我厂制造的一批1X8H9T 不锈钢螺母,用普通丝攻来攻螺纹时,由于材料韧性大,加工时有硬化现象,所以在丝攻攻入若干牙以后,接触面加大,摩擦阻力增加,并且容纳切屑的空隙小,因而时常折断丝攻。为了解决这个 I plant a group of 1X8H9T stainless steel nuts, tapping to attack the thread with a common thread, due to the material toughness, processing hardening, so in the tap attack into a number of teeth later, the contact surface increases, the friction resistance increases, and The gap to accommodate the chip is small, so often break the wire attack. In order to solve this