1547 Каталог WIDIA 2017 Режущий инструмент Пластины Резцы Фрезы Сверла Метчики Стр.U27

Каталог Widia 2017 Металлорежущий инструмент Стр. U27 1547 ENG Lab2u

Widia Application Information T-15 HSS spade blades are recommended For providing straighter and more consistent holes with superior surface finishes than can be produced using either HSS twist drills or carbide indexable drills. When rigidity of the machine or the fixture requires a more forgiving, durable, and tougher tool; T-15 steel possesses a higher transverse rupture strength and is more impact-resistant than comparable carbide spade blades and/or carbide indexable drills. In applications requiring hole depths up through 15x to 20x diameter; pecking may be required for depths above 7x diameter for some materials. As a cost-effective alternative to carbide indexable drills since T-15 steel spade blades operate at comparable penetration rates to single-effective indexable drills in materials <35 Rc, and one spade blade holder accommodates multiple diameter blades. Spade Blade Holders Generally can accommodate a range of blade sizes up to 1.30-1.35 times the smallest blade size. It is therefore possible to cover the entire range of hole sizes with just a few spade drill holders. Contrast this with the inventories required for indexable drills and steel taper shank drills.