8 results about "Electrospark deposition" patented technology

The present invention discloses a process for electrospark deposition of a composite coating on the surface of a crane bearing. The process comprises the following steps: sanding the crane bearing and electrode with sandpaper until the surface roughness of the crane bearing and electrode is no greater than 2 μm; ultrasonically cleaning the crane bearing and electrode in anhydrous ethanol at room temperature to remove surface grease and impurities, and then drying them at room temperature; electrospark deposition of a transition coating on the crane bearing using a silver electrode; and electrospark deposition of a surface coating on the crane bearing using a B83 electrode. The present invention utilizes an electrospark deposition process to deposit a composite coating of silver and B83 on the surface of the crane bearing. The crane bearing after composite coating deposition exhibits low friction, strong load-bearing capacity, excellent stability, and high reliability.

The application discloses a device and method for discharging additive and subtractive materials by planetary electrodes, and relates to the technical field of electric spark deposition, which comprises a shell, a bottom end of a stirring head in a semispherical shape, a feeding cavity arranged in the stirring head, a feeding port arranged at a bottom of a side wall of the stirring head, a feeding pipe arranged at a top end of the stirring head, a first driving mechanism for driving the stirring head to rotate, the stirring head penetrating through a planetary carrier, a gap being arranged between the planetary carrier and the stirring head, an axis of the stirring head being parallel to or coinciding with an axis of the planetary carrier, the planetary carrier being arranged in the shell and being rotationally matched with the shell through a bearing, a gas feeding cavity being arranged in the planetary carrier, an air filling pipe being arranged at a top end of the planetary carrier, a second driving mechanism for driving the planetary carrier to rotate, a plurality of rotary motors being fixedly connected with the planetary carrier, a gas feeding channel and a gas outlet being arranged in each rotary electrode, and an electrode ring being fixedly arranged on an inner wall of the shell. The application can improve the compactness of a coating.

The invention relates to an electric spark deposition repairing and polishing integrated device which comprises a repairing table and a support arranged above the repairing table, the surface of the support is in transmission connection with a moving frame, the surface of the moving frame is fixedly connected with an upper sealing plate, and an inner cavity of the upper sealing plate is provided with an electric spark machine head through a transmission mechanism. The two sides of the repairing table are slidably connected with sealing structures, wherein the sealing structures and the upper sealing plate form sealing pieces. The invention relates to the technical field of electric spark deposition repair. According to the electric spark deposition repairing and polishing integrated device, efficient and energy-saving inert gas management is achieved, a dynamic sealing cavity is matched with an intelligent air exhaust assembly, layered air exhaust is achieved through density difference, air is rapidly replaced, the positive pressure environment is maintained, the inert gas dissipation amount is reduced by 50% or above, meanwhile, the air injection amount of a machine head is reduced by 30%-40%, and cost is remarkably saved.

This invention relates to the field of additive manufacturing technology and discloses a fine-grained, low-stress electrical discharge-laser-ultrasound composite additive manufacturing method. The method comprises the following steps: performing electrical discharge deposition-laser remelting-ultrasound impact cyclic additive manufacturing on a metal substrate surface to obtain the additively manufactured component. The additively manufactured component prepared by this method exhibits a compressive stress state on its surface, which is beneficial for suppressing fatigue crack initiation and propagation, significantly improving the fatigue life and service reliability of the component. Furthermore, the additively manufactured component prepared by this method possesses significant fine-grained microstructure characteristics and achieves a synergistic improvement in strength, plasticity, and toughness.

The invention relates to a method for repairing a metal anti-corrosion coating of an open rack liquefied natural gas gasifier, which comprises the following steps of: performing electric spark deposition on the metal anti-corrosion coating in a to-be-repaired area, so that the metal anti-corrosion coating is metallurgically bonded with a base body and covers the exposed base body, and the repairing of the metal anti-corrosion coating of the gasifier is completed. By means of the repairing method, the locally-falling metal coating can be quickly and efficiently repaired, metallurgical bonding of the repaired metal anti-corrosion coating and the base body is achieved, the bonding strength between the coating and the base body is improved, the service life of the overall anti-corrosion coating of the heat exchange part of the open-frame vaporizer is prolonged, the maintenance cost and time are reduced, and the service life of the open-frame vaporizer is prolonged. And the safe operation reliability of the equipment is improved.

The present invention discloses a grain boundary diffusion method of a light rare earth diffusion source based on electrospark deposition, which comprises the following steps: First, semi-densification sintering is carried out on magnetic powder to obtain a magnetic material substrate; secondly, with electrospark deposition as the coating means, a light rare earth-based alloy diffusion source is plated on the surface of the magnetic material substrate under the protection of inert gas; finally, densification sintering and tempering treatment are carried out. Electrospark deposition has little influence on the properties of the substrate, can accurately control the coating amount and coating area, and the equipment is simple; at the same time, the protection of inert gas can effectively inhibit the oxidation phenomenon of the light rare earth-based diffusion source during the coating process. The present invention effectively increases the utilization efficiency and diffusion depth of the light rare earth diffusion source, significantly reduces the production cost, and has the effects of preventing the oxidation of the light rare earth diffusion source, effectively improving the coercivity of the magnetic material substrate, enhancing the diffusion efficiency and reducing the cost.

The application belongs to the technical field of surface engineering, and discloses a preparation method of an electric spark deposition titanium carbide wear-resistant coating of an agricultural machinery wearing part and the coating. The method comprises the following steps: under the protection of argon, titanium carbide is used as an electrode to perform electric spark deposition on the surface of a base body which has been polished and cleaned, so as to obtain a titanium carbide coating. The titanium carbide coating has a small friction coefficient, high wear resistance and a certain thickness.

This invention relates to a composite self-lubricating coating for low- and medium-carbon steel materials and its preparation method. The coating comprises a wear-resistant deposited layer on the surface of the low- and medium-carbon steel material and a self-lubricating layer sprayed onto the surface of the deposited layer. The wear-resistant deposited layer is a tungsten carbide deposited layer, and the self-lubricating layer is a molybdenum disulfide self-lubricating layer. A scaly tungsten carbide deposited layer is formed on the surface of the low- and medium-carbon steel material using electrical discharge deposition (EDD) technology. Then, molybdenum disulfide is sprayed onto the tungsten carbide deposited layer using a spraying technique to form the self-lubricating layer. After baking and cooling, the composite self-lubricating layer is formed. The combination of tungsten carbide and molybdenum disulfide significantly improves the wear resistance and hardness of the material, especially in applications under abrasive wear environments, effectively extending the service life of the workpiece. Furthermore, the process provided by this invention is simple, easy to operate, has low equipment costs, and is easily achievable for large-scale mass production.