This article mainly introduces:

Belgium hydraulic cylinder,rolling mill cylinder manufacturer,rolling mill cylinder

(Belgium rolling mill cylinder,produced by Hengyu Hydraulic Co., Ltd）

rolling mill cylinder are widely used in Belgium，because of excellent fatigue and impact resistance，no need for deceleration device，long service life.So our company has designed rolling mill cylinder for customers from Belgium.

Introduction to rolling mill cylinder:

At the rated pressure, the thrust of the rolling mill cylinder is determined by what factors: at the rated pressure of the oil pump, the work done by the rolling mill cylinder is related to the diameter of the rolling mill cylinder, but not to the stroke of the rolling mill cylinder. Moreover, the larger the rolling mill cylinder diameter, the larger the area, and the greater the pressure obtained. To this point, we should have a correct understanding and clear understanding, so as to avoid problems in the use of the rolling mill cylinder.

The body of the rolling mill cylinder on the processing process requirements: the body of the rolling mill cylinder is an important and essential part of the rolling mill cylinder, because it has an irreplaceable role. The processing requirements for this part are very high, requiring that the surface roughness of the rolling mill cylinder after processing should reach 0.4-0.8um, and the coaxiality and wear resistance requirements are also very high.

The "O" ring can be used as an auxiliary seal inside the rolling mill cylinder, and the elastic force of the "O" ring makes the sealing slip ring close to the sealing surface, generating sealing pressure to achieve sealing. When the internal hydraulic pressure increases, the "O" ring will further deform and squeeze the slip ring, thereby increasing the sealing pressure and improving the sealing performance. The structure has the characteristics of low friction coefficient, good wear resistance, automatic compensation for wear and absorption of hard particles in the rolling mill cylinder, and can be completely sealed.

The coordination of the sliding parts of the rolling mill cylinder itself should not be too tight, the sealing friction force should not be too large, and H8 / f8 coordination should be selected between the piston rod and the guide sleeve; Check whether the size of the sealing ring is processed strictly according to the standard; If the V-shaped sealing ring is used, the sealing friction should be adjusted to a moderate degree.

Answers to some questions about rolling mill cylinder:

The difference between the overall cylinder and the separate cylinder of the truck?
The whole cylinder is cast in one piece, and such a cylinder generally does not leak oil. Split cylinder refers to two welded, easy to leak oil in the welding place, resulting in damage to the cylinder, or its body can not get up, many people do not use this kind of cylinder now.

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!