公开(公告)号：EP1337686A2

公开(公告)日：2003-08-27

申请号：EP01985345.6

申请日：2001-11-29

申请人： Schott Glas ,  CARL-ZEISS-STIFTUNGtrading as SCHOTT GLAS

发明人： OTT, Franz ,  GOHLKE, Dirk ,  WITTE, Jörg

IPC分类号： C23C30/00 ,  C03B5/167 ,  C03B40/00

CPC分类号： C03B5/1675 ,  C03B5/1672 ,  C03B17/04 ,  C03B40/00 ,  C03C3/06 ,  C03C3/083 ,  C03C3/085 ,  C03C3/087 ,  C03C3/091 ,  C03C3/093 ,  C03C3/097 ,  C03C3/105 ,  C03C3/108 ,  C03C3/112 ,  C23C30/00 ,  Y02P40/52

摘要： The invention relates to a coated metal element used for producing glass, said element having a coating on the opposite side to the glass melt that is impermeable to H2, or to H2 and O2. The invention also relates to a method for coating metal elements used for producing a glass melt and glass, according to which an insulating casing is applied to the side of the metal element to be coated, in such a way that a cavity is formed between the surface to be coated and the insulating casing, the cavity is filled with the coating material and said material is melted at a sufficiently high temperature. The invention further relates to the use of the coating that is impermeable to H2 or H2 and O2 for coating metal elements that come into contact with the glass melt, such as electrodes in distributors, melting channels and baths, pipes for conducting and conditioning glass melts, such as supply channels and Danner channels, Vello and A drawing heads, moulding tools for producing tubing and rods such as Vello pins, downdraw pins, orifice rings and Danner blowpipes, platinum double-pipes for the direct heating of floor outflows or filling organs, mixers, tube-drawing heads, feeders and refining chambers.

公开(公告)号：EP1337481A1

公开(公告)日：2003-08-27

申请号：EP01992690.6

申请日：2001-10-23

申请人： Schott Glas ,  CARL-ZEISS-STIFTUNGtrading as SCHOTT GLAS

发明人： KARETTA, Frank ,  WITTE, Jörg ,  DUCH, Klaus-Dieter ,  GOHLKE, Dirk ,  MÜNCH, Wolfgang ,  JAKWAY, Allen ,  EICHHOLZ, Rainer ,  LENTES, Frank-Thomas

IPC分类号： C03B5/225 ,  C03B5/167

CPC分类号： C03B5/2252 ,  C03B5/1672

摘要： The invention relates to a method and a device for refining a glass melt, using negative-pressure apparatus. According to the invention, the glass melt is fed to a refining bench by means of an uptake pipe and is discharged from the refining bench by means of a downpipe, a negative pressure being created over the flow of glass in the refining bench. The invention is characterised in that the uptake pipe and/or the downpipe and/or the refining bench has/have at least one component consisting of at least one refractory metal and/or of a refractory metal alloy as the glass contact material.