Blog

As we all know, wheels are an important part of automobiles.At present, aluminum alloy wheels are a commonly used automobile wheels.Compared with traditional wheels, aluminum alloy wheels have certain advantages.Therefore, automotive steel experts will introduce the advantages of aluminum alloy wheels. 1.Fuel saving For wheels of the same size, aluminum alloy wheels are 2kg lighter than steel wheels, and a car can save 10 yuan kg in weight. At the same time, every time the car is reduced by kg, it can save 20L of gasoline a year. Aluminum alloy wheels are more expensive than ordinary steel wheels, but the fuel cost saved per car running to 20,000 km is enough to offset the cost. 2.Improve the service life of the engine According to the load and power curve of the automobile engine, when the load increases to a certain extent, its power will decrease, which means that at this time, it will be more difficult to reduce the engine load, natural failure and extend the service life. 3.Good heat dissipation The heat transfer system of aluminum alloy wheels is three times that of steel, which has a good heat dissipation effect.When driving at high speed, the tires can also be maintained at the appropriate temperature, so that the brake drum and tires are not easy to age, increase life, and reduce the chance of tire bursting. 4.Rugged and durable The impact resistance of aluminum alloy wheels.The tensile and thermal strength are higher than that of steel wheels, which are also aluminum alloys in the national defense industry.One of the reasons why aviation technology plays an important role. 5.Beautiful Generally, steel wheels will be limited by production, the form is monotonous and rigid, and there is a lack of change.Aluminum alloy wheels have various designs and are shiny.The color effect is better, thereby improving the value and beauty of the truck crane.

There are many parameters involved in replacing the wheels. It is best for interested owners to do their homework first so as not to cause hidden dangers to safety. 1. Center Bore (CB) Refers to the size of the center hole of the hub.Although wheels with different values from the original factory can be installed through positioners, this is not recommended for safety reasons. 2. Section circle diameter (PCD) For example, a hub with a diameter of 5x120mm means that it has 5 positioning bolts, and the diameter of the circle they form is 120mm.This value should also comply with the original factory. 3. Offset Also known as the ET value, this value is positive, indicating that the fixed surface of the hub is outside the center surface, and vice versa, it is within the center surface.The deviation value of a car is generally positive, and this value has a great impact on the stability of the car and the traceability of cornering. It is determined by the original factory and cannot be changed without special needs. 4. Diameter and width The diameter determines the size of the rim .Since the speedometer reading of the car is measured based on the speed of the wheel, the wheel diameter is too large to cause the speedometer reading to be too small. Unknowingly, you are speeding.Excessive wheel diameters will also rub against the wheel arches and fenders.Therefore, it is better to upgrade the wheels to be 1 inch larger than the original factory, no more than 2 inches at most, and to match thin tires to ensure that the size of the entire wheel is the same as before the upgrade. The width affects which tires are selected after the upgrade. Tires that are too wide will reduce the starting speed and consume more fuel.The correspondence of common values is: 185mm wide tires correspond to 5-inch wide rims; 195mm corresponds to 6 inches; 205mm corresponds to 6.5 inches; 215 corresponds to 7 inches.

Vehicle wheels cannot be replaced without permission. Even if the tires look simple in structure, when the size of the tires changes, the original factory data on the car will be changed accordingly. After all, only the tires are in contact with the road. Moreover, the most obvious impact of replacing the wheels is the mileage, which will become smaller than the usual normal driving data, thereby disrupting the maintenance cycle judgment originally recorded by the vehicle, so it is not recommended to replace the car wheels casually. In order to replace large-size wheels, in order to achieve the value closest to the outer diameter of the original tire, it is necessary to replace the tires with a lower flat ratio. The direct result of the low flat ratio is that the road sense will be richer, which can increase the driving experience to a certain extent. But on the contrary, the richness of the road will also be more bumpy, because the flatness ratio is reduced, the tire wall is thinner, and the shock absorption and cushioning capacity will decrease. Similarly, the tire wall becomes thinner. If you pass by with a big bump, if you don't slow down and pass like you did with the original tire, the tire will usually bulge.

