关键词: 钛合金, 射流电解铣削加工, 扫描路径, 腔体结构

Abstract: The β-type titanium alloy TB11 exhibits broad application prospects in fields such as biomedicine and aerospace. Jet electrochemical milling has significant theoretical advantages in the high-efficiency,high-quality,and low-cost machining of micro-sized and small components made of difficult-to-cut materials like titanium alloys. To achieve high-efficiency and high-quality machining of TB11 titanium alloy cavity structures,based on the mixed aqueous solution of 8 % NaCl + 2 % NaNO₃, a scanning path strategy for jet electrochemical milling of TB11 titanium alloy cavities was proposed. Experimental studies were conducted to investigate the effects of machining voltage,scanning speed,electrode gap,feed depth,and feed frequency on machining efficiency and dimensional accuracy. Finally,under the parameters of a machining voltage of 40 V,a scanning speed of 3 mm/min,an electrode span of 1.575 mm,a feed depth of 0.3 mm and a number of 4 feed passes,a cavity structure with dimensions of 11 078.4 μm×11 039.8 μm×1 316.5 μm and good surface flatness was machined.

Key words: titanium alloy, jet electrochemical milling, scanning path, cavity structure