SU825310A1

SU825310A1 - Method of treating abrasive discs

Info

Publication number: SU825310A1
Application number: SU762376648A
Authority: SU
Inventors: Евгений Николаевич Ровкин; Игорь Петрович Жеребцов; Нэля Михайловна Ровкина; Вадим Петрович Лопатинский; Светлана Александровна Тузовская
Original assignee: Pyatyj G Podshipnikovyj Z; Tomsk Polt I
Priority date: 1976-06-23
Filing date: 1976-06-23
Publication date: 1981-04-30

Description

Изобретение относится к :абразивному производству, а именно к пропитке абразивных кругов.The invention relates to: abrasive production, namely, the impregnation of abrasive wheels.

Известен способ обработки абразивных кругов, при котором абразивные круги пропитывают серой. Пропитку абразивных кругов проводят расплавленной серой либо в вакууме, либо методом капиллярного поднятия.A known method of processing abrasive wheels, in which the abrasive wheels are impregnated with sulfur. The abrasive wheels are impregnated with molten sulfur either in vacuum or by capillary lifting.

Известный способ позволяет повы сить производительность труда при шлифовании, значительно уменьшить тепловыделение при шлифовании, повысить стойкость абразивного инструмента, улучшить качество обрабатываемой поверхности по сравнению с обработкой непропитанными абразивными кругами.The known method allows to increase labor productivity during grinding, significantly reduce heat generation during grinding, increase the resistance of an abrasive tool, improve the quality of the machined surface in comparison with processing with non-impregnated abrasive wheels.

Однако известный способ не позволяет обеспечить высокую изностойкость абразивных кругов и необходимую производительность их при использовании высокопроизводительных шлифовальных автоматов, предназначенных для работы с форсированными подачами и высокой скоростью шлифования . ²³ However, the known method does not allow to provide high wear resistance of the abrasive wheels and their required performance when using high-performance grinding machines designed to work with forced feeds and a high grinding speed. ²³

Цель изобретения - повышение стойкости абразивных кругов и увеличение производительности при шлифовании.The purpose of the invention is to increase the resistance of abrasive wheels and increase productivity during grinding.

Поставленная цель достигается тем, что абразивные круги, пропитанные ³θ известным способом серой, дополни‘тельно пропитывают раствором канифоли в органическом растворителе, затем подсушивают на воздухе и подвергают термообработке при 150-160°С в течение 8 ч.The goal is achieved in that the abrasive wheels impregnated with ³ θ in a known manner with sulfur are additionally impregnated with a solution of rosin in an organic solvent, then dried in air and subjected to heat treatment at 150-160 ° C for 8 hours.

Благодаря наличию серы канифоль, введенная в поры абразивного круга при пропитке, полимеризуется, что приводит к повышению стойкости. Кроме того, канифоль в свободном виде при взаимодействии с щелочной средой смазочно-охлаждающей жидкости способствует снижению тепловыделения по сравнению с абразивными кругами,, пропитанными серой.Due to the presence of sulfur, rosin, introduced into the pores of the abrasive wheel during impregnation, polymerizes, which leads to an increase in resistance. In addition, rosin in its free form when interacting with an alkaline medium of a cutting fluid helps to reduce heat generation compared to abrasive wheels impregnated with sulfur.

Пример. Абразивные круги типа ПП25*5^Х624А 16 см 18 к 5, пред варительно пропитанные известным способом серой, дополнительно пропитывают канифолью в растворе ацетона с плотностью 0,95 г/см^э в течение 2 ч на виброустройсТве (с частотой вибрации 50 Гц и амплитудой 0,2 мм) при полном погружении кругов в раствор. После этого абразивные круги подсушивают на воздухе при комнатной температуре в течение одного часа. Последующую термообработку производят при 160^вС в течение 8 ч. При этом стойкость абразивных кругов увеличивается в 2-2,2 раза при увеличении производительности на 15%. Применение предлагаемого способа обработки абразивных кругов по срав4Example. Abrasive wheels of type PP25 * 5 ^X 624A 16 cm 18 to 5, preliminarily impregnated with sulfur in a known manner, are additionally impregnated with rosin in an acetone solution with a density of 0.95 g / cm ^e for 2 hours on a vibration device (with a vibration frequency of 50 Hz and amplitude 0.2 mm) with complete immersion of the circles in the solution. After that, the abrasive wheels are dried in air at room temperature for one hour. The subsequent heat treatment is performed at ¹⁶⁰ C for 8 hours. The abrasive wheels resistance increases 2-2.2 times while increasing productivity by 15%. The application of the proposed method of processing abrasive wheels in comparison with 4

Claims

The invention relates to: abrasive production, namely the impregnation of abrasive wheels. A known method of processing abrasive wheels, in which abrasive wheels are saturated with sulfur. The impregnation of abrasive wheels is carried out with molten sulfur either in a vacuum or by the method of capillary raising. The known method allows to increase the labor productivity during grinding, to significantly reduce heat release during grinding, to increase the durability of the abrasive tool, to improve the quality of the surface to be treated in comparison with the treatment with non-impregnated abrasive wheels. However, the known method does not allow to ensure high wear resistance of abrasive wheels and their necessary performance when using high-performance automatic machines designed for working with forced feeds and high grinding speed. The purpose of the invention is to increase the durability of abrasive wheels and increase grinding performance. The goal is achieved by the fact that abrasive wheels impregnated with a known sulfur method are additionally impregnated with a solution of rosin in an organic solvent, then dried in air and subjected to heat treatment at 150-160 seconds for 8 hours. half-sized, resulting in increased durability. In addition, rosin in free form when interacting with an alkaline medium of coolant contributes to a reduction in the heat gap in comparison with abrasive circles, saturated with sulfur. Example. Abrasive wheels of type PP25 "5 6 24A 16 cm 18 to 5, previously impregnated with a known sulfur method, are additionally impregnated with rosin in an acetone solution with a density of 0.95 g / cm for 2 hours on a vibration device (with a vibration frequency of 50 Hz and amplitude 0 2 mm) with full immersion of the circles in the solution. After that, abrasive wheels are dried in air at room temperature for one hour. Subsequent heat treatment is carried out at 160 s for H. at 3. 82531, the resistance of the abrasive wheels increases 2-2.2 times with an increase in productivity of 15%. The application of the proposed method of processing abrasive wheels in comparison with the known one allows increasing the grinding productivity and increasing the durability of abrasive wheels. 04 The claims of the method of processing abrasive wheels in which they are impregnated with sulfur, characterized in that, in order to increase the productivity and durability of abrasive wheels when grinding, the circles are additionally impregnated with rosin solution.