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Home > Hone Tube > Phenomenon and the reasons tube honing machine fails to resolve the
Phenomenon and the reasons tube honing machine fails to resolve the
2013-12-16 by seoer3
When the machine fails we do not panic, first look at what the  Hone Tube   reason for this failure is that ? Then check the reason it should start from what place? Following on from honing tube manufacturers about the reason for us to sort out this aspect Symptoms and Causes
Find the cause of the fault from the following three points in the maintenance and improvement of the system :
( 1 ) Check the boom cylinder leakage situation . The easiest way is to move the arm rises , to see if there is significant free fall . If you disassemble the fuel tank to check the whereabouts of obvious , such as the ring is worn and should be replaced. ( 2 ) Check the control valve . First cleaning valve, check the valve for wear , such as wear and tear should be replaced. If there is still no change in the safety valve is installed , and then check the control valve spool wear, the gap is generally limits the use of 0.06mm, badly worn should be replaced. ( 3 ) measuring the pressure of the hydraulic pump . If the pressure is low , then make adjustments , plus the pressure is still not tune up , then pump heavy wear . In general , the main reason causing the boom can not raise the load as :. A pump heavy wear . At low speed pump leak serious ; during high-speed operation , the pump pressure increased slightly , but the wear and the vent pump volumetric efficiency decreased significantly , it is difficult to reach the rated pressure. Long working hours and increased pump wear , temperature rise , resulting hydraulic components and seals wear aging , damage , loss of sealing ability , hydraulic oil deterioration, leading to failure. b. hydraulic component selection unreasonable. Specifications for the boom cylinder 70/ 40 non-standard series , the seal member is also non-standard , high manufacturing cost, and replacement of seals
Inconvenience. Boom cylinder bore small , is bound to make the system set pressure is high. c. Hydraulic system design is unreasonable . Control valves and hydraulic steering gear is a single pump series , the safety valve set pressure of 16MPa, while the rated working pressure of the hydraulic pump
Li also 16MPa. Pump often work at full load or prolonged overload ( high pressure ) conditions , and the system has a hydraulic shocks, oil changes for long periods , hydraulic oil contamination , increased pump wear, so the pump casing burst ( after have been found such failure ) . Everyone can be repaired in accordance with the above guidelines encountered hydraulic pump failure .

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