This article mainly introduces:

Vietnam hydraulic cylinder,steel mill cylinder manufacturer,steel mill cylinder

(Vietnam steel mill cylinder,produced by Hebei Hengyu company）

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

Introduction to steel mill cylinder:

The role of the steel mill cylinder in the mold industry: the steel mill cylinder has a variety of uses in the mold, one is that the core distance is very large, or because of the mechanism of the product, only the steel mill cylinder is reasonable or more cost saving. Let the side core be extracted before opening the mold. Hot runner is mainly based on the product to decide, sometimes customers require the use of hot runner, the price is more expensive, but there are many benefits, you can save raw materials, shorten the molding cycle The steel mill cylinder has an irreplaceable role in the heavy industry production process: it is mainly used in places that need to support heavy objects for a long time, and it can still support heavy objects when the oil pressure is removed, and it is safe and reliable. Can be used underwater, single action, load reversion, nut self-locking to make the load safer, especially in large projects, is easy to operate control and self-locking jack, designed with a safety pressure retaining device, built-in pressure relief valve to prevent overload, to protect the self-locking jack to facilitate safe operation. The connection of the device is connected by high pressure hose and threaded joint, which has the advantages of fast use and overcoming the shortcomings of fast traditional joint oil leakage. It is mainly used for equipment installation and toppling operation in various industries such as electric power, construction, machinery manufacturing, mining, railway bridge, shipbuilding and so on.

There are some honeycomb holes in the inner wall of the steel mill cylinder, piston or piston rod surface. How is this formed? When we repair the steel mill cylinder, we can see that there are some honeycomb holes on the inner wall of the steel mill cylinder, the piston or the piston rod surface, which are caused by cavitation. Therefore, the cavitation of the steel mill cylinder is targeted to prevent. Is very necessary.

The steel mill 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.

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.

Answers to some questions about steel mill cylinder:

What are the causes of hydraulic cylinder oil leakage?
First, between the piston rod and the guide sleeve: 1, the cylinder force is not good, there is a radial force between the piston rod and the guide sleeve there is a partial load, so that the oil seal is worn early, causing oil leakage. 2. The ambient temperature of the piston rod is high, especially radiant heat, and the oil seal aging is fast. 3. Whether the oil seal is selected correctly; Check whether the oil seal is damaged during installation. 4, guide sleeve and piston rod matching tolerance is correct. Second, between guide sleeve and cylinder: 1. Whether the O-ring on the guide sleeve is installed correctly, pay special attention to the O-ring can not "roll", especially some O-rings are die-pressed with a die-closing line. Third, common problems: 1, guide sleeve, cylinder, piston rod concentricity is poor. Fit tolerance is correct.

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!