专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

71. 发明专利

FR2706332B1 未知
公开(公告)号：FR2706332B1
公开(公告)日：1996-10-18
申请号：FR9407059
申请日：1994-06-09
申请人： LEYBOLD DURFERRIT GMBH
发明人： WANETZKY ERWIN , HUGO FRANZ
IPC分类号： B30B9/32 , B30B11/02 , C22B1/00 , C23G5/00 , B08B7/00 , B09B3/00 , B30B9/04 , B30B15/34
摘要： A plunger charged as an electrode is received in a trough charged as a counter-electrode in order to heat material in the trough above the annealing temperature of metal material or the sintering temperature of ceramic-material. The trough and plunger are situated in a vacuum chamber separated from a condenser and pump stand by a valve. The plunger can be retracted into a cover of the chamber by a hydraulic drive on the cover. The cover, drive, and plunger are removable from the lower part of the chamber as a unit.

72. 发明专利

GB2270371B Sealed induction furnace for melting and casting materials 未知
公开(公告)号：GB2270371B
公开(公告)日：1996-06-19
申请号：GB9309478
申请日：1993-05-07
申请人： LEYBOLD DURFERRIT GMBH
发明人： HENN ALFRED
IPC分类号： F27B14/02 , F27B14/06 , F27B14/08 , F27B14/18
摘要： A crucible (9) surrounded by an induction coil (10) is housed for tilting about a first tilt axis within a gas-tight furnace chamber (2) which has a closable opening (40a) for transferring the melt (31) into a receiving vessel (36, 63). The furnace chamber (2) is in turn tiltable about a second tilt axis (A2) between a melting position and a position in which the start of the pouring of the melt is immediately imminent by an angle which corresponds to the range of the tilting angle of the crucible (9). The opening (40a) for transferring the melt is surrounded by a first sealing flange (41) which, after the tilting path of the furnace chamber (2) has been traveled, comes sealingly into contact with a second sealing flange (38, 64) of an additional gas-tight chamber (35, 61) in which the receiving vessel (36, 63) for the melt is situated.

73. 发明专利

AT134222T 未知
公开(公告)号：AT134222T
公开(公告)日：1996-02-15
申请号：AT92121129
申请日：1992-12-11
申请人： LEYBOLD DURFERRIT GMBH
发明人： MELBER ALBRECHT DR , SCHNATBAUM FRANK DIPL-ING , KYONG-TSCHONG RIE PROF DR-ING
IPC分类号： C21D1/06 , C23C8/38

74. 发明专利

ES2080416T3 未知
公开(公告)号：ES2080416T3
公开(公告)日：1996-02-01
申请号：ES92118403
申请日：1992-10-27
申请人： LEYBOLD DURFERRIT GMBH
发明人： MELBER ALBRECHT DR , MINARSKI PETER DR , PREISSER FRIEDRICH DR , ZIMMERMANN KLAUS DR
IPC分类号： C21D3/02 , C21D1/76 , C23C8/02 , C23C8/06 , C23C8/24 , C23C8/80

75. 发明专利

DE59204598D1 未知
公开(公告)号：DE59204598D1
公开(公告)日：1996-01-18
申请号：DE59204598
申请日：1992-10-27
申请人： LEYBOLD DURFERRIT GMBH
发明人： MELBER ALBRECHT DR , MINARSKI PETER DR , PREISSER FRIEDRICH DR , ZIMMERMANN KLAUS DR
IPC分类号： C21D3/02 , C21D1/76 , C23C8/02 , C23C8/06 , C23C8/24 , C23C8/80

76. 发明专利

AT117791T 未知
公开(公告)号：AT117791T
公开(公告)日：1995-02-15
申请号：AT92102167
申请日：1992-02-10
申请人： LEYBOLD DURFERRIT GMBH
发明人： PREISSER FRIEDRICH DR , MINARSKI PETER DR , HEILMANN PAUL
IPC分类号： C21D1/767 , C21D1/773 , F27B5/05 , F27B5/06 , F27B5/14 , F27B5/16 , F27B17/00 , F27D19/00
摘要： A method for the automatic control of the process and for monitoring operational safety is indicated for a vacuum thermal treatment furnace operated with hydrogen gas under excess pressure as the coolant, in particular a furnace of this kind for quenching metallic workpieces (5) heated to a high temperature. For this purpose, the housing (4) of the thermal treatment furnace is connected to respective gas inlet lines (9, 10) for admitting the coolant and the flushing gas (H2 and N2 respectively) and furthermore connected to an extraction line (17) and to a gas outlet line (11), into each of which are inserted gas sensors (24, 39, 42) which, during the quenching process, indicate the gas concentration to a central evaluation unit (41) also connected to pressure transducers (19, 20) and a gas sensor (21), which supply further signals relating to the instantaneous gas pressure prevailing in the interior of the housing (4) or the gas inlet line (10) or to the gas concentration in the furnace environment to the central evaluation unit (41), which, for its part, then sends control signals to the gas inlet and gas outlet valves (25, 30 and 18, 28 respectively) in accordance with predetermined programmes and switches the motor-fan unit (12, 13) and the heating unit (15, 15a, ...) on or off. … …

