Do you know these knowledge of wheel casting process?


Casting wheels, in a nutshell, is the technology of pouring aluminum liquid into a mold and cooling it into shape, so what is the difference between casting and it? Why is the price of casting wheels higher than casting, more and more modification enthusiasts as the choice of replacement wheels? Today we will talk about the wheel production process - casting.

  Casting wheels, in a nutshell, is the technology of pouring aluminum liquid into a mold and cooling it into shape, so what is the difference between casting and it? Why is the price of casting wheels higher than casting, more and more modification enthusiasts as the choice of replacement wheels? Today we will talk about the wheel production process - casting.

  Cast wheels

  If the molding method of casting wheels is compared to a popsicle: sugar water is poured into a mold and cooled into a variety of shapes, then casting wheels is to create a sword, there is an idiom that can well describe its quality: a hundred refinements into steel, is the craftsman hammer after hammer to hit the sword billet, the impurities inside the discharge, tens of thousands of blows to achieve a white . Only back to the wheel production, is thousands of tons of forging machines "a hammer to determine the sound".

  Casting is a use of forging machinery on the metal billet pressure, so that it plastic deformation to obtain a certain mechanical function, a certain shape and scale forgings processing methods, forging (casting and stamping) one of the two major components.

  Advantages of casting.

  After casting can eliminate the cast metal looseness, welding holes, forgings are generally better than the mechanical function of the same material castings. Machinery load high, harsh working conditions of the important parts, in addition to the shape of the more simple available rolled plate, profile or welded parts, more forgings.

  Casting can be divided into milling forging, die forging

  1、Milling forging

  The use of impact or pressure to deform the metal in the upper and lower two against the iron (anvil) to obtain the required block billet, the cake material after heat treatment and then through the machining center milling and forming, but because the cake material is thick and poor hardenability in the heat treatment process, resulting in the product material function may not reach the level of casting process quality. And the process of machining molding will block the casting flow, resulting in the forming of the wheel products can not really realize the lightweight.

  2、Die forging

  Die forging is also divided into open die forging and closed die forging. The metal billet is deformed by pressure in the chamber of the forging die with a certain shape to obtain forgings, because the forgings produced under this process belong to the shape of the die once formed, the product wall thickness is uniform, and the heat treatment is strong, so the wheel formed by die forging has good quality and light weight. Of course, the die forging process requires the opening of a series of special molding dies, so its products are not expensive.

  Die forged aluminum wheels can be planned with thinner spoke thickness and rim thickness.

  After the above understanding, we know: casting wheel is now the production of aluminum rims, its outstanding strength is high, higher security, plasticity, together with light weight, good heat dissipation, saving fuel; the disadvantage is that the price is slightly higher, the production cycle is longer, so what are the advantages of casting wheels compared with the original casting wheels?

  1、Sturdy and durable more secure

  Cast aluminum ring is 1-2 times stronger than cast aluminum ring, 4-5 times stronger than the general iron ring, so more robust and resistant to collision, toughness and fatigue strength are also significantly better than cast wheels, not easy to crush fracture, stronger security.

  2、Lightweight and more fuel-efficient

  Compared with casting, the same scale of casting wheels can be about 20% lighter in weight, and 1KG lighter on the wheel, it can improve 10 horsepower. Other lightweight also makes the suspension response speed has significantly improved, the suspension system response speed is faster, the handling of road potholes naturally more freely.

  3, fuel saving, heat dissipation function is good

  According to Japanese experiments, 5-seat car weight reduction of 1kg per year or about 20L gasoline savings, and the American Society of Automotive Engineers published a study report pointed out that the casting wheels, although more expensive than the general casting wheels, but in the long run, the car traveled to 1-3 million kilometers to recover the cost. In addition, cast wheels are better heat dissipation, long-distance high-speed travel, can make the brake drums and tires are not easy to age, adding life and reducing the risk of tire blowout.

  4、Better control function

  In the case of steering and loading without affecting the upgrade of cast wheels, if the width of the hub is added, vehicle acceleration, braking and cornering sensitivity will be more significant progress, whether from a standstill to the start, or speed up in the march, will be more light and fast, regardless of the corner into the corner or out of the corner, the vehicle will be spontaneous.

  To sum up, cast wheels are better than cast in terms of function and quality, and the improvement in vehicle function is significant, but the price is also visible progress compared to cast, so it is still necessary to make the corresponding selection based on personal needs. The need to clarify is that the selection of cast wheels, must pay attention to the wheel brand, or buy some niche brands of "cast" wheels may well become "broken made" tragedy, safety issues can not be careless.