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RU96110900A - DEVICE AND METHOD OF LASER SINTERING - Google Patents

DEVICE AND METHOD OF LASER SINTERING

Info

Publication number
RU96110900A
RU96110900A RU96110900/02A RU96110900A RU96110900A RU 96110900 A RU96110900 A RU 96110900A RU 96110900/02 A RU96110900/02 A RU 96110900/02A RU 96110900 A RU96110900 A RU 96110900A RU 96110900 A RU96110900 A RU 96110900A
Authority
RU
Russia
Prior art keywords
powder
laser beam
detector
power
temperature
Prior art date
Application number
RU96110900/02A
Other languages
Russian (ru)
Other versions
RU2141887C1 (en
Inventor
Джон А. Бенда
Эристотл Пэреско
Original Assignee
Юнайтид Текнолоджиз Копэрейшн
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 US08/139,392 external-priority patent/US5427733A/en
Application filed by Юнайтид Текнолоджиз Копэрейшн filed Critical Юнайтид Текнолоджиз Копэрейшн
Publication of RU96110900A publication Critical patent/RU96110900A/en
Application granted granted Critical
Publication of RU2141887C1 publication Critical patent/RU2141887C1/en

Links

Claims (15)

1. Устройство для лазерного спекания порошка, формирующее лазерный луч, падающий на поверхность порошка в зоне спекания, и содержащее детектор, предназначенный для определения температуры порошка в перемещающейся точке определения, отслеживаемой вблизи зоны спекания, отличающееся тем, что включает средство управления, предназначенное для регулирования мощности лазерного луча, чувствительное к сигналу из детектора, указывающему температуру порошка.1. Device for laser sintering of powder, forming a laser beam incident on the surface of the powder in the sintering zone, and containing a detector designed to determine the temperature of the powder at a moving point of determination, tracked near the sintering zone, characterized in that it includes control means for controlling laser beam power, sensitive to the signal from the detector, indicating the temperature of the powder. 2. Устройство по п.1, отличающееся тем, что средство управления содержит средство для регулирования мощности лазерного луча так, чтобы поддерживать температуру порошка на постоянном уровне. 2. The device according to claim 1, characterized in that the control means comprises means for adjusting the power of the laser beam so as to maintain the temperature of the powder at a constant level. 3. Устройство по п.1, отличающееся тем, что детектор измеряет тепловые излучения из точки детектирования. 3. The device according to claim 1, characterized in that the detector measures thermal radiation from the detection point. 4. Устройство по п.3, отличающееся тем, что содержит оптические средства для направления тепловых излучений к детектору. 4. The device according to claim 3, characterized in that it contains optical means for directing thermal radiation to the detector. 5. Устройство по п.3, отличающееся тем, что содержит средства для сканирования лазерного луча по порошку и оптические средства для направления тепловых излучений через средства для сканирования к детектору. 5. The device according to claim 3, characterized in that it contains means for scanning the laser beam through the powder and optical means for directing thermal radiation through the means for scanning to the detector. 6. Устройство по п.1, отличающееся тем, что средство управления содержит чувствительный к сигналу детектора процессор, предназначенный для формирования сигнала регулирования мощности, указывающего требуемую мощность лазерного луча. 6. The device according to claim 1, characterized in that the control means comprises a processor sensitive to the signal of the detector, designed to generate a power control signal indicating the required power of the laser beam. 7. Устройство по п.6, отличающееся тем, что средство управления содержит модулятор регулирования мощности лазерного луча, чувствительный к сигналу регулирования мощности. 7. The device according to claim 6, characterized in that the control means comprises a laser beam power control modulator that is sensitive to a power control signal. 8. Устройство по п.1, отличающееся тем, что содержит фокусирующее средство для фокусирования лазерного луча на поверхности порошка. 8. The device according to claim 1, characterized in that it contains focusing means for focusing the laser beam on the surface of the powder. 9. Способ лазерного спекания, предусматривающий направление лазерного луча на поверхность спекаемого порошка и определение температуры порошка в перемещающейся точке определения, отслеживаемой вблизи зоны спекания, отличающийся тем, что мощность лазера регулируют по температуре порошка. 9. A laser sintering method, comprising directing a laser beam onto a surface of a sintered powder and determining a temperature of the powder at a moving determination point tracked near the sintering zone, characterized in that the laser power is controlled by the temperature of the powder. 10. Способ по п. 9, отличающийся тем, что регулировка мощности лазера включает регулировку мощности лазерного луча так, чтобы поддерживать температуру порошка на постоянном уровне. 10. The method according to p. 9, characterized in that the adjustment of the laser power includes adjusting the power of the laser beam so as to maintain the temperature of the powder at a constant level. 11. Способ по п.9, отличающийся тем, что определение температуры включает измерение тепловых излучений из точки определения. 11. The method according to claim 9, characterized in that the temperature determination includes measuring thermal radiation from a point of determination. 12. Способ по п. 11, отличающийся тем, что тепловые излучения направляют к детектору. 12. The method according to p. 11, characterized in that the thermal radiation is directed to the detector. 13. Способ по п. 11, отличающийся тем, что лазерный луч сканируют по порошку и направляют тепловые излучения к детектору. 13. The method according to p. 11, characterized in that the laser beam is scanned through the powder and direct thermal radiation to the detector. 14. Способ по п. 11, отличающийся тем, что лазерный луч фокусируют на поверхности порошка. 14. The method according to p. 11, characterized in that the laser beam is focused on the surface of the powder. 15. Способ по п.9, отличающийся тем, что спекают порошок, содержащий железные частицы. 15. The method according to claim 9, characterized in that sintered powder containing iron particles.
RU96110900/02A 1993-10-20 1994-10-20 Method and apparatus for laser sintering of powder RU2141887C1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US139,392 1993-10-20
US08/139,392 US5427733A (en) 1993-10-20 1993-10-20 Method for performing temperature-controlled laser sintering
PCT/US1994/012111 WO1995011100A1 (en) 1993-10-20 1994-10-20 Temperature-controlled laser sintering

Publications (2)

Publication Number Publication Date
RU96110900A true RU96110900A (en) 1999-09-27
RU2141887C1 RU2141887C1 (en) 1999-11-27

Family

ID=22486421

Family Applications (1)

Application Number Title Priority Date Filing Date
RU96110900/02A RU2141887C1 (en) 1993-10-20 1994-10-20 Method and apparatus for laser sintering of powder

Country Status (10)

Country Link
US (2) US5427733A (en)
EP (1) EP0731743B1 (en)
JP (1) JPH09504054A (en)
KR (1) KR100304215B1 (en)
CN (1) CN1057034C (en)
CA (1) CA2174636C (en)
DE (2) DE731743T1 (en)
ES (1) ES2115986T3 (en)
RU (1) RU2141887C1 (en)
WO (1) WO1995011100A1 (en)

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