Recently, the Shanghai Consumer Protection Committee announced the sampling results of Shanghai household car brake pads. As many as eight unqualified samples of 46 samples, the failure rate was as high as 17.39%.
The Municipal Consumer Protection Committee pointed out that the brake pad is an important safety component in the brake system of the home car. If the production of crafts and quality control is not good, there will be problems such as partial wear, back plate breakage, material collapse, extreme heat decay, etc. There are serious hidden dangers to driving safety.
The reporter learned from the Municipal Consumer Protection Committee that the Municipal Consumer Protection Committee purchased 46 samples of brake discs for household car disc brakes in this test, involving 14 brands, including Case, Wuzhong, Puxing, etc. In the three auto parts market, there were 35 purchases in 9 stores, and 11 merchants in the online trading platform such as Jingdong Mall and No. 1 shop purchased 11 pieces, ranging in price from 65 yuan to 770 yuan. The Shanghai Motor Vehicle Testing Center was commissioned to test the friction coefficient of the brake pad, the allowable deviation of the specified friction coefficient, and the wear rate.
The test found that the city's household car brake pads mainly have two major problems, such as the friction coefficient at high temperature and the unacceptable deviation of the specified friction coefficient.
Among them, 5 of the 46 samples have a friction coefficient that does not meet the standard under high temperature, and the friction coefficient decreases linearly at high temperature. The braking performance is drastically reduced in mountainous roads and high temperature and high speed conditions, which will seriously affect the safety of vehicle driving. . It involves the “Jindelai†high-end ceramic brake pads produced by Shandong Jinlutai Auto Parts Co., Ltd.
The test also found that a total of 8 samples of the coefficient of friction allowable deviation does not meet the standard. The excessive fluctuation of the friction coefficient with temperature will affect the comfort of the car and even affect the brake balance.
The Municipal Consumer Protection Committee reminded that when replacing the brake pads of household cars, the outer packaging of the brake pads, the thickness, size and weight of the brake pads, and the outer surface of the brake pads should be checked. The thickness of the backing plate is not enough, which may cause the brake pads to break and cause tragedy.
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