With the development of society, people's demand for automobiles is increasing. Automobile wheels are an important part of automobiles, and the performance of the wheels is directly related to the performance of the vehicle. The surface treatment method of magnesium alloy grinding wheel includes grinding the surface of the workpiece of the magnesium alloy grinding wheel to remove oil stains, ultrasonic cleaning after anode electrophoresis; then micro-arc oxidation treatment, then spraying, cleaning, drying, and then nickel plating, washing, and drying; then cathode electrophoresis, washing, and curing; then the intermediate coating is dried by acrylic resin, the topcoat is sprayed and cured. The method first performs electrophoresis treatment on the workpiece, forms a layer of electrophoretic paint film on the surface of the workpiece, forms a uniform, smooth, and strong adhesion paint film on all parts of therim, and then forms a nickel-plated micro-arc oxide layer on the surface of the paint film, which is cured by cathode electrophoresis, intermediate paint and spraying topcoat. The surface of aluminum alloy wheels is mechanically polished, the surface is alkaline etched, and the surface of aluminum alloy wheels is roughly polished with an electrolyte with a high acid concentration; the aluminum alloy wheels are finely polished with an electrolyte with a low acid concentration.

The wheel rim, also known as the hub, is a barrel-shaped metal part. The center of the tire is mounted on the shaft. The decorative cover of the wheel is generally fixed in the center of the wheel to beautify the appearance of the wheel and protect the wheel and the central rim. At present, part of the structure of the decorative cover of the wheel is directly fixed and welded to the wheel. Today we will show you the benefits of using the aluminum alloy wheels . The connection will damage the surface finish of the wheel, the operation is more complicated, and the quality of the connection is not guaranteed; the other part is the rim decorative cover, the mounting hole on therim is fixed to the rim, for example, the decorative cover is mounted on the rim surface of the wheel through a pawl. Although the operation is simple, the installation size cannot be adjusted. The aluminum alloy wheel rim includes arim body, the middle of the rim body is provided with a mounting groove, the bottom of the mounting groove is provided with a central hole connected to the axle socket, the edge of the mounting groove is provided with a stepped hole, and the step hole of the decorative cover is provided with a step hole. The center hole of therim body is provided with a snap ring close to the outer surface of the rim. The decorative cover includes a decorative surface that matches the external shape of therim body and a mounting surface located inside the rim body. The outer side of the lower end of the buckle is provided with a protrusion, and the inner side of the lower end of the buckle is provided with an adjustment groove corresponding to the protrusion.

During the driving process, car owners will be more concerned about the paint scratches on the car, but have they ever paid attention to the scratches on the wheels?How can I repair the wheel rim if it is scratched? The specific methods for repairing the wheel rim are: 1. Check for scratches, and carefully check whether the scratches extend to the inside of the wheelrim. If not, you only need to use paint thinner and slowly wipe the surrounding scars. It can be easily repaired. 2. If the scratches on the wheel rim are deep, it will be difficult to clean up the stolen goods next to the scratches. At this time, you need to use a small toothpick to clean it thoroughly; 3. Before repairing the scratches on the wheelrim, you must first use tape to paste the place without scars, so as to avoid accidentally painting irrelevant parts; 4. After finishing the tip of the brush, apply a modified paint, and wait for the paint to shrink slightly after drying, it is best to apply it slightly protruding for easy observation; 5. After painting, wait for about a week to make it completely dry.After drying, apply it with water-resistant paper dipped in soapy water to smooth its surface; 6. After wiping with water-resistant paper, wipe it out with a mixture to make it bright, and then wax it.

