148results about How to "Hard material" patented technology

The invention relates to a biodegradable implant or the like manufactured of polymer-based material and intended to be installed in tissue conditions. In the macroscopic structure of the implant two or several zones are created in a manner that the biodegradable polymer-based material has in different zones a different detaching time from the macroscopic structure under tissue conditions.

The invention discloses a soft ceramic mud and method for preparation, which is prepared by polyvinylchloride pasty resin 15-40 parts by weight, dioctyl phthalate 20-55 parts by weight, calcium carbonate 15-35 parts by weight, plasticizer 0.1-0.4 parts by weight, toner 0.5-0.15 parts by weight, and trace moisture and impurity. The invention also discloses a method for preparation, which comprises steps as follows, each component is weighed proportionally and is placed into stirrer to stir until all components doesn't display nodular powder to be kneaded together evenly and the color is uniform, the evenly stirred mud is placed in the molder to squeeze and mould. The invention provides the soft ceramic mud which is hard and fine in texture under normal temperature, low in softening temperature to soften by hand temperature, low in toasting temperature and short in time, and the toasted material is as hard as ceramic without any odor, further protecting environment.

Sintered, translucent ceramic microbeads, preferably alumina, titania, zirconia, yttria, zirconium phosphate, or yttrium aluminum garnet (YAG) are doped with one or more optically active species. The beads may be added to substances such as explosives in order to create a distinctive optical signature that identifies a manufacturer, lot number, etc. in the event of the need for forensic analysis. Because the beads have a generally spherical surface, the radius of curvature provides an additional distinguishing characteristic by which a particular sample may be identified. The beads could also be formulated into paints if needed to create distinctive optical signatures for camouflage, decoys, or other countermeasures and could also be applied as a dust to track the movement of personnel, vehicles, etc.

A sawing yarn comprises an abrasive mixture which contains a bonding resin and an abrasive material, as well as a multifilament core made of fibers which are resistant to breaking. The fibers are arranged substantially parallel to one another and are enveloped by the abrasive mixture. The bonding resin contains no polytetrafluoroethylene, and the quantity of abrasive material in the mixture gradually decreases from the surface of the abrasive yarn inward. The yarn is suitable for cutting hard and brittle materials such as single-crystal silicon.

A clamp device for connecting a high-temperature elongated component to a support comprises a first clamp mountable to the support and a second clamp for holding the elongated component. The first clamp includes a clamp holder for holding the second clamp and is made of a non-heat-resistant hard plastic material. The second clamp includes a holder for holding the elongated component and is made of a heat-resistant hard plastic material. Preferably, the outer peripheral surface of the second clamp is covered by a layer of vibration-resistant elastic plastic material that prevents transmission of vibrations between an elongated component, such as a heater pipe, and a support, such as an under floor of an automobile.

An end mill having a plurality of teeth configured for both roughing and semi-finishing applications, the teeth being alternated with a plurality of flutes. At least one tooth of the plurality of cutting teeth is a serrated tooth formed with serrations along a relief surface thereof and at least one other tooth is free of serrations. Each tooth of the plurality of cutting teeth includes an actual internal cutting angle formed at an intersection of a rake cutting sub-surface and a relief surface. The actual internal cutting angle of each tooth has a greater value than an imaginary internal cutting angle formed at an intersection of imaginary extension lines of a rake recessed sub-surface and a relief surface of the same tooth.

The invention discloses a ship flange integration propulsion device. The ship flange integration propulsion device comprises a motor stator assembly, a motor rotor assembly, a propeller assembly, a guide tube, a rear guide cover, a front guide cover, a first water lubricated bearing, a second water lubricated bearing, an axle, a rear propeller hub cap, a front propeller hub cap, front guide cover connecting plates, rear guide cover connecting plates, a front end cover, a rear end cover and a fiber reinforced polymer sleeve, wherein the front end cover, the rear end cover and the fiber reinforced polymer sleeve are used for sealing the stator assembly, a closed space is formed among the stator assembly, the guide tube, the front end cover, the rear end cover and the fiber reinforced polymer sleeve, and the closed space is filled with epoxy resin. A static sealing structure is formed between the motor stator assembly and the guide tube, the sealing effect is good, and the technical problem that in the prior art, seawater may enter a stator can be effectively solved. In addition, due to the fact that a flange structure mode is adopted, paddles transmit hydrodynamic load at paddle tip conveniently; meanwhile, tip vortex is avoided, and the propulsive efficiency is further improved.

