In the process of working, the hard chrome plated rods is mainly a connecting part that supports the work of the piston. Most of the applications are in the cylinder and the cylinder movement executing part, and it is a moving part with frequent movement and high technical requirements. Taking a hydraulic cylinder as an example, it consists of a cylinder, a piston rod (cylinder rod), a piston, and an end cover. The quality of its processing directly affects the life and reliability of the entire product. The piston rod has high processing requirements, and its surface roughness requirement is Ra 0.4 to 0.8 um, which requires strict requirements on coaxiality and wear resistance.
The connection structure of the hard chrome plated rods and the piston can be divided into an integral type and a assembled type, and the assembled type has a thread connection, a half ring connection, a bullet ring connection and a cone pin connection. Hydraulic cylinder Under normal working conditions, the piston and the piston rod are threaded. However, when the working pressure is high or the load is large and the diameter of the piston rod is small, the thread of the piston rod may be overloaded. In addition, when the vibration of the working machine is large, the nut of the fixed piston may vibrate, so a non-threaded connection is required.
The main structure and end connection structure of the hard chrome plated rods. The main body structure of the piston rod is solid and hollow. The solid piston rod is used when the rod diameter is small. When the rod diameter is large, the piston rod is made hollow in order to reduce the heavy weight. The hollow piston rod has air holes at one end to allow hot gas to escape during welding and heat treatment. The connection structure between the end of the piston rod and the working machine is according to different usage requirements. There are mainly the following forms: welded single earrings; integral single earrings; smooth ends; double earrings; ball head; external thread connection; internal thread connection.www.xhychromerod.com