Continuous casting mold and a continuous casting method of copper alloy

• US 20060180293A1
• Filed: 03/23/2006
• Published: 08/17/2006
• Est. Priority Date: 09/24/2003
• Status: Abandoned Application

• Current Assignee: Sumotomo Metal Industries, Ltd.
• Original Assignee: Sumitomo Metal Industries Limited (Nippon Steel Corporation)
• Inventors: Aoki, Masahiro, Yoshida, Naotsugu, Nakajima, Keiji, Yonemura, Mitsuharu, Maehara, Yasuhiro
• Application Number:
  US11/386,924
• Publication Number:
  US 20060180293A1
• Time in Patent Office: Days
• US Class Current: 164/459
• CPC Class Codes: B22D 11/004 Copper alloys
• CPC Class Codes: B22D 11/059 Mould materials or platings
• CPC Class Codes: B22D 11/12 Accessories for subsequent treating or working cast stock in situ rolling immediately subsequent to continuous casting B21B1/46, B21B13/22
• CPC Class Codes: B22D 11/143 for horizontal casting
• CPC Class Codes: C22C 9/00 Alloys based on copper
• CPC Class Codes: C22C 9/02 with tin as the next major constituent
• CPC Class Codes: C22C 9/04 with zinc as the next major constituent
• CPC Class Codes: C22C 9/10 with silicon as the next major constituent

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.

Claims

1-14. -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.

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.

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.