A planarization composition is set forth in accordance with an embodiment of the invention. The composition comprises spherical silica particles having a weight average particle diameter which falls within the range from about 0.03mu to about 2mu and is monodisperse in that at least about 90 weight percent of the particles have a variation in particle diameter from the average particle diameter of no more than about ±20%. A liquid carrier comprising up to 20 weight percent ROH, and an amine hydroxide which is NR4OH or NR2NR3OH, where each R is HCH3, CH2CH3, C3H7 or C4H9, in the amount of 0.1 to 10 weight percent; an oxidizer which is in the amount from about 0.5% to 15% weight percent; an acid stabilizer for adjusting the pH to fall within a range from about 7.0 to about 0.5; and the remainder is water. The invention also relates to a thinning, polishing and planarizing apparatus and to a method for carrying out the thinning, polishing and planarizing operation.

A cutting tool for cutting a hard brittle material is formed from a light-transmittable material through which laser light can pass and is provided with a rake angle, the laser light is propagated through the cutting tool, the cutting tool and the hard brittle material are brought into contact with each other, the laser light is incident to at least a contact part where the cutting tool and the hard brittle material are in contact with each other and a part with the rake angle, the laser light except for Fresnel reflection light on an end surface of the cutting tool is incident to the hard brittle material through the contact part and the rake angle part to soften the hard brittle material, and the softened hard brittle material is cut.

The invention relates to a rapid product remodeling method, a mold and a rapid product molding method. The rapid product remodeling method comprises the following steps of: fixing a product, namely fixing a prototype of the product on a bottom plate, and coating a demolding agent; manufacturing a surrounding mold, namely surrounding a rubber plate at the periphery of the prototype of the product; pouring glue and curing, namely pouring the glue in the surrounding mold to cover the prototype of the product and curing; manufacturing a sleeve mold, namely removing the rubber plate after the glue is cured, and manufacturing the sleeve mold outside a rubber mold through gypsum; and cutting the product, namely removing the sleeve mold, taking the rubber mold down from the bottom plate, cutting the rubber mold along a preset water gap position to take the prototype of the product out, and thus obtaining the rubber mold and the sleeve mold of the product. The process is simple and easy to learn and has extremely low cost, precise products can be manufactured, are made of hard materials and are difficult to deform, the method is suitable for manufacturing hand plate models and artware, and the problems of incapability of unifying cost, time and products of medium/small-scale production are solved.

The invention discloses a grouting system and a grouting method used for composite lining structure backfill and grouting.The grouting system comprises a one-way non-return suction cup, a one-way non-return grouting pipe, a water-stopping ring, a sealing plug and a connection pipe, wherein the one-way non-return suction cup is composed of a grouting disc and a non-return hole; the one-way non-return grouting pipe comprises a grouting pipe first end and a grouting pipe second end, a one-way valve is arranged at the grouting pipe first end, and the grouting pipe first end is communicated with a grout inlet of the grouting disc through a screw thread; the water-stopping ring is located on the outer wall of the middle of the one-way non-return grouting pipe; the sealing plug is connected with the grouting pipe second end through a screw thread; the connection pipe comprises a first end and a second end; the first end of the connection pipe is connected with the grouting pipe second end are connected through a screw thread, and the second end of the connection pipe is used for being connected with grouting equipment.The water-stopping ring is additionally arranged on the middle of the grouting pipe, and the water-stopping effect of a contact face between the outer wall of the pipe and a secondary lining structure can be effectively improved.The one-way non-return suction cup is arranged at the tail end of the one-way non-return grouting pipe, repeated grouting can be achieved, and the defect that a traditional grouting system cannot achieve repeated grouting is overcome.

The invention discloses a power generation shoe. The power generation shoe is used for solving the problems of complex structure, low power generation efficiency and discomfort in wearing of an existing power generation shoe. The power generation shoe comprises a nanometer friction generator used for converting mechanical energy into electric energy and an electrical storage device connected with the nanometer friction generator and used for storing the electric energy generated by the nanometer friction generator.

