US4589930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting metal mold and method of producing the same
Assignee: Hitachi Ltd
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Filing: 1984-02-29
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Granted: 1986-05-20
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Expires: 2004-02-29
Abstract
Abstract A casting metal mold made of a copper alloy consisting essentially of 0.01 to 3 wt % of zirconium, 0.03 to 5 wt % of titanium and, as required, 0.03 to 2 wt % of chromium and the balance substantially copper, the copper alloy having a structure in which precipitate phase consisting of compound of copper and at least one of zirconium, titanium and chromium exists, and having a Brinell hardness between HB 100 to HB 500 and an electric conductivity between 20 and 80% in terms of IACS. This metal mold suffers only small deformation during casting and, hence, less liable to cause run-out of the melt. The casting obtained by this metal mold, therefore, has no or only slight fins.
Inventors
- 👤 Yozo Kumagai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:59
CPC Classifications
C; C22; C22C; C22C9/00; B; B22; B22C; B22C9/00; B22C9/06; B22C9/061
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
88 words
A batch-type casting metal mold made of a copper alloy consisting essentially of 0.01 to 3 wt % of zirconium, 0.03 to 5 wt % of titanium and the balance substantially copper, said alloy having a structure in which a precipitate phase consisting of a compound of copper and at least one of zirconium and titanium exists, said metal mold having, at the normal temperature a Brinell hardness between H B 100 and H B 500 and an electric conductivity between 20 and 80% in terms of IACS.
Claim 2
Dependent Claim
88 words
A batch-type casting metal mold made of a copper alloy consisting essentially of 0.01 to 3 wt % of zirconium, 0.03 to 5 wt % of titanium and the balance substantially copper, said alloy having a structure in which a precipitate phase consisting of a compound of copper and at least one of zirconium and titanium exists, said metal mold having, at the normal temperature a Brinell hardness between H B 100 and H B 500 and an electric conductivity between 20 and 80% in terms of IACS.
Claim 3
Dependent Claim
40 words
A casting metal mold according to claim 1, wherein said metal mold has at least two mold parts which, when mechanically assembled together, define therein a mold cavity conforming wiht the contour of the article to be formed by casting.
Claim 4
Dependent Claim
22 words
A casting metal mold according to claim 2, wherein the inner surface of said mold cavity is coated with a coating layer.
Claim 5
Dependent Claim
17 words
A casting metal mold according to claim 1, wherein said metal mold has an internal water-cooling structure.
Claim 6
Dependent Claim
96 words
A batch-type casting metal mold made of a copper alloy consisting essentially of 0.01 to 3 wt % of zirconium, 0.03 to 5 wt % of titanium, 0.03 to 2 wt % of chromium and the balance substantially copper, said alloy having a structure in which a precipitate phase consisting of a compound of copper and at least one of zirconium, titanium and chromium exists, said metal mold having, at the normal temperature, a Brinell hardness between H B 100 and H B 500 and an electric conductivity between 20 and 80% in terms of IACS.
Claim 7
Dependent Claim
96 words
A batch-type casting metal mold made of a copper alloy consisting essentially of 0.01 to 3 wt % of zirconium, 0.03 to 5 wt % of titanium, 0.03 to 2 wt % of chromium and the balance substantially copper, said alloy having a structure in which a precipitate phase consisting of a compound of copper and at least one of zirconium, titanium and chromium exists, said metal mold having, at the normal temperature, a Brinell hardness between H B 100 and H B 500 and an electric conductivity between 20 and 80% in terms of IACS.
Claim 8
Dependent Claim
40 words
A casting metal mold according to claim 5, wherein said metal mold has at least two mold parts which, when mechanically assembled together, define therein a mold cavity conforming with the contour of the article to be formed by casting.
Claim 9
Dependent Claim
22 words
A casting metal mold according to claim 6, wherein the inner surface of said mold cavity is coated with a coating layer.
Claim 10
Dependent Claim
17 words
A casting metal mold according to claim 5, wherein said metal mold has an internal water-cooling structure.
Claim 11
Independent Claim
152 words
A method of producing a batch-type casting metal mold made of a copper alloy consisting essentially of 0.01 to 3wt % of zirconium, 0.03 to 5 wt % of titanium, up to 2 wt % of chromium, and the balance substantially copper, said alloy having a structure in which a precipitate phase consisting of a compound of copper and at least one of zirconium, titanium and chromium exists, said metal mold having, at the normal temperature, a Brinell hardness between H B 100 and H B 500 and an electric conductivity between 20 and 80% in terms of IACS, said method comprising the steps of: subjecting an ingot of said copper alloy to a solid solution treatment; effecting a cold working after said solid solution treatment; and subjecting the cold-worked ingot to an aging treatment so as to precipitate said compound of copper and at least one or zirconium, titanium and chromium.
Claim 12
Independent Claim
152 words
A method of producing a batch-type casting metal mold made of a copper alloy consisting essentially of 0.01 to 3wt % of zirconium, 0.03 to 5 wt % of titanium, up to 2 wt % of chromium, and the balance substantially copper, said alloy having a structure in which a precipitate phase consisting of a compound of copper and at least one of zirconium, titanium and chromium exists, said metal mold having, at the normal temperature, a Brinell hardness between H B 100 and H B 500 and an electric conductivity between 20 and 80% in terms of IACS, said method comprising the steps of: subjecting an ingot of said copper alloy to a solid solution treatment; effecting a cold working after said solid solution treatment; and subjecting the cold-worked ingot to an aging treatment so as to precipitate said compound of copper and at least one or zirconium, titanium and chromium.
Claim 13
Dependent Claim
34 words
A method of producing a casting metal mold according to claim 9, characterized by further comprising a step of effecting a hot working on said ingot in advance to said solid solution treatment step.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |