• Home > Factory News
    Liquid PRESS What causes oil spill
    2015-8-13 23:54:21

    Shandong Shengya Machinery Co., Ltd. specializing in the production of various types of brick, brick machine, brick machine, hollow brick, pavement brick and other equipment of the old brick factory.
         The main hydraulic system leakage causes the following areas:
    1, oil pollution
    Including gas pollution, particulate pollution, water pollution and so on. Gas pollution: at atmospheric pressure, hydraulic oil soluble air about 10%, and in high-pressure hydraulic system, the oil will dissolve more air or gas. Air to form bubbles in the oil. If the hydraulic oil in a very short period of time between the high pressure quickly transform ﹑ low pressure, high temperature will cause bubbles in the high pressure side, burst in the low pressure side, if there is a hydraulic system component surface pits and injuries, hydraulic oil high speed toward the element surface will accelerate the wear surface, causing leaks. Particle pollution: hydraulic cylinder piston rod exposed directly contact environment, although the guide sleeve is equipped with a dust ring and seals, but inevitably the dust, dirt into the hydraulic system, speed up the seal and piston rod such as scratches and wear, causing leaks, particle pollution is one of the fastest growing component damage factors. Water pollution: due to the humid environment and other factors that could cause water to enter the hydraulic system, the water will react with the hydraulic oil, the formation of acids and sludge, reducing the lubricating properties of the hydraulic fluid, accelerated wear parts, water can also cause control valve stem bonding occurs, the control valve operating difficulties, scratches seals, resulting in leaks.
    2, sealing problems
    Seal design does not meet the regulatory requirements, the size of the seal groove unreasonable, seal with low accuracy, with the gap tolerance; seal flatness error is too large, poor processing quality; seal structure improper use, resulting in deformation of the bonding surfaces are not fully contacts; assembly not careful, the joint surface there is dust or damage arising due to large plastic deformation. Seal failure, the amount of compression is not enough, aging, injury.
    Sealing surface roughness: the roughness of the relative motion of the hydraulic system too high or vice surface leakage will occur when the axial scratch; roughness is too low, when to mirror ring lips will scrape the film, make the film difficult forming a sealing edge to produce high temperature, increased wear.
    3, manufacturing problems
    All hydraulic components and seal member have strict dimensional tolerances, geometric tolerances and other requirements. If the difference in the manufacturing process of the Super League, for example: the radius of the cylinder piston seal groove depth or width, put a ring of hole size tolerance or because of processing problems caused by the loss of a circle, itself has a burr or pits, chrome shedding seal member will be deformed, scratched, crushed or pressed false phenomenon occurs, loss of sealing function, will make the parts themselves have congenital leaks, leakage occurred during or after the assembly use.
    4, fittings question
    Types and use conditions incompatible fittings; the structural design fittings unreasonable; poor processing quality pipe joints, sealing effect can not afford; pressure pulsation caused by loose fittings, loose bolt creep not be tightened; fittings tightening torque excessive or insufficient.
    5, the oil temperature is too high
    In most cases, when the oil temperature is often above 60 ℃, the oil viscosity is greatly decreased, ring expansion, aging, failure, resulting in a hydraulic system leak. Studies show that the oil temperature is increased by the seal of the life of 10 ℃ will be halved.
    6, the leak case
    Mainly in the casting and welding parts defects, defect gradually expanded under pressure pulsation of the hydraulic system vibration or shock effect, causing leaks.
    7, the hydraulic system pressure shocks
    Hydraulic system due to frequent commutation, at a higher pressure suddenly start pump or close the valve and cylinder fast action will cause the instantaneous peak pressures of up to several times the working pressure, sometimes enough to make seals, pipes or other damage caused by the hydraulic components Give way.
    Shandong Shengya Machinery Co., Ltd. has been committed cement products machinery development, production and sale of advanced equipment, superb technical expertise and two decades of experience, the company has always been at the forefront of research and development center block molding machine market development Follow the advanced technology at home and abroad, to develop products for different investment needs of users, mainly block making machine, hydraulic tile machine, cement pipe machine, mixer, hanging roller machine, telephone poles machine equipment. At present the country with 19 offices and six overseas plants (Nigeria, Tanzania, Algeria, Kenya, Mozambique, Ethiopia) and exported more than 100 countries and regions.


    < a href=" ">在线客服