Can the forged wheels on Taobao be trusted? Ask the expert to recommend a good wheel hub brand.

I have also written several articles about wheels, and people keep asking me to recommend wheels or ask me the difference between casting wheels and forging wheels, but I don't seem to have explained them completely, so today I will take you to understand the difference between wheels made by different processes.

In order to give you a more intuitive understanding, I found three brand wheels of the same size, namely FT502 low-pressure casting wheel hub, FR55 1 spinning casting wheel hub and FF 182 custom forged wheel hub. Let's directly introduce the wheels that let you know about different technologies, and let you choose the wheels that are more suitable for you.

I. Comparison of production processes

The first is low-pressure casting, which is the most common wheel hub on the market. Most automobile manufacturers will adopt low-pressure casting technology to ensure the quality of the wheel hub. Because low-pressure casting means that molten aluminum enters the wheel hub mold under a certain pressure and then condenses under pressure, the whole process is completely controlled by mechanization, the process level is stable, and the most important thing is that the cost is relatively low, and mass production can be realized.

Spinning casting, this process refers to the rotary stamping of the hub on the basis of low-pressure casting, and the internal structure of the hub metal is changed by the pressure of the stamping machine, so that the metal molecules have higher density and fiber arrangement. Compared with the casting process, it has higher strength and toughness. The most important thing is that the cross section of the spinning casting hub is thinner and the overall weight of the hub will be greatly reduced, which is the most unique advantage of the spinning process.

Forging process wheel hub, Gao Fushuai in wheel hub, why is forging wheel hub expensive? Because the forging process uses thousands of tons of hot die forging press to forge an aluminum alloy into a wheel hub with high pressure, the molecules between the alloys will be closer than those cast by spinning, and less aluminum will be needed, but the strength will be higher and the weight will be lighter.

Therefore, in general, low-pressure casting is the mainstream hub production process at present, and spinning casting is lighter and stronger than low-pressure casting, which is also widely valued in the market. Forging represents the highest technological level of the hub, with high strength, light weight, but expensive price.

Two. performance comparison

I don't know how to compare the performance of the wheel hub in words. I found a comparison chart of industrial performance. Let's make do with it:

Three. Comparison of hub thickness and weight

As shown in the figure, the thickness and weight of three different tires perfectly illustrate the difference between the three processes. I believe it goes without saying that everyone knows that the thinner the better. Why are rotary casting wheels the hottest in the market? Because not only the price is moderate, but also the data of forged hub is almost equivalent to forged hub in weight and thickness, but it is a big step away from cast hub. As for how to choose, it depends on how you decide.

Four. Comparison of hub appearance

First, look at the front comparison diagram of the wheel hub:

As can be seen from the above figure (note the red arrow), FT502 and FR55 1 are both made by casting process, that is to say, molten aluminum is poured into a mold, and after solidification, there will be a demoulding step, so there will be obvious draft angle on the side of the hub spoke. However, since FF 182 is a forging process and there is no die setting angle for the hub spokes, the spokes are thinner and the definition is clearer.

The following is a comparison of the back of the wheel hub:

As can be seen from the figure, both low-pressure casting and spinning casting will carry out the design of cutting and stealing light on the back of spokes, on the one hand, for the flow of aluminum liquid in the mold, and on the other hand, for the purpose of reducing weight. However, the mounting surface of the forged hub has been slightly treated.

Verb (abbreviation of verb) price comparison

Ft502-19 * 8.5j "1168/piece (low pressure casting)

FR 551-19 * 8.5J "2188/piece (rotary casting)

FF182-19 * 8.5J "3650/piece (custom forging)

There is nothing to say, because the prices of wheels of different brands and different processes are different, for your reference only.

Finally, today's simple comparison of three kinds of wheels is over. Let's compare the three mainstream wheels on the market. I hope you can use this article to find the right wheel hub. If there are still unclear questions, or any articles related to car modification, please feel free to write and leave a message.