Method and device for remelting and/or remelt-alloying metallic materials, in particular Nitinol
First Claim
Patent Images
1. A method for producing metallic semi-finished products by remelting and/or remelt-alloying of metallic materials, wherein solidification of the melt is effected by a cooling device, the method comprising:
- selectively remelting a portion of a desired area of a material volume of an initial semi-finished product locally in a melting capillary via focused radiation;
dissipating heat from the melting capillary via a non-remelted portion of the desired area of the material volume that is adjacent to the melting capillary;
cooling the non-remelted portion of the desired area of the material volume, substantially simultaneously with the remelting of the portion of the desired area of the material volume by the focused radiation, via at least one heat sink in order to further dissipate the heat from the melting capillary to the non-remelted portion of the desired area of the material volume, the heat sink being cooled by a cooling liquid;
coupling the heat sink to at least one part of at least one surface of the desired area of the material volume in a heat-conductive manner, the at least one part of the at least one surface being located close to a focus of the focused radiation on the desired area of the material volume or close to the melting capillary in the desired area of the material volume, respectively; and
moving the focus of the focused radiation over the desired area of the material volume or moving the melting capillary through the desired area of the material volume, respectively, for successively remelting an entirety of the desired area of the material volume, wherein the focus of the focused radiation and the material volume are moved relative to one another such that the desired area of the material volume is swept over by the focus,wherein the heat sink is a clamping device made of a heat-conductive material and that engages around the initial semi-finished product, the initial semi-finished product being clamped inside of the clamping device.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and an apparatus for producing metallic semi-finished products by means of remelting and/or remelt-alloying. Here, the material is melted selectively locally in a melting capillary in the material volume by means of high-energy, focused radiation, the melting capillary is moved through the material and the material is cooled down at a high cooling rate by means of a cooled heat sink, which is located close to the melting capillary and coupled to the material in a well heat-conductive manner.
-
Citations
17 Claims
-
1. A method for producing metallic semi-finished products by remelting and/or remelt-alloying of metallic materials, wherein solidification of the melt is effected by a cooling device, the method comprising:
-
selectively remelting a portion of a desired area of a material volume of an initial semi-finished product locally in a melting capillary via focused radiation; dissipating heat from the melting capillary via a non-remelted portion of the desired area of the material volume that is adjacent to the melting capillary; cooling the non-remelted portion of the desired area of the material volume, substantially simultaneously with the remelting of the portion of the desired area of the material volume by the focused radiation, via at least one heat sink in order to further dissipate the heat from the melting capillary to the non-remelted portion of the desired area of the material volume, the heat sink being cooled by a cooling liquid; coupling the heat sink to at least one part of at least one surface of the desired area of the material volume in a heat-conductive manner, the at least one part of the at least one surface being located close to a focus of the focused radiation on the desired area of the material volume or close to the melting capillary in the desired area of the material volume, respectively; and moving the focus of the focused radiation over the desired area of the material volume or moving the melting capillary through the desired area of the material volume, respectively, for successively remelting an entirety of the desired area of the material volume, wherein the focus of the focused radiation and the material volume are moved relative to one another such that the desired area of the material volume is swept over by the focus, wherein the heat sink is a clamping device made of a heat-conductive material and that engages around the initial semi-finished product, the initial semi-finished product being clamped inside of the clamping device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for producing metallic semi-finished products by remelting and/or remelt-alloying of metallic materials, wherein solidification of the melt is effected by a cooling device, the method comprising:
-
selectively remelting a portion of a desired area of a material volume of an initial semi-finished product locally in a melting capillary via focused radiation; dissipating heat from the melting capillary via a non-remelted portion of the desired area of the material volume that is adjacent to the melting capillary; cooling the non-remelted portion of the desired area of the material volume, substantially simultaneously with the remelting of the portion of the desired area of the material volume by the focused radiation, via at least one heat sink in order to further dissipate the heat from the melting capillary to the non-remelted portion of the desired area of the material volume, the heat sink being cooled by a cooling liquid; coupling the heat sink to at least one part of at least one surface of the desired area of the material volume in a heat-conductive manner, the at least one part of the at least one surface being located close to a focus of the focused radiation on the desired area of the material volume or close to the melting capillary in the desired area of the material volume, respectively; and moving the focus of the focused radiation over the desired area of the material volume or moving the melting capillary through the desired area of the material volume, respectively, for successively remelting an entirety of the desired area of the material volume, wherein the focus of the focused radiation and the material volume are moved relative to one another such that the desired area of the material volume is swept over by the focus, wherein the heat sink includes a heat-conductive material of copper or silver, and wherein the heat sink is formed to the material volume. - View Dependent Claims (11)
-
-
12. A method for producing metallic semi-finished products by remelting and/or remelt-alloying of metallic materials, wherein solidification of the melt is effected by a cooling device, the method comprising:
-
selectively remelting a portion of a desired area of a material volume of an initial semi-finished product locally in a melting capillary via focused radiation; dissipating heat from the melting capillary via a non-remelted portion of the desired area of the material volume that is adjacent to the melting capillary; cooling the non-remelted portion of the desired area of the material volume, substantially simultaneously with the remelting of the portion of the desired area of the material volume by the focused radiation, via at least one heat sink in order to further dissipate the heat from the melting capillary to the non-remelted portion of the desired area of the material volume, the heat sink being cooled by a cooling liquid; coupling the heat sink to at least one part of at least one surface of the desired area of the material volume in a heat-conductive manner, the at least one part of the at least one surface being located close to a focus of the focused radiation on the desired area of the material volume or close to the melting capillary in the desired area of the material volume, respectively; and moving the focus of the focused radiation over the desired area of the material volume or moving the melting capillary through the desired area of the material volume, respectively, for successively remelting an entirety of the desired area of the material volume, wherein the focus of the focused radiation and the material volume are moved relative to one another such that the desired area of the material volume is swept over by the focus, wherein a tube-shaped material is processed as the initial semi-finished product, and wherein a pipe formed of a heat-conductive material, which is flown-though by a cooling liquid, is used as the heat sink for the tube-shaped material.
