Abstract: A method for making molds with curved cooling paths includes a step of obtaining a drawing of a mold by using computers and the drawing including the positions of concavities, cooling paths and reference points; a step of manufacturing the mold by way of pour casting according to the drawing so as to obtain a mold having the concavities, the cooling paths and the reference points, and a step of trimming the concavities of the mold according to the reference points and opening two ends of each of the cooling paths to obtain a final mold.

Abstract: An atomizer includes a T-shaped chamber with tapered insides and an outlet which is in communication with the chamber. A first path is located in a center area in the chamber so as to introduce molten metal therein and two second paths are introduced into the chamber so as to send inert gas into the chamber. A separator is located in the chamber and located at an outlet end of the first path. A narrow passage is defined between an inside of the outlet and the separator. The impact of the inert gas and the molten metal atomizes the metal.

Abstract: An atomizer includes a T-shaped chamber with tapered insides and an outlet which is in communication with the chamber. A first path is located in a center area in the chamber so as to introduce molten metal therein and two second paths are introduced into the chamber so as to send inert gas into the chamber. A single diamond-shaped separator is located in the chamber and located at an outlet end of the first path. A narrow passage is defined between an inside of the outlet and the separator. The impact of the inert gas and the molten metal atomizes the metal.

Abstract: A method for rapid prototyping by using linear light as sources employs DLP (Radiation Hardening Formation) or LCD, together with the portable devices and linear light source to treat the raw material in two stages. The first stage is to spread the raw material to a selected zone by nozzles or rollers and illuminating the material to let the material being processed and have physical o mechanical changes. The second stage is to use more powerful linear light source with the cooperation of the portable DMD (Digital Micromirror Device) or LCD (Liquid Crystal Display) to illuminate the material to make it have a second times of physical o mechanical changes. By the piling up the layers of the material, a complete 3-D work piece is obtained.

Abstract: A method for rapid prototyping by using plane light as sources treats the raw material by two stages. The first stage includes a step of spreading raw material onto a defined zone by nozzles and rolling the material to have a flat surface and a step of illuminating the raw materials by plane light and electronic beams to cause a first time of physical or chemical changes. The second stage includes a step of using more powerful plane light source with cooperation with portable Digital Micromirror Device (DMD) or Liquid Crystal Display (LCD) to scan the selected zones of the material to cause a second time of physical or chemical changes, and a step of stacking the 2-D images so as to obtain a solid work piece.

Abstract: A method for rapid prototyping by using plane light as sources treats the raw material by two stages. The first stage includes a step of spreading raw material onto a defined zone by nozzles and rolling the material to have a flat surface and a step of illuminating the raw materials by plane light and electronic beams to cause a first time of physical or chemical changes. The second stage includes a step of using more powerful plane light source with cooperation with portable Digital Micromirror Device (DMD) or Liquid Crystal Display (LCD) to scan the selected zones of the material to cause a second time of physical or chemical changes, and a step of stacking the 2-D images sodas to obtain a solid work piece.

Abstract: An atomizer includes a T-shaped chamber with tapered insides and an outlet which is in communication with the chamber. A first path is located in a center area in the chamber so as to introduce molten metal therein and two second paths are introduced into the chamber so as to send inert gas into the chamber. A separator is located in the chamber and located at an outlet end of the first path. A narrow passage is defined between an inside of the outlet and the separator. The impact of the inert gas and the molten metal atomizes the metal.

Abstract: A method for rapid prototyping by using linear light as sources employs DLP (Radiation Hardening Formation) or LCD, together with the portable devices and linear light source to treat the raw material in two stages. The first stage is to spread the raw material to a selected zone by nozzles or rollers and illuminating the material to let the material being processed and have physical o mechanical changes. The second stage is to use more powerful linear light source with the cooperation of the portable DMD (Digital Micromirror Device) or LCD (Liquid Crystal Display) to illuminate the material to make it have a second times of physical o mechanical changes. By the piling up the layers of the material, a complete 3-D work piece is obtained.