Device and method for evaluating the susceptibility of hot cracking in additive manufacturing
AssigneeWisconsin Alumni Research Foundation
InventorSindo Kou
Life of this patent
Estimating the term…
Abstract
A device and method are provided for evaluating the susceptibility of hot cracking in an additive manufacturing process. A first end of a substrate is interconnected to a base and one of the base and a deposition device is moved in a first direction and the second end of the substrate is pulled. A powder is dispensed at a selected rate and an energy bean having an adjustable power density is direct at the powder to melt the powder to form a material which is deposited as a layer of a material on the substrate. During the deposition process or during the deposition of the material on a subsequent substrate, one or more parameters/conditions are varied to determine the point at which hot cracking occurs during the deposition process.
Claims25
A device for evaluating the susceptibility of hot cracking in an additive manufacturing process, comprising:
- a deposition device configured to deposit a layer of a material on a substrate;
- a base in spaced relation to the deposition device and being configured to support the substrate;
- a first connection arrangement connectable to the base and adapted for interconnecting to a first end of the substrate to the base;
- a second connection arrangement slidably supported on the base and being connectable to a second end of the substrate;
- a drive mechanism operatively connected to one of the base and the deposition device and being configured to axially move the one of the base and the deposition device in a selected direction at a speed as the layer of material is being deposited on the substrate;
- and
- a puller mechanism operatively connected to the second connection arrangement, the puller mechanism pulling the second connection arrangement away from the first connection arrangement.
A method for evaluating the susceptibility of hot cracking in an additive manufacturing process, comprising the steps:
- interconnecting a first end of a substrate to a base;
- moving one of the base and a deposition device in a first direction;
- depositing a layer of a material on the substrate with the deposition device;
- pulling a second end of the substrate in a second direction;
- and evaluating the layer of material deposited on the substrate for hot cracking.
A method for evaluating the susceptibility of hot cracking in an additive manufacturing process, comprising the steps:
- providing a substrate;
- interconnecting a first end of the substrate to a base;
- moving one of the base and a deposition device in a first direction at a velocity;
- dispensing a powder at a selected rate;
- generating an energy beam having an adjustable power density, the energy beam being directable at the powder to melt the powder and form a material;
- depositing a layer of the material on the substrate;
- pulling a second end of the substrate in a second direction;
- and evaluating the layer of material deposited on the substrate for hot cracking.
Dependencies are inferred from the claim text.