DE69133266T2 - Verfahren zur Herstellung eines Strangpressmatrizeinsatzes - Google Patents

Verfahren zur Herstellung eines Strangpressmatrizeinsatzes

Info

Publication number
DE69133266T2
DE69133266T2 DE69133266T DE69133266T DE69133266T2 DE 69133266 T2 DE69133266 T2 DE 69133266T2 DE 69133266 T DE69133266 T DE 69133266T DE 69133266 T DE69133266 T DE 69133266T DE 69133266 T2 DE69133266 T2 DE 69133266T2
Authority
DE
Germany
Prior art keywords
producing
extrusion die
die insert
insert
extrusion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69133266T
Other languages
English (en)
Other versions
DE69133266D1 (de
Inventor
Ronald H Winston
Necip Alev
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harry Winston SA
Original Assignee
Harry Winston SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/595,861 external-priority patent/US5149938A/en
Application filed by Harry Winston SA filed Critical Harry Winston SA
Application granted granted Critical
Publication of DE69133266D1 publication Critical patent/DE69133266D1/de
Publication of DE69133266T2 publication Critical patent/DE69133266T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44BMACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B7/00Machines, apparatus or hand tools for branding, e.g. using radiant energy such as laser beams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/066Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28DWORKING STONE OR STONE-LIKE MATERIALS
    • B28D5/00Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/24Ablative recording, e.g. by burning marks; Spark recording
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/30Organic material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/50Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
DE69133266T 1990-10-11 1991-10-09 Verfahren zur Herstellung eines Strangpressmatrizeinsatzes Expired - Fee Related DE69133266T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/595,861 US5149938A (en) 1990-10-11 1990-10-11 Methods for producing indicia on diamonds
US07/770,446 US5410125A (en) 1990-10-11 1991-10-08 Methods for producing indicia on diamonds

Publications (2)

Publication Number Publication Date
DE69133266D1 DE69133266D1 (de) 2003-06-26
DE69133266T2 true DE69133266T2 (de) 2003-11-27

Family

ID=27082389

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69125386T Expired - Fee Related DE69125386T2 (de) 1990-10-11 1991-10-09 Verfahren zum beschriften von diamanten
DE69133266T Expired - Fee Related DE69133266T2 (de) 1990-10-11 1991-10-09 Verfahren zur Herstellung eines Strangpressmatrizeinsatzes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69125386T Expired - Fee Related DE69125386T2 (de) 1990-10-11 1991-10-09 Verfahren zum beschriften von diamanten

Country Status (21)

Country Link
US (2) US5410125A (de)
EP (2) EP0749799B1 (de)
JP (1) JP2587762B2 (de)
KR (1) KR970003632B1 (de)
CN (1) CN1040955C (de)
AR (1) AR246700A1 (de)
AT (2) ATE150681T1 (de)
AU (1) AU664837B2 (de)
BR (1) BR9106972A (de)
CA (1) CA2093216C (de)
DE (2) DE69125386T2 (de)
DK (1) DK0552321T3 (de)
ES (1) ES2100341T3 (de)
FI (2) FI107790B (de)
GR (1) GR3023904T3 (de)
IL (3) IL117966A (de)
MX (1) MX174029B (de)
NO (1) NO307131B1 (de)
NZ (1) NZ240197A (de)
RU (1) RU2102231C1 (de)
WO (1) WO1992009876A2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015206004A1 (de) * 2015-04-02 2016-10-06 Siemens Aktiengesellschaft Vorrichtung und Verfahren zur Formung eines Langpulslasers und Verfahren zur Herstellung eines geformten Lochs

