Title:
METHOD OF SMOOTHING SURFACE AND PROCESS OF LOST WAX PRECISION CASTING WITH RESIN MODEL HAVING ITS SURFACE SMOOTHED BY THE METHOD
Document Type and Number:
WIPO Patent Application WO/2005/070587
Kind Code:
A1
Abstract:
When a powder-sintered laminated resin model of powdery resin fabricated according to sintering/laminating shaping technique is applied to lost wax precision casting, casting products have rough finished surfaces causing a marked drop of commercial value. Thus, there is provided a method of smoothing the porous uneven surface of powder-sintered laminated resin model, comprising a resin impregnation step of dipping the powder-sintered laminated resin model (A) in a two-pack reaction hardening type urethane resin solution (B) of 1 to 5 min pot life and 7 to 30 Pas viscosity and effecting pressure reduction so as to impregnate the surface of the resin model (A) with the two-pack reaction hardening type urethane resin solution (B) and a resin hardening step of updrawing the powder-sintered laminated resin model (A) having been impregnated with the two-pack reaction hardening type urethane resin solution (B) from the two-pack reaction hardening type urethane resin solution (B) and hardening the same.
Inventors:
Kita, Taro c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Kamata, Kazuki c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Matsumura, Minoru c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Saito, Akio c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Kikuchihara, Masato c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Kamata, Kazuki c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Matsumura, Minoru c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Saito, Akio c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Kikuchihara, Masato c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Application Number:
PCT/JP2004/000596
Publication Date:
August 04, 2005
Filing Date:
January 23, 2004
Export Citation:
Assignee:
SHONAN DESIGN CO., LTD. (11-10, Hashimotodai 3-chome Sagamihara-sh, Kanagawa 32, 22911, JP)
Kita, Taro c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Kamata, Kazuki c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Matsumura, Minoru c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Saito, Akio c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Kikuchihara, Masato c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Kita, Taro c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Kamata, Kazuki c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Matsumura, Minoru c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Saito, Akio c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
Kikuchihara, Masato c/o SHONAN DESIGN CO. LTD. (11-10, Hashimotodai 3-chome, Sagamihara-sh, Kanagawa 32, 22911, JP)
International Classes:
B22C7/02; B22C9/04; B22C9/10; B29C41/20; B29C59/00; B29C41/14; B29C67/00; (IPC1-7): B22C7/02; B22C9/04; B22C9/10; B29C41/14; B29C59/00
Attorney, Agent or Firm:
Onuki, Kazuyasu (Shineimiyamasu Building 5th floor, 8-8 Shibuya 1-chome, Shibuya-k, Tokyo 02, 15000, JP)
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