11results about How to "Increase density" patented technology

The present invention relates to a device and method for controlling the edge precision of a stir friction extrusion solid-phase additive deposition layer, which belongs to the field of additive manufacturing technology, and includes a hollow stirring head, which can rotate, and a through hole is arranged at the central axis thereof for filling raw materials; four split sleeves are sleeved around the hollow stirring head, and the four split sleeves can move up and down independently. The present invention restricts the side wall forming of the additive layer, suppresses the generation of flash, arc-shaped side walls and semi-cylindrical materials at both ends of the additive layer, thereby reducing the subsequent cutting amount and achieving near-net forming of the component; by restricting the flow of plasticized material to the surroundings, the additive layer at the center and the edge is made denser, and the mechanical properties of the additive layer as a whole and the side wall are improved; it can realize multi-layer additives in the vertical plane and multi-pass additives in the horizontal plane, and can also realize precise forming of the side wall without changing the device, thereby improving the flexibility of the device.

This invention discloses an acid and alkali resistant polyamide membrane and its preparation method. The method is as follows: S1: Immerse the ultrafiltration base membrane in an aqueous sodium hydroxide solution for soaking and then set aside; S2: Treat the base membrane with a mixed aqueous solution of polyamine and aziridine crosslinking agent; S3: Wet the base membrane in an organic phase solution of polyacrylamide monomer to obtain a polyamide composite membrane; S4: Immerse the prepared polyamide composite membrane in an alcoholic solution of hydroxymethyl crosslinking agent, then dry it in a forced-air drying oven, and after washing with water, obtain the acid and alkali resistant polyamide membrane. This application uses two crosslinking agents, aziridine and hydroxymethyl, which can undergo specific crosslinking reactions with the carboxyl groups inside the polyamide membrane, to directly perform dual crosslinking modification on the membrane interior and surface, without introducing other polymer materials to avoid excessive increase in membrane permeation resistance. The polyamide membrane prepared by this method has both good acid and alkali resistance and water permeability.

This aluminum powder mixture is obtained by mixing a starting material powder, which is composed of pure aluminum or an aluminum alloy, with 5% by mass to 30% by mass of an aluminum alloy powder that has a lower melting point than the pure aluminum or the aluminum alloy. The aluminum alloy powder is composed of an aluminum alloy which has a composition that contains 5% by mass to 20% by mass of at least one of Si and Cu, and 0.2% by mass to 2.0% by mass of Mg, with a balance of aluminum and unavoidable impurities. Consequently, sintering among the aluminum powders is accelerated and it is possible to obtain an aluminum sintered body that has a higher density and a high electrical conductivity as well as obtaining a high thermal conductivity.

The application provides a method for reducing thermal damage of a cooling medium and a laser processing array. The method can reduce or even avoid the formation of a thermal damage area of the laser processing, improve the processing quality, and particularly can improve the density of an array structure, and obtain a ceramic product containing a high-integration array structure.

The utility model relates to the field of rock drilling equipment, in particular to a cutting head of a heading machine. Comprising a cutting head body, the cutting head body is a circular truncated cone, and a plurality of tooth holders are arranged on the cutting head body; the cutting teeth are arranged on the tooth holders, the multiple tooth holders are sequentially arranged along the peripheral wall of the cutting head body in the shape of a spiral line, and the lead angle of the spiral line is increased from the bottom end of the cutting head body to the top end of the cutting head body; the spiral line comprises a plurality of spiral line sections which are sequentially connected from the bottom end to the top end of the cutting head body. The cutting head provided by the utility model can be used for slotting operation of an underground closed groove by the existing equipment, the circular truncated cone can meet the shape requirement of the closed groove, and the cutting teeth are arranged in a manner of increasing the lead angle from the bottom to the top of the cutting head body, so that the axial distance of the cutting teeth at the top of the cutting head is properly increased; and the pick density at the top of the cutting head is effectively improved.

