This article mainly introduces:

Puerto Rico hydraulic cylinder,rolling mill cylinder manufacturer,rolling mill cylinder

(Puerto Rico rolling mill cylinder,produced by Hebei Hengyu company）

rolling mill cylinder are widely used in Puerto Rico，because of no transmission clearance，powerful torque，clever hydraulic energy conversion.So our company has designed rolling mill cylinder for customers from Puerto Rico.

Introduction to rolling mill cylinder:

Disassembly rolling mill cylinder: When disassembly rolling mill cylinder, strictly prevent damage to the screw thread at the top of the piston rod, the screw thread of the rolling mill cylinder head and the surface of the piston rod. It should also be noted that the piston cannot be played out from the rolling mill cylinder.

If it is found that the rolling mill cylinder lubrication is poor or the rolling mill cylinder bore processing is abnormal, it is necessary to feedback the situation to the manufacturer, because the piston and the rolling mill cylinder, the guide rail and the piston rod have relative movement, if the lubrication is poor or the rolling mill cylinder bore is abnormal, it will aggravate the wear and reduce the straightness of the rolling mill cylinder center line. In this way, when the piston works in the rolling mill cylinder, the friction resistance will be large and small, resulting in slip or crawling. The solution is to repair and grind the rolling mill cylinder first, and then prepare the piston according to the matching requirements, repair and grind the piston rod, and configure the guide sleeve.

rolling mill cylinders in series, parallel and series parallel. Series: In the rolling mill cylinder, the oil inlet of the subsequent reversing valve is the supply of the previous oil return, and there is no separate oil return circuit connected with the oil return in each valve. Series: In the rolling mill cylinder, the oil inlet of the subsequent reversing valve is the supply of the previous oil return, and there is no separate oil return circuit connected with the oil return in each valve. Parallel: the pressure oil in the rolling mill cylinder is connected with the inlet oil of each reversing valve, and the return oil is collected by the return oil circuit. Series parallel: For this one, compared with the simple series and parallel, it is slightly more complicated, but it is not impossible to understand. The series refers to the oil in the rolling mill cylinder, which is in series form, but can not form a series circuit, and the parallel refers to the oil return circuit of each valve, which is in parallel.

When the rolling mill cylinder needs to be stored for a period of time, please follow the recommended methods: The rolling mill cylinder should be stored in a dry, clean, non-corrosive gas indoor environment, pay attention to protect the rolling mill cylinder from internal corrosion and external damage. If the indoor requirements cannot be met, the hardened and well-drained ground should be cushioned at least 30cm, and the upper part should be covered with waterproof storage. The oil rolling mill cylinder should not be in direct contact with water vapor for a long time. The rolling mill cylinder should be placed as vertically as possible with the piston rod facing up, which minimizes corrosion due to possible condensation in the rolling mill cylinder and permanent deformation of the seal due to the piston and rod weight. (When the shield is stored in the shield machine, the support shoe is placed upward). Keep the oil port protective cover until the pipe is connected. For long-term storage, the protection should be added on both sides of the piston of the rolling mill cylinder Before working, the rolling mill cylinder must be run repeatedly with low pressure (greater than the starting pressure) to discharge the air in the rolling mill cylinder before normal work. The oil inlet and outlet and the joint must be tightly fastened with a combination pad to prevent oil leakage.

Answers to some questions about rolling mill cylinder:

What is the meaning of dead volume in hydraulic cylinder?
Closed volume, also known as dead zone volume Positive displacement pump is dependent on the change of sealing working volume to achieve suction and pressure oil, in order not to make the suction and pressure oil cavity interworking, there is an oil sealing area between the suction and pressure oil cavity, when the sealing working volume passes through the oil sealing area, neither pressure oil cavity nor oil suction cavity communication, forming a closed sealing volume. The unloading groove is opened, and the grooving principle is that the sealing volume decreases and the oil pressure chamber is communicated, and the sealing volume increases and the oil suction chamber is communicated.

How to calculate the cylinder diameter, rod diameter and pressure of the cylinder, and how to output tonnage?
Hydraulic cylinder output force F=PAX10^3(KN) F is the output force (KN), P working pressure (MPa), A is the piston or plunger area of action.