Electrolytic polishing solution and electrolytic polishing method for tungsten-based wires or sheets

Abstract

The invention discloses an electrolytic polishing solution and electrolytic polishing method for tungsten-based wires or sheets, and relates to the technical field of metal surface treatment. The electrolytic polishing solution comprises quaternary ammonium base, absolute ethyl alcohol, 2-methyl-1-hexene, sodium sulfate and water, the concentration of the quaternary ammonium base is 20-40 g / L, the concentration of the absolute ethyl alcohol is 10-50 g / L, the concentration of the 2-methyl-1-hexene is 1-5 g / L, and the concentration of the sodium sulfate is 50-100 g / L. The tungsten-based wires or sheets to be treated are placed in the electrolytic polishing solution to serve as an anode, nickel serves as a cathode, the current density of a direct-current stabilized power supply is adjusted to be 1.0-4.0 A / cm<2>, and the stirring speed is 5-40 r / s. The method has the beneficial effects that the treated tungsten-based wires are bright and flat in surface, low in roughness, good in polishing effect, free of generation of hazardous gas in the polishing process, free of heating, high in ion flowing speed, safe, environmentally friendly, controllable and efficient.

Description

technical field [0001] The invention relates to the technical field of refractory metal surface treatment, in particular to a safe, environment-friendly, controllable and efficient electrolytic polishing liquid for tungsten-based wire or sheet and an electrolytic polishing method thereof. Background technique [0002] Tungsten-based wire or sheet has the characteristics of high melting point, high strength and high hardness, and is widely used in high-tech fields such as aerospace engines and nuclear reactors. In the development and preparation process of tungsten-based wire or sheet, it is often necessary to carry out multi-pass processing such as extrusion, drawing, rolling, etc., but due to the poor plasticity and high hardness of such materials, machining is difficult and difficult to obtain The workpiece surface with relatively flat surface and low roughness. Therefore, a simple and efficient workpiece surface treatment method is urgently needed. [0003] Electropolis...

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Problems solved by technology

[0004] As Chinese patent CN200410103517 discloses a kind of electrolytic polishing method of high-precision tungsten sheet, described polishing liquid is made of NaOH, KClO 3 and K 2 CO 3 According to the ratio of 1:8:3, KClO 3 Belongs to explosive reagents, and has high requirements for transportation and storage; Chinese patent CN104060320A discloses a polishing liquid for tungsten helix electrolytic polishing, which is prepared from sodium phosphate, sodium hydroxide, glycerol and water. The electrolytic polishing liquid needs to clean the insoluble electrolytic product on the workpiece surface at regular intervals, which leads to low polishing efficiency; Chinese patent CN105887179 discloses a tungsten alloy or molybdenum alloy electrolytic polishing liquid and an electrolytic polishing method, The polishing liquid is prepared by sodium hydroxide, sodium carbonate and sodium molybdate according to the weight ratio of 35:8:1, a large amount of insoluble gas will be generated during the electropolishing process, which reduces the polishing rate, and heating is required in the electropolishing process

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