30results about How to "Solve process bottlenecks" patented technology

The present invention provides an epitaxial structure of Ga-face group III nitride, its active device, and the method for fabricating the same. The epitaxial structure of Ga-face AlGaN / GaN comprises a substrate, an i-GaN (C-doped) layer on the substrate, an i-Al(y)GaN buffer layer on the i-GaN (C-doped) layer, an i-GaN channel layer on the i-Al(y)GaN buffer layer, and an i-Al(x)GaN layer on the i-GaN channel layer, where x=0.1-0.3 and y=0.05-0.75. By using the p-GaN inverted trapezoidal gate or anode structure in device design, the 2DEG in the epitaxial structure of Ga-face group III nitride below the p-GaN inverted trapezoidal structure will be depleted, and thus fabricating p-GaN gate enhancement-mode (E-mode) AlGaN / GaN high electron mobility transistors (HEMTs), p-GaN anode AlGaN / GaN Schottky barrier diodes (SBDs), or hybrid devices.

The invention relates to the field of manufacturing three-dimensionally changed special-shaped castings through electroslag smelting casting, in particular to a method and device for manufacturing a three-dimensionally changed special-shaped casting through electroslag smelting casting. Electroslag smelting casting is used for completing secondary refining purification and casting near-net formingof consumable electrode materials. The method for manufacturing the three-dimensionally changed special-shaped casting through electroslag smelting casting comprises the specific processes that (1) acasting blank crystallizer adopts a combined structural form or a split type structural form; and (2) consumable electrodes in the smelting casting process are composed of two parts, namely the guiding electrode and the supplementary electrodes; the guiding electrode is followed and fixed relative to the crystallizer and internally provided with guiding channels; the supplementary electrodes aremovable and are arranged in the guiding channels; and the working form of the electrodes in the smelting casting process is as follows: the supplementary electrodes are continuously supplemented to the molten electroslag position through the guiding channels, and thus the smelting casting process is completed. Therefore, the method and device for manufacturing the three-dimensionally changed special-shaped casting through electroslag smelting casting is mainly suitable for casting of the three-dimensionally changed special-shaped casting.

The invention relates to a group III / nitride epitaxial structure, an active element and a manufacturing method thereof. It includes a substrate; a gallium nitride high resistance layer on the substrate; a gallium aluminum nitride buffer layer on the gallium nitride high resistance layer; a gallium nitride channel layer on the gallium aluminum nitride buffer layer an aluminum gallium nitride barrier layer on the gallium nitride channel layer; a fluorine ion structure in the aluminum gallium nitride barrier layer; and a first gate insulating dielectric layer on the fluorine ion structure. The gallium aluminum nitride buffer layer is to block the defect electrons of the buffer layer from entering the channel layer and thus reduce the current collapse effect; the gallium nitride enhanced aluminum gallium nitride / gallium nitride high-speed electron mobility transistor, hybrid Schottky barrier diodes or hybrid device-enhanced AlGaN / GaN high-speed electron mobility transistors.

The invention provides a chitosan oligosaccharide oral liquid and a preparation method thereof. The oligochitosan oral liquid comprises 25-40 parts of oligochitosan, 1-3 parts of flavoring agent, 2-4 parts of preservative and 1.5-2 parts of stabilizer. The chitosan oligosaccharide oral liquid of the invention obviously improves the stability of the chitosan oligosaccharide liquid preparation and improves the mouthfeel of the chitosan oligosaccharide. The chitosan oligosaccharide oral liquid of the invention has good stability, ideal taste and remarkable slimming effect.

The invention provides a cold heading opening and closing die of an automobile double-flange special-shaped work piece. The die comprises a punch part and a die making part, and is characterized in that the punch part comprises a punch casing, a punch spring, a punch ejector sleeve, a punch head and a spring sleeve; the die making part comprises a die casing, an opening and closing die flap, an opening and closing die casing, an opening and closing die opening pin, an opening and closing die opening spring, a synchronous retaining pin, an opening and closing die ejector pin, an opening and closing die casing die flap cushion block, a die making ejector sleeve, a die making plunger, a die making plunger rear spring and a three-wire set. The die is reasonable in design, greatly improves the operating efficiency, reduces the production cost, ensures that two flanges are formed by impacting at one step, has continuous and automatic production capacity, and solves technical bottlenecks in the prior art.

Provided are a micro-tension wire feeding device (3) and an automatic bridge wire welding system with same. The micro-tension wire feeding device (3) comprises a shell (300), and a tension rod (301), a wire passing wheel (304), a clamping member (305) and a tension wheel (302) which are arranged on the shell (300), and a damper in transmission connection with the tension wheel (302), wherein one end of the tension rod (301) is connected to the shell (300), and the other end thereof is provided with a pulley (306). The automatic bridge wire welding system comprises a micro-tension wire feeding device (3) and a bridge wire positioning device (4), wherein the micro-tension wire feeding device (3) feeds a bridge wire (96) into the bridge wire positioning device (4).

An expansion device and an expansion method, the device comprises a base and a moving frame, a telescopic mechanism is arranged in the base, a telescopic end of the telescopic mechanism and an end away from the telescopic end are provided with rotating components, and a side wall of the base is provided with a rotating assembly A sliding hole through which the component passes, a sliding slot matched with the rotating component is arranged on the moving frame, and a push plate component is arranged on the side of the moving frame away from the base. The device can amplify the thrust to meet the requirements of technical indicators.