrier (7) itself. Provision is made for the carriers' (7) being transferred along
the line one behind the next, automatically, and in orderly fashion.
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