Many car owners drive fast in order to have the most fun driving.Even if the road is really potholed, it doesn't slow down, and it coaxes the throttle to rush. I never knew that this behavior would hurt.Especially those explosion-proof tires with low flat-to-flat ratio, they are not only thin, but also very hard.When this kind of tire is subjected to a strong impact, it will directly transmit force to the wheel rim.This can easily cause the wheel rim to lose its roundness. Symptoms of roundness of the wheel rim： The most intuitive feeling caused by the roundness of the wheel rim on the driving experience is that the vehicle is biased, the body and steering wheel shake severely, and the degree will increase with the increase of the speed.In addition, the loss of roundness of the wheelrim will also cause a great impact on the chassis suspension, and it will seriously cause deformation or even fracture of the control arms of the suspension. How to deal with the roundness of the wheel rim： Since the current wheel rim material of automobiles is mostly aluminum alloy, once the wheelrim is out of roundness, it is extremely difficult to repair. Even if it is repaired, the wheelrim will not be in the best condition at the factory.Therefore, generally, if the wheelrim is out of roundness, it is recommended to replace it directly.

The finished aluminum alloy wheels are treated with anti-oxidation. The present invention adopts a special cast rod. After forging and heat treatment, the tensile strength is 570MPa, the yield strength is 540MPa, and the elongation is 15%. Compared with the wheels of the same specification, the weight can be reduced to 17.2kg, which greatly reduces the weight of the product. Through the anti-oxidation treatment of the product, the problem of easy oxidation of aluminum alloy wheels is effectively solved, and the requirements of existing trucks for wheels can be met. At this stage, the aluminum alloy wheels forged in our country use 6061 grade aluminum alloy (LD30). Compared with traditional steel wheels, it has the advantages of light weight, beautiful appearance, and good heat dissipation performance. However, due to the limitations of 6061 material, under the existing commonly used forging methods, its good mechanical properties can only reach the tensile strength of 350Mpa, the yield strength of 320MPa, the elongation is about 12%, and the finished product of a 6061 aluminum alloy truck wheel is about 25kg, so its tensile strength, yield strength, elongation and weight can no longer meet the requirements of existing trucks for wheels. Forging: The front surface of the cast rod is pre-forged with a pressure forging machine, forged into a bowl shape, and then the back of the cast rod is forged once with a pressure forging machine, forged into a cylindrical shape, and the cast rod is rolled into a forged billet with a spinning machine. The forged billet is in the shape of the edge of therim. Heat treatment: solid solution treatment of forged billet, solution temperature 465-475℃, solution time 2-3 hours, quenching within 15 seconds after solution treatment, quenching temperature 40-60°C, time 85-95 seconds, aging treatment after quenching, aging temperature 115-125°C, aging time 22-24 hours.

In the 1990s, in order to meet the needs of modern warfare, the lightweight of weapon systems has become the trend of the development of weapons and equipment in various countries around the world. How to reduce the weight of structural parts designed according to the strength index is the key.As an important part of the wheel, it is an important part of how to reduce weight. The weapon systems used in the past were all steel wheels. The steel wheel structure designed according to the strength index is heavy and has low fluidity, so aluminum alloy wheels have become a better choice. Aluminum alloy wheels produced by non-casting methods and their manufacturing methods reduce the weight of the product and improve mobility. The wheels include aluminum. The weight ratio of the elements in the alloy is aluminum 100, copper 1.4-4.8, magnesium 0.4-2.8, zinc 0.3-7, titanium 0.1-0.15, nickel 0.1-1.5. The manufacturing of aluminum alloy wheels is controlled within the above composition range, smelted at 670-720℃, filtered with ceramic tubes, heated and insulated before forging, forged, and the molten metal flows evenly around the ingot through the casting funnel during the water cooling process. The forging temperature is 420-460℃, the heat preservation is 3-5 hours, and the heat treatment is carried out in a vertical quenching furnace. While ensuring the performance indicators of the finished wheels, aluminum alloy wheels greatly reduce the weight of the finished wheels and improve mobility.

