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How to judge the manufacturing quality of the carbon fiber frame and wheels?
2016-06-14
A carbon fiber frame quality in the end how? This is a permanent topic in the end what's good and bad, how to judge?
1, on the carbon cloth what T1000, T800, said many times, China still ban foreign T800 grade carbon fiber precursor material, 2016 and was therefore by law enforcement before the Japanese have been sentenced, so the domestic carbon skeleton said imported T1000, T800 carbon cloth, what registration of foreign brand operation, fill key positions reinforced rigid, many say in the end they know how much credibility to judge.
2, on the quality testing,, that just after the SGS standard inspection certificates like Taiwan, not every frame is produced after quality testing. As for the quality of some brands, like whether aftermarket fly, then their understanding.
3, on the quality of the carbon frame identification, a lot of people get the carbon frame to frame some of the inner wall is smooth, etc. The quality of the frame is determined. In fact, the quality of the frame, after which the finished product, very often do not see the quality, can only look at some of the details of it. However, after the frame just taken out from the mold, it is able to see some clues the. So we see some people visiting carbon frame lines to take pictures, but did not elaborate here. In the frame die has taken some good production technology, mold and must eventually becoming maintenance, carbon cloth layup bad frame, only to see here are the qualified production technology and process, surface some resin residue and little pits in the putty filled the grinding stage. And some frame after removing the bag surface crater, indicating that the carbon fabric and resin curing bad, wall density is not enough, is bound to affect the rigidity and strength of the carbon skeleton, which is a lot of domestic garbage carbon skeleton soft reasons, even insufficient strength.
4, on the rejection rate of carbon frame production process, it is inevitable that waste, defective products, these frames after doing it, regardless of plant size, attention to quality and credibility of the plant is to be destroyed, and it is responsible for the consumer. But it does have the factory defects and scrap frame out to sell, as to how much the kind of plant proportion, not easy to say.
Besides carbon ring production line, some conventional production process not on the map. Some say it
The first figure, the so-called black brake side, after layup carbon cloth, attached to the outer layer, and then put together one piece mold.
Side brake testing machine, our standards are continuously tested more than 15 minutes
Strength test, under certain tensile strength test
Carbon ring spokes automatically opening machine
Computer-sectional view of the spokes carbon ring opening of the machine, where setting the standard rim, spoke holes and distribution point of view, by the automatic drilling machine spokes empty.
Finally, add that carbon ring carbon skeleton are the same. Is mold maintenance, a lot of people think that carbon fiber frame, the production cost of carbon is carbon knife rim cloth, resin material, labor and other costs, but do not know mold maintenance costs are very high, and some brands of mold maintenance requirements very strict, frequency of maintenance is the life of the mold itself recommended maintenance period, often several times a few times.
On top of said carbon skeletons from the mold out of the crater bags, while others die because not to repair caused. And long carbon frame carbon ring ordering cycle, but also because some mold maintenance takes time. Finally, the domestic carbon frame carbon to carbon fiber ring all these factories have their own mold CMC is minimal. The so-called carbon fiber "workshop" factories, the price is very cheap, it certainly could not bear the cost of the mold must be in accordance with the maintenance period, it will inevitably cause some rubbish quality carbon frame, although most will not break your normal riding and planes, but encountered force impact of time? How to define the strength?
There are poor frame rigidity, accuracy, also inevitable. The difference in this regard, except God knows, can only see the factory conscience!
Source:tieba.baidu.com
Author:chorus
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