The invention discloses an ice-crack-shaped polished crystal tile comprising a ceramic tile blank, a coloured glaze layer, an ice crack layer and a transparent frit layer, wherein the coloured glaze layer comprises the following components in percentage by mass: printing glaze, glaze pigment, kaolin, methylcellulose and sodium tripolyphosphate; the ice crack layer is made of ice flower crystals with crystal glaze as the main material. The ice-crack-shaped polished crystal tile is manufactured sequentially through the steps: manufacturing a flower net; blending coloured glaze; pushing-printing the coloured glaze and ice flower crystal powder; pushing-printing frit particles; firing; and polishing. According to the invention, a crystal effect liked by people is integrated into the transparent frit layer of the polished crystal tile to form a snowflake-like natural, clean and varied embedded crystal effect, so that the tile with the novel technology has stronger decorative performance; the manufacturing method of the ice-crack-shaped polished crystal tile is simple and rapid, capable of realizing large-batch mechanical production under the condition of no great change of the original equipment, extremely simple in operation and capable of realizing flexible production for tiles with different deigned styles.

A connector having a compact engagement structure providing a high retaining force is provided. A shoulder is provided on an inner wall of a housing for storing a contact. The shoulder is inclined so that a distal end thereof projects toward a first end of the housing with respect to a proximal end thereof. An engaging piece which engages the shoulder is provided on an engaging portion of a contact body. An inner edge of a distal end of the engaging piece is chamfered. The contact is inserted into a storage chamber of the housing from a second end of the housing, and the engaging piece smoothly lifts from the distal end of the shoulder to the proximal end. Accordingly, the contact is retained by the housing with a high retaining force.

The present invention is directed to improved screen printing squeegee blades, which include a first end, a second end, a top portion for receipt by a blade holder, a bottom portion adapted for contacting the screen of a screen printing press along at least one printing edge, a front face, a back surface, and a buckle control channel formed in either the front face or the back surface.

The invention relates to a compound wood-bamboo energy-absorbing and damping support structure, belonging to construction field. The support structure, applicable on wooden buildings, is made of wood and bamboo and comprises an energy-absorbing bamboo plate, wooden connecting pieces, and a wooden slanting support pole. The upper end and the lower end of the energy-absorbing bamboo plate are respectively connected with the wooden connecting pieces, and the wooden connecting piece at the lower end is also connected with the wooden slanting support pole. The support structure is respectively connected with upper and lower girders of a wooden frame of the building through the wooden connecting piece at the upper end and the wooden slanting support pole, and is fixed and installed in the wooden frame. The support structure is installed in the wooden frame which demands shock resistance and is simple in connection with the main body of the wooden frame, convenient to construct and reliable in force transmission and is simple to replace and maintain if being damaged in an earthquake. The support structure can be used to reduce earthquake impact on small wooden buildings to help small wooden buildings to avoid and minimize damages in earthquakes.

The invention relates to multi-cutting-edge shears, comprising a front wall board and a rear wall board which are mutually separated. The multi-cutting-edge shears are characterized in that two guide ways are parallelly and compartmentally arranged between the front wall board and the rear wall board, a slip block which can reciprocate along a two-guide ways-restrained horizontal direction is restrained between the two guide ways, a moving-blade row with clipboards is arranged on the slip block, a static-blade row with a plurality of clipboards is arranged on one of the guide ways, a hydraulic cylinder is fixed outside the front wall board, the cylinder lever of the hydraulic cylinder is directly connected with the slip block by passing through the front wall board so as to push the slip block and the moving-blade row to move, and the clipboards on the moving-blade row slip with regard to the clipboards on the static-blade row in a misaligned way so as to form a shearing force. The shearing can be carried out as follows: a plurality of strip shaped metal plates are arranged after the strip shaped plow grooves of the two blade rows, and the moving-blade row is driven by the slip block to reciprocate with regard to the static-blade row so as to form the shearing force and shear the strip shaped metal plates. The shearing has no waste material and no pollution to the environment.

The invention relates to the technical field of building materials and particularly relates to a treatment method for an antique-imitating face of marble of sedimentary rock attribute. The method comprises the following steps: corroding the surface of a marble block of sedimentary rock attribute twice; and alternately using coarse flower antique-imitating water and fine flower antique-imitating water on the surface of the block according to primary and secondary corrosion so as to enhance the antique-imitating effect of surface treatment of the marble block. Therefore, the block is of more natural color and closer to antique-imitating odor.