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日东精工于近日开始销售面向炭纤维增强树脂基复合材料(CFRP)的自攻丝螺钉“CF Tight”。通过减少螺钉旋入时产生的炭纤维混乱,抑制了紧固强度的下降,可实现稳定的紧固。新产品将尖端部分设计成近似三角形的形状,减轻了螺钉旋入时的阻力。同时还将螺钉头下部设计成圆形,增加了与CFRP的接触面积,提高了破坏扭矩性能。这样一来,即使是薄板也可获得高紧固力。此外还改进了尖端钝角牙的螺纹牙形状,由此抑制了螺钉旋入时炭纤维的混乱。这样不仅
Nitto Seiko recently started selling self-tapping screws “CF Tight” for carbon fiber reinforced resin-based composites (CFRP). By reducing the chaos of the carbon fibers generated when the screw is screwed in, the reduction of the fastening strength is suppressed and a stable fastening can be achieved. The new product is designed to tip the approximate triangular shape, reducing the screw screw resistance. At the same time, the lower part of the screw head is also designed into a circular shape, which increases the contact area with the CFRP and improves the breaking torque performance. As a result, high fastening forces can be achieved even with thin plates. In addition, the shape of the thread of the sharp obtuse teeth is improved, thereby suppressing the chaos of the carbon fibers when the screw is screwed in. This is not only