This article mainly introduces:

Oman hydraulic cylinder,steel mill cylinder manufacturer,steel mill cylinder

(Oman steel mill cylinder,produced by Hengyu Group）

steel mill cylinder are widely used in Oman，because of powerful torque，clever hydraulic energy conversion，simple structure and reliable operation.So our company has designed steel mill cylinder for customers from Oman.

Introduction to steel mill cylinder:

The assembly work of the steel mill cylinder has a great impact on the quality of the steel mill cylinder: each part must be carefully cleaned before assembly; To correctly install the sealing device everywhere: when installing the sealing ring, pay attention to its installation direction to avoid oil leakage due to installation, and its lip should be equipped with a pressure oil chamber. In addition, because it is a YX-shaped sealing ring, it is necessary to pay attention to distinguish between shaft and hole use, do not install wrong; Because the sealing device is matched with the sliding surface, an appropriate amount of hydraulic oil should be applied during assembly; The special wrench should be used when the threaded coupling is tightened, and the torque should meet the standard requirements; After the piston and piston rod are assembled, it is necessary to measure whether the coaxiality and straightness on the full length are out of whack. After assembly, there should be no blocking sensation and uneven resistance when the piston assembly moves.

steel mill cylinder piston rod material selection and technical requirements: (I), because there is no special requirements, so use 45 steel as the piston rod material, the design of the piston rod only withstand pressure stress, so no modulation processing; (ii) The coaxial tolerance of the shaft journal and the outer circle of the mounting piston is not greater than 0.01mm, so as to ensure the coaxial degree of the outer circle of the piston rod and the outer circle of the piston, and avoid the stuck phenomenon of the piston and the steel mill cylinder, the piston rod and the guide. The vertical tolerance between the end face of the mounting piston and the axis of the piston rod is not more than 0.04mm/100mm to ensure that the piston installation does not produce skew; (iii) The outer circle of the piston rod should pay attention to the roughness; (iv) Because it is operated under low load conditions, surface treatment is omitted.

Causes and countermeasures of oil steel mill cylinder leakage: Cast iron ring seal allows a certain degree of internal leakage. The impurities in the steel mill cylinder will lead to premature wear of the piston seal, replace the piston seal; If the steel mill cylinder is visibly scarred, the steel mill cylinder must be replaced. It can be pressurized at one end of the steel mill cylinder and opened at the other end of the oil port to observe whether there is obvious internal leakage at the end of the oil port. Most steel mill cylinder piston drift may not come from the steel mill cylinder, the above method to determine the steel mill cylinder without internal leakage is helpful to determine the problem of the hydraulic system related components.

When the initial action of the steel mill cylinder is slow, please check the temperature of the hydraulic system, because in the case of low temperature, the viscosity of the hydraulic oil is large and the fluidity is poor, resulting in slow action of the steel mill cylinder. The improvement method is to replace the hydraulic oil with good viscosity temperature performance, and the oil temperature at low temperature can be increased by heater or heating by the machine itself, and the normal working oil temperature of the system should be maintained at about 40 ° C.

Answers to some questions about steel mill cylinder:

What kind of seal ring we should choose for 120Mpa hydraulic cylinder?
The sealing rings used in mining machinery are high pressure, which can reach 150MPa. It is generally composed of three parts, the guide ring, the sealing body and the elastomer. It's not a special structure. It's more mature. Usually said mountain circle, bud circle.

The inner diameter of the injection cylinder is 203.2mm and the diameter of the screw is 63.5mm. What is the enhancement ratio?
Oil pressure multiplied by the cross-sectional area of the cylinder is equal to the theoretical output force value, and then multiplied by the efficiency of the cylinder is equal to the actual output force value, and the oil pressure can be calculated by inverting the value input.