金属压力加工中的外摩擦

• 作 者: 耿申初
• 机 构: 鞍山钢铁学院,
• 出 处: 鞍钢技术
• 发表日期: 1981年02期
• 关键词: 金属压力加工 摩擦力 变形金属 分截面 单位压力 总压力 轧辊 接触面 压力加工 变形工具

相互接触的两物体在压力作用下,当沿接触面有使其相对运动或有运动的趋势时,则接触面间就有阻碍其运动的力的相互作用,称为摩擦,其阻力大小称为摩擦力。变形工具和变形金属间的摩擦力,除极少数的情况有利于压力加工过程外,如轧辊咬入金属时的情况,大多数情况下,摩擦力是有害的力。它产生应力及变形的不均匀分布;使单位压力及总压力增加;

Two objects in contact with each other under pressure, along the contact surface so that there is a relative movement or movement of the trend, there will be obstacles between the contact surface movement of the force interaction, called the friction, the resistance is called Friction. Friction between the deformation tool and the deformed metal, except in rare cases, facilitates the press working, such as when the roll bites into the metal. In most cases, friction is a detrimental force. It produces an uneven distribution of stress and deformation; increases unit pressure and total pressure;