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112results about How to "No roughness" patented technology

Drill bit impregnated with diamond film and manufacturing method thereof

The invention relates to a drill bit impregnated with a diamond film and a manufacturing method thereof, belonging to the field of mechanical processing. The drill bit is formed by a steel body (1) and a working layer (2), wherein the working layer (2) comprises the chemical vapor phase deposition diamond film (4) and hard matrix material (3). The diamond film (4) is distributed in the working layer (2) according to the required form. Molding ways of the drill bit comprise one-step forming and mosaic block type two-step forming. The one-step forming relates to the sintering type hot-press diamond drill bit, and the mosaic block type two-step forming relates to the drill bit formed by firstly sintering impregnated diamond segments and then welding the sintering impregnated diamond segments on the milled steel body. The drill bit can enhance abrasive resistance, reduces cutting adhesion, ensures the roughness and effective exposure of the bottom surface of the drill bit, and has effective gauge protection, thus improving the cutting efficiency and prolonging the service life of the tool. Compared with the common diamond drill bit, the drill bit impregnated with the diamond film has the characteristics of long service life, high drilling efficiency, long working distance, low energy consumption, strong anti-sticking rock dust capacity, etc.
Owner:JILIN UNIV

Preparation method of rice bran dietary fiber

The invention relates to a preparation method of rice bran dietary fiber, which comprises the following steps that: (1) rice bran is crushed, passes through a screen which is more than or equal to 30mesh, is added with water to be stirred uniformly, and stays still for 30 to 50min; (2) the prepared water-absorbing swelling rice bran material is added with dilute hydrochloric acid, the pH value is adjusted to be 4.5 to 5.5, and then 1.0 to 1.5 percent of hot temperature resistant amylase is added to be heated to 85 to 100DEG C, and the temperature is maintained for 30 to 40min; (3) dilute sodium hydroxide or potassium hydroxide solution is added, the pH value is adjusted to be 7.5 to 8.5, 1.0 to 1.5 percent of protease with the enzyme activity more than or equal to 500U / g to be heated to 45 to 55 DEG C, and the temperature is maintained for 60 to 90min; (4) the intermediate product is pressed, filtered and washed by water; (5) diluted phosphoric acid is added in to adjust the pH value to be 5.0 to 5.5, 0.1 to 0.2 percent of cellulose is added in to be heated to 45 to 55DEG C, and the temperature is maintained for 50 to 70min; (6) 2 to 5 percent of hydrogen peroxide is added into a sealed container to be stirred for 20 to 30min; and (7) and the product is dried and crushed. The dietary fiber prepared by the invention has delicate taste without roughness, and can serve as the additive in medicine, health food, bread, biscuits, drinks and the like.
Owner:邯郸市嘉瑞生物科技有限公司

Method for producing grape skin health-care beverage

The invention relates to a method for producing grape skin health-care beverage and belongs to the technical field of beverage processing. The method comprises the following steps of: selecting and cleaning fresh grape skin serving as a raw material; adding 0.02 percent of isoVc sodium and 0.15 percent of citric acid to protect color; crushing and pulping the grape skin to prepare grape skin pulp; promoting composite enzymolysis ultrasonically; filtering by using a filtering material with 100 to 350 meshes or performing centrifugal separation at 3,000 to 5,000 r/min; mixing; performing vacuumdegassing under vacuum degree of 0.09 MPa for 20 to 25 minutes; homogenizing under 30 to 40 MPa; after performing encapsulation, performing sterilization at the temperature of between 135 and 150 DEGC for 35 to 60 seconds; cooling; performing labeling; spraying codes; and preparing the finished product after the product is inspected to be qualified. In the method, the enzymolysis reaction time is shortened by 50 percent and the enzyme adding amount is reduced by 20 percent, so that enzymolysis efficiency is improved and production cost is reduced. The processed health-care beverage has rich nutrients and good quality and is suitable for people of all ages to drink. The quality guarantee period of the beverage is more than 12 months. By the method, the grape skin is utilized at high value; waste is changed into treasure; and obvious economic, social and ecological benefits are achieved.
Owner:内蒙古云飞酒业有限公司

