KR100650118B1 - 레이저 피닝에 의한 금속의 외형 형성 - Google Patents
레이저 피닝에 의한 금속의 외형 형성 Download PDFInfo
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- KR100650118B1 KR100650118B1 KR1020027000662A KR20027000662A KR100650118B1 KR 100650118 B1 KR100650118 B1 KR 100650118B1 KR 1020027000662 A KR1020027000662 A KR 1020027000662A KR 20027000662 A KR20027000662 A KR 20027000662A KR 100650118 B1 KR100650118 B1 KR 100650118B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/18—Working by laser beam, e.g. welding, cutting or boring using absorbing layers on the workpiece, e.g. for marking or protecting purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/20—Bending sheet metal, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/06—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/356—Working by laser beam, e.g. welding, cutting or boring for surface treatment by shock processing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
- C21D10/005—Modifying the physical properties by methods other than heat treatment or deformation by laser shock processing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2221/00—Treating localised areas of an article
Abstract
Description
Claims (26)
- 형성할 금속 가공품을 제공하고, 소망하는 형태가 형성될 때까지 상기 금속 가공품의 표면에 레이저 유도 압축 응력을 발생시키며, 피닝 공정 동안에 기계 굴곡 모멘트(mechanical bending moment)를 이용함으로써 상기 금속 가공품에 생성된 굴곡의 량을 증가시키는 것을 포함하는 것으로 구성된, 금속에 형태 및 외형을 형성하는 방법.
- 제 1 항에 있어서, 레이저 유도 압축 응력을 발생시키는 단계는, 상기 금속 가공품의 각각의 영역에 인가될 레이저 에너지, 레이저 펄스 풋프린트, 레이저 펄스 오버랩, 펄스 지속 및 펄스의 수를 선택하여, 상기 금속 가공품의 상기 각각의 국부 영역에 인가될 압축 응력의 강도 및 깊이를 제어하는 것을 더 포함하는 것으로 구성되는 방법.
- 제 2 항에 있어서, 레이저 에너지를 선택하는 단계는 펄스당 10 J 내지 100 J의 범위내에서 레이저 에너지를 선택하는 것을 포함하는 것으로 구성되는 방법.
- 제 2 항에 있어서, 펄스 지속을 선택하는 단계는 10 ns 내지 20 ns의 범위내에서 펄스 지속을 선택하는 것을 포함하는 것으로 구성되는 방법.
- 제 4 항에 있어서, 상기 펄스는 1 ns 이하의 라이싱 엣지(rising edge)를 포함하는 것으로 구성되는 방법.
- 제 1 항에 있어서, 레이저 유도 압축 응력을 발생시키는 단계는 레이저광을 흡수하는 물질의 층으로 상기 가공품을 도포하는 것을 포함하는 것으로 구성되는 방법.
- 제 2 항에 있어서, 상기 금속 가공품상에 스폿 크기(spot size)로 상기 레이저의 근접 장(near field)을 영상화하는 것을 더 포함하는 것으로 구성되는 방법.
- 제 2 항에 있어서, 상기 금속 가공품의 표면에 60 내지 200 J/㎠의 에너지 흐름을 제공하도록 상기 레이저의 근접 장을 스폿 크기로 영상화는 것을 더 포함하는 것으로 구성되는 방법.
- 제 6 항에 있어서, 상기 물질이 플라스틱을 포함하는 것으로 구성되는 방법.
- 제 9 항에 있어서, 상기 플라스틱이 폴리비닐 아세테이트 플라스틱 및 폴리비닐 클로라이드 플라스틱으로 이루어진 군에서 선택되는 방법.
- 제 10 항에 있어서, 상기 플라스틱이 대략 200 ㎛ 두께인 방법.
- 제 6 항에 있어서, 레이저 유도 압축 응력을 발생시키는 단계는, 상기 물질 상에 박막의 수층을 흘려보내고 상기 박막 수층이 충진층(tamping layer)으로 작용하는 것을 더 포함하는 것으로 구성되는 방법.
