US 6,153,026 A · Method and device for temper-hardening flat metal products

Abstract

The invention discloses a method for temper hardening flat metal products, comprising the following steps: introducing a flat product coming out of the furnace into a temper-hardening bay, depositing this flat product on supporting elements forming a lower substantially horizontal supporting table, causing a sudden cooling of the flat product in the deposited position, by spraying a temper-hardening liquid simultaneously on the whole of its upper surface and on the whole of its lower surface, removing the flat product from the temper-hardening bay, and further, before the sudden cooling, transferring retaining elements forming together a substantially horizontal retaining table to a horizontal retaining plane at a predetermined distance above the upper surface of the flat product and, during the sudden cooling, optionally retaining the flat product on the upper retaining table, within the limits imposed by the said horizontal plane. The invention also discloses a device for implementing this method.

Claims18

Dependent claims

Tempering process for flat metal products comprising

an introduction of a flat product exiting from a furnace into a tempering station with an upper surface oriented upwardly and a lower surface oriented downwardly,
a location of the flat product on support elements forming together a substantially horizontal lower support table of the tempering station,
a sudden cooling of the flat product in the located position by spraying a tempering liquid simultaneously on all its upper and lower surfaces, and
a removal of the cooled flat product from the tempering station, as well as before the sudden cooling, a transference of retaining elements forming together a horizontal upper retaining table towards the upper surface of the flat product to be tempered, and comprising a stoppage of the transference with immobilization of the retaining elements in a horizontal retaining plane located at a distance from the upper surface of the flat product, and during the sudden cooling, a retention of the flat product by immobilized retaining elements, only when the flat product has a tendency to deform outside the limits imposed by the said horizontal retaining plane.

1 more element

Tempering apparatus for flat metallic products comprising

means for introducing a flat product exiting from a furnace into the apparatus with an upper surface directed upwardly and a lower surface directed downwardly
support elements forming a lower support table on which the introduced flat product is placed in a substantially horizontal position,
retaining elements forming together a substantially horizontal upper holding table
transference means capable of conveying the retaining elements above the upper surface of the flat product,
means for sudden cooling (19) of the flat product in the located position which submit it to a spray of tempering liquid simultaneously over all of its upper surface and all of its lower surface, and
means for removal of the cooled flat product from the tempering apparatus
comprising
control means for the transference means capable of controlling the transference means and of stopping them to immobilize the retaining elements in a horizontal retaining plane located a distance above the upper surface of the flat product to be tempered, and in that during the sudden cooling the immobilized retaining elements retain the product flat only when it has a tendency to deform outside limits laid down by the said horizontal retaining plane.

5 more elements

Dependencies are inferred from the claim text.

Method and device for temper-hardening flat metal products

Life of this patent

Method and device for temper-hardening flat metal products

Life of this patent

Abstract

Claims18