7results about How to "Strong craftsmanship" patented technology

The application provides a kind of biological organic fertilizer efficient aerobic fermentation device, it relates to organic fertilizer fermentation technical field, including: base;The base is fixed with support, the upper portion of support is hinged with baffle, and support is installed with screw rod lifting seat A and screw rod lifting seat B by bolt, and the screw rod in screw rod lifting seat A and screw rod lifting seat B is connected with the lower end of baffle by pin shaft, and the input shaft of screw rod lifting seat A is connected with the input shaft of screw rod lifting seat B with connecting rod;The application integrates stirring, oxygen supply, fungicide spraying, material conveying, waste gas treatment and other multiple functions, forms complete fermentation process system, through the collaborative work of each hydraulic rod, motor and transmission mechanism, can be flexibly adjusted according to different material characteristics and fermentation process parameters, is suitable for efficient fermentation production of various biological organic fertilizer, has strong environmental adaptability and process expandability, helps to improve the automation level and product quality stability of organic fertilizer production.

This invention discloses a machining process for precision screws, belonging to the field of mechanical manufacturing technology. It includes the following steps: S1, rough machining and forming: treating the surface of the bar stock and machining functional slot structures, followed by pre-deburring; S2, structural strengthening: heat-treating the workpiece for strengthening; S3, precision finishing: correcting the form and position tolerances of the heat-treated workpiece and precision grinding each surface; S4, quality assurance delivery: completing inspection, cleaning, and packaging. This process flow is clear, employing a logical arrangement of "forming first, then strengthening, and then fine-tuning," resulting in a workpiece with not only a high-hardness surface but also improved coaxiality of its stepped axis and thread trajectory accuracy. This significantly enhances the screw's operational stability at high speeds. Furthermore, through staged quality control and precision correction, it improves the first-pass yield of the workpiece and reduces the risk of scrap due to heat treatment deformation, possessing extremely high industrial application value.

The invention discloses a degreasing method of a silicon nitride ceramic substrate, which belongs to the field of advanced ceramic preparation, and comprises the following steps: in a silicon nitride green body pre-degassing stage, heating to 140-160 DEG C; in the silicon nitride green body pre-decomposition stage, the temperature is increased to 230-270 DEG C, and N2 is added; in the oxygenolysis and catalytic chain scission stage of the silicon nitride green body, the temperature is raised to 350-400 DEG C, and the volume ratio of N2 to O2 is 97: 3-90: 10; in the inert purification and structure relaxation stage of the silicon nitride green body, the temperature is increased to 450-600 DEG C, and N2 is added; in a silicon nitride green body cooling stage, cooling to 180-220 DEG C, and adding N2; the temperature rise rate gt of the silicon nitride green body inert purification and structure relaxation stage; the heating rate gt of the silicon nitride green body in the pre-decomposition stage; the temperature rise rate gt of the oxygenolysis and catalytic chain scission stage of the silicon nitride green body; the temperature rise rate in the oxygenolysis and catalytic chain scission stages of the silicon nitride green body is increased. According to the method, the degreasing time is shortened by 40% or above, the warping rate of the green body is reduced to be smaller than or equal to 1%, the single-stack stacking amount is increased to be larger than or equal to 30 pieces, and the production efficiency and the product quality are remarkably improved.

The invention relates to the technical field of gallium extraction, in particular to a method for extracting gallium from gallium-containing substances, which comprises the following steps: S1, adding a glycine-sodium citrate composite coordination agent into the gallium-containing materials to selectively leach out gallium, and adjusting the pH value to 8.8-9.2; s2, performing electrochemical deposition on a three-dimensional porous titanium-based PbO2 anode and a stainless steel cathode, and reducing the heavy metal into a metal elementary substance in situ by utilizing the characteristic that the reduction potential of Pb < 2 + > and Cd < 2 + > is higher than that of Ga < 3 + >, so that the concentration of the metal elementary substance is reduced to 1t; 0.1 mg / L; s3, gallium ions are specifically recognized through a Ga-IIP adsorption column, and a high-purity desorption solution is obtained through dilute sulphuric acid desorption; and S4, metal gallium is obtained through electrolytic deposition, and liquid obtained after electrolysis flows back to S1 to be recycled. Through the synergistic effect of selective complexing of the coordination agent, electrochemical in-situ heavy metal removal, ion imprinting specific adsorption and electrolyte closed-loop circulation, alkali consumption is reduced, the gallium recovery rate is high, the product purity is high, no heavy metal dangerous waste residues are generated, and the method is suitable for various gallium-containing materials such as bauxite mother liquor, lead-zinc smelting slag and coal ash.

The invention discloses conductive ink based on high-entropy alloy aerogel and a preparation method and application of the conductive ink, and relates to the technical field of functional materials and printing electronics. Wherein the high-entropy alloy aerogel has a three-dimensional communicated nano porous structure, the specific surface area is 200-500m < 2 > / g, the density is lower than 0.05 g / cm < 3 >, and the average pore size is 10-200nm. By introducing a high-entropy alloy aerogel conductive skeleton with a three-dimensional nano porous structure, high conductivity, low-temperature sinterability and excellent mechanical flexibility of the conductive ink are achieved, and the problems that existing carbon-based and metal-based conductive ink is insufficient in conductivity, high in sintering temperature or poor in oxidation resistance and the like are solved.

This invention provides an online adjustment method and system for hammering force during additive composite manufacturing, relating to the field of metal material additive manufacturing technology. The method includes: acquiring process parameters for the current layer and initiating deposition; during deposition, acquiring and preprocessing the temperature data of the current deposited layer in real time to obtain the average temperature of the target hammering area in the current deposited layer; after deposition, acquiring point cloud data and extracting the height of the target hammering area; acquiring the material yield strength at the average temperature, calculating the hammering force and hammering voltage required for the initial hammering; performing the initial hammering based on the hammering voltage, acquiring the point cloud data after hammering, and extracting the height after hammering; then calculating the actual height deformation to evaluate the current hammering effect, and then correcting or ending the current deposited layer based on the evaluation results; repeating the above operations until all deposited layers are processed. This invention provides an efficient and reliable auxiliary additive manufacturing hammering forming control scheme.

The application discloses a heat treatment process of a thermodynamic auxiliary design Cu-Ni-Fe alloy, and belongs to the technical field of copper alloy heat treatment. The application constructs a thermodynamic model of the Cu-Ni-Fe alloy through first principle calculation, accurately matches the Fe element addition amount and heat treatment process parameters based on thermodynamic calculation, and realizes accurate regulation and control of the alloy organization and performance through steps such as homogenization, solid solution, quenching, grading aging, performance feedback closed loop optimization and the like. The application solves the problems of high development trial and error cost and poor strength and plasticity matching of the traditional Cu-Ni-Fe alloy, the prepared alloy has a tensile strength greater than 1000 MPa and a total elongation at break greater than 43%, and can be widely applied in the field of ocean engineering.