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0640797A (ja) * 1992-04-23 1994-02-15 Sumitomo Electric Ind Ltd ダイヤモンドの加工方法
US6489589B1 (en) * 1994-02-07 2002-12-03 Board Of Regents, University Of Nebraska-Lincoln Femtosecond laser utilization methods and apparatus and method for producing nanoparticles
US6037015A (en) * 1994-10-25 2000-03-14 Dos Santo Simoes; Fernando Antonio Method for coloring pieces of rocks by laser rays
US5632914A (en) * 1995-05-24 1997-05-27 Davidson Textron Inc. Motor vehicle air bag cover having a skin with a virtually invisible tear seam formed by miniature holes
GB9514558D0 (en) * 1995-07-17 1995-09-13 Gersan Ets Marking diamond
US5932119A (en) * 1996-01-05 1999-08-03 Lazare Kaplan International, Inc. Laser marking system
CN1063378C (zh) * 1996-02-14 2001-03-21 浙江大学 一步法加工硅111晶锭参考面的方法及设备
IL124592A (en) 1997-05-23 2002-07-25 Gersan Ets Method of marking a gemstone or diamond
GB9710738D0 (en) * 1997-05-23 1997-07-16 Gersan Ets Diamond marking
US5983238A (en) * 1997-12-26 1999-11-09 Diamond Id Gemstons identification tracking and recovery system
DE19857828C2 (de) * 1998-12-05 2003-06-26 Auergesellschaft Gmbh Elektrochemischer amperometrischer Festelektrolyt-Sensor zur Messung von Schwefelwasserstoff
US6450402B1 (en) 1999-05-05 2002-09-17 T.I.D. (The Identifying Diamond) Inc. Identification device
US6308891B1 (en) 1999-05-05 2001-10-30 T.I.D. (The Identifying Diamond) Inc. Jewelry identification
AU6057900A (en) * 1999-07-22 2001-02-13 Robotic Vision Systems, Inc. Apparatuses and methods for applying an indelible and contrasting pattern onto acarrier
BE1013110A3 (fr) * 1999-11-08 2001-09-04 Hakoune Maurice Remi Procede de traitement d'une pierre precieuse.
GB2357737A (en) * 1999-12-27 2001-07-04 Yasuhira Mori Digitally marking a gemstone using a laser
US6483073B2 (en) * 2000-02-18 2002-11-19 David Benderly Laser marking system and method
ATE429869T1 (de) 2000-05-11 2009-05-15 Nobel Biocare Ab Pseudo-ätzung von einem mit diamantähnlichem kohlenstoff überzogenen dentalen osteotom
US6593543B2 (en) * 2000-07-20 2003-07-15 David Benderly Gemstone marking system and method
US6884961B1 (en) 2000-08-24 2005-04-26 Uc Laser Ltd. Intravolume diffractive optical elements
IL138347A (en) * 2000-09-08 2003-09-17 Sarin Technologies Ltd Laser marking on diamonds
US6660964B1 (en) * 2000-09-22 2003-12-09 David Benderly Optical modification of laser beam cross section in object marking systems
KR100400441B1 (ko) * 2000-10-18 2003-10-01 엘지전자 주식회사 자외선 레이저 빔에 대한 유리의 마킹 장치 및 그 방법
US6713715B2 (en) 2001-01-16 2004-03-30 Potomac Photonics, Inc. Method and system for laser marking a gemstone
KR20020064548A (ko) * 2001-02-02 2002-08-09 엘지전자주식회사 레이저빔을 이용한 대형유리의 마킹방법
GB0103881D0 (en) * 2001-02-16 2001-04-04 Gersan Ets E-beam marking
EP1391841A4 (de) * 2001-04-26 2004-07-28 Valinmark Inc Verfahren zum herstellen und visualisieren einer optisch unsichtbaren markierung
US20040112087A1 (en) * 2001-07-28 2004-06-17 Bishop John L. Method and article of manufacture for identifying and tracking rough gemstones
GB0119327D0 (en) 2001-08-08 2001-10-03 Johnson Matthey Plc Catalyst
KR20030017119A (ko) * 2001-08-24 2003-03-03 송오성 자수정의 레이저 마킹 방법
US20030071021A1 (en) * 2001-10-17 2003-04-17 Danog Properties & Investments Ltd. Automatic marking of diamond girdles using a laser
GB0130540D0 (en) * 2001-12-20 2002-02-06 Boles Julian Method for displaying information
US6624385B2 (en) 2001-12-21 2003-09-23 Eastman Kodak Company Method for marking gemstones with a unique micro discrete indicia
US20040089642A1 (en) * 2002-01-15 2004-05-13 Christensen C. Paul Method and system for laser marking a gemstone
JP3559827B2 (ja) * 2002-05-24 2004-09-02 独立行政法人理化学研究所 透明材料内部の処理方法およびその装置
US20030120613A1 (en) * 2003-01-28 2003-06-26 Jayant Neogi Customizing objects and materials with digital identifiers
DE10310293A1 (de) * 2003-03-10 2004-09-23 Robert Bosch Gmbh Vorrichtung zum Laserbohren
FR2858750B1 (fr) * 2003-08-12 2005-10-14 Jean Marie Tanaroa Colombani Marquage des nucleus destines a la production de perles de culture
US20050274144A1 (en) * 2004-06-09 2005-12-15 Goughnour Roy R Multiplet jewelry product and method of manufacture
US7284396B2 (en) * 2005-03-01 2007-10-23 International Gemstone Registry Inc. Method and system for laser marking in the volume of gemstones such as diamonds
US20060210820A1 (en) * 2005-03-16 2006-09-21 Rutstein Jeffrey S Trophy and method of making same
AT501990B1 (de) * 2005-06-09 2007-03-15 Swarovski & Co Markierter körper aus transparentem material
TWI410538B (zh) * 2005-11-15 2013-10-01 Carnegie Inst Of Washington 建基於以快速生長速率製造之單晶cvd鑽石的新穎鑽石的用途/應用
US20070209390A1 (en) * 2006-03-06 2007-09-13 Jack Malinowski Multiplet gemstones with directly printed embedded translucent images
US8319145B2 (en) * 2006-07-10 2012-11-27 Lazare Kaplan International, Inc. System and method for gemstone micro-inscription
US20080257871A1 (en) * 2007-04-20 2008-10-23 Leiser Judson M Ablation device
US20100055022A1 (en) * 2008-05-09 2010-03-04 Apollo Diamond Gemstone Corporation Diamond identifier
WO2011097498A2 (en) * 2010-02-04 2011-08-11 Malinowski, Jack Sapphire coated gemstone
US9023461B2 (en) * 2010-10-21 2015-05-05 Electro Scientific Industries, Inc. Apparatus for optically laser marking articles
GB2490143B (en) * 2011-04-20 2013-03-13 Rolls Royce Plc Method of manufacturing a component
CN102357740A (zh) * 2011-11-11 2012-02-22 广东海洋大学 激光处理珍珠表面的方法及其装置
CA2912955C (en) 2013-05-30 2019-12-31 Goldway Technology Limited Method of marking material and system therefore, and material marked according to same method
SG10201609555YA (en) * 2013-08-12 2017-01-27 Caratell Pte Ltd Method and system for certification and verification of gemstones
SG11201602743TA (en) 2013-10-11 2016-05-30 Chow Tai Fook Jewellery Co Ltd Method of providing markings to precious stones including gemstones and diamonds, and markings and marked precious stones marked according to such a method
RU2556177C1 (ru) * 2014-01-09 2015-07-10 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет геосистем и технологий" (СГУГиТ) Способ сублимационного лазерного профилирования или сверления прозрачных подложек
FR3016440B1 (fr) * 2014-01-10 2017-06-09 Univ Claude Bernard Lyon Procede de marquage de la nacre
RU2582181C1 (ru) * 2015-02-11 2016-04-20 федеральное государственное автономное образовательное учреждение высшего образования "Южный федеральный университет" (Южный федеральный университет) Способ лазерного управляемого термораскалывания сапфировых пластин
US10821549B2 (en) 2017-04-28 2020-11-03 Opulent Luxuries, LLC Customized pieces and method of making customized pieces from semi-precious gemstones
US20200164469A1 (en) * 2017-05-15 2020-05-28 The Trustees Of The University Of Pennsylvania Systems and methods for laser cleaving diamonds
EP3672756B1 (de) * 2017-08-22 2023-06-14 Diamtech Ltd. System und verfahren zur erzeugung einer vorbestimmten struktur aus einer diamantmasse
CN108098165A (zh) * 2017-12-13 2018-06-01 深圳市晶特智造科技有限公司 激光打标方法
GB2581172B (en) * 2019-02-06 2022-01-05 Opsydia Ltd Laser machining inside materials
GB2594553B (en) * 2019-02-06 2022-05-18 Opsydia Ltd Diamond gemstone
RU2720100C1 (ru) * 2019-03-26 2020-04-24 Акционерная Компания "АЛРОСА" (публичное акционерное общество) (АК "АЛРОСА" (ПАО)) Способ создания и детектирования оптически проницаемого изображения внутри алмаза и системы для детектирования (варианты)
EP4028226A4 (de) * 2019-07-02 2023-06-07 Master Dynamic Limited Verfahren zur markierung eines festkörpermaterials, nach diesem verfahren hergestellte markierungen und nach diesem verfahren markierte festkörpermaterialien
DE102020202641A1 (de) * 2020-03-02 2021-09-02 Trumpf Gmbh + Co. Kg Verfahren und System zum additiven Herstellen eines Diamanten sowie Diamant
CN111687601A (zh) * 2020-06-12 2020-09-22 深圳鸳鸯金楼珠宝股份有限公司 一种同胚钻溯源加工工艺
CN112289172B (zh) * 2020-09-30 2022-08-16 北京德弦科技有限公司 宝石的数据标识加工方法
TWI814173B (zh) * 2020-12-14 2023-09-01 香港商金展科技有限公司 在多個寶石的外表面形成可識別標記的方法和系統,以及根據這種方法標記的寶石

