This article mainly introduces:
Oman hydraulic cylinder,trunnion cylinder manufacturer,trunnion cylinder
(Oman trunnion cylinder,produced by Hebei Hengyu company）
trunnion cylinder are widely used in Oman，because of simple structure and reliable operation，excellent temperature resistance，no transmission clearance.So our company has designed trunnion cylinder for customers from Oman.
Repair method of small range wear of oil trunnion cylinder: 1. Use oxygen-acetylene flame to bake the scratched part (master the temperature, avoid surface annealing), bake the oil on the metal surface all the year round until no sparks splash; 2. The scratched part is treated with an Angle grinder, the grinding depth is more than 1 mm, and the groove is polished along the guide rail, preferably a dovetail groove. Scratch both ends of the drilling deeper, change the force situation; 3. Clean the surface with absorbent cotton dipped in acetone or anhydrous ethanol.
trunnion cylinder seal leakage causes and countermeasures: a. Loose tie rod nut will cause leakage, tighten the tie rod nut according to the torque requirements of tie rod nut, test no leakage can continue to use. b. Pressure exceeding the limit will also cause leakage. Replace the trunnion cylinder seal and re-tighten the tie rod nut to reduce the pressure to the nominal pressure range of the trunnion cylinder. c. The trunnion cylinder seal is extruded, if the O-ring is obviously extruded at the trunnion cylinder seal, replace the trunnion cylinder seal.
When the piston speed of the trunnion cylinder is high, the steel ball of the check valve flows with the oil flow, so that the valve hole is blocked, and the trunnion cylinder moves irregularly. Elimination method: Replace the steel ball with a cone valve or spool with a guide shoulder.
trunnion cylinder can not drive the load troubleshooting: oil pressure is too low. trunnion cylinder selection specifications are too small. Leakage in trunnion cylinder or associated hydraulic system element.
How to deal with the surface degreasing process before spraying paint after cylinder assembly, and what degreasing agent is used?
Cylinder painting, generally using the following process (note: the cylinder is best painted, do not spray powder coating, because the powder coating curing temperature is high, will lead to sealing defects and oil leakage) : Pre-degreasing - degreasing - washing - washing - pickling - washing - washing - table adjustment - phosphating - washing - washing - drying - polishing - spray primer - spray paint degreasing agent generally use neutral or weak alkaline degreasing agent, phosphating liquid generally use zinc phosphating liquid.
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.
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