Method for laminate forming a sand mould and a method for produc

Details Method for laminate forming a sand mould and a method for produc Method for laminate forming a sand mould and a method for produc

1996-11-07

1998-02-17

Lin, Kuang Y.

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164 15, 164 21, 264219, 264308, B22D 1300

Patent

active

057182795

ABSTRACT:
After sand of one layer is loaded into a sand layer elevator (20), a shading mask (38) is positioned above the sand, and a diffused laser beam is irradiated from a diffused laser irradiating source (16). Thereby, a predetermined range of sand under the shading mask (38) is exposed and this exposed portion is cured. This operation is repeated for a predetermined number of sand layers and cured portions are piled up to directly form a 3-D sand mould. Particularly, a diffused laser beam is used to cure a wide range of sand at a time, thereby making sand mould mass-production possible.

REFERENCES:
patent: 4247508 (1981-01-01), Housholder
patent: 5204055 (1993-04-01), Sachs et al.
patent: 5354414 (1994-10-01), Feygin
patent: 5504301 (1996-04-01), Eveland
Communication dated Aug. 7, 1997.
European Search Report for EPO Appln No. 96-11 7352 dated Jul. 1, 1997.

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