- 제 12 항에 있어서, 상기 박막 수층이 대략 1㎜ 두께인 방법.
- 제 1 항에 있어서, 레이저 유도 압축 응력을 발생시키는 단계는, 래스트 스캔 방식(raster scan fashion)으로 레이저 펄스를 상기 금속 가공품의 표면에 연속적으로 인가하고, 압축 응력이 상기 표면상에 유도되며, 그로써 상기 압축 응력이 상기 금속 가공품의 상층의 변형을 발생시켜 상기 금속 가공품에 만곡(curvature)을 생성하는 것을 포함하는 것으로 구성되는 방법.
- 제 1 항에 있어서, 레이저 유도 압축 응력을 발생시키는 단계는, 원치않는 만곡을 가진 금속 가공품의 오목한 쪽에 압축 응력을 선택적으로 인가하여 부품을 체계적으로 곧게 하는 것(straighten)을 포함하는 것으로 구성되는 방법.
- 삭제
- 제 1 항에 있어서, 이차원 영역에 펄스를 선택적으로 인가하고 각각의 스폿 에 인가된 펄스의 수와 각각의 펄스의 강도를 조절함으로써, 이차원내 핀포밍(peenforming)을 제어하는 것을 더 포함하는 것으로 구성되는 방법.
- 제 1 항에 있어서, 펄스를 이차원 영역에 선택적으로 인가하고 각 스폿에 인가된 펄스의 수와 각 펄스의 강도를 조절하며, 오목하게 되는 표면에 보상 펄스(compensating pulse)를 위치시키고, 성분이 곡선의 형태로 변함에 따라 부품내에 발생하는 증가적인 기계 관성 모멘트(increasing mechanical moment of inertia)를 이용함으로써, 이차원으로 핀포밍(peenforming)을 조절하는 것을 더 포함하는 것으로 구성되는 방법.
- 제 1 항에 있어서, 레이저 유도 압축 응력을 발생시키는 단계는, 상기 금속 가공품의 표면에 원치않는 인장 응력(tensile stress)을 유도하지 않으면서 소망하는 형태가 형성될 때까지, 상기 금속 가공품의 표면에 레이저 유도 압축 응력을 발생시키는 것을 포함하는 방법.
- 일련의 레이저 펄스상의 각 레이저 펄스가 펄스당 10 J 내지 100 J의 에너지를 가지며, 상기 각 레이저 펄스가 10 ns 내지 20 ns의 펄스 지속(pulse duration)과 1 ns 이하의 라이싱 엣지(rising edge)를 가지는, 일련의 레이저 펄스를 생산할 수 있는 레이저 시스템;금속 가공품에 고정되게 부착되며 광을 흡수하는 물질의 층;상기 물질 층상에 흐르는 물의 박막층; 및상기 금속 가공품의 표면에 원치않는 인장 응력을 유도하지 않으면서 소망하는 형태가 형성될 때까지, 상기 일련의 레이저 펄스가 상기 금속 가공품의 표면에 압축 응력을 발생시키게 되는, 상기 물질 층상에 스폿 크기(spot size)로 상기 각 레이저 펄스의 근접 장(near field)을 영상화하는 수단;을 포함하는 것으로 구성된 금속 가공품에 형태 및 외형을 형성하는 장치.
- 제 20 항에 있어서, 상기 각각의 레이저 펄스의 근접 장을 영상화하는 상기 수단은, 상기 금속 가공품의 표면에 60 내지 200 J/㎠의 에너지 흐름을 제공하는 스폿 사이즈로 상기 각각의 레이저 펄스를 영상화하는 장치.
- 제 20 항에 있어서, 상기 물질은 플라스틱으로 구성되는 장치.
- 제 22 항에 있어서, 상기 플라스틱은 폴리비닐 아세테이트 또는 폴리비닐 클로라이드 플라스틱으로 구성되는 장치.
- 제 23 항에 있어서, 상기 ABS 플라스틱은 대략 200 ㎛의 두께를 가지는 장치.
- 제 20 항에 있어서, 상기 박막 수층이 대략 1 ㎜의 두께를 가지는 장치.
