Y-ring With Self-compensation Function
The main reference to the structural design of the Y-ring is that the working pressure and the different working pressure need to adjust the corresponding parameters in the design. The structural design parameters mainly include the lip of the lip, the thickness of the lip, the outer lip The angle between the cylinder and the inner lip and the piston rod. Which lip design is very important, which is directly related to the Y-ring sealing performance.
Y-ring in the design according to the size of the cylinder diameter, so that you must contact with you there is a certain amount of interference, which can produce the initial sealing force. The design of the amount of interference can not be too large can not be too small, when the Y-ring inner lip greater amount of interference, will increase the lip and contact surface friction, resulting in excessive wear and tear lip. Although the Y-ring generally has a self-compensating function, but this time to reduce the overall life of the ring.
When the smaller amount of interference, the direct result is the lip and seal contact surface relaxation preload is not up to standard, poor sealing effect, the conditions for high pressure conditions will be more serious.
Y-ring to withstand the pressure is small, the sealing force of the seal are generally only from the seal of the preload, but when the pressure to withstand the seal, this time in order to improve the sealing performance, can not just consider The amount of interference problems, but also need to consider the problem of the thickness of the lips, the thicker the stronger the ability to resist bending.
Y-ring sealing lip can be removed by molding or mechanical cutting way to shape, for the lip size is small or large size is usually used to form a molding method, there is another method, the use of cutting Processing methods Cutting lip, the need for specialized tire, and more than a process, the production cycle is longer.
Y-type ring hydraulic cylinder exclusive ring, y-shaped ring is not so widely used O-type, but its importance is self-evident. Y-shaped ring there are many types, so the corresponding use of materials are more extensive, including the main polyurethane, Dingqing rubber, fluorine rubber, silicone rubber the following four.
Then the following Gaoke Rubber on the following four materials to do the following one by one to explain:
First of all, polyurethane, in the Y-ring of many categories of polyurethane is almost universal, each type of Y-ring can use this material. Polyurethane material compared to other materials is a major advantage of wear resistance. From the appearance can also be seen that the material produced by the Y-ring than other rubber hardness, good shape, which is because of the high brittle polyurethane material reasons.
Polyurethane material in the breakdown of the words can be divided into TPU class and cpu class two, of which tpu is a rubber name, tpu name for the thermoelectric plastic polyurethane rubber, this material can be softened at a certain heat, and at room temperature The next can be used to maintain the same effect.
The cpu is a resin class CPU with a wide range of hardness, high strength and elongation, excellent wear resistance, integrated performance is mainly used in the mining industry, as some of the raw materials industry.