| 摘要 |
FIELD: etching solutions and methods for stamping articles of aluminum, titanium, alloy steel, possibly in radio engineering, instrument making air craft manufacture industry branches and other branches of national economy for applying marks characterizing articles. ^ SUBSTANCE: solution contains bismuth nitrite, 25 - 35 g; nitric acid, 5 - 15 g; deionized water, up to 100 g. Method comprises steps of applying etching solution on articles and subjecting them to electrochemical stamping for 3 - 5 s at temperature of environment. ^ EFFECT: etching solution and stamping method suitable for obtaining on articles strict pattern that may be quickly appeared and not be erased. ^ 2 cl, 3 ex |
