EP 2263811 A1 20101222 - ALUMINUM ALLOY PLATE AND PROCESS FOR PRODUCING THE SAME
Title (en)
ALUMINUM ALLOY PLATE AND PROCESS FOR PRODUCING THE SAME
Title (de)
PLATTE AUS EINER ALUMINIUMLEGIERUNG UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
TÔLE D'ALLIAGE D'ALUMINIUM ET SON PROCÉDÉ DE PRODUCTION
Publication
Application
Priority
- JP 2009056089 W 20090326
- JP 2008085283 A 20080328
Abstract (en)
An aluminum alloy plate is provided which is suitable for use as members for apparatuses relating to semiconductors. The alloy plate is satisfactory in plate thickness precision and flatness and can be inhibited from having surface defects. Also provided is a process for producing the plate. An aluminum alloy comprising given components is melted (melting step), and hydrogen gas and inclusions are removed therefrom (hydrogen gas removal step and filtration step) . This melt is cast into an ingot (casting step). According to need, the ingot is homogenized by a heat treatment (soaking step). This ingot is hot-rolled to a given thickness (hot-rolling step), cut (cutting step), and finished by smoothening the surfaces (smoothening step) . According to need, the plate may be subjected to straightening (straightening step) and a heat treatment, e.g., annealing (annealing step). The aluminum alloy plate obtained has a surface flatness of 0.2 mm or less per m of rolling-direction length and has fluctuations in plate thickness within ±0.5% of a desired plate thickness.
IPC 8 full level
B21B 45/00 (2006.01); C22F 1/04 (2006.01)
CPC (source: EP)
C22B 21/06 (2013.01); C22B 21/066 (2013.01); C22C 21/02 (2013.01); C22C 21/06 (2013.01); C22C 21/08 (2013.01); C22C 21/10 (2013.01); C22F 1/04 (2013.01); C22F 1/047 (2013.01); C22F 1/05 (2013.01); B21B 2003/001 (2013.01)
Designated contracting state (EPC)
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 SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2263811 A1 20101222; EP 2263811 A4 20110504; CN 101959625 A 20110126; JP 2009256782 A 20091105; JP 4410835 B2 20100203; KR 101251235 B1 20130408; KR 20100116698 A 20101101; TW 201006578 A 20100216; TW I355301 B 20120101; WO 2009119724 A1 20091001
DOCDB simple family (application)
EP 09726074 A 20090326; CN 200980106340 A 20090326; JP 2009048470 A 20090302; JP 2009056089 W 20090326; KR 20107021535 A 20090326; TW 98110134 A 20090327