Abstract
The use of anti-corrosion protection is necessary to extend the service life of agricultural equipment; bitumen compounds can traditionally be used for this purpose. The effectiveness of compositions based on a bitumen primer, into which white spirit solvent and a corrosion inhibitor were additionally introduced in an amount of 5 wt. %: CO-FFA, paraffin, Emulgin, has been studied. Studies have shown that the bitumen primer is frost-resistant, and the thickness of its coatings increases as expected when several layers are applied. Corrosion tests were carried out in a thermal and moisture chamber G-4, in a solution of 0.5 M NaCl and in a natural atmosphere (full-scale bench studies). According to the results of tests in the G-4 thermal and moisture chamber, all compositions, both in the presence of an inhibitor and without it, almost completely protect the steel surface. Corrosion test data in 0.5 M NaCl showed that the effectiveness of the bitumen primer is 75%, and the addition of paraffin, Emulgin or KO-SZhK to the additive increases the protective effect to 98, 94, 87%, respectively. The composition with the addition of paraffin turned out to be the most effective according to the results of full-scale bench tests (Z = 93%), as evidenced by the appearance of the plates after the experiment. It is recommended that production tests be carried out using the latest formulation.
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