EP 0852976 A1 19980715 - Method and apparatus for spraycasting
Title (en)
Method and apparatus for spraycasting
Title (de)
Verfahren und Anlage zum Aufsprühen
Title (fr)
Méthode et dispositif de moulage par pulvération
Publication
Application
Priority
US 76300896 A 19961210
Abstract (en)
Spraycasting method involves directing an atomized metal or alloy spray from a tundish quiescent chamber (A) at a collector (30) disposed in a spray chamber (B) and in-situ evacuating of the spray chamber (B) during spray deposition to a maintain spray chamber gas partial pressure less than about 400 torr. The spray deposit leading edge region is oriented at a selected acute angle relative to horizontal to improve the quality of the spray deposit by reducing inner diameter fissure porosity. The collector (30) can be heated in-situ proximate the leading edge of the deposit at an initial deposition location. The collector is thermally insulated and capable of accommodating thermal expansion of the collector surface. In addition, the scan rate and distance of a scanning atomizer is slaved to the rotational speed of the collector such that actual atomizer dwell time (spraying time) is lessened as the collector rpm is increased. <IMAGE>
IPC 1-7
IPC 8 full level
B22D 23/00 (2006.01); B22F 3/115 (2006.01); C23C 4/12 (2006.01)
CPC (source: EP)
B22D 23/003 (2013.01); C23C 4/123 (2016.01)
Citation (search report)
- [A] WO 8912115 A1 19891214 - OSPREY METALS LTD [GB]
- [A] US 4770718 A 19880913 - VERHOEVEN JOHN D [US], et al
- [A] US 4911353 A 19900327 - DEAKIN DAVID [US]
- [A] EP 0151511 A1 19850814 - NAT RES DEV [GB], et al
- [A] US 4512384 A 19850423 - SENDZIMIR TADEUSZ [US]
- [A] EP 0340152 A1 19891102 - MANNESMANN AG [DE]
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0852976 A1 19980715; EP 0852976 B1 20030813; DE 69724089 D1 20030918; DE 69724089 T2 20040603; JP H10244355 A 19980914
DOCDB simple family (application)
EP 97121374 A 19971205; DE 69724089 T 19971205; JP 36193797 A 19971210