Behind the high failure rate of imported brake pad

2022-08-04
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Behind the high failure rate of imported brake pads,

brake pads are the most basic and important parts of the automobile braking system. The quality of brake pads is directly related to driving safety. However, a recent CCTV investigation on imported brake pads is shocking

according to CCTV's weekly quality report, recently, the quality inspection bureaus of 28 cities, led by the General Administration of quality supervision, inspection and Quarantine of the people's Republic of China, conducted sampling inspection on imported brake pads. The results showed that the overall unqualified detection rate of imported brake pads reached 48.4%. The products involved included more than 60 brands from 18 countries or regions of origin, including Land Rover, Toyota, Mercedes Benz, Audi, Volkswagen and other brands

the spot check results showed that the quality inspection agency spot checked 71 batches of imported brake pads from the port, and 8 batches were unqualified; 388 batches were sampled from the circulation field, and 211 batches were unqualified; 8 batches were randomly selected from the e-commerce platform, and 7 batches were unqualified

among them, the nominal brands are Land Rover, Hyundai, Toyota, Mercedes Benz, Audi, Volkswagen, timington, Kia, Volvo and BMW, and there are more than 10 batches of products that fail to pass the spot check

why is the unqualified rate of imported brake pads so high? What does such a high failure rate mean

multi brand and multi item inspection failed

it is understood that the supervision and random inspection of imported brake pads by AQSIQ is based on China's current national mandatory standard GB brake linings for automobiles. Test items include: appearance quality, dimensional tolerance, friction performance, shear strength, impact strength, thermal expansion rate, compression strain, packaging marks, etc

unqualified items include: marks (174 batches, accounting for 77.0%); Friction performance (80 batches, accounting for 35.4%); Shear strength (8 batches, accounting for 3.5%); Compressive strain (3 batches, 1.3%)

among them, friction performance and shear strength are the two most important test items, because they are directly related to the quality of brake pads

according to the insiders, the friction performance test means that the surface coefficient and wear rate of the brake pad friction materials need to be kept within a certain range under different test temperatures. 4. The attachment range of the testing machine

in the friction performance test, a total of 21 brands of products were unqualified, including Mercedes Benz, Audi, Toyota, Lexus, Hyundai, BMW, Land Rover, Cadillac, Ford, jeep, Honda, Infiniti, Nissan and other famous brands

shear strength refers to the bonding strength between the steel back plate of the brake pad and the friction material and the strength of the friction material itself. If the back plate of the brake pad and the friction material break away from the friction material during emergency braking, it may bring hidden dangers to safe driving

in the shear strength test, 8 brands of products including Toyota, Hyundai, Audi, BMW, Land Rover, Mercedes Benz, Subaru and qinmington failed. In addition, this sampling inspection also found that a large number of brake pads did not comply with the provisions of China's national standards on the signs, such as no Chinese information or incomplete information provided

fake and shoddy brake pads flooded the market

the column of daily quality report quoted the views of relevant experts, saying that behind this series of unqualified brake pad brands, foreign manufacturers have ignored China's standards

the reason for the high failure rate may be that, on the one hand, there are differences in individual items between foreign standards and domestic standards, and some imported brake pads cannot pass the domestic inspection according to foreign standards, such as mark inspection; On the other hand, it may also be caused by different places of origin of imported brake pads. For example, the places of origin are from Europe and Southeast Asia respectively, and the workmanship in Southeast Asia may be worse, which is more prone to unqualified conditions

in addition to the problems of suppliers, there may also be reasons for the price reduction of joint venture brands. As the whole vehicle is currently reducing prices, in order to reduce costs, the quality of relevant parts may also decline

in fact, this is not the first time that the quality inspection agency has obtained a high unqualified rate of imported brake pads. As early as April this year, it was reported by the media that Guangdong entry exit inspection and Quarantine Bureau conducted a spot check on the import and export commodities of Guangdong Province in 2015, and conducted a spot check on 98 batches of imported brake pads at relevant ports, domestic markets and places where imported products are used, with a failure rate of 91%

in the opinion of automobile experts, the phenomenon of extremely high unqualified rate in sampling inspection is closely related to the current automobile parts market and the existence of a large number of fake and shoddy products in imported brake pads. In addition to the unqualified imported brake pads, there are also some fake brake pads, which have lowered the overall qualification rate

the process of manufacturing brake pads is simple and does not require high technical content, but the profit margin is huge. In this context, some unqualified black workshops took risks one after another

it is not uncommon for such a case experimental machine to be developed in the initial stage. In early December 2016, the police in Shayang, Hubei Province reported that a criminal gang producing and selling fake and shoddy brake pads had been destroyed and four suspect had been arrested. According to investigation, the gang produced and sold more than 320000 sets of fake and shoddy brake pads, with a market value of more than 60million yuan, including counterfeit products of Honda, Toyota, Hyundai, Volkswagen, Nissan and other brands. According to the suspect, a set of counterfeit well-known brand brake pads costs about 300 yuan, but the production cost is only about 20 yuan

supervision is difficult

many insiders introduced whether the imported brake pads with high quality are used in e-commerce, 4S stores and other circulation channels, and whether there is a situation of shoddy products being replaced by good ones, which need to be supervised and inspected by the relevant national departments. However, the supervision is quite difficult

at present, some fake brake pads in the market may not be recognized by some professionals, especially by ordinary consumers. The quality of brake pads with different quality can only be detected in the actual inspection or use process

sometimes, counterfeiters will "test" products, but such "testing" is difficult to reassure people. According to the case reported by the police in Shayang, Hubei Province, the suspect could not get the forged products to the relevant departments for qualification appraisal, so he installed the brake pads on his own car for experiments, and they believed that the standard of "success" of the products was "no major safety problems"

"the difference between genuine and fake brake pads is that under extreme road conditions, fake brake pads may have no problem even stepping on the 10 foot brake, but No. 11 causes lawsuits, expensive recalls, warranty complaints, and reprocessing of the foot, but real brake pads will not have problems. However, under normal road conditions, fake brake pads are not as good as real brake pads except for their service life." Wangyinglai said, "in this case, some consumers are trying to be cheap, knowing that it is a fake brake pad, they will still buy it. However, once there is a problem, it is often a big problem endangering driving safety."

how can we reduce the fake and inferior brake pads in the market? Fuzhiyong said: "when the cost of violating the law is very low and no one is investigated, counterfeits and shoddy goods will be rampant. Therefore, it is a key link for the regulatory authorities to carry out special inspections in large 4S stores and chain stores nationwide. Roadside repair shops are often a blind spot for supervision, so it is necessary to strengthen self-examination and self correction in the industry."

if the traditional requirement of reaching a specific zinc content is still taken as the standard, according to CCTV, in view of the low overall pass rate of imported brake pads, AQSIQ has organized another key supervision and spot check on the quality of imported brake pads in 2016, and will take severe punishment measures for unqualified products according to relevant laws and regulations

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