HuiJie Steel Pipe
manufacturing High precision cylinder tubes and shaft,The steel tubing wide
application for
telescopic cylinders,Hydraulic cylinders,pneumatic cylinders and
shafts.The raw materials from seamless and
welded hot rolled tubes by cold drawn or cold rolled process and stress
relieved and annealed, The inner surface
roughness after honed and
skiving roller burnish.
The
honed steel tubes are produced according to the technical standard of
CDS EN10305-1/DIN2391 cold drawn precision steel
tubes
CDW EN10305-2/DIN2393/DIN2394 Cold drawn welded
precision steel tubes
DOM ASTM A513 welded drawn over mandrel steel
tubing
The normal
steel grade:E355 S355J2,CK45/AISI1045,CK35/AISI1035
The max
cylinders tubes,shaft tubes,roller bush can reach OD329mm,length 12000mm
Hydraulic Cylinder Tubes,Hydraulic Cylinder Pipes,Seamless Hydraulic Cylinder Pipes,Seamless Steel Hydraulic Cylinder Tubes Ningbo Huijie Steel Pipe Manufacturing Co.,Ltd , https://www.hjbearingtube.com
Automobile sunroof is based on the principle of negative pressure ventilation, relying on the rapid flow of air in the roof of the car to form the negative pressure in the car while driving, and quickly remove the dirty air in the car. Using this principle, it is also possible to quickly reduce the temperature in the vehicle during the summer driving period and reduce the pressure of air conditioning.
In addition, to remind the owners, you can not ignore the maintenance of the sunroof, especially in the summer rainy season in Guangzhou, if the skylights do not open, water seepage or abnormal sound, then it shows that there is a problem with the sunroof. Ford Fukheng repair plant director Zhong Saga told reporters that the maintenance of the sunroof is mainly two aspects, one is to clean the rubber bar once a year, every two years to clear the drain to see if it is blocked, to properly lubricate the rail. Theoretically, each time the maintenance, 4S shop will do the corresponding maintenance of the car sunroof, cleaning strips free of charge, but the cleaning of the drain is to charge, according to different models, the general charge 200-600 yuan.
Long-term maintenance of skylights may leak
Some car owners have found that even if the car sunroof is closed tightly after the car is used for a period of time, it will still seep in the rainy days. I wonder why. Zhong Zhongchang said that this is due to the owners neglecting the maintenance of the sunroof in the daily car, and the sealing ring of the sunroof of the vehicle will gradually wear out in use, and no timely maintenance and replacement after aging will affect the sealing performance of the sunroof. Caused leaks in the skylight.
Some vehicle sunroofs will shift after the sealant is “lifted†after maintenance. It will only happen when the sunroof goes down from the top, or when it goes up from the bottom, the “lifted up†means the rubber strip and the roof. The friction between the two is too great. This situation usually occurs shortly after the cleaning of the strip, which is due to the fact that the dust on the strip has been wiped off and the coefficient of friction of the strip has increased. Talc powder can be regularly lubricated to reduce excess friction on the basis of tightness.
Reminder: In general, in addition to smokers, some owners have low use of sunroofs, and even many owners lack care for sunroofs. If they are not maintained for a long time, they are prone to aging and other conditions. To know that any one thing is prone to various problems if it is not used for a long time. Each time the maintenance, it is a necessary measure to remind the master to check the sunroof.
Once leaked, it must be repaired immediately
From the normal design, the sunroof can guarantee the corresponding sealing, and many original sunroofs rarely leak. There are many reasons for the leakage. One is a problem with the drainage system. There is a pit at the sunroof. If the drainage is not good, it will flow into the room. The cause of water leakage is mainly the two drain pipes in the A-pillar. For example, when the rubber of the sealing joint is aged or damaged, it will cause water leakage.
