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, hydraulic oil is clean
Hydraulic seal hydraulic oil is the working medium of the hydraulic system, hydraulic oil is clean, not only affect the hydraulic system performance and hydraulic components life, but also directly related to the normal work of agricultural machinery. Hydraulic system failure at least 75% is due to hydraulic oil is not clean caused. Therefore, to prevent hydraulic oil pollution is very important. Hydraulic seal hydraulic oil is the working medium of the hydraulic system, hydraulic oil is clean, not only affect the hydraulic system performance and hydraulic components life, but also directly related to the normal work of agricultural machinery. Hydraulic system failure at least 75% is due to hydraulic oil is not clean caused. Therefore, to prevent hydraulic oil pollution is very important. [View Details]
Xin Huaxu seal device by the support ring
Xin Huaxu seal device by the support ring, ring, pressure ring composed of three parts. V-shaped seal the standard angle is 90 �, also used in special occasions 60 �. The bearing ring is an important part of the bearing V-ring seal, the section of thick and strong, accurate size, concave angle and V-shaped ring the same (90 �) or slightly larger, so that the ring placed stable. In the free state, the outer diameter of the lip of the V-ring is larger than the inner diameter of the packing chamber, and the inner diameter of the lip is smaller than the outer diameter of the piston rod. In this way, the assembly will have a certain deformation. Due to the role of the supporting ring, this deformation occurs only in the tip of the lip, and the pressure in the contact area, even without the application of compression force, the lip can seal a certain internal pressure. Because the lip has a "self-styled" role, when the media working pressure, the lip change contact shape and increase the contact stress, lips and sealing surface is more closely fit to achieve sealing effect, the media pressure increased contact stress corresponding Lt; / RTI & gt; [View Details]
Material Structure of Hydraulic Seal
Seal The choice of hydraulic seal material for its sealing performance and service life is of great significance. The performance of the material directly affects the performance of the seal. In addition to the general requirements of the hydraulic sealing ring material, the hydraulic seal should also pay attention to the following conditions, elastic and resilient; appropriate mechanical strength, including the expansion of strength, elongation and tear strength. Stable performance, swelling in the medium is not easy, heat shrinkage effect (Joule effect) small. Easy to shape, and can maintain the precise size. Does not corrode the contact surface, does not contaminate the medium and so on. [View Details]
Fluorine rubber hydraulic seals,
Fluorine rubber hydraulic seals, although good material properties, but a long time in different areas of application of the aging time is different, there are some high-temperature local application is the phenomenon of aging is relatively fast, such as long-term few years will appear in time Cracks, in the industrial manufacturing which the temperature reaches a certain height, the parts will increase the role of oxygen diffusion to accelerate the oxidation of fluoride plastic material reaction, which is our common heat effect, leading to deformation of fluorine rubber aging one of the common phenomenon, The process should be to maintain long-term climate temperature modulation, appropriate cooling water and so on. [View Details]
Hydraulic o - ring application and use of know - how
he industry with the pharmaceutical industry seals , Seals for the nuclear power industry, seals for the natural petrochemical industry, seals for the aerospace industry, etc. Rotating fluid machinery in the field of hydraulic O-rings, which include a floating seal ring and an auxiliary hydraulic O-ring are sealed system squadrons End hydraulic O-ring side of the most important features of one of the components. In the auxiliary hydraulic O-ring for compensating movement, the hydraulic O-ring's own elastic deformation, the rubber seal ring and the contact seal can occur relatively static, non-continuous slip (partial slip) and complete Slip and other complex state of micro-motion, which is the o-type rubber seal of the fretting characteristics. The choice of hydraulic O-ring material is essential, the general flexibility of the seal material can only meet the hardness of static use, and in this high-temperature conditions of frequent movement, we must choose high temperature, wear resistance, anti-aging sealing material. [View Details]
a resin curing agent
Mainly used for butyl rubber vulcanization, so that it has excellent heat resistance and high temperature performance. At present the industry has been widely used, to speed up the curing rate, the general need to add stannous chloride as the active agent. Resin curing agent in the processing of rubber plastic can increase, but vulcanized vulcanized rubber hardness is higher. The main disadvantage of resin curing agent is the tendency to scorch. The main varieties are p-tert-butyl phenolic resin, p-tert-octyl phenolic resin. [View Details]
a polyfunctional amine compound
Mainly used for special synthetic rubber, such as acrylic rubber and fluorine rubber cross-linking. Polyamine sulfide fluoride rubber is characterized by the mechanical strength of vulcanized rubber, compressed water for a long time deformation of small, high temperature long-term aging can still maintain good physical and mechanical properties, but easy to scorch, the processing safety adverse, and gradually developed a "closed Amine & quot; compounds, such as hexamethylenediamine carbamates, ethylenediaminocarbamates to improve process safety. When an amine is used as the vulcanizing agent, a metal oxide must be added. At this time, the metal oxide not only acts as an activator to accelerate the vulcanization reaction, but also the acceptor of fluorine generated in the sulfurization reaction than hydrogen. [View Details]
a peroxide curing agent
The decomposition of organic peroxides and their crosslinking are free radical reactions. As the curing agent peroxide should meet the storage stability, safe processing operations, do not cause scorch, to decomposition temperature can quickly decompose, high cross-linking efficiency requirements. With peroxide curing rubber, in general, with a short curing time, good thermal stability of vulcanized rubber, heat aging, low compression water long deformation characteristics, the disadvantage is poor mechanical properties, in addition to organic peroxides poor security, easy decomposition , Easily, explosive, so the storage and transportation should pay special attention. [View Details]
Introduction of O - ring Oil Resistance Material
Oil resistant hydraulic O-rings are classified according to oil resistance (polar rubber): CR, NBR, HNBR, ACM, AEM, CSM, FKM, FMVQ, CO, PUR. Oil-resistant hydraulic O-ring classification (non-polar rubber): NR, IR, BR, SBR, IIR, EPR, EPDM. Oil-resistant hydraulic O-ring of fuel resistance: fluorine rubber FKM and fluorine silicone rubber FMVQ resistance to the best fuel oil. While chloroprene rubber and chlorinated polyethylene rubber CPE fuel resistance of the worst [View Details]
Hydraulic O-Circle Difficulty related to extrusion process
The water absorption of dry polyamides is relatively high. In a saturated state, this type of polymer can be absorbed in water at ambient temperature from 3 to 8% by weight. Due to the supply, the polymer was studied to absorb about 1% by weight in water. It is very important to extrude the polymer before drying to avoid the formation of air bubbles or pores in the finished balloon catheter. [View Details]

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