When our vehicles need to replace tires, in most cases they replace tires of the same specifications, but I don't know if everyone has ever thought about whether it is feasible if we replace tires of other specifications without replacing the wheels?The answer is yes, as long as you refer to the wheel tire comparison table to select the tires that can be installed. Because the use of tires of other specifications without replacing the wheels involves the concept of the J value of the wheels, let's first understand the J value of the wheels. The width of the rim of the wheel hub is the J value of the wheel hub, in feet. For example, the J value of the rim corresponds to the tire width of the tire.The J value of each rim corresponds to a standard tire width, but in addition, it can also install tires with larger and smaller tire widths.We can choose the selection criteria against the picture above. R im width(J ) Recommended size （mm ） Applicable minimum size （mm ） Applicable maximum size （mm ） 5.5J 185 175 195 6.0J 195 185 205 6.5J 205 195 215 7.0 J 215 205 225 7 .5J 225 215 235 8.0 J 235 225 245 8 .5J 245 235 255 9.0 J 255 245 265 9 .5J 275 265 285 Let's take a wheel hub with a rim width of 7.5J as an example. The corresponding standard tire width is 225, but it can also install tires with a larger tire width of 235 and a smaller tire width of 215.If you still want to install tires with larger or smaller tire widths, you have to replace the wheels .

In daily use, the wheels of the car may be deformed, which will affect the maneuverability and grip of the car to a certain extent. 1. First of all, the wheelrim, as an indispensable and important part of the car, bears the main impact and pressure of the vehicle.Therefore, once the car wheels are deformed, it will affect the reliability of the vehicle and reduce the grip of the car wheels. 2. The deformation of the wheelrim of the car will increase the difficulty of manipulating the car while walking, causing the car to travel unevenly.Even if you drive on a gentle main road, it is inevitable that there will be shaking. 3. After the wheelrim of the car is deformed, there will be a difference in the degree of force of the car tire, which will shorten the service life of the tire. During the long-term use of the vehicle, it will be affected by various external environments and various failures may occur. Automobile wheels are directly exposed to the outside world and bear the main pressure during driving, which is prone to deformation, scratches and other failures. The main material of the wheelrim is aluminum alloy, which has good strength and compression resistance.Therefore, during long-term use, if the metal fatigue occurs, it can easily cause deformation.Most of these deformations are caused by hitting foreign objects.If this deformation occurs for the first time, we can buffer the buffer sponge and other substances in the groove, then restore it with a hammer, and then polish it with sandpaper, spray paint and paint.If the wheelrim is severely deformed or has been deformed and repaired two or three times, it must be replaced in time, otherwise it is very likely to cause the internal fracture of the wheelrim and endanger the safety of the vehicle.

A negative-value rim measures the deviation value between the fixed surface of the rim and the centerline of the rim. Therefore, when a negative-value rim is a larger negative value, it means that the greater the deviation distance of the rim, the greater the degree of outward tilt. When you see the word ”offset", this will have an impact on the performance of the tires and the performance of the wheels, and it will also have an important impact on the performance of the car.Because of the offset, the wheel spacing will be affected.To a certain extent, it will affect the grip of the vehicle tires and the stability of the vehicle.The offset is the value that represents the difference between the stress surface of the rim and the center datum of the rim, in mm. If the stress surface of the rim is outside the central datum, the rim will be a positive rim at this time.Under normal circumstances, the positive wheel rim is used as the original wheel rim of the car.Safe, stable, and does not produce additional air resistance, which is the advantage of positive wheels.On the contrary, when the stress surface of the rim is inside the center datum, the rim will be a negative rim at this time. Due to the large wheel track width, it can provide better stability for the car, and it can also allow the tires to better exert their lateral support ability, which has become the advantage of negative wheels.However, negative-value wheels are usually on the outside of the body, which will cause a certain degree of resistance, and it is easier to scratch other objects.In simple terms, the negative rim can provide greater support. The recording method of the offset value of the wheel rim is generally etxx. ET+20 means that the offset value is +2cm; Et-20 means that the offset value is -2cm.Usually, the maximum value of a positive value is +50, and the maximum value of a negative value is -44.