US5014768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chill plate having high heat conductivity and wear resistance
Assignee: Waters and Associates
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Filing: 1989-06-30
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Granted: 1991-05-14
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Expires: 2009-06-30
Abstract
Abstract A chill plate for continuous casting of high melting temperature metals. The chill plate is made from a copper substrate and subsequently coated by plasma spraying. The copper mold coating composition consists of a copper alloy, 10 to 20% by volume refractory powder having a mean particle size between about 5 to 250 microns, and 3 to 7% by volume of a flammable metal powder.
Inventors
- 👤 William J. Waters
- 👤 George W. Leissler
- 👤 Brian J. Edmonds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:31
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/04; B22D11/059
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
107 words
A chill plate for continuous casting of high melting temperature metals comprising: a copper substrate; a coating applied to said substrate by plasma spray application of a coating composition, said coating composition comprising: (i) copper powder having a mean particle size between about 44 microns and above 160 microns; (ii) about 10% to about 20%, based on the volume of copper powder, of silicon carbide having a mean particle size between about 37 microns and about 62 microns; and (iii) about 3% to about 7%, based on the volume of copper powder, of aluminum having a mean particle size between about 44 microns and about 90 microns.
Claim 2
Dependent Claim
107 words
A chill plate for continuous casting of high melting temperature metals comprising: a copper substrate; a coating applied to said substrate by plasma spray application of a coating composition, said coating composition comprising: (i) copper powder having a mean particle size between about 44 microns and above 160 microns; (ii) about 10% to about 20%, based on the volume of copper powder, of silicon carbide having a mean particle size between about 37 microns and about 62 microns; and (iii) about 3% to about 7%, based on the volume of copper powder, of aluminum having a mean particle size between about 44 microns and about 90 microns.
Claim 3
Dependent Claim
17 words
The chill plate of claim 1 wherein said coating has a thickness up to about 0.030 inches.
Claim 4
Dependent Claim
19 words
The chill plate of claim 2 wherein said substrate has a thickness of about 0.5 to about two inches.
Claim 5
Dependent Claim
12 words
The chill plate of claim 3 for continuous casting of ferrous metals.
Claim 6
Dependent Claim
94 words
A chill plate for continuous casing of high melting temperature metals comprising: a copper substrate; a coating applied to said substrate by plasma spray application of a coating composition, said coating composition comprising: (i) copper or copper alloy powder; (ii) about 10% to about 20%, based on the volume of copper or copper alloy powder, of a refractory powder having a mean particle size between about 5 microns and about 250 microns; and (iii) about 3% to about 7%, based on the volume of copper or copper alloy powder, of a flammable metal powder.
Claim 7
Dependent Claim
94 words
A chill plate for continuous casing of high melting temperature metals comprising: a copper substrate; a coating applied to said substrate by plasma spray application of a coating composition, said coating composition comprising: (i) copper or copper alloy powder; (ii) about 10% to about 20%, based on the volume of copper or copper alloy powder, of a refractory powder having a mean particle size between about 5 microns and about 250 microns; and (iii) about 3% to about 7%, based on the volume of copper or copper alloy powder, of a flammable metal powder.
Claim 8
Dependent Claim
21 words
The chill plate of claim 5 wherein said flammable metal power is selected from the group consisting of aluminum and magnesium.
Claim 9
Dependent Claim
33 words
The chill plate of claim 5 wherein said refractory powder is silicon carbide and said flammable metal powder is aluminum having a mean particle size between about 44 microns and about 90 microns.
Claim 10
Dependent Claim
25 words
The chill plate of claim 5 wherein said copper or copper alloy powder has a mean particle size between about 44 and about 160 microns.
Claim 11
Dependent Claim
23 words
The chill plate of claim 5 wherein said refractory powder has a mean particle size between about 5 microns and about 150 microns.
Claim 12
Dependent Claim
16 words
The chill plate of claim 5 wherein said coating has a porosity less than about 2%.
Claim 13
Dependent Claim
14 words
The chill plate of claim 5 wherein said coating is bonded to said substrate.
Claim 14
Dependent Claim
19 words
The chill plate of claim 11 wherein said coating has essentially the same coefficient of expansion as said substrate.
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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) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |