Control unit for pulsed irradiation in additive manufacture
AssigneeSiemens Energy Global GmbH & Co. KG
InventorTimo Heitmann
Life of this patent
Estimating the term…
Abstract
A method for the computer-aided provision of control instructions for pulsed irradiation in the additive production of a component structure includes establishing process parameters, including a pulse frequency, a pulse width, a scan speed, and an irradiation power; defining the pulse frequency and scan speed as process constants; and determining parameter values of the pulse width and of the irradiation power from the process constants which have been defined. A corresponding computer program product, a method for bed-based additive production, and a corresponding control device are adapted for pulsed irradiation in the additive production of a component structure.
Claims20
A method for additive production of a component structure, comprising:
- a) providing, via a computer, control instructions (f, τ, v, P) for pulsed irradiation, comprising:
- i) establishing process parameters, comprising a pulse frequency (f), a pulse width (τ), a scan speed (v) and an irradiation power (P),
- ii) defining the pulse frequency (f) and scan speed (v) as process constants and defining a melt pool overlap (o) as a process constant, wherein the melt pool overlap (o) is based on parameter values of the established process parameters, and
- iii) determining parameter values of the pulse width (τ) and of the irradiation power (P) from the process constants which have been defined;
- b) executing the control instructions for the additive production of the component structure comprising generating an energy beam along an irradiation path (V) including generating consecutive pulses of the pulsed irradiation along the irradiation path (V) and generating consecutive melt pools along the irradiation path (V) wherein the consecutive melt pools have the melt pool overlap (o) along the irradiation path (V).
A method for additive production of a component structure, comprising:
- a) providing, via a computer, control instructions (f, τ, v, P) for pulsed irradiation, comprising:
- i) establishing process parameters, comprising a pulse frequency (f), a pulse width (τ), a scan speed (v) and an irradiation power (P),
- ii) defining the pulse frequency (f), the scan speed (v) as process constants which have constant values during the method, and
- iii) determining parameter values of the pulse width (τ) and of the irradiation power (P) from the constant values of the process constants which have been defined;
- b) executing the control instructions for the additive production of the component structure including generating an energy beam along an irradiation path (V) including generating consecutive pulses of the pulsed radiation along the irradiation path (V) and generating consecutive melt pools along the irradiation path (V) with the consecutive pulses, wherein the consecutive melt pools have a melt pool overlap (o) along the irradiation path (V) based on the determined parameter values of the pulse width and the irradiation power such that the melt pool overlap (o) along the irradiation path (V) is above a threshold value to achieve a homogeneous and coherent component structure.
Dependencies are inferred from the claim text.