10results about How to "Reduce performance variance" patented technology

The invention discloses a device and a method for preparing an easy-to-penetrate cable protection pipe, and the device and the method are applied to the technical field of cable protection pipe preparation. A cooling channel formed in the protection pipe body through the internal air cooling assembly firstly makes contact with the interior of the just-extruded high-temperature protection pipe to rapidly absorb internal heat, meanwhile, the external spraying assembly sprays cooling liquid to the outer surface of the protection pipe body to further take away the heat, and the interior and the exterior of the protection pipe body are cooled at the same time; the internal air cooling assembly directly acts on the core part of the protection pipe main body and is combined with the external spraying assembly, so that the temperature gradient is effectively reduced, cooling of all parts of the protection pipe main body is more uniform, and size deviation and performance difference caused by uneven cooling are reduced.

This utility model relates to the field of conformal coating production technology and discloses an additive dispensing device for conformal coating production. The device includes a mixing tank with three supporting legs arranged circumferentially at the bottom. A first motor is mounted on the top of the mixing tank. This additive dispensing device uses a control device to control a second motor to drive a winding device in forward and reverse rotation. The winding device winds or releases a pull rope, which in turn causes a baffle to slide inside the feed cylinder, thereby controlling the amount of additive dispensed. Simultaneously, a flow sensor monitors the additive flow rate in real time and feeds the data back to the control device. The control device controls the second motor according to a preset dispensing amount, achieving precise dispensing, significantly reducing manual operation, improving the performance stability of the conformal coating, and reducing batch-to-batch product performance differences.

The application discloses a high-strength and high-toughness Al-Ca-In series aluminum alloy low-oxygen spherical powder for additive manufacturing and a preparation method thereof, relates to the technical field of additive manufacturing powder, and comprises the following components in percentage by mass: 1.5-3.0% of magnesium, 0.15-0.60% of manganese, 1.0-2.0% of calcium, 0.06-0.25% of indium, 0.08-0.18% of zirconium and 0-0.05% of titanium, and the balance of aluminum and impurities, wherein the total oxygen is not more than 0.10%; the powder surface has a nitrogen-containing diffusion barrier layer with a thickness of 2-8 nanometers and an ultrathin oxide layer with a thickness of 0.5-2.0 nanometers in sequence, and the surface enrichment and interface capture indexes are limited; and the powder is prepared by high-temperature dissolution of manganese and zirconium, low-temperature segmented calcium addition, nitrogen-containing gas atomization and low-temperature micro-oxidation. The powder inhibits the surface migration and oxidation loss of calcium and indium, improves the component stability in recycling and forming, reduces defects and performance dispersion, and is suitable for the high-strength and high-toughness manufacturing consistency of thin-wall lattice load-bearing parts.

The invention relates to the field of alloy steel, and particularly discloses high-strength angle steel and a production process thereof. The high-strength angle steel comprises the following chemical components: C, Si, Mn, P, S, Al, Nb, V, Ti, N and Fe, wherein the ratio of (Nb mass percent / atomic weight + V mass percent / atomic weight + Ti mass percent / atomic weight) / (C mass percent / atomic weight + N mass percent / atomic weight) is 0.80-1.05; the preparation method comprises the following steps: heating a steel billet to 1000-1150 DEG C, carrying out hot rolling, and controlling the initial rolling temperature of finish rolling to 950-1000 DEG C; and then carrying out two-stage cooling: firstly, rapidly cooling to 750-800 DEG C at a speed of 15-25 DEG C / s, and then slowly cooling to 60-80 DEG C by a cooling bed in a stepping period of 4-6 s. And finally, straightening and fixed-length shearing are carried out. The high-strength angle steel has the advantages of being high in strength and good in structure uniformity.

The utility model relates to a forging cooling device, including cooling box and the net frame of placing, the top of net frame of placing is equipped with the removal part, the removal part is used for driving net frame of placing to move to the vertical axial movement of cooling box, both sides of net frame of placing are equipped with the back shape drying frame, two groups back shape drying frame can move towards net frame of placing or move away, the inboard of back shape drying frame evenly installs several nozzles, the outside of back shape drying frame installs the hot -blast machine, the air outlet end of hot -blast machine is linked together with back shape drying frame through the pipeline, sets up solenoid valve on the pipeline, can be injected airflow to forging from multi -angle through the utility model, cooperate the airflow circulation design of air hole, ensure that forging cooling and drying are even, reduce the deformation or performance difference because of the temperature uneven.