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2293100A (en) * 1939-11-02 1942-08-18 Baumgold Joseph Art of and means for engraving or cutting substantially invisible marks or the like in diamonds and other articles
US3114966A (en) * 1961-02-24 1963-12-24 Felmada S A Process of manufacture of spinnerets, particularly for spinning and extruding synthetic textiles, and a spinneret obtained by this process
US3527198A (en) * 1966-03-26 1970-09-08 Tokyo Shibaura Electric Co Method and apparatus for working diamonds by means of laser light beam
FR2297143A1 (fr) * 1975-01-09 1976-08-06 Anvar Procede de realisation de microgravures par faisceau laser
US3963489A (en) * 1975-04-30 1976-06-15 Western Electric Company, Inc. Method of precisely aligning pattern-defining masks
FR2394623A1 (fr) * 1977-06-14 1979-01-12 Rhone Poulenc Textile Filiere
US4534934A (en) * 1980-02-29 1985-08-13 General Electric Company Axial sweep-through process for preparing diamond wire die compacts
US4401876A (en) * 1980-05-20 1983-08-30 Martin Cooper Working gemstones
US4392476A (en) * 1980-12-23 1983-07-12 Lazare Kaplan & Sons, Inc. Method and apparatus for placing identifying indicia on the surface of precious stones including diamonds
JPS5886924A (ja) * 1981-11-18 1983-05-24 Sumitomo Electric Ind Ltd 極細穴径ダイス用ニブ
US4467172A (en) * 1983-01-03 1984-08-21 Jerry Ehrenwald Method and apparatus for laser engraving diamonds with permanent identification markings
US4510673A (en) * 1983-06-23 1985-04-16 International Business Machines Corporation Laser written chip identification method
NL8501788A (nl) * 1985-06-21 1987-01-16 Philips Nv Werkwijze voor de vervaardiging van een treksteen.
JP2606187B2 (ja) * 1985-07-10 1997-04-30 カシオ計算機株式会社 電子ゲーム装置
US4877480A (en) * 1986-08-08 1989-10-31 Digital Equipment Corporation Lithographic technique using laser for fabrication of electronic components and the like
US4842782A (en) * 1986-10-14 1989-06-27 Allergan, Inc. Manufacture of ophthalmic lenses by excimer laser
US4732867A (en) * 1986-11-03 1988-03-22 General Electric Company Method of forming alignment marks in sapphire
DD254904A1 (de) * 1986-12-17 1988-03-16 Adlershof Kabelwerk Verfahren zur bearbeitung von eingearbeiteten bohrungen in diamanten mittels laserstrahlen
DE3731398A1 (de) * 1987-09-18 1989-04-06 Zeiss Carl Fa Verfahren zum erzeugen einer kennzeichnung und/oder markierung auf einer brillenlinse
US4912268A (en) * 1988-02-26 1990-03-27 E. I. Du Pont De Nemours And Company Process for manufacture of fluoroaromatics
JP2691767B2 (ja) * 1989-03-14 1997-12-17 新日本製鐵株式会社 ファインセラミックス伸線ダイスのレーザ加工法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015206004A1 (de) * 2015-04-02 2016-10-06 Siemens Aktiengesellschaft Vorrichtung und Verfahren zur Formung eines Langpulslasers und Verfahren zur Herstellung eines geformten Lochs

