7 results about "Duralumin" patented technology

A duralumin credit card, according to an embodiment of the present invention, may comprise: a metal sheet made of metal; a first duralumin flake ink layer printed on the metal sheet by means of silkscreen printing and including duralumin flake powder; and a second duralumin flake ink layer printed on the bottom surface of the metal sheet by means of indoor screen printing and including duralumin flake powder.

The invention relates to the technical field of friction stir welding static shaft shoulder tools, in particular to a friction stir welding static shaft shoulder tool aluminum scrap cleaning device which comprises a mounting plate. And two scraping mechanisms. According to the device, the two scraping mechanisms are fixedly connected to the mounting plate, duralumin skimmings on the stirring head and the static shaft shoulder body are conveniently scraped through the two scraping mechanisms, and when the stirring head and the static shaft shoulder body move to the position between the two brushing mechanisms, the duralumin skimmings on the stirring head and the static shaft shoulder body are scraped; the two brushing mechanisms are used for conveniently brushing away aluminum skimmings in the stirring head and the static shaft shoulder body and residual aluminum skimmings on the surfaces of the stirring head and the static shaft shoulder body, then the cleaning effect on the stirring head and the static shaft shoulder body is improved, and the two scraping mechanisms and the two brushing mechanisms can be suitable for static shaft shoulder tool bodies, stirring heads and static shaft shoulder bodies of different sizes; and the practicability of the aluminum scrap cleaning device for the friction stir welding static shaft shoulder tool is improved.

The invention belongs to the technical field of aerial insulated cables, and discloses an aerial insulated cable conductor structure design method and system, and the method comprises the steps: S1, calculating a conductor compression effective cross section through a conductor unit length resistance standard which is a low resistance requirement for an L3-type duralumin wire aerial insulated cable; s2, calculating the total cross section required by a single wire before the conductor is compressed according to the extension coefficient of the aluminum wire; s3, selecting the number of monofilaments of each layer of the conductor and calculating the filament diameter of the monofilaments according to the standard requirement and the regular stranding criterion of the stranded wire; s4, calculating the outer diameter of the conductor; s5, calculating the die size of each layer of the conductor; s6, calculating a control section range after the conductor is compressed; and S7, calculating the actual cross section of the compressed conductor. According to the method, through the structured calculation and verification process, the design process is converted from empirical estimation to accurate parameterization calculation, and the accuracy and controllability of conductor structure design are remarkably improved.

The application discloses a stern shaft extraction method for checking a stern tube rear bearing, and the stern shaft and a first intermediate shaft are suspended above a duralumin plate platform in a cabin by using a chain block and an eye plate and are not interfered with main engine auxiliary equipment, a second intermediate shaft is sunk and placed on a sleeper arranged on a double-layer bottom plate, the stern shaft can be extracted from the cabin without opening a hole in a hull plate, the stern tube rear bearing can be quickly checked, space can be saved, and the stern tube rear bearing can be replaced.

The application provides a TiB 2p / Al-Mg-Si porcelain duralumin alloy, a preparation method and application thereof, the method comprises the following steps: component design; smelting: simultaneously heating and melting Al-5%TiB2 precursor and Al-3%B intermediate alloy, ultrasonic vibration treatment, heat preservation, alloying, refining, pouring; solid solution treatment; and the TiB 2p / Al-Mg-Si porcelain duralumin alloy is prepared after artificial aging treatment. Compared with the pure alloy, the TiB 2p / Al-Mg-Si porcelain duralumin alloy of the application has the peak aging region widening effect, the process window of artificial aging is widened, and the best mechanical property and electrical conductivity are obtained.

The invention belongs to the technical field of additive manufacturing, and discloses an arc fuse additive manufacturing invar steel part trajectory planning method and application, and the method comprises the following steps: partitioning the wall thickness of a target part, and planning a short edge scanning trajectory according to the parameters of the target part after partitioning, the trajectory planning method is used for carrying out arc fuse additive manufacturing on the invar steel part. According to the method, after the short edge scanning track of the target part is partitioned, the incomplete fusion defect in the printing process is further reduced while the forming rate of the invar steel part is remarkably increased, the structure is more stable, and the cost is reduced.

The invention belongs to the technical field of aluminum stranded wires, and particularly relates to a steel core high-conductivity rare earth aluminum stranded wire and a preparation method thereof. The steel core high-conductivity rare earth aluminum stranded wire is composed of a steel core and a duralumin wire stranded on the outer layer of the steel core, and the duralumin wire is prepared from the following raw materials in percentage by weight: 0.11 to 0.18 wt% of Fe, 0.15 to 0.24 wt% of Si, 0.04 to 0.15 wt% of B, 0.22 to 0.35 wt% of Cu, 0.04 to 0.08 wt% of Sm, 0.05 to 0.12 wt% of gadolinium carbide, 0.18 to 0.25 wt% of modified MXene and the balance of Al. The modified MXene is prepared by the following preparation process: adding Ti3C2TX, copper chloride, ammonium chloride, ascorbic acid and thiourea into water, and performing ultrasonic dispersion under a heating condition to obtain the modified MXene. The duralumin wire is excellent in electric conductivity and excellent in mechanical property.