发明申请
US20070204967A1 Method of Smoothing Surface and Process of Lost Wax Precious Casting with Resin Model Having Its Surface Smoothing by the Method 审中-公开
通过方法使其表面平滑的树脂模型的表面和失蜡铸造过程的平滑方法

Method of Smoothing Surface and Process of Lost Wax Precious Casting with Resin Model Having Its Surface Smoothing by the Method
摘要:
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 surface causing a marked drop of commercial value. Thus, there is provided a method for 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) with work time of 1 to 5 minutes and viscosity of 7 to 30 Pas 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.
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