-
-
13. A method for producing metallic semi-finished products by remelting and/or remelt-alloying of metallic materials, wherein solidification of the melt is effected by a cooling device, the method comprising:
-
selectively remelting a portion of a desired area of a material volume of an initial semi-finished product locally in a melting capillary via focused radiation; dissipating heat from the melting capillary via a non-remelted portion of the desired area of the material volume that is adjacent to the melting capillary; cooling the non-remelted portion of the desired area of the material volume, substantially simultaneously with the remelting of the portion of the desired area of the material volume by the focused radiation, via at least one heat sink in order to further dissipate the heat from the melting capillary to the non-remelted portion of the desired area of the material volume, the heat sink being cooled by a cooling liquid; coupling the heat sink to at least one part of at least one surface of the desired area of the material volume in a heat-conductive manner, the at least one part of the at least one surface being located close to a focus of the focused radiation on the desired area of the material volume or close to the melting capillary in the desired area of the material volume, respectively; and moving the focus of the focused radiation over the desired area of the material volume or moving the melting capillary through the desired area of the material volume, respectively, for melting successively remelting an entirety of the desired area of the material volume, wherein the focus of the focused radiation and the material volume are moved relative to one another such that the desired area of the material volume is swept over by the focus, wherein a plate-shaped or a strip-shaped material is processed as the initial semi-finished product, and wherein opposed clamping plates made of a heat-conductive material of a holding device are used as the heat sink, between which clamping plates the initial semi-finished product is clamped-in or guided through under pressure, and the initial semi-finished product is processed by a melting capillary formed between the clamping plates, which melting capillary is moved through the initial semi-finished product in the longitudinal direction of the semi-finished product. - View Dependent Claims (14, 15)
-
-
16. A method for producing metallic semi-finished products by remelting and/or remelt-alloying of metallic materials, wherein solidification of the melt is effected by a cooling device, the method comprising:
-
selectively remelting a portion of a desired area of a material volume of an initial semi-finished product locally in a melting capillary via focused radiation; dissipating heat from the melting capillary via a non-remelted portion of the desired area of the material volume that is adjacent to the melting capillary; cooling the non-remelted portion of the desired area of the material volume, substantially simultaneously with the remelting of the portion of the desired area of the material volume by the focused radiation, via at least one heat sink in order to further dissipate the heat from the melting capillary to the non-remelted portion of the desired area of the material volume, the heat sink being cooled by a cooling liquid; coupling the heat sink to at least one part of at least one surface of the desired area of the material volume in a heat-conductive manner, the at least one part of the at least one surface being located close to a focus of the focused radiation on the desired area of the material volume or close to the melting capillary in the desired area of the material volume, respectively; and moving the focus of the focused radiation over the desired area of the material volume or moving the melting capillary through the desired area of the material volume, respectively, for successively remelting an entirety of the desired area of the material volume, wherein the focus of the focused radiation and the material volume are moved relative to one another such that the desired area of the material volume is swept over by the focus, wherein a bolt-shaped material is processed as an initial semi-finished product, wherein a cooling jacket made of a heat-conductive material and enclosing the bolt-shaped material on its shell surface is used as the heat sink and the focus of the focused radiation is moved over a face side of the initial semi-finished product.
-
-
17. An apparatus for producing metallic semi-finished products by remelting and/or remelt-alloying of metallic materials, wherein solidification of the melt is effected by a cooling device, the apparatus comprising:
-
a radiation device for generating a focused radiation which is configured to selectively locally remelt a portion of a desired area of a material volume of an initial semi-finished product in a melting capillary, wherein dissipation of heat from the melting capillary is effected via a non-remelted portion of the desired area of the material volume that is adjacent to the melting capillary; a cooling device for cooling at least one heat sink, which is configured for further dissipating the heat from the melting capillary to the non-remelted portion of the desired area of the material volume by cooling the non-remelted portion of the desired area of the material volume down via the heat sink, while at the same time the portion of the desired area of the material volume is remelted by the focused radiation, wherein the heat sink is adapted to be coupled to at least one part of at least one surface of the desired area of the material volume in a heat-conductive manner and the heat sink is adapted to be cooled by means of a cooling liquid, wherein the at least one part of the at least one surface of the desired area of the material volume is located close to the focus of the focused radiation on the desired area of the material volume or close to the melting capillary in the desired area of the material volume, respectively, wherein, for successively remelting an entirety of the desired area of the material volume, the focus of the focused radiation is movable over the desired area of the material volume or the melting capillary is movable through the desired area of the material volume, respectively, wherein the focus of the focused radiation and the material volume are moveable relative to one another such that the desired area of the material volume is swept over by the focus, and wherein the heat sink is a clamping device made of a heat-conductive material and that engages around the initial semi-finished product, the initial semi-finished product being clamped inside of the clamping device.
-
Specification