Problems that may be encountered in the use of friction welding drill pipe

Friction welding drill pipe is a steel pipe with a grain at the tail, which is used to connect the surface equipment of drilling rig with the drilling and grinding equipment or bottom hole device at the bottom of drilling. The purpose of the drill pipe is to transport drilling mud to the drill bit and to raise, lower or rotate the bottom hole device together with the drill bit. You will also encounter some problems when using it at ordinary times. When the drill pipe comes up, the thread of the drill pipe joint and the protruding surface of the shoulder should be completely removed and inspected, and it can be used in the well after it is determined to be intact. During the whole process of the drill pipe going up and down the drill floor, the drill pipe joint must wear the thread protector to avoid the collision and damage of the joint thread and the shoulder surface in the whole process of lifting and tightening. Friction welding drill pipe wears fast. Due to the influence of processing, assembly and adjustment of new machine parts, its friction surface is rough, the contact area of mating surface is small, and the bearing condition of the surface is uneven. During the operation of the machine, the concave and convex parts on the surface of the parts are embedded and rubbed with each other, and the metal chips that have fallen off are used as abrasives to continue to participate in the friction, which further accelerates the wear of the matching surfaces of the parts. Therefore, during the running-in period, it is easy to cause the wear of parts and components, and the wear speed is fast. At this time, if the work is overloaded, it may lead to the damage of parts and early failure.