Liquid-cooled plate mold

Abstract

A liquid-cooled plate mold for continuous casting of metals has highly heat-conductive mold plates of copper or a copper alloy. The mold plates have a water side. A fastening support for each mold plate is provided for securing the mold plate thereon. The fastening support is in the form of a water box or a support plate. Fastening elements for securing the mold plates to the fastening supports are provided. Shaped parts having a thread are arranged on the water side of the mold plates. The shaped parts form fastening pieces that are non-positively connected by soldering connections or welding connections to the mold plates, wherein the fastening elements engage the fastening pieces.

What is claimed is:  
     
         1 . A liquid-cooled plate mold for continuous casting of metals, the plate mold comprising: 
 highly heat-conductive mold plates of copper or a copper alloy, the mold plates having a water side;    a fastening support for each one of the mold plates configured to have the mold plate secured thereon, wherein the fastening support is in the form of a water box or a support plate;    fastening elements configured to secure the mold plates to the fastening supports;    shaped parts having a thread and being arranged on the water side of the mold plates, wherein the shaped parts form fastening pieces that are non-positively connected by soldering connections or welding connections to the mold plates, wherein the fastening elements engage the fastening pieces.    
     
     
         2 . The plate mold according to    claim 1   , wherein the fastening pieces are comprised of a conducting metal material selected from the group consisting of CuAg, CuCrZr, CuNiBe, and CuNiFe.  
     
     
         3 . The plate mold according to    claim 1   , wherein the soldering connection connecting the fastening pieces to the mold plates is a soft solder layer.  
     
     
         4 . The plate mold according to    claim 3   , wherein the soft solder layer has high shearing strength and is comprised of a solder alloy material selected from the group consisting of L CdZn, L CdZnAg, and L SnCdZn.  
     
     
         5 . The plate mold according to    claim 1   , wherein the soldering connection connecting the fastening pieces to the mold plates is a hard solder layer.  
     
     
         6 . The plate mold according to    claim 5   , wherein the hard solder layer is comprised of a solder alloy material selected from the group consisting of a copper alloy and a silver alloy.  
     
     
         7 . The plate mold according to    claim 1   , wherein the soldering connection connecting the fastening pieces to the mold plates is a high-temperature soldering connection.  
     
     
         8 . The plate mold according to    claim 7   , wherein the high-temperature soldering connection is made by using an electron beam or electric current.  
     
     
         9 . The plate mold according to    claim 7   , wherein the high-temperature soldering connection comprises a high-temperature solder layer comprised of a solder material selected from the group consisting of copper alloy and silver alloy.  
     
     
         10 . The plate mold according to    claim 1   , wherein the mold plates have solder surfaces where the fastening pieces are connected and wherein the solder surfaces are metallized for enabling an exact positioning of the fastening pieces.  
     
     
         11 . The plate mold according to    claim 1   , wherein the fastening pieces have an annular cross-section, wherein the mold plate has a back side provided with shallow recesses being congruent to the fastening pieces, wherein the fastening pieces are inserted into the recesses and are connected by the soldering connections in the recesses, wherein the fastening support has one or more cooling medium bores, wherein the cooling medium bore surrounds one of the fastening pieces with a spacing to the cooling medium bore being provided all around the fastening piece, wherein the cooling medium bore is in flow communication with at least one cooling medium channel provided in the plate mold.  
     
     
         12 . The plate mold according to    claim 11   , wherein the fastening pieces have threaded inserts.  
     
     
         13 . The plate mold according to    claim 11   , wherein the fastening support has receiving bores for receiving the fastening elements in the form of fastening bolts, wherein a diameter of the receiving bores is greater than a diameter of a shaft of the fastening bolts so that an annular gap is formed between the shaft of the fastening bolt and the receiving bore, wherein each one of the annular gaps communicates with one of the cooling medium bores.  
     
     
         14 . The plate mold according to    claim 11   , wherein the cooling medium channels are arranged in the mold plate or in the support plate or in a plate of the water box resting against the mold plate.  
     
     
         15 . The plate mold according to    claim 11   , wherein the cooling medium channels are located in the mold plate and are in the form of grooves or channel bores.  
     
     
         16 . The plate mold according to    claim 15   , wherein the grooves or channel bores extend in the casting direction.  
     
     
         17 . The plate mold according to    claim 1   , wherein the fastening elements are fastening bolts with a bolt head, wherein support elements, selected from the group consisting of washers and spring elements, are positioned between the bolt heads and the fastening support.  
     
     
         18 . The plate mold according to    claim 1   , wherein the welding connection connecting the fastening pieces to the mold plates is an electron beam welding seam.  
     
     
         19 . The plate mold according to    claim 18   , wherein the electron beam welding seam is arranged on an external side of the fastening pieces.  
     
     
         20 . The plate mold according to    claim 18   , wherein the fastening piece is annular and has an outer diameter with an enlarged diameter portion in the area where the electron beam welding seam is produced.  
     
     
         21 . The plate mold according to    claim 20   , wherein the enlarged diameter portion is 1 to 8 mm greater than the outer diameter.  
     
     
         22 . The plate mold according to    claim 18   , wherein the mold plate has projections in the area where the electron beam welding seam is produced, wherein the projections have a height matching a depth of the electron beam welding seam.  
     
     
         23 . The plate mold according to    claim 18   , wherein the fastening pieces are comprised of steel.  
     
     
         24 . The plate mold according to    claim 18   , wherein the fastening pieces are comprised of a high-strength copper alloy.  
     
     
         25 . The plate mold according to    claim 18   , wherein the fastening elements are fastening bolts.  
     
     
         26 . The plate mold according to    claim 25   , wherein the fastening bolts have an outer thread.  
     
     
         27 . The plate mold according to    claim 25   , wherein the fastening bolts have a shaft that has an enlarged diameter portion in the area where the electron beam welding seam is produced.  
     
     
         28 . The plate mold according to    claim 27   , wherein the enlarged diameter portion is greater by 1 to 8 mm than a diameter of the shaft outside the enlarged diameter portion.  
     
     
         29 . The plate mold according to    claim 25   , wherein the fastening bolts are comprised of steel.