In addition, the sunroof drain is generally more secretive, and different models are located in different locations. Normal maintenance of 4S shop professionals is also easier to ignore. If there is a leak in the skylight, first check whether the drain is blocked by dust. Most of the sunroof leaks are caused by the blockage of the drain. There is no special requirement for routine maintenance of auto sunroof. Simply check the sealing strip around the sunroof for damage and check the lubrication condition of the track.
Reminder: If there is a leak in the skylight, it is recommended to go to the 4S shop repair shop to have the maintenance master take the water to test the skylight, find the leak point and then repair it. Another reason is that the vehicle is leaking due to a collision accident. This is likely to make the vehicle's body size not correct. In this case, it needs to be recalibrated.
Skylights will not be strict problem
Owners who regularly use sunroofs will frequently find that skylights are not closed even after frequent use of skylights. This is a very problematic headache. The lack of close-up of this kind of skylight is also due to the minor problems that the owners do not often make to maintain the skylight. Because the sunroof design is anti-squeezing, it can cause problems if the sunroof track is blocked by dust. This is why the owners often wipe the dust in the track. If you suddenly encounter the situation that the sunroof is closed during normal use, the owner can make the skylight tilt first, hold the switch after tilting it up, and after 1 minute, the sunroof will tilt again, so try. Off the skylight, the sunroof will be completely closed for a while.
Reminder: Smokers who love to smoke have a high frequency of using skylights. It is best not to fully slide open the skylight on extremely bumpy roads. Otherwise, the relevant parts may be deformed or even damaged due to too much vibration between the sunroof and the slide rails. There are many sunroof failures that are caused by the user's human factors. For example, manual sunroof locks or handles inadvertently reverse the direction of damage to the sunroof.
It is also very simple to maintain yourself.
Many owners also know the importance of sunroofs, and they will think of necessary maintenance for sunroofs. Some car owners who like DIY would like to complete their maintenance work. How to maintain sunroofs? It is actually very simple to do maintenance on the sunroof yourself: you can open the sunroof completely, wipe the dust on the slide rails with a clean soft cloth, and then lubricate the sliding parts of the sunroof and the transmission pipeline with a lubricant that does not absorb dust. can.
In addition, daily special attention must be paid to the dust protection of the sunroof seals. In spring and autumn, you can use a wet sponge to clean the seal once every quarter. Before the vehicle is parked for a long time, it is necessary to thoroughly clean the skylight with talcum powder in order to avoid the natural aging caused by the chemical changes in the air in the air.
In the usual car wash, be sure to check the skylight's strips and grooves for dust, leaves, or twigs. When using the high-pressure water gun to wash the car, do not directly spray the water directly at the sealing ring around the sunroof. Otherwise, the sealing ring may be deformed under the pressure of the high-pressure water column. It will be easy to enter the water within a long time.
Reminder: There is one thing that the owner can't do, that is, the drainage pipe jamming can not be found by the average person. Because the design of the drainage pipe is relatively hidden, professionals need to be disassembled to search. Therefore, this link needs to enter the factory for maintenance. Now.
Rainy days can be quickly defrosted with skylights
According to the master's introduction, car sunroofs have improved the quality of vehicles, but most consumers do not understand sunroofs.
The first point is that opening the sunroof when driving is less than opening the sidewindow, so the sunroof can be opened when driving at medium speed to avoid adding more fuel consumption.
The second point is that the skylight can be used to quickly remove fog during the rainy season. In the seasons when there is a lot of rain or large temperature difference in summer and autumn in Guangzhou, if the windows are closed during driving, the temperature difference between the inside and outside of the car will be caused, and the front windshield and side windows will easily form fog. If you open the sunroof to accelerate the air convection in the car, you can quickly eliminate the fog in the front windshield; when the vehicle stops in the sun for a period of time, the temperature inside the car will reach as high as 50-60°C. Just open the sunroof and use the car to drive. The negative pressure can quickly reduce the temperature by drawing hot air.
In addition, in the event of a traffic accident, if the door cannot be opened due to squeezing deformation, as long as it is not a tumbling accident, the skylight can be used as an effective escape route.
Sunroof should clean the strip every year for two years to clean the drain