45results about How to "Reduce temperature requirements" patented technology

The invention discloses a plug-in component technology and surface mount technology combination based PCBA (printed circuit board assembly) machining method and a PCBA. The method includes the steps: S1, attaching a plug-in component on a PCB with a surface mount bonding pad, and fixing the component which is packaged in a plug-in manner; S2, subjecting the PCB mounted with the component to automatic spot heating welding, and welding pins of the component in plug-in package on the surface mount bonding pad of the PCB. The PCB is provided with the plug-in packaged component and the surface mount bonding pad, and the pins of the plug-in packaged component are welded on the surface mount bonding pad. The advantages of plug-in technology and the surface mount technology are fused, the plug-in packaged component and the PCB with the surface mount ponding pad are utilized, and the automatic spot heating welding technology is combined, so that labor cost and material cost of PCBA machining are saved, the requirement on temperature resistance of the component is lowered, production efficiency and product percent of pass of the PCB are increased, and good social and economic benefits are gained. The method can be widely applied to various PCBA machining technologies.

The invention discloses a fully automatic release mechanism for high-temperature molten matter and its control method. The release mechanism of the invention includes a temporary storage container; the upstream of the temporary storage container is connected to a low-pressure container equipped with a melting furnace through an upstream release pipeline, and A protective gate valve and an upstream main sealing valve are sequentially provided on the upstream release pipeline from the low-pressure container to the temporary storage container; a downstream release pipeline is provided downstream of the temporary storage container, and a melt release pipe is provided on the downstream release pipeline. valve and a downstream main sealing valve, the melt release valve is arranged on a side close to the temporary storage container, and the downstream main sealing valve is arranged on a side away from the temporary storage container; the temporary storage container and its The downstream devices are all installed in the bottom high-pressure container; the temporary storage container communicates with the low-pressure container, the bottom high-pressure container and the pressure source respectively through pressure balance pipelines. The invention breaks through the difficulty of transferring high-temperature molten matter from a low-pressure environment to a high-pressure environment.

The invention provides an ion source discharging module and an operating method thereof. The ion source discharging module comprises: a ceramic tube including a part with a larger outer diameter and a part with a smaller outer diameter; a metal member disposed on the periphery of the part with a smaller outer diameter and connected with the part with a larger outer diameter of the ceramic tube; a glass tube which is disposed on the periphery of the part with a smaller outer diameter, the left of which is connected with the metal member and the right of which is connected with a quartz tube, wherein the distance between the metal member and the outer edge of the part with a smaller outer diameter and the distance between the glass tube and the outer edge of the part with a smaller outer diameter are both greater than zero; and the quartz tube comprising a part with a larger inner diameter and a part with a smaller inner diameter, wherein the end portion of the part with a larger inner diameter is connected to the right of the glass tube, and the distance between the quartz tube and the part with a smaller outer diameter is greater than zero. The ion source discharging module has good reliability and simple structure.

The invention discloses a low-temperature melting block finished glaze and a preparation method thereof. The low-temperature melting block finished glaze is prepared by uniformly mixing the following materials in parts by weight: 90-94 parts of low-temperature melting block and 6-10 parts of kaolin, wherein the low-temperature melting block comprises mineral materials, mineralizing agents and fluxing agents; the mineral materials are industrial quartz and aluminium hydroxide; the mineralizing agents are potassium carbonate, lithium carbonate and lithium fluoride; and the fluxing agents are calcium carbonate, zinc oxide, boric acid, sodium borate and red lead. In the low-temperature melting block finished glaze prepared by the invention, qualified ceramic can be glaze-fired at the temperature of 850-900 DEG C, so that the temperature resistance requirement on kiln furnace equipment is reduced, the energy consumption of a ceramic product is reduced, further the manufacturing cost is reduced and ceramic pigment generates brighter color on the ceramic product.

The invention provides a lightweight solar power generation panel and a preparation method thereof. The lightweight solar power generation panel includes a substrate, an insulating layer, a battery layer and a support layer which are sequentially stacked; the materials of the substrate include polypropylene, polychlorinated Any one or a combination of at least two of ethylene, polyethylene, polymethyl methacrylate, polycarbonate, polystyrene or acrylonitrile-butadiene-styrene copolymer. The lightweight solar power generation panel provided by the invention adopts low-density substrate material, which makes the whole solar power generation panel lighter and more portable.

The invention discloses a polluted soil medium-temperature dry screening reduction treatment system and its application, belonging to the technical field of contaminated soil reduction treatment. The system of the present invention includes a rotary dryer, a metal cylinder with a horizontal inclination angle; a heating device, composed of combustion equipment and a flue gas circulation system connected between the combustion equipment and the rotary dryer, to the The soil material in said metal cylinder of the rotary dryer provides a temperature greater than or equal to 65°C and less than 130°C. The system of the present invention is particularly effective in reducing the amount of polluted soil with high water content, large amount of clay and insignificant sieving reduction at normal temperature, or unsuitable for leaching.