D1504 Brake Pads

The cause of car brake failure

The brake system of a car is an important system related to the safety of driving a car. The failure of the brake system is a very dangerous thing. Braking failure is the loss of braking performance, including complete failure and partial failure; complete failure is not a little brake effect, partial failure is to some extent lose braking performance, it can be said that the brake is not working, can not be in short distance Stop the car inside.

If there is a brake failure in the newly replaced brake pad, this may be caused by artificially getting grease on the surface of the brake pad during installation. After removal, it is possible to detect the presence or absence of oil. In this case, it is necessary to replace it immediately. Brake pads. If the brake is not working after a period of driving in the car. If this happens in the road area water, it may just be