Continuous casting mold and a continuous casting method of copper alloy

Abstract

A continuous casting mold for a Cu alloy, using any one member selected from a glassy carbon, a metal-based self-lubricating composite or a graphite with a bulk density exceeding 1.92, at least for the mold member including the solidification starting position of the Cu alloy melt. A continuous casting mold for a Cu alloy, composed of any one member selected from a graphite, a ceramic and a metal member or of a combination of two or more parts of members thereof, in which at least the inner wall in the solidification starting position of the Cu alloy melt is coated with a self-lubricant or a metal-based self-lubricating composite material. A continuous casting method of a Cu alloy, comprised of giving, at the time of continuously casting the Cu alloy by an intermittent pulling out method, a vibration that has a frequency larger than the slab intermittent pulling out frequency by two orders or more and that has a component vertical to the pulling out direction of the slab, or continuously supplying a lubricant or an anti-sticking material between the inner wall of the mold and the slab.

1 - 14 . (canceled)  
   
   
       15 . A continuous casting mold for a Cu alloy, using a glassy carbon or a metal-based self-lubricating composite member, at least for the mold member including the solidification starting position of the Cu alloy melt.  
   
   
       16 . A continuous casting mold for a Cu alloy, composed of any one member selected from a graphite, a ceramic and a metal member or of a combination of two or more parts of members thereof, in which at least the inner wall in the solidification starting position of the Cu alloy melt is coated with a self-lubricant or a metal-based self-lubricating composite material.  
   
   
       17 . A continuous casting mold for a Cu alloy, composed of a combination of two or more parts of members selected from a self-lubricant, a metal-based self-lubricating composite, a graphite, a ceramic and a metal member, in which the self-lubricant or the metal-based self-lubricating composite member is used at least for the inner wall in the solidification starting position of the Cu alloy melt.  
   
   
       18 . A continuous casting mold for a Cu alloy, composed of a combination of two or more parts of members selected from a self-lubricant, a metal-based self-lubricating composite, a graphite, a ceramic and a metal member, in which at least the inner wall in the solidification starting position of the Cu alloy melt is coated with a self-lubricant or a metal-based self-lubricating composite material.  
   
   
       19 . The continuous casting mold for a Cu alloy according to  claim 15 , wherein the inner wall in the position that contacts with the Cu alloy melt is coated with a ceramic material.  
   
   
       20 . A continuous casting method of a Cu alloy, comprised of performing continuous casting by a slab intermittent pulling out method by use of the mold according to  claim 15 .  
   
   
       21 . The continuous casting method of a Cu alloy according to  claim 20 , comprised of giving, at the time of continuously casting the Cu alloy by an intermittent pulling out method, a vibration that has a frequency larger than the intermittent pulling out frequency by two orders or more and that has a component vertical to the pulling out direction of the slab.  
   
   
       22 . The continuous casting method of a Cu alloy according to  claim 20 , comprised of continuously supplying, at the time of continuously casting the Cu alloy by an intermittent pulling out method, a lubricant or an anti-sticking material between the inner wall of the mold and the slab.  
   
   
       23 . A continuous casting method of a Cu alloy according to  claim 20 , the cooling rate from the temperature of the start of solidification to 600° C. is 0.5° C./s or more, at the time of continuously casting the Cu alloy.  
   
   
       24 . The continuous casting method of a Cu alloy according to  claim 20 , wherein the Cu alloy contains, by mass %, one or more components selected from Cr: 0.01 to 5%, Ti: 0.01 to 5%, Zr: 0.01 to 5%, Nb: 0.01 to 5%, Ta: 0.01 to 5%, Al: 0.01 to 5%, Mo: 0.01 to 5%, V: 0.01 to 5%, Co: 0.01 to 5%, Mn: 0.01 to 5%, Si: 0.01 to 5%, Be: 0.01 to 5%, and Hf: 0.01 to 5%.  
   
   
       25 . The continuous casting method of a Cu alloy according to  claim 24 , wherein the Cu alloy further contains, by mass %, 0.001 to 5% in total of one or more of the alloy components selected from at least one group of the following three groups: 
 First group: 0.001 to 1 mass % in total of one or more selected from P, B, Sb, Bi, Pb, Cd, S and As;    Second group: 0.01 to 5 mass % in total of one or more selected from Sn, Ag, Zn, Ni, Au, Pd, Fe, W, In and Ge; and    Third group: 0.01 to 3 mass % in total of one or more selected from Te, Se, Sr, TI, Rb, Cs, Ba, Re, Os, Rh, Po, Ga, Tc, Ru, Pd, Ir, Pt and Ta.    
   
   
       26 . The continuous casting method of a Cu alloy according to  claim 24 , wherein the Cu alloy further contains, by mass %, 0.001 to 2% in total of one or more of alloy components selected from Li, Ca, Mg and rare earth elements.