Electrolytic polishing liquid of tungsten alloy or molybdenum alloy and electrolytic polishing method

Abstract

The invention discloses electrolytic polishing liquid of a tungsten alloy or a molybdenum alloy. The electrolytic polishing liquid is prepared by mixing sodium hydroxide, sodium carbonate, sodium molybdate and water. In addition, the invention further discloses a method for conducting electrolytic polishing on the tungsten alloy or the molybdenum alloy through the electrolytic polishing liquid. The method includes the steps that the tungsten alloy or the molybdenum alloy is placed in the electrolytic polishing liquid to be used as an anode; stainless steel is used as a cathode; the temperature of the electrolytic polishing liquid and the voltage and current density of a direct-current stabilized power supply are regulated; and electrolytic polishing is conducted on the surface of the tungsten alloy or the molybdenum alloy. The electrolytic polishing liquid is an aqueous solution of the sodium hydroxide, the sodium carbonate and the small amount of sodium molybdate, no pollution gas is generated in the process of conducting electrolytic polishing through the electrolytic polishing liquid, and therefore safety and environment protection are achieved, no insoluble electrolytic products are generated on surfaces of workpieces, the surfaces of the workpieces do not need to be cleaned, and the polishing efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of electrolytic polishing of refractory metals, and in particular relates to a safe, environment-friendly and efficient electrolytic polishing solution of tungsten alloy or molybdenum alloy and an electrolytic polishing method. Background technique [0002] Tungsten alloy and molybdenum alloy materials are widely used in military, aerospace, nuclear industry and other high-tech fields due to their high melting point, high strength, high hardness, corrosion resistance, and compatibility with nuclear materials. During the development and preparation of such alloy materials, testing methods such as tension, shear and impact are used to characterize the mechanical properties of the material at room temperature. Machining such as cutting is difficult, and it is difficult to obtain a smooth surface with low roughness, and it is even very easy to cause cracks on the surface of the sample, so that the intrinsic perf...

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Problems solved by technology

[0005] Another example is that Chinese patent CN200410103517 discloses a method for electrolytic polishing of a high-precision tungsten sheet. The polishing solution is composed of NaOH, KClO 3 and K 2 CO 3 Prepare according to the ratio of 1:8:3, KClO 3 Explosive, dangerous defects in storage and use; Chinese patent CN104060320A discloses a polishing solution for tungsten helical wire electrolytic polishing, and the polishing solution is composed of Na 3 PO 4 120g / L, NaOH 8g / L, glycerin 15ml / L and water. This method needs to clean the insoluble electrolytic product on the surface of the workpiece every 30-50s. When a large thickness of electrolytic polishing is required to remove the The polishing efficiency is very low when there is a strained layer on the surface of the workpiece caused by machining

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