- 제 20 항에 있어서, 압축 응력이 조사된 표면상에 유도되고, 그로써 상기 압축 응력은 금속 가공품의 상층의 변형(strain)을 발생시키고 상기 금속 가공품에 만곡을 생성하게 되는, 상기 금속 가공품의 표면에 래스터 스캔 방식으로 레이저 펄스를 연속적으로 인가하는 수단을 더 포함하는 것으로 구성된 장치.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14459499P | 1999-07-19 | 1999-07-19 | |
US60/144,594 | 1999-07-19 |
Publications (2)
Publication Number | Publication Date |
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KR20020016001A KR20020016001A (ko) | 2002-03-02 |
KR100650118B1 true KR100650118B1 (ko) | 2006-11-27 |
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Application Number | Title | Priority Date | Filing Date |
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KR1020027000662A KR100650118B1 (ko) | 1999-07-19 | 2000-06-26 | 레이저 피닝에 의한 금속의 외형 형성 |
Country Status (13)
Country | Link |
---|---|
US (1) | US6410884B1 (ko) |
EP (2) | EP1212472B1 (ko) |
JP (2) | JP4215981B2 (ko) |
KR (1) | KR100650118B1 (ko) |
CN (1) | CN1228460C (ko) |
AT (2) | ATE312950T1 (ko) |
AU (1) | AU1323901A (ko) |
CA (1) | CA2379959C (ko) |
DE (2) | DE60044856D1 (ko) |
ES (2) | ES2253271T3 (ko) |
PL (1) | PL195102B1 (ko) |
RU (1) | RU2228234C2 (ko) |
WO (1) | WO2001005549A2 (ko) |
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- 2000-06-26 ES ES00975148T patent/ES2253271T3/es not_active Expired - Lifetime
- 2000-06-26 KR KR1020027000662A patent/KR100650118B1/ko active IP Right Grant
- 2000-06-26 PL PL00354627A patent/PL195102B1/pl unknown
- 2000-06-26 EP EP00975148A patent/EP1212472B1/en not_active Expired - Lifetime
- 2000-06-26 DE DE60044856T patent/DE60044856D1/de not_active Expired - Lifetime
- 2000-06-26 DE DE60024840T patent/DE60024840T2/de not_active Expired - Lifetime
- 2000-06-26 RU RU2002104019/02A patent/RU2228234C2/ru active
- 2000-06-26 AU AU13239/01A patent/AU1323901A/en not_active Abandoned
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- 2000-06-26 CN CNB008104271A patent/CN1228460C/zh not_active Expired - Lifetime
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ES2253271T3 (es) | 2006-06-01 |
PL195102B1 (pl) | 2007-08-31 |
US6410884B1 (en) | 2002-06-25 |
KR20020016001A (ko) | 2002-03-02 |
CA2379959A1 (en) | 2001-01-25 |
CA2379959C (en) | 2011-06-07 |
EP1627929A1 (en) | 2006-02-22 |
EP1212472A2 (en) | 2002-06-12 |
ATE312950T1 (de) | 2005-12-15 |
ES2356461T3 (es) | 2011-04-08 |
JP2003504212A (ja) | 2003-02-04 |
DE60044856D1 (de) | 2010-09-30 |
CN1228460C (zh) | 2005-11-23 |
JP2007175777A (ja) | 2007-07-12 |
AU1323901A (en) | 2001-02-05 |
WO2001005549A3 (en) | 2001-08-16 |
JP5000323B2 (ja) | 2012-08-15 |
JP4215981B2 (ja) | 2009-01-28 |
EP1627929B1 (en) | 2010-08-18 |
WO2001005549A2 (en) | 2001-01-25 |
EP1212472B1 (en) | 2005-12-14 |
ATE478160T1 (de) | 2010-09-15 |
PL354627A1 (en) | 2004-02-09 |
DE60024840T2 (de) | 2006-08-31 |
CN1370244A (zh) | 2002-09-18 |
RU2228234C2 (ru) | 2004-05-10 |
DE60024840D1 (de) | 2006-01-19 |
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