Method for producing laminated object
First Claim
1. A method for producing a casting mold having a forming cavity to be filled with alloy melt, comprising the steps of:
- repeating a depositing step and an irradiating step alternately so as to pile solid layers in a thickness direction to form said mold, said depositing step including depositing a sand coated with a thermosetting resin capable of forming said solid layer by receiving a laser beam to form a deposited layer, said irradiating step including irradiating said deposited layer with said laser beam to form a hardened solid layer,wherein said irradiating step further includes the operations of;
distinguishing an outer skin portion of said deposited layer from an inner portion of said deposited layer; and
emitting a thick laser beam having a large diameter to harden said inner portion of said deposited layer, and emitting a thin laser beam having a diameter smaller than said thick laser beam to harden said skin portion of said deposited layer.
1 Assignment
0 Petitions
Accused Products
Abstract
A depositing step and an irradiating step are repeated alternately so as to pile solid layers to produce a laminated mold for casting an alloy melt. In the depositing step there is formed a deposited layer of sand coated with a thermosetting resin capable of forming a solid layer upon being irradiated with a laser beam. In the irradiating step, the deposited layer is irradiated with a laser beam to form a hardened solid layer. The irradiating step includes the operations of: distinguishing an outer skin portion from an inner portion of the deposited layer, and emitting a thick laser beam having a large diameter to harden the inner portion of the deposited layer, and emitting a thin laser beam having a diameter smaller than the thick laser beam to harden the skin portion of the deposited layer.
108 Citations
16 Claims
-
1. A method for producing a casting mold having a forming cavity to be filled with alloy melt, comprising the steps of:
-
repeating a depositing step and an irradiating step alternately so as to pile solid layers in a thickness direction to form said mold, said depositing step including depositing a sand coated with a thermosetting resin capable of forming said solid layer by receiving a laser beam to form a deposited layer, said irradiating step including irradiating said deposited layer with said laser beam to form a hardened solid layer, wherein said irradiating step further includes the operations of; distinguishing an outer skin portion of said deposited layer from an inner portion of said deposited layer; and emitting a thick laser beam having a large diameter to harden said inner portion of said deposited layer, and emitting a thin laser beam having a diameter smaller than said thick laser beam to harden said skin portion of said deposited layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
Specification