EP0126560A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Casting nozzle and method of casting using same
Assignee: Akechi Ceramics Co Ltd
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Filing: 1984-04-27
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Granted: —
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Expires: 2004-04-27
Abstract
Abstract To overcome the problem of carbon pick-up in the casting of ultra-low carbon steel, a casting nozzle is provided which is formed of a material comprising 70 to 98% by weight of at least one refractory material other than carbon or graphite, and 2 to 30 weight % of boron nitride.
Inventors
- 👤 Masanao Kondo
- 👤 Hironobu Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 13:38
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/50; B22D41/52; B22D41/54
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
34 words
A casting nozzle formed of a material comprising from 70 to 98 weight % of at least one refractory material other than carbon or graphite, and 2 to 30 weight % of boron nitride.
Claim 2
Dependent Claim
34 words
A casting nozzle formed of a material comprising from 70 to 98 weight % of at least one refractory material other than carbon or graphite, and 2 to 30 weight % of boron nitride.
Claim 3
Dependent Claim
44 words
A casting nozzle as claimed in claim 1, wherein said at least one refractory material is selected from sintered or electrically fused magnesium, non-stabilized or semi-stabilized zirconia, alpha-alumina, beta-alumina, mullite, sillimanite, clay material, fused silica, Si 3 N 4 , B4 C, and SiC.
Claim 4
Dependent Claim
27 words
A casting nozzle as claimed in claim 1, wherein at least one additive is included in the material to promote sintering and prevent oxidation of the nozzle.
Claim 5
Dependent Claim
17 words
A casting nozzle as claimed in any preceding claim, wherein the material contains an inorganic bonding agent.
Claim 6
Dependent Claim
22 words
A casting nozzle as claimed in claim 4 wherein said inorganic bonding material is present in an amount from 5 to 20%.
Claim 7
Independent Claim
60 words
A method of casting an ultra-low carbon steel using a casting nozzle formed from a material comprising from 70 to 98 weight % of a conventional refractory material other than carbon or graphite, and 2 to 30 weight % of boron nitride; and optionally including at least one additive to promote sintering and reduce oxidation and an inorganic bonding agent.
Claim 8
Independent Claim
60 words
A method of casting an ultra-low carbon steel using a casting nozzle formed from a material comprising from 70 to 98 weight % of a conventional refractory material other than carbon or graphite, and 2 to 30 weight % of boron nitride; and optionally including at least one additive to promote sintering and reduce oxidation and an inorganic bonding agent.
References Cited (Backward Citations)
No citation records indexed.
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