EP0198613A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improved method of manufacturing metal products
Assignee: Sandvik Osprey Ltd
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Filing: 1986-03-25
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Granted: —
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Expires: 2006-03-25
Abstract
Abstract A method and apparatus for producing a coherent spray deposited product from liquid metal or metal alloy is provided. The method comprises atomising a stream of molten metal to form a spray and providing additional cooling by applying to the stream or spray relatively cold solid particles. The solid particles are preferably injected into the spray and may be formed from overspray particles recycled from the deposition process.
Inventors
- 👤 Alan Leatham
- 👤 Reginald Gwynn Brooks
- 👤 Jeffrey Coomes
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 12:49
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082; B22D; B22D23/00; B22D23/003; B22F3/00; B22F3/115; C; C23; C23C; C23C4/00; C23C4/12; C23C4/123; B22F2009/086; B22F2009/0868; B22F2009/0888; B22F2998/00; Y; Y10; Y10S; Y10S164/00; Y10S164/90
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
64 words
A method of producing a coherent spray deposited product from liquid metal or metal alloy comprising the steps of atomising a stream of molten metal or metal alloy to form a spray of hot metal atomised particles by subjecting the stream to relatively cold gas directed at the stream, and providing additional cooling by applying to the stream or spray relatively cold solid particles.
Claim 2
Independent Claim
64 words
A method of producing a coherent spray deposited product from liquid metal or metal alloy comprising the steps of atomising a stream of molten metal or metal alloy to form a spray of hot metal atomised particles by subjecting the stream to relatively cold gas directed at the stream, and providing additional cooling by applying to the stream or spray relatively cold solid particles.
Claim 3
Dependent Claim
30 words
A method of producing a coherent spray deposited product according to claim 1 wherein the solid particles are of the same composition as the metal or metal alloy being atomised.
Claim 4
Dependent Claim
35 words
A method of producing a coherent spray deposited product according to claim 1 wherein the solid particles are of a different composition, either metallic or non- metallic to the metal or metal alloy being atomised.
Claim 5
Independent Claim
27 words
A method of producing a coherent spray deposited product according to any one of claims 1 to 3 wherein the solid particles are injected into the spray.
Claim 6
Dependent Claim
31 words
A method of producing a coherent spray deposited product according to claim 2 wherein overspray powder from the deposition process is recycled and used as a source for the solid particles.
Claim 7
Independent Claim
60 words
A method of producing a coherent spray deposited product according to any of the preceding claims 1 to 4 wherein the solid particles are applied by generating a fluidised bed of the particulate material and transporting the material in a gas stream from the bed into the spray so that the applied solid particles are co-deposited with the atomised particles.
Claim 8
Independent Claim
123 words
A method of producing a rapidly solidified spray deposit from liquid metal or metal alloy comprising the steps of atomising a stream of molten metal or metal alloy to form a spray of hot metal atomised particles by subjecting the stream of molten metal or metal alloy to relatively cold gas directed at the stream, injecting into the stream or spray solid injected particles of the same composition as the metal or metal alloy being atomised at a temperature less than the superheat of the metal or metal alloy being atomised whereby a critical amount of heat is extracted from the metal or metal alloy atomised particles both in flight and on deposition by the atomising gas and by the injected solid particles.
Claim 9
Independent Claim
123 words
A method of producing a rapidly solidified spray deposit from liquid metal or metal alloy comprising the steps of atomising a stream of molten metal or metal alloy to form a spray of hot metal atomised particles by subjecting the stream of molten metal or metal alloy to relatively cold gas directed at the stream, injecting into the stream or spray solid injected particles of the same composition as the metal or metal alloy being atomised at a temperature less than the superheat of the metal or metal alloy being atomised whereby a critical amount of heat is extracted from the metal or metal alloy atomised particles both in flight and on deposition by the atomising gas and by the injected solid particles.
Claim 10
Dependent Claim
30 words
A coherent spray deposited product in which the rate of solidification has been accelerated by means of the deposit being seeded with co-deposited solid particles which extract heat by conduction.
Claim 11
Dependent Claim
30 words
A coherent spray deposited product in which the rate of solidification has been accelerated by means of the deposit being seeded with co-deposited solid particles which extract heat by conduction.
Claim 12
Dependent Claim
18 words
A coherent spray deposited product in which the grain size is in the rang 1 to 300 micron.
Claim 13
Dependent Claim
18 words
A coherent spray deposited product in which the grain size is in the rang 1 to 300 micron.
Claim 14
Dependent Claim
16 words
A coherent spray deposited product in which the average grain size is less than 30 microns.
Claim 15
Dependent Claim
16 words
A coherent spray deposited product in which the average grain size is less than 30 microns.
Claim 16
Dependent Claim
82 words
Apparatus for forming a coherent spray deposit comprising a collecting surface, means from producing a stream of molten metal or metal alloy, and means for atomising the stream to produce a spray of molten metal or metal alloy particles directed at the collecting surface whereby a coherent spray deposit is formed on the collector characterised by means for introducing relatively cold solid particles into the stream or spray and means for collecting non-deposited overspray and recycling the overspray to the introducing means.
Claim 17
Dependent Claim
82 words
Apparatus for forming a coherent spray deposit comprising a collecting surface, means from producing a stream of molten metal or metal alloy, and means for atomising the stream to produce a spray of molten metal or metal alloy particles directed at the collecting surface whereby a coherent spray deposit is formed on the collector characterised by means for introducing relatively cold solid particles into the stream or spray and means for collecting non-deposited overspray and recycling the overspray to the introducing means.
Claim 18
Dependent Claim
28 words
Apparatus according to claim 11 wherein the introducing means comprises means for fluidising the solid particles and means for transporting the fluidised particles into the stream or spray.
Claim 19
Dependent Claim
15 words
Apparatus according to claim 12 wherein the transporting means is a separate transporting gas stream.
Claim 20
Dependent Claim
25 words
Apparatus according to claim 11, 12 or 13 wherein the recycling means includes a particle separator for extracting overspray particles from an exhausting gas stream.
References Cited (Backward Citations)
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