Thermal control of selective laser sintering via control of the

Details Thermal control of selective laser sintering via control of the Thermal control of selective laser sintering via control of the

1992-12-18

1994-10-04

Walsh, Donald P.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Sintering which includes a chemical reaction

419 47, 419 5, 21912164, 2191216, 21912185, 264 22, B22F 310, B22F 500

Patent

active

053524055

ABSTRACT:
A method and apparatus for fabricating three-dimensional objects according to the selective laser sintering process are disclosed. In order to reduce inconsistencies in structural and textural integrity, and in thermal effects that can cause distortion, methods for ensuring that overlapping laser scans are accomplished in a consistent manner relative to the thermal flow from the sintered locations are utilized. Methods are disclosed for achieving this by limiting the extent to which the laser scans object areas in the powder layers so that the time-to-return for adjacent overlapping scans is minimized; such minimization results in significantly less variation in the time-to-return overall.

REFERENCES:
patent: 4247508 (1981-01-01), Householder
patent: 4575330 (1986-03-01), Hull
patent: 4863538 (1989-08-01), Deckard
patent: 4929402 (1990-05-01), Hull
patent: 4938816 (1990-07-01), Beaman et al.
patent: 4944817 (1990-07-01), Bourell et al.
patent: 5017753 (1991-05-01), Deckard
patent: 5053090 (1991-10-01), Beaman et al.
patent: 5076869 (1991-12-01), Bourell et al.
patent: 5147587 (1992-09-01), Marcus et al.
patent: 5155322 (1992-10-01), Grube et al.
patent: 5155324 (1992-10-01), Deckard et al.
patent: 5156697 (1992-10-01), Bourell et al.
patent: 5182170 (1993-01-01), Marcus et al.

Affiliated with

Also associated with

Rating

Thermal control of selective laser sintering via control of the does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thermal control of selective laser sintering via control of the , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal control of selective laser sintering via control of the will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-579629