This article mainly introduces:

Sudan hydraulic cylinder,large tonnage cylinder manufacturer,large tonnage cylinder

(Sudan large tonnage cylinder,produced by Hengyu Group）

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

Introduction to large tonnage cylinder:

The large tonnage cylinder requires that the filtration accuracy of the system is not less than the 80um, and the oil pollution should be strictly controlled, the oil should be kept clean, the performance of the oil should be checked regularly, and the necessary fine filtration and replacement of new working oil should be carried out.

The large tonnage cylinder should be avoided for a long time without use, if it is indeed idle for a long time for some reason, it should also be regularly turned on for empty operation, so that its parts can be fully lubricated, so as to avoid rust on the working surface and affect the normal work in the future. (If it cannot be turned on and run, a small amount of lubricating oil can be applied on its outer surface for protection) ' The use of the large tonnage cylinder should pay attention to: the operation should be as far away from the large tonnage cylinder as possible, to avoid falling objects, knocking, rubbing the large tonnage cylinder coating. When cleaning the large tonnage cylinder, only use soft materials (such as cotton) to wipe, and do not scratch high-hardness materials. Do not use the large tonnage cylinder when the oil temperature exceeds 70 ° C.

How to determine the working pressure of the large tonnage cylinder: The pressure depends on the load size (i.e., F) and the type of equipment. The limitations of assembly space, economic conditions and component availability of the actuator should also be considered. In the case of a certain load, it is necessary to increase the structural size of the actuator if the working pressure is low, for some equipment, the size may be limited, and it is not economical from the point of view of material consumption; On the contrary, if the pressure selection is too high, the material, sealing and manufacturing accuracy of the pump, large tonnage cylinder, valve and other components are also required to be high, which will inevitably increase the cost of equipment. In general, for equipment with a fixed size that is not too limited, the pressure can be selected lower, and the walking machinery should be selected higher.

Factors that should be considered when selecting the oil seal in the large tonnage cylinder: some specific factors should be taken into account when selecting the oil seal in the large tonnage cylinder, so as to have correct consideration and get accurate results, and then avoid wrong selection. The factors and aspects that should be taken into account are eight: large tonnage cylinder diameter, piston rod diameter, piston rod and piston groove size, large tonnage cylinder working pressure, large tonnage cylinder movement speed, hydraulic system oil temperature and large tonnage cylinder working environment.

Answers to some questions about large tonnage cylinder:

What is the safety factor of 25MPa cylinder wall thickness?
Safety factor n can take 3 cylinder material allowable stress [s]=sb/n δ/D=0.08 ~ 0.3 cylinder wall thickness δ=PMAX*D/ (2.3[s]-3PMAX) δ/D≤0.08 cylinder wall thickness δ=PMAX*D/2[s] P < 16MPa, Pmax=1.5Pn; P > 16MPa, Pmax=1.25Pn cold-drawn tube or honing tube is better!

How is the hydraulic cylinder tempered?
The purpose of the tempering treatment is to make the piston rod have comprehensive mechanical properties of strength, hardness, plasticity and toughness, and the internal structure is uniform and fine tempered sorbite, so as to prepare the organization for subsequent surface quenching. The length of the long cylinder piston rod is 3800-4200, and the diameter is Φ90-Φ110mm, so its heating equipment uses a 150KW well resistance furnace or 600KW suspension continuous resistance heating furnace, and the temperature is controlled by two areas. Heat treatment process parameters: in the shaft furnace, a furnace is suspended with 4 pieces, the quenching heating temperature is 830±10℃, and after holding heat for 160min, it is divided into two times for quenching, and two pieces are quenched each time, and the circulating cooling water is used for cooling.