EP 3525964 A1 20190821 - SELF GENERATED PROTECTIVE ATMOSPHERE FOR LIQUID METALS
Title (en)
SELF GENERATED PROTECTIVE ATMOSPHERE FOR LIQUID METALS
Title (de)
AUTOMATISCH ERZEUGTE SCHUTZATMOSPHÄRE FÜR FLÜSSIGE METALLE
Title (fr)
ATMOSPHÈRE PROTECTRICE AUTO-GÉNÉRÉE POUR MÉTAUX LIQUIDES
Publication
Application
Priority
- US 201662409192 P 20161017
- US 201715693747 A 20170901
- US 2017050108 W 20170905
Abstract (en)
[origin: US2018104746A1] An improved method of manufacturing a cast part by sand casting, permanent mold casting, investment casting, lost foam casting, die casting, or centrifugal casting, or a powder metal material by water, gas, plasma, ultrasonic, or rotating disk atomization is provided. The method includes adding at least one additive to a melted metal material before or during the casting or atomization process. The at least one additive forms a protective gas atmosphere surrounding the melted metal material which is at least three times greater than the volume of melt to be treated. The protective atmosphere prevents introduction or re-introduction of contaminants, such as sulfur (S) and oxygen (O2), into the material. The cast parts or atomized particles produced include at least one of the following advantages: less internal pores, less internal oxides, median circularity of at least 0.60, median roundness of at least 0.60 and increased sphericity of microstructural phases and/or constituents.
IPC 8 full level
B22D 1/00 (2006.01); B22F 9/08 (2006.01); B22F 9/10 (2006.01); C21C 7/00 (2006.01); C22C 1/04 (2006.01); C22C 33/02 (2006.01)
CPC (source: EP KR US)
B22D 1/00 (2013.01 - EP KR US); B22D 27/00 (2013.01 - EP KR US); B22F 9/08 (2013.01 - EP US); B22F 9/082 (2013.01 - EP KR US); B22F 9/10 (2013.01 - EP KR US); C21C 7/005 (2013.01 - EP KR US); C22C 1/0416 (2013.01 - EP); C22C 1/0433 (2013.01 - EP); C22C 1/045 (2013.01 - EP); C22C 1/0458 (2013.01 - EP); C22C 1/1042 (2013.01 - EP KR US); C22C 33/02 (2013.01 - EP); B22F 2009/0844 (2013.01 - EP US); C22C 1/0416 (2013.01 - US); C22C 1/0433 (2013.01 - US); C22C 1/045 (2013.01 - US); C22C 1/0458 (2013.01 - US); C22C 33/02 (2013.01 - US); C22C 37/10 (2013.01 - EP US); Y02P 10/25 (2015.11 - EP)
Citation (search report)
See references of WO 2018075152A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 2018104746 A1 20180419; CA 3040860 A1 20180426; CN 110167700 A 20190823; EP 3525964 A1 20190821; JP 2019536901 A 20191219; KR 20190096334 A 20190819; WO 2018075152 A1 20180426
DOCDB simple family (application)
US 201715693747 A 20170901; CA 3040860 A 20170905; CN 201780078116 A 20170905; EP 17768577 A 20170905; JP 2019520741 A 20170905; KR 20197014041 A 20170905; US 2017050108 W 20170905