80-200t самосвал гидравлическая система грузовик разгрузочная

Design 

Not only we could manufacture all kinds of heavy duty hydraulic cylinder according to the drawing from customers, but also we could make a design according to customers’ requirements. If you require to make a design, please advise us the following specification: 

1. Rated pressure


2. Working pressure


3. Test pressure


4. Working condition and environment ,for example ,temperature ,working frequency


5. Pulling force ,and return stroke force


6. Pulling and return speed


7. Assembly size


8. Seal ring requirements .For example, brand, seal material etc .


9. Tube and piston rod raw material requirements


10. Piston rod surface treatment requirements, for example chromating film thickness,   Surface hardness etc.


11. Painting and other spare parts requirements. 

1.1.Cylinder tube size and choice

1.1.1   According to the cylinder pressure and inside diameter size ,different steel tube Would be chose .

       1.ID ≤300mm , cold rolled precision seamless tube would be chose

       2.300mm≤ID ≤500mm , hot rolled seamless tube would be chose

       3.500mm≤ID ≤1000mm, forged tube would be chose

1.1.2 Cylinder tube steel grade : SAE1020 , SAE1045 ,27SiMn , S355JR ,S355J2G3,St52-3 ,SUS304 ,SUS316L etc .

1.1.3 Cylinder tube inside boring and honing , roughness R0.2-R0.3,

1.1.4 Cylinder tube inside chromating : if necessary ,tube inside chromating could be applied .

1.2 Piston rod is a very important part for hydraulic cylinder .

1.2.1 Piston rod steel grade : SAE1045, 42CrMo4, SUS410 ,SUS420, SUS304, SUS316L

1.2.2 Piston rod chromating and surface hardness .

We ensure that every piece piston rod would be surface hardened before chromating , surface hardness is HRC55-60 , Chromating film thickness is 0.03-0.04mm if there is no other specific requirements .

1.4 Tube and flange welding

The welding on cylinder tube and flange would be Ultrasonic tested every time , the welding seam would be cleaned before machining .Eternal company ensure that every welding seam has no any leak during lifetime

1.5 Assembly and pressure test

Before hydraulic cylinder is assemblied , every spare parts would be measured and cleaned .After hydraulic cylinder is assemblied , pressure test would be carried out one By one ,we ensure that testing pressure is higher 30%-50% than working pressure , and pressure holding time 30-60 minutes is necessary . Every piece hydraulic cylinder must be tested completely without any leak .

1.6 Painting and storage .

After hydraulic cylinder pass through pressure test , painting is necessary .

Product progress of  the 80-200t Dump truck hydraulic system truck unloading system

Professinal test equipments

 Packaging & Shipping

Company Information of  the  80-200t Dump truck hydraulic system truck unloading system

We Modern Crane Company is professional at cranes & hoists for over 20 years, our products cover cranes, hoist, winches and the end beam lifting accessories etc.

Hope we can have opportunity to cooperate with you.

Certifications

Modern crane welcome your visit, hope to cooperate with you!