Also Published As

Publication number Publication date
MX174029B (es) 1994-04-14
NZ240197A (en) 1994-07-26
FI980347A0 (fi) 1998-02-16
KR930702665A (ko) 1993-09-09
WO1992009876A2 (en) 1992-06-11
AR246700A1 (es) 1994-09-30
EP0749799A3 (de) 1997-10-15
ATE150681T1 (de) 1997-04-15
EP0552321A4 (en) 1993-08-04
GR3023904T3 (en) 1997-09-30
AU664837B2 (en) 1995-12-07
CN1061929A (zh) 1992-06-17
IL99704A0 (en) 1992-08-18
FI107790B (fi) 2001-10-15
RU2102231C1 (ru) 1998-01-20
FI931627A (fi) 1993-04-08
WO1992009876A3 (en) 1992-08-06
EP0552321B1 (de) 1997-03-26
FI931627A0 (fi) 1993-04-08
NO922299L (no) 1993-04-13
DK0552321T3 (da) 1997-10-06
AU1579892A (en) 1992-06-25
CA2093216C (en) 1997-03-11
IL117966A (en) 1997-04-15
DE69125386T2 (de) 1997-07-03
CA2093216A1 (en) 1992-04-12
JP2587762B2 (ja) 1997-03-05
ES2100341T3 (es) 1997-06-16
BR9106972A (pt) 1994-02-22
ATE240816T1 (de) 2003-06-15
NO922299D0 (no) 1992-06-11
KR970003632B1 (ko) 1997-03-20
IL99704A (en) 1997-04-15
US5410125A (en) 1995-04-25
DE69125386D1 (de) 1997-04-30
CN1040955C (zh) 1998-12-02
FI980347A (fi) 1998-02-16
EP0749799A2 (de) 1996-12-27
DE69133266D1 (de) 2003-06-26
EP0749799B1 (de) 2003-05-21
JPH06502725A (ja) 1994-03-24
IL117966A0 (en) 1996-08-04
US5573684A (en) 1996-11-12
EP0552321A1 (de) 1993-07-28
NO307131B1 (no) 2000-02-14

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