77. 发明专利

DE4418562A1 未知
公开(公告)号：DE4418562A1
公开(公告)日：1995-01-12
申请号：DE4418562
申请日：1994-05-27
申请人： LEYBOLD DURFERRIT GMBH
发明人： HUGO FRANZ , TEUSCHEL HELMUT , WANETZKY ERWIN
IPC分类号： B09B3/00 , B29B17/00 , B29B17/04 , C08J11/12 , C10B47/06 , C10B53/00 , C10B53/07 , B29B17/02
摘要： In the treatment of material comprising organic substances or provided with these substances, the material is heated to a temperature of at least 200 DEG C in a vacuum process chamber (1) at subatmospheric pressure in an inert atmosphere, the gases and vapours formed are condensed in a condensate separator (3), and the condensate is collected and recycled or disposed of. The organic substances are rubber, plastics and paints (surface coatings, lacquers, enamels, varnishes). The embrittled residues formed from these substances are comminuted, and the comminuted residues are collected and recycled or disposed of. If any metals are present in the material, the residues are separated off, collected and optionally comminuted. The process and the apparatus are preferably used for the treatment of a) electrical cables, b) solid metallic parts connected by means of rubber, c) plastic containers containing colour pigments, d) automotive steering wheels, e) painted workpiece carriers and tools, f) faultily painted metal parts, g) automobile tyres and rubber cushioning of tracked vehicles, and h) sealing elements.

78. 发明专利

DE4322463A1 Early-warning device for induction melting furnaces 未知
公开(公告)号：DE4322463A1
公开(公告)日：1995-01-12
申请号：DE4322463
申请日：1993-07-06
申请人： LEYBOLD DURFERRIT GMBH
发明人： GOY WILFRIED , NEUGEBAUER WERNER , RADEL GUENTER
IPC分类号： F27B14/06 , F27D21/00 , H05B6/06 , H05B6/24
摘要： In the case of an early-warning device for break-outs of molten metal at ceramic furnace linings of melting furnaces, especially induction melting furnaces, having a first electrode (4) arranged at the furnace lining (3) and a second electrode (7) provided at the base of the crucible, the second electrode (7) is connected to the one pole of an ohmmeter (9) via a current conductor, the other pole of ohmmeter (9) being connected to the one connection of an alternating-voltage source (8), whose other connection is in connection with the first electrode (4).

79. 发明专利

DE4320766A1 未知
公开(公告)号：DE4320766A1
公开(公告)日：1995-01-05
申请号：DE4320766
申请日：1993-06-23
申请人： LEYBOLD DURFERRIT GMBH
发明人： BLUM MATHIAS DR , CHOUDHURY ALOK DR , FELLMANN HANS-GUENTER , GOY WILFRIED , HUGO FRANZ , MUELLER FELIX , SCHWARZ WOLFGANG DR , WEISWEILER HARDY DR
IPC分类号： F27B14/18 , B22D41/14 , F27B14/06 , F27D3/15 , F27D11/06 , C22B4/00
摘要： In a melting crucible (3) a central bottom portion (27) is formed of a plurality of palisades (5) and is shaped so that the palisades together form a vessel or a pot (7) having a centrally disposed spout or outlet (8). Two independently powered induction coils (10, 11) are provided, one coil (10) externally surrounding the collar or upper part of the central bottom portion (27), and the other coil (11) externally surrounding the spout (8). The palisades (5) are separated from one another by individual gaps (6) running radially outwardly from the center, while the electromagnetic field of at least the upper coil (10) acts on the charge contained in the melting crucible through the gaps (6).

80. 发明专利

DE4319166A1 未知
公开(公告)号：DE4319166A1
公开(公告)日：1994-12-15
申请号：DE4319166
申请日：1993-06-09
申请人： LEYBOLD DURFERRIT GMBH
发明人： HUGO FRANZ , WANETZKY ERWIN
IPC分类号： B30B9/32 , B30B11/02 , C22B1/00 , C23G5/00 , B08B7/00 , H05B7/08
摘要： A plunger charged as an electrode is received in a trough charged as a counter-electrode in order to heat material in the trough above the annealing temperature of metal material or the sintering temperature of ceramic-material. The trough and plunger are situated in a vacuum chamber separated from a condenser and pump stand by a valve. The plunger can be retracted into a cover of the chamber by a hydraulic drive on the cover. The cover, drive, and plunger are removable from the lower part of the chamber as a unit.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式