Large-sized optical fiber preform stretching furnace and use method thereof

The invention discloses a large-sized optical fiber preform stretching furnace and a use method thereof. The large-sized optical fiber preform stretching furnace comprises an upper sealing device, a furnace body, and a lower sealing device, an internal air purifying system and a bottom sealing device which are arranged in sequence below the furnace body, wherein a cavity and a heating mechanism are arranged inside the furnace body; an equipment cavity is communicated with hollow parts of the lower sealing device, the internal air purifying system and the bottom sealing device; and the lower sealing device and the bottom sealing device are provided with ventilation holes for introducing sealing gas. Through the arrangement of the bottom sealing device, extended, so that production of large-sized optical fiber preforms can be realized. Moreover, air extraction and air supplement operations can be performed, so that an environment inside the furnace is purified, the service life of a graphite part is prolonged, and the surface quality of the optical fiber preforms is improved. Through use of the graphite part, the service life of the stretching furnace is prolonged by 40 percent compared with an original stretching furnace, the surfaces of the produced optical fiber preforms are in good conditions, and abnormities such as coarseness and surface impurities do not appear.
Owner:JIANGSU HENGTONG PHOTOELECTRIC

Continuous-curvature airfoil profile represented on basis of four rational Bezier curves, and generation method for continuous-curvature airfoil profile

The invention discloses a continuous-curvature airfoil profile represented on the basis of four rational Bezier curves, and a generation method for the continuous-curvature airfoil profile. The front edge portion of an upper molded line and the tail edge portion of the upper molded line are represented by two rational Bezier curves, the front edge portion of a lower molded line and the tail edge portion of the lower molded line are represented by the other two rational Bezier curves, and the four rational Bezier curves are sequentially connected by adjusting the positions and the weights of control vertexes near the splicing points so that the continuous-curvature airfoil profile can be generated. Parameters in a function have clear geometrical significance, the expected airfoil profile or an expected airfoil profile family can be generated by adjusting parameter values, the curvature radius of the front edge of the airfoil profile can be controlled, the position and the curvature of the highest point of the upper molded line are matched with those of the tail portion of the airfoil profile so that the closed airfoil profile with the thick tail edge can be generated, and reverse design is achieved; the four rational Bezier curves are made to approach an existing airfoil profile by adjusting the parameter values, and therefore approximate expression of the existing airfoil profile can be obtained, and the continuous-curvature airfoil profile can be applied to forward direction aerodynamic optimization design.
Owner:BEIHANG UNIV

Roast duck and manufacturing method thereof

The invention relates to a roast duck and a manufacturing method thereof, and belongs to the technical field of food production. The roast duck and the manufacturing method thereof is characterized inthat the manufacturing method of the roast duck comprises the following steps that (1) material water is decocted; (2) skin water is prepared; (3) bulging is conducted; (4) pickling is conducted, specifically, the material water in the step (1) is added into a duck billet chest in the step (3), a duck cutting incision is seamed and tied tightly, and the duck is placed flatwise and pickled, and turned over once every half hour; (5) the dust skin is burned; (6) coloring is conducted; (7) the duck skin is air-dried; and (8) roasting is conducted, specifically, the duck cutting incision of the duck billet in the step (7) is opened, the material water in the step (1) is poured into the duck billet chest, then the duck cutting incision is seamed again, and the duck billet is placed into a baking oven to be roasted. According to the manufacturing method, the material water is adopted to conduct first step of pickling, second step of pickling of the material water and roasting of the duck areconducted simultaneously, so that the flavoring effect of the roast duck is good, flavoring is even, the roast duck is tasty, the flavor is aromatic, the color is bright, the roast duck is fresh andtender and tasty and refreshing, no obvious roughness exists, the chewiness is relatively good, and the structure of the roast duck is complete and compact and has elasticity.
Owner:北京六合坊食品有限公司
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