A method and apparatus for heat treatment of an object, such as for hardening of objects with complex shapes such as crankshafts, includes the steps of projecting an energy beam such as a laser beam onto a surface of the object, operating a scanner so as to repetitively scan the beam to displace a primary spot in accordance with a first scanning pattern so as to establish an effective spot on the object, and displacing the effective spot in relation to the surface of the object. The beam follows an optical path between the scanner and the surface of the object. A beam deflector device is placed in the optical path to redirect the beam. The beam deflector device can be placed close to the surface of the object.
C21D 9/30 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for crankshaftsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for camshafts
C21D 1/09 - Surface hardening by direct application of electrical or wave energySurface hardening by particle radiation
B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
2.
Method and system for heat treatment of sheet metal
A method for heat treatment of an object of sheet metal, including heating at least one selected portion of the object using an energy beam, where the beam is projected onto a surface of the object so as to produce a primary spot on the object, the beam being repetitively scanned in two dimensions in accordance with a first scanning pattern so as to establish an effective spot on the object, the effective spot having a two-dimensional energy distribution, where the effective spot is displaced in relation to the surface of the object to progressively heat said at least one selected portion of the object.
B23K 26/359 - Working by laser beam, e.g. welding, cutting or boring for surface treatment by providing a line or line pattern, e.g. a dotted break initiation line
C21D 1/09 - Surface hardening by direct application of electrical or wave energySurface hardening by particle radiation
B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
B23K 101/00 - Articles made by soldering, welding or cutting
C21D 9/48 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals deep-drawing sheets
The invention relates to a method and apparatus for heat treatment of an object, such as for hardening of objects with complex shapes such as crankshafts. The method comprises the step of projecting an energy beam (1) such as a laser beam onto a surface of the object (1000), operating a scanner (2) so as to repetitively scan the beam (1) to displace a primary spot (11) in accordance with a first scanning pattern so as to establish an effective spot (12) on the object, and displacing said effective spot (12) in relation to the surface of the object (1000). The beam follows an optical path between the scanner (2) and the surface of the object (11), and a beam deflector device (3, 3A) is placed in the optical path to redirect the beam. The beam deflector device can be placed close to the surface of the object.
C21D 1/09 - Surface hardening by direct application of electrical or wave energySurface hardening by particle radiation
B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
C21D 9/30 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for crankshaftsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for camshafts
4.
METHOD AND APPARATUS FOR HEAT TREATMENT OF A FERROUS MATERIAL USING AN ENERGY BEAM
The invention relates to a method and apparatus for heat treatment of an object, such as for hardening of objects with complex shapes such as crankshafts. The method comprises the step of projecting an energy beam (1) such as a laser beam onto a surface of the object (1000), operating a scanner (2) so as to repetitively scan the beam (1) to displace a primary spot (11) in accordance with a first scanning pattern so as to establish an effective spot (12) on the object, and displacing said effective spot (12) in relation to the surface of the object (1000). The beam follows an optical path between the scanner (2) and the surface of the object (11), and a beam deflector device (3, 3A) is placed in the optical path to redirect the beam. The beam deflector device can be placed close to the surface of the object.
C21D 9/30 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for crankshaftsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for camshafts
C21D 1/09 - Surface hardening by direct application of electrical or wave energySurface hardening by particle radiation
B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
5.
METHOD AND SYSTEM FOR HEAT TREATMENT OF SHEET METAL
A method for heat treatment of an object of sheet metal, comprising the step of heating at least one selected portion of the object (100) using an energy beam (2). The beam (2) is projected onto a surface of the object (100) so as to produce a primary spot (2A) on the object, the beam being repetitively scanned in two dimensions in accordance with a first scanning pattern so as to establish an effective spot (21) on the object, the effective spot having a two-dimensional energy distribution. The effective spot (21) is displaced in relation to the surface of the object (100) to progressively heat said at least one selected portion of the object.
A method for heat treatment of an object of sheet metal, comprising the step of heating at least one selected portion of the object (100) using an energy beam (2). The beam (2) is projected onto a surface of the object (100) so as to produce a primary spot (2A) on the object, the beam being repetitively scanned in two dimensions in accordance with a first scanning pattern so as to establish an effective spot (21) on the object, the effective spot having a two-dimensional energy distribution. The effective spot (21) is displaced in relation to the surface of the object (100) to progressively heat said at least one selected portion of the object.
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