The invention relates to the technical field of battery heating, in particular to a uniform heating battery pack used in a low-temperature environment. In the prior art, non-uniform heating is easily caused by a mode of wrapping a battery cell by a conventional heating film, and the performance and the service life of the battery are influenced. In order to solve the problem, the uniform heating battery pack provided by the invention comprises a battery pack, a conductive part and a heating element, the battery pack is composed of a plurality of battery cells, and each battery cell is provided with a pole. And the conductive piece is electrically connected with the pole of the battery cell. And the heating element is thermally coupled with the conductive part, covers the surface of the conductive part and is used for heating the battery cell through the conductive part and the pole. According to the structural design, heat is quickly and uniformly transferred to each battery cell through the conductive piece and the pole, so that the problem of non-uniform heating of the battery pack in a low-temperature environment is solved, the overall performance of the battery pack is improved, the service life of the battery pack is prolonged, and meanwhile, the working efficiency and reliability of the battery pack in the low-temperature environment are improved.

The utility model relates to the technical field of roller brush, disclose a prevent side leakage type building decoration roller brush, including handle, the inside of handle is provided with adsorption mechanism, adsorption mechanism includes air pump, suction chamber and threaded block, the output fixedly connected with suction pipe of air pump, the centre of suction chamber inner top surface is fixedly connected with the delivery pipe, the inner wall screw thread cooperation of suction chamber has the collecting cylinder, the centre of threaded block upper surface is provided with the tapered groove, the outer wall screw thread cooperation of threaded block has the connecting block, the upper end of handle is provided with roll brush mechanism, roll brush mechanism includes the fixed frame, the inside of fixed frame is provided with the delivery slot. In the utility model, the building decoration roller brush is combined by multiple section structures, which makes the user more quickly corresponding disassembly and replacement of each component, thereby improving the convenience and the range of application of the roller brush, and further improving the convenience of carrying, transporting and storing the roller brush.

The embodiment of the invention provides a computing power adjustment method and system of a container, electronic equipment, a computer readable storage medium and a computer program product, and relates to the technical field of cloud computing, the method comprises the steps that the computing power satisfaction rate of the container is acquired, and the computing power satisfaction rate is used for representing the proportion between the computing power distributed to the container and the computing power required by the container; and in response to the fact that the computing power satisfaction rate does not meet the preset condition, calling a hyper-thread resource quota sensing interface of the kernel on which the container depends to adjust the computing power satisfaction rate of the container. The computing power level actually obtained by the container is measured by using the computing power satisfaction rate, the dynamic adjustment of the computing power satisfaction rate of the container is realized based on the hyper-thread resource quota perception interface, the performance fluctuation applied in the container is controlled within a certain range, the computing power obtained by the container on any node of the load water level is within a stable interval, and the computing power satisfaction rate of the container is improved. The performance difference of the containers on the host nodes of different load water levels is reduced, and the performance consistency of the containers is improved.

The present invention relates to the field of vacuum coating technology, and in particular to a rotating mechanism and a vacuum coating machine thereof. The rotating mechanism of the vacuum coating machine is used to drive the workpiece to be coated to move relative to the target surface. The workpiece to be coated has a first side and a second side arranged adjacent to each other, and the length of the first side is greater than the length of the second side; the rotating mechanism includes a driving member, a transmission unit, an active self-rotation unit and a driven self-rotation unit, and the driving member is connected to the transmission unit; the active self-rotation unit includes a first rotating shaft and a first elliptical gear, and the driven self-rotation unit includes a second rotating shaft and a second elliptical gear. The first rotating shaft cooperates with the transmission unit, the first elliptical gear is fixed to the first rotating shaft, and the second elliptical gear is fixed to the second rotating shaft and used to carry the workpiece to be coated, and the second elliptical gear is meshed with the first elliptical gear. A vacuum coating machine includes the above-mentioned rotating mechanism. The advantages of the present invention are that the deposited film layer on the outer surface of the workpiece to be coated is uniform and has no color difference, and the performance consistency is good.

The invention discloses a high-performance micro-nano composite material and a preparation method thereof, and relates to the field of nano composite materials. The preparation method comprises the following steps: mixing a carbon source and a silicon source, adding a pore-forming agent to form a porous preform, and heating by using high-power microwaves to prepare the network-shaped silicon carbide fiber. The preparation method comprises the following steps: firstly, mixing and dissolving latticed silicon carbide fibers and silicon carbide powder to form a preform, using nano zirconium dioxide as a modified material, then adding titanium dioxide gel, enabling the titanium dioxide gel to enter pores, curing and crystallizing titanium dioxide during sintering, and meanwhile, forming a layer of titanium dioxide film in the sintering process, so that the titanium dioxide film is formed; the bonding strength is increased and the material performance is improved. According to the micro-nano porous composite ceramic prepared by the method, the network-shaped silicon carbide fiber is used as a framework, the silicon carbide powder, the nano zirconium oxide and the composite titanium dioxide are connected to form a double-layer ceramic structure, a carrier is high in strength and toughness and is in three-dimensional communication, and the internal structure is stable and the performance is excellent under high impact.