| 摘要 |
<p>Method of taking off iron oxides and hydroxides from steel product surfaces, comprising the steps of treating the surfaces by the mixture of mono (alkyl, dioxyalkyl) ethers of carboxylic acids and monoalkyl ethers of sulphuric acid, in which maleic and sulphomaleic acids are used as carboxylic acids, and mono (alkyl, dioxyalkyl) ethers of maleic and sulphomaleic acids, monoalkyl ethers of sulphuric acid are included additionally with the following component ratio, mass %: Maleic acid 0.1 to 4; Sulphomaleic acid 0.3 to 10; Mono (alkyl, dioxyalkyl) ethers of sulphomaleic acid with the number of carbon atoms in the alkylic radical - one, three, four, dioxyalkylic - three 1.0 to 20; Mono (alkyl, dioxyalkyl) ethers of maleic acid with the number of carbon atoms in the alkylic radical - one, three, four, dioxyalkylic - three 0.1 to 2.5; Monoalkyl ethers of sulphuric acid with the number of carbon atoms in the alkylic radical - one, three, four 0.1 to 5.5; Water - the rest; the treatment being executed from 2 to 11 minutes at 50 to 60 °C.</p> |