The present invention discloses a paper-plastic integral cylindrical bottle compacting mechanism with radial telescopic function, which is composed of a bottle body pressing plate driving mechanism, a bottle bottom pressing plate driving mechanism, a bottle body pressing plate, and a bottle bottom pressing plate. The bottle body pressing plate driving mechanism comprises: a central shaft, a sliding sleeve, a hinge seat C, a connecting rod A, a connecting rod B, and a connecting rod G connected to each other; the bottle bottom pressing plate driving mechanism is composed of a connecting rod E, a central connecting rod, a bottle bottom driving rod, and a hinge seat D. The present invention can improve the density of paper fibers in the bottle body of the paper-plastic integral cylindrical bottle and improve the strength of the bottle body structure.

This invention discloses a brewing method for "Lanzhongyin" craft beer, possessing a unique flavor, belonging to the field of beer brewing technology. This method uses water, Australian barley malt, Australian wheat malt, and oat flakes as base ingredients, combined with liquid yeast and imported hops. It emphasizes the addition of bitter orange peel and coriander seeds as flavor modifiers. Through optimized processes such as saccharification, boiling, fermentation, and aging, the refreshing fruity aroma of bitter orange peel and the unique spiciness of coriander seeds are deeply integrated, solving the technical problems of existing craft beers having a single flavor profile and insufficient complexity. The "Lanzhongyin" craft beer brewed by this invention has a refreshing and smooth taste, combining the richness of malt, the delicate aroma of hops, and the unique complex flavor brought by bitter orange peel and coriander seeds. It has high flavor recognition, a simple and controllable process, is suitable for large-scale production, and enhances the product's market competitiveness.

The application relates to a point cloud processing method and device. The method comprises the following steps: determining a first transformation matrix corresponding to adjacent first and second point cloud frames through a particle swarm optimization algorithm; rotating and / or translating an original coordinate system of the first point cloud frame through the first transformation matrix to obtain a first coordinate system corresponding to the first point cloud frame; and superimposing first point clouds in the first point cloud frame into the second point cloud frame according to the first coordinate system, a driving speed of a device, and a time difference between the first and second point cloud frames. The scheme provided by the application can increase the density of point clouds and improve the recognition ability of a laser radar for long-distance obstacles.

The application discloses a shell reinforcing method of lithium residue-based non-burning light aggregate and the lithium residue-based non-burning light aggregate after shell reinforcing. The shell reinforcing method comprises the following steps: S1, mixing lithium smelting residue, solid waste and auxiliary materials to obtain mixed materials; S2, performing initial granulation treatment on the mixed materials to obtain green balls; S3, performing round-pot granulation treatment on the green balls to obtain shell reinforced green balls; and S4, performing curing treatment on the shell reinforced green balls to obtain the lithium residue-based non-burning light aggregate. According to the shell reinforcing method, after the green balls are obtained through initial granulation, the round-pot granulation treatment is performed, the special granulation mode is used, the outer shell of the lithium residue-based non-burning light aggregate is mechanically reinforced, the compactness of the surface of the lithium residue-based non-burning light aggregate is improved under the condition of ensuring the same bulk density, and thus the cylinder pressure strength is improved and the water absorption rate is reduced.

The utility model discloses a compact-structure dense feeding device for cup-shaped objects, which belongs to the technical field of cup-shaped object manufacture and comprises a first cup holder bedplate, and a cup holder blanking unit is mounted on the first cup holder bedplate. The cup holder blanking unit comprises a driving device and a blanking device, the first cup holder table plate is connected with the blanking device, the blanking device is connected with the driving device, and the driving device is connected with the support assembly; a support assembly used for supporting is installed on the first cup holder table plate and connected with a driving device. A measuring device used for monitoring is installed on the support assembly. Compared with the prior art, only one cup stand is placed at a time, the situation that multiple cup stands cannot be subjected to subsequent machining after being stacked is avoided, meanwhile, the distance between the feeding devices is shortened through the transmission mode of the belt wheels, the device is more compact in structure through the alternately-placed blanking guide barrels, the feeding dense degree is improved, and the feeding efficiency is improved. And the productivity efficiency is improved, and all the feeding devices are relatively independent and convenient to maintain.

The application relates to the technical field of ceramic preparation, and provides a preparation method of high-thermal-conductivity aluminum nitride ceramic, which solves the problems of relatively poor thermal conductive performance and bending strength of the aluminum nitride ceramic prepared by the prior art; the method comprises the following preparation steps: 1) raw material preparation; 2) ball milling mixing; 3) preheating reduction; and 4) hot-pressing sintering.