This article mainly introduces:
Croatia hydraulic cylinder,reset cylinder manufacturer,reset cylinder
(Croatia reset cylinder,produced by Hengyu Group）
reset cylinder are widely used in Croatia，because of clever hydraulic energy conversion，simple structure and reliable operation，excellent temperature resistance.So our company has designed reset cylinder for customers from Croatia.
When installing the reset cylinder, the axial ends of the reset cylinder cannot be fixed. Due to the effect of liquid pressure and thermal expansion in the reset cylinder, there is axial expansion. If the two ends of the reset cylinder are fixed, all parts of the reset cylinder will be deformed. When disassembling the reset cylinder, it is strictly forbidden to hammer the reset cylinder and the piston surface, such as the reset cylinder hole and the piston surface is damaged, do not allow sandpaper grinding, to use a fine oil stone carefully grinding. The clearance between the guide sleeve and the piston rod should meet the requirements.
Under normal circumstances, the reset cylinder is composed of the rear end cover, body, piston, piston rod and front end cover and other main parts. In order to prevent the working medium from leaking out of the reset cylinder or from the high pressure chamber to the low pressure chamber, a sealing device (sealing ring) is arranged between the reset cylinder and the end cover, the piston and the piston rod, the piston and the reset cylinder, the piston rod and the front end cover. A dustproof device is also provided on the outside of the front end cover. In order to prevent the piston from impacting the end cap when it moves rapidly to the end of the stroke, the end of the reset cylinder can also be provided with a buffer device. If necessary, the exhaust device should be set in order to exhaust.
reset cylinder head explanation: low pressure castings, medium and low pressure with HT300 gray iron, medium and high pressure with 35, 45 steel. When the reset cylinder head itself is the guide sleeve of the piston rod, the reset cylinder head is best cast iron. At the same time, brass, bronze or other wear-resistant materials should be fused on the guide surface. If the guide sleeve is pressed into the reset cylinder head, the guide sleeve shall be wear-resistant cast iron, bronze or brass.
reset cylinder buffer valve inspection and maintenance: For the valve buffer reset cylinder, the focus should be on checking the wear of the buffer valve spool and seat. Once it is found that the amount of wear increases and the seal fails, it should be replaced. It can also be repaired by using abrasive spool and seat matching grinding method.
Why should the piston rod of the hydraulic cylinder be so precise? If you hope the cylinder has a long service cycle, then all parts need to be high-precision, not only the piston rod, but also the cylinder, the sealing groove, the surface roughness, the cylinder looks very simple. Any hydraulic factory can produce the cylinder, but the good cylinder is difficult to produce.
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.
Add Wechat