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Sharpening stone PETROGRAD, 153*15*15mm, 4000 grit



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870 p (13.38) out of stock

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Абразивные водные камни. Зернистость: 150, 360, 500, 800, 1000,1500 и 2000, 4000. Размер 15х15х153мм. Абразивное зерно - карбид кремния. Связка - керамика.  Твёрдость I обеспечивает минимальный износ камня при работе. При заточке не перегревается сталь. Не требует использования масла. Перед использованием замочить в воде на 2-10 мин. Используются для заточки и задания скосов.

 Высокую производительность заточки, уступающую только алмазу, обеспечивает использование абразивных зёрен из карбида кремния, отличающихся остротой и хрупкостью. Высокая твёрдость карбидкремниевых шлифматериалов позволяет уверенно обрабатывать не только углеродистые стали, но и твёрдые сплавы, что невозможно на камнях из электрокорундовых порошков. Кроме производительности стоит отметить необыкновенные тактильные ощущения при заточке инструмента. Камни быстро дают суспензию и производят очень приятный звук.
Водные камни ПЕТРОГРАДЪ отличаются высокой производительностью и геометрией в состоянии поставки.
В характеристике водного камня указаны: первая буква - твердость (I,J - мягкий, K - средний); зернистость по японскому стандарту JIS R6001-1987 - 150 (80 мкм), 360 (34 мкм), 500 (24 мкм), 1000 (12 мкм), 2000 (6 мкм) и материал -  карбид кремния (С- зеленый, В-черный). Сравнение стандартов FEPA, JIS и ГОСТ:
 
наборы 150 360 500 1000 1500 2000
Набор заточной ПЕТРОГРАДЪ N3     + +   +
Набор заточной ПЕТРОГРАДЪ N4 + + + + + +
 Производство - сделано в России.

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