This article mainly introduces:

Greece hydraulic cylinder,press hydraulic cylinder manufacturer,press hydraulic cylinder

(Greece press hydraulic cylinder,produced by Hengyu Hydraulic Co., Ltd）

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

Introduction to press hydraulic cylinder:

Do not enter foreign bodies when installing the press hydraulic cylinder block. The place where the installation operation is carried out, the conditions are not good, and foreign bodies can be entered unconsciously. Therefore, the installation site must be cleaned up around, especially the place where the parts are placed must be cleaned, so that there is no dirt.

Protection of the press hydraulic cylinder surface: During the dismantling process, safety protection should be carried out on the press hydraulic cylinder to prevent objects from falling and welding slag from falling to the surface, causing damage to the press hydraulic cylinder surface. In the process of propulsion, the damaged pipe segments should be prevented from falling and smashing, and the slurry remaining on the surface of the press hydraulic cylinder should be cleaned up in time.

press hydraulic cylinder is the most important part of construction machinery, the traditional processing method is: broaching press hydraulic cylinder block - fine boring press hydraulic cylinder block - grinding press hydraulic cylinder block. The rolling method is: broaching press hydraulic cylinder block - fine boring press hydraulic cylinder block - rolling press hydraulic cylinder block, the process is 3 parts, but the time is compared: grinding 1 meter of the press hydraulic cylinder block is about 1-2 days, rolling 1 meter of the press hydraulic cylinder block is about 10-30 minutes. Input comparison: grinding machine or quilting machine (tens of thousands - millions), rolling knife (ten thousand - tens of thousands). After rolling, the surface roughness of the hole decreases from RA3.2-6.3 μm before rolling to Ra0.4 ~ 0.8μm, the surface hardness of the hole increases by about 30%, and the fatigue strength of the inner surface of the press hydraulic cylinder increases by 25%. If the press hydraulic cylinder life is only considered, it is increased by 2 to 3 times, and the boring and rolling process is 3 times more efficient than the grinding process In particular, if you want to make high-quality press hydraulic cylinders, you must take the rolling production process. After the press hydraulic cylinder is rolled, there is no sharp tiny edge on the surface, and long-term motion friction will not damage the seal ring or seal, which is particularly important in the hydraulic industry.

In the process of using the press hydraulic cylinder, sometimes such a problem will occur, the press hydraulic cylinder can not act immediately after the instruction of the press hydraulic cylinder action is issued, and it must be moved after a short time, or sometimes it can move and stop moving, showing that the operation is very irregular. The cause and elimination of this failure mainly include air in the oil press hydraulic cylinder. Elimination method: exhaust through the exhaust valve. Check the piston rod reciprocating parts of the sealing ring for air inhalation, if so, replace the sealing ring.

Answers to some questions about press hydraulic cylinder:

How to choose cylinder size, pump type, motor power for a 30-ton press?
30 tons = 30,000 kg. It is expected to use a 16 mpa oil pump, then the cylinder area =30000/(160x3.14) and then square, the cylinder bore is 150 mm. Calculated at 500 mm travel per minute, the flow rate per minute is :0.75^2x3.14x5=8.8 liters/minute. Motor power =8.8x16/60=2.355. A 9 L/min, 16 mpa pump is available. Piston diameter 150 mm cylinder. 3 kW motor.

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.