US4377424A
Expired / Lapsed
US
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Mold of precipitation hardenable copper alloy for continuous casting mold
Assignee: Chuetsu Metal Works Co Ltd
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Filing: 1981-05-20
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Granted: 1983-03-22
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Expires: 2001-05-20
Abstract
Abstract A precipitation hardenable alloy suitable for forming molds for continuous casting of steel and other metal containing, by weight, 0.2-2.0% nickel, 0.05-0.5% beryllium, 0.01-1.0% niobium and the balance essentially copper. The alloy is subjected to heat treatment including solution treatment and aging, so that it has improved strength, high thermal conductivity and high toughness at elevated temperatures. The alloy may contain 0.03-0.6 wt % zirconium, 0.03-0.6 wt % zirconium and 0.01-0.1 wt % magnesium, or 0.03-0.6 wt % zirconium and 0.01-0.2 wt % titanium in place of the 0.01-1.0 wt % niobium.
Inventors
- 👤 Yutaka Hirao
- 👤 Kunio Hata
- 👤 Masao Hosoda
- 👤 Ryoichi Ishigane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:55
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/04; B22D11/059; C; C22; C22C; C22C9/00; C22C9/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
51 words
A mold for continuous casting of metals having high strength, high thermal conductivity and high heat resistance consisting of a precipitation hardenable alloy consisting essentially, by weight, of 0.2-2.0% nickel, 0.05-0.5% beryllium, 0.01-1.0% niobium and the balance essentially copper, wherein the mold has an electric conductivity of at least 65% IACS.
Claim 2
Dependent Claim
51 words
A mold for continuous casting of metals having high strength, high thermal conductivity and high heat resistance consisting of a precipitation hardenable alloy consisting essentially, by weight, of 0.2-2.0% nickel, 0.05-0.5% beryllium, 0.01-1.0% niobium and the balance essentially copper, wherein the mold has an electric conductivity of at least 65% IACS.
Claim 3
Dependent Claim
64 words
A mold for continuous casting of metals consisting of a precipitation hardenable alloy consisting essentially, by weight, of 0.2-2.0% nickel, 0.05-0.5% beryllium, 0.03-0.6% zirconium and the balance being copper, wherein the mold is provided with the properties of high strength, high electrical conductivity and high toughness at elevated temperatures due to heat treatment including solution treatment and aging to which the mold is subjected.
Claim 4
Dependent Claim
64 words
A mold for continuous casting of metals consisting of a precipitation hardenable alloy consisting essentially, by weight, of 0.2-2.0% nickel, 0.05-0.5% beryllium, 0.03-0.6% zirconium and the balance being copper, wherein the mold is provided with the properties of high strength, high electrical conductivity and high toughness at elevated temperatures due to heat treatment including solution treatment and aging to which the mold is subjected.
Claim 5
Dependent Claim
66 words
A mold for continuous casting of metals consisting of a precipitation hardenable alloy consisting, essentially by weight, of 0.2-2.0% nickel, 0.05-0.5% beryllium, 0.03-0.6% zirconium, 0.01-0.1% magnesium and the balance being copper, wherein the mold is provided with the properties of high strength, high electrical conductivity and high toughness at elevated temperatures due to heat treatment including solution treatment and aging to which the mold is subjected.
Claim 6
Dependent Claim
66 words
A mold for continuous casting of metals consisting of a precipitation hardenable alloy consisting, essentially by weight, of 0.2-2.0% nickel, 0.05-0.5% beryllium, 0.03-0.6% zirconium, 0.01-0.1% magnesium and the balance being copper, wherein the mold is provided with the properties of high strength, high electrical conductivity and high toughness at elevated temperatures due to heat treatment including solution treatment and aging to which the mold is subjected.
Claim 7
Dependent Claim
66 words
A mold for continuous casting of metals consisting of a precipitation hardenable alloy consisting essentially, by weight, of 0.2-2.0% nickel, 0.05-0.5% beryllium, 0.03-0.6% zirconium, 0.01-0.2% titanium and the balance being copper, wherein the mold is provided with the properties of high strength, high electrical conductivity and high toughness at elevated temperatures due to heat treatment including solution treatment and aging to which the mold is subjected.
Claim 8
Dependent Claim
66 words
A mold for continuous casting of metals consisting of a precipitation hardenable alloy consisting essentially, by weight, of 0.2-2.0% nickel, 0.05-0.5% beryllium, 0.03-0.6% zirconium, 0.01-0.2% titanium and the balance being copper, wherein the mold is provided with the properties of high strength, high electrical conductivity and high toughness at elevated temperatures due to heat treatment including solution treatment and aging to which the mold is subjected.
Claim 9
Dependent Claim
27 words
A mold as claimed in any one of claims 2-4 or 1 wherein the amount of nickel is from 0.2 to less than 1.0 by weight percent.
Claim 10
Dependent Claim
25 words
A mold as claimed in any one of claims 2-4, wherein the amount of zirconium is from 0.03 to less than 0.5 by weight percent.
Claim 11
Dependent Claim
40 words
A mold as claimed in any one of claims 2-4, wherein the amount of nickel is from 0.2 to less than 1.0 by weight percent and the amount of zirconium is from 0.03 to less than 0.5 by weight percent.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |