Abstract

Characteristics of organosilicon sealant of VGO-1 brand, which is employed in the preparation of glue-welded joints through contact welding are considered. Preparation conditions of glue-welded joints are given and it is determined that there is a decrease in the magnitude of welding current and an increase in the time of welding and electrode contact pressure upon welding of steel specimens of 08kp brand by the VGO-1 sealant. Structural studies of the sealant after exposure at various temperatures show that the sealant possesses high frost resistance at –30°C in the air and a satisfactory frost resistance at –50°C in the liquid. The swelling degree of the sealant after 20 days of exposure in medical ethyl alcohol is less than 4.5%.

中文翻译：

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有机硅密封胶在超低温下的抗冻性评价

摘要

考虑了VGO-1牌有机硅密封胶的特性，该胶用于通过接触焊接制备胶焊接头。给出了胶焊接头的制备条件，确定了使用VGO-1密封胶焊接08kp牌钢试件时，焊接电流幅度减小，焊接时间和电极接触压力增加。 . 密封胶在不同温度下暴露后的结构研究表明，密封胶在空气中 –30°C 具有较高的抗冻性，在液体中 –50°C 具有令人满意的抗冻性。密封胶在医用酒精中暴露20天后溶胀度小于4.5%。