Car rims for sale

Automobile wheels include hub bolt holders, drainage spiral blades and rims. The structural points of the hub bolt holders and rims are provided with drainage spiral blades to drain air to the outside of the hub, but the drainage spiral blades can drive the air flow when the wheel rotates, and the air flow forms wind, but the guide spiral blades guide the air flow from the inside of the car to the outside of the car. The inclined wind guide surface will produce a certain concentration of air during the rotation of the wheel, and will converge with the inclined direction of the inclined wind guide surface. Since the inclined wind guide surface is curved, the support ribs are closer to the fixed seat, and the inclined the wind guide surface. The greater the inclination angle. The support ribs gradually increase the concentration of flowing air from the outside of the rim to the inside, thereby introducing air into the vent, because the vent penetrates the rim, the air can be directly directed to the brake and bearing assembly, effectively improving the heat dissipation effect. The air outlet is located on the side of the inclined wind guide surface close to the center of the rim. The number of support ribs is even. The two support ribs form a triangular structure with the rim. The triangular stable structure is adopted to make the support ribs support the rim more stable, thereby ensuring the safety of the hub.

1. In order to maximize safety and reliability, it is recommended that you always check the hub bearings no matter how old the car is-pay attention to whether the bearings have early warning signs of wear: including any friction noise during rotation or abnormal deceleration of the suspension combination wheel when turning.For rear-wheel drive vehicles, it is recommended that the front wheel hub bearings should be lubricated when the vehicle travels to 38,000 kilometers.When replacing the brake system, check the bearing and replace the oil seal. 2. If you hear the noise from the bearing part of the hub, first of all, it is important to find the location where the noise occurs.There are many moving parts that may produce noise, and it may also be that some rotating parts have come into contact with non-rotating parts.If it is confirmed that it is noise in the bearing, the bearing may be damaged and needs to be replaced. 3. Because the working conditions for the failure of the bearings on both sides of the front wheel hub are similar, even if only one bearing is broken, it is recommended to replace it in pairs. 4. Hub bearings are more sensitive, and the correct methods and suitable tools need to be used in any case.During the storage, transportation and installation process, the bearing parts cannot be damaged.Some bearings require greater pressure to be pressed in, so special tools are required, and you must refer to the automobile manufacturing manual. 5. When installing the bearing, it should be in a clean and tidy environment. The entry of fine particles into the bearing will also shorten the service life of the bearing.It is very important to maintain a clean environment when replacing bearings.It is not allowed to strike the bearing with a hammer, and be careful that the bearing does not fall to the ground (or similar improper handling).The condition of the shaft and bearing seat should also be checked before installation. Even minor wear and tear can lead to poor fit, which can cause early bearing failure. 6. For the hub bearing unit, do not attempt to disassemble the hub bearing or adjust the sealing ring of the hub unit, otherwise the sealing ring will be damaged and water or dust will enter.Even the raceway of the sealing ring and the inner ring are damaged, causing permanent bearing failure. 7. There is a magnetic thrust ring in the sealing ring equipped with the bearing of the ABS device. This thrust ring cannot be subject to collision, impact or collision with other magnetic fields.Remove from the packaging box before installation and keep them away from magnetic fields, such as electric motors or power tools used.When installing these bearings, the operation of the bearings is changed by observing the ABS alarm needle on the instrument panel through the road test. 8. Hub bearings equipped with ABS magnetic thrust rings. In order to determine which side of the thrust ring is installed, you can use a light thing close to the edge of the bearing, and the magnetic force generated by the bearing will attract it.When installing, point one side of the magnetic thrust ring inside, facing the sensitive components of the ABS.Note: Incorrect installation may cause the function of the brake system to fail. 9. Many bearings are sealed, and such bearings do not need to be greased during their entire life.Other unsealed bearings, such as double-row tapered roller bearings, must be greased and lubricated during installation.Due to the different sizes of the inner cavities of the bearings, it is difficult to determine how much grease is added. The most important thing is to ensure that there is grease in the bearing. If there is too much grease, when the bearing rotates, the excess grease will ooze out.General experience: During installation, the total amount of grease should account for 50% of the bearing clearance. 10. When installing lock nuts, the torque varies greatly due to the different bearing types and bearing housings. Note to refer to the relevant instructions.

The selection of wheels, how to choose the best one?Many people will transform the car at will in order to change the performance of the car. The transformation of the car requires professional knowledge. For the wheel rim, we cannot arbitrarily increase its diameter. 1. Don't blindly increase the wheels.Some people increase the wheels to improve the performance of the car. When the outer diameter of the tires remains the same, the large wheels are bound to match the wide and flat tires. The lateral swing of the car is reduced, and the stability is improved. When cornering, it is like a dragonfly, passing lightly.However, the flatter the tire, the thinner its thickness, the worse the shock absorption performance, and greater sacrifices must be made in terms of comfort.In addition, if there are a few roadblocks such as stones, the tires can easily be damaged.Therefore, the cost of blindly increasing the wheel rim cannot be ignored.Generally speaking, it is most appropriate to increase one or two sizes according to the size of the original wheel rim . 2. This means that when choosing, you can't choose your favorite shape as you want, and you have to follow the advice of professionals to consider whether the three distances are appropriate. 3. The wheels with complex structure and dense density are indeed beautiful and appear to be of high grade, but it is easy to be refused to wash or overcharged when washing the car because it is too troublesome to wash.The simple wheels are full of movement and clean.Nowadays, the aluminum alloy wheels that are deeply popular with the people, compared with the iron-cast wheels in the past, the degree of deformation resistance has been greatly improved, the weight has been greatly reduced, the power loss of the car is small, it runs fast, saves fuel and has good heat dissipation. It is loved by the majority of car owners.Here is a reminder that in order to cater to the tastes of car owners, many car dealers replace iron wheels with aluminum alloy wheels before selling cars, but they add a lot to the price.So from the perspective of affordability, don't pay too much attention to the material of the wheels when buying a car. Anyway, you can change it according to your own style, and you can save a fortune in the price. Why not?

The closed forging process of the outer ring of automobile wheel rim includes cutting: the blank is made by sawing process, heating: the blank is heated to 1100~1400℃, upsetting: the blank is upsetting on the upsetting equipment to obtain a drum-shaped blank, pre-forging: The drum-shaped blank is made of pre-forged parts through the pre-forged die, precision forging: The pre-forged parts are made of forgings through precision forging dies and hot forging machines. The sawing process can better control the accuracy of the blank blank, reduce the burrs of the forgings, make the quality difference between the blank and the final forging smaller, and reduce the loss of raw materials. The forging process adopts a 2500-ton hot die forging press, which is formed by a cavity forging process. The weight difference between the blank and the forging is controlled within 0.3% during the blanking period, which controls the cutting accuracy, reduces the generation of burrs in the forging, and reduces the waste of raw materials. When designing the forging die, the upper die is designed as a punch, and the lower die extends to the periphery of the cavity, and the guide hole is designed.