Vehicle brake disc is also divided into many kinds, these brake disc structure and material you know

brake disc, also called brake disc, is a disc brake on the friction couple, the vehicle moving with the wheel rotation. When the vehicle braking, the caliper clamp the brake disc friction brake, to let the vehicle slow down or stop the role. A qualified brake disc, in addition to having the required strength and stiffness, should also have as strong and stable friction coefficient as possible, as well as appropriate wear resistance, heat resistance, heat dissipation and heat capacity. First, the design structure of the brake disc classification 1. Solid plate The solid disk is the most common one, but also the original factory supporting the most used one. Its structure is relatively simple, the production cost is relatively low. Semi Trailer supplier says The advantages are relatively stable, strong and durable, the use of regular replacement, maintenance costs are considerably lower; the disadvantages are tiny friction coefficient, poor high temperature resistance, low safety coefficient under high-speed braking or continuous braking, and relatively elevated fuel consumption. Under normal circumstances, solid brake disc is more installed in the rear wheel of the vehicle or the front wheel of the minicar with light load. 2. Ventilation tray ventilation disc can also be called hollow disc, its interior is hollow, cold air can pass through the middle to cool down, longitudinal can see the ventilation hole, internal structure is intertwined, previously is commonly through the design, later with the progress of vehicle technology, gradually changed to bend and pillar channel, used to improve the heat dissipation function. The ventilation disc can be regarded as an advanced version of the solid disc. To a certain extent, it can prevent the overheating of the brake disc and reduce heat attenuation, resulting in better braking effect. At the same time, because the ventilation disc removes part of the disc body, the dead weight is reduced to a certain extent, and the inertia of rotation can be reduced. But the structure is more complex, manufacturing and maintenance costs are higher than solid disk. Ventilated disc is currently the most common type on the market, suitable for both the front and rear wheels of the vehicle. 3. Punch plate The perforated disc is drilled on the surface of the ventilated disc to obtain a stronger heat dissipation effect. It is typically used for top-performance sports coupe, which can improve the thermal decay resistance performance. In addition, due to the existence of holes, the braking effect can be improved to a certain extent. From the appearance, the perforated disc is also relatively cool, deep appearance association owners like. But with the continuous upgrading of brake disc materials, some people think that there is no need to punch holes from the brake disc: after the disc is punched, the strength of the brake disc will decrease, more than one hole strength is weak; the design of the hole needs to consider the balance of the brake disc. If the distribution is not uniform, there is a certain impact on the moving vehicle spindle; because of the existence of the hole, the friction area of the disk decreases, and the friction force also has a certain loss. After drilling, the heat conduction area of the brake disc surface is also reduced, which to a certain extent offsets the heat dissipation effect of the vent. In addition, the hole around the use of a period of time due to the role of stress is easy to appear fine marks or cracks. As a result, these people advise those who prefer quick cars or off-track car owners to avoid the use of punches. 4. Scribing disk The function of the scribing disc is to dissipate the powder produced by friction between the brake pad and the brake disc as soon as possible through the scribing groove, so as to avoid the dust on the brake disc to produce rolling friction affecting the braking effect, in order to enhance the friction between the brake pad and the brake disc, to maintain a good braking effect. Secondly, the performance of heat attenuation and water attenuation is also excellent, heat dissipation is relatively quick, more suitable for vehicles that frequently run on mountain roads. Of course, the manufacturing cost is high, the matching brake pads should also choose high specifications. The same as the punched disc, the scribing disc has higher requirements for the material and production process of the brake disc, which requires comprehensive consideration of the design. In addition, the scribing disc obtains higher friction force at the same time, to a certain extent, it also means that the wear degree of the friction plate increases correspondingly. 5. Punch the marking plate Also known as "top speed disc" or "modification disc", it is normally fitted to high performance cars such as racing cars, sports cars or sports vehicles. Although it may appear to be a combination of a perforated disc and a striated disc, the holes in this type of disc may not be completely drilled, providing heat dissipation while maintaining the structure of the disc. Its advantages are that it can meet a variety of road conditions, with strong thermal attenuation, water attenuation performance, excellent heat dissipation; the disadvantage is that the friction plate wear larger, the brake disc material and processing requirements are relatively high. If you do not have the corresponding technology or no professional guidance, it is best not to DIY, otherwise the brake disc fracture, the consequences are unimaginable. 6. Wave plate In contrast, this kind of brake disc is rare, and the ordinary circular brake disc is different. The wave plate uses a wavy circular design. The biggest advantage is more lightweight and better heat dissipation performance., of course, more significant is the visual design effect, commonly used in top-end models. Two, brake disc material classification 1. Cast iron brake disc In general, the more common brake disc material is gray cast iron 250, HT250 for short, equal to the United States G3000 standard. To say the advantages of cast iron brake disc, the most obvious is low cost, superior strength. Basically every steel factory has the ability to produce cast iron brake disc. This material is more durable, has a higher melting point, friction generated heat will not make it easy to soften; the disadvantage is that it is easy to oxidize and rust, and the thermal attenuation performance is slightly poor at elevated temperature braking. At present, more than 90% of the vehicles on the market are cast iron brake discs. 2. Ceramic brake disc The ceramic here is not the usual kind of ordinary, but carbon fiber ceramics, made of carbon fiber and silicon carbide composite ceramics at a high temperature of 1700℃. The carbon fiber ceramic brake disc is extremely efficient and stable against thermal decay, numerous times more than ordinary brake disc, but less than half the weight of an ordinary cast iron disc. The disc produces maximum braking force immediately during the initial braking phase and provides faster response, shorter braking distance and greater durability than conventional braking systems. Carbon fiber ceramic brake disc is a relatively top material at present. Due to the particularity of manufacturing process and materials, the price is relatively costly, so it is commonly used in high-end sports cars, ordinary vehicles are difficult to get a wide range of promotion. At present, some manufacturers in the market also integrate cast iron and carbon fiber ceramic two materials, and launch a cast iron brake disc with a surface treated with carbon fiber, which combines the advantages of cast iron and ceramic two materials, and the price is between the two.