这是Allen Benjamin公司最近开发的一种硬质合金丝锥。主要用于钛合金、镁、铝等材料的攻丝加工,效果十分良好。PRC丝锥采用高密度超细颗粒硬质合金制作,工具形状设计合理,加工钛合金时,摩擦系数可减少35%。专门生产飞机发动机零件的Curtis Machine公司用此种丝锥加工钛合金轴承支座,4把丝锥可加工8740个孔,加工效率和工具寿命均非高速钢丝锥可比拟。丝锥磨损 This is a recently developed Allen Benjamin carbide taps. Mainly used for titanium alloy, magnesium, aluminum and other materials tapping processing, the effect is very good. The PRC tap is made of high-density ultrafine-grained cemented carbide with a well-designed tool shape that reduces the coefficient of friction by 35% when machining titanium alloys. Curtis Machine, a company that specializes in the production of aircraft engine parts, manufactures titanium bearings with such taps. With 4 tappers, 8740 holes can be machined. Both machining efficiency and tool life are comparable to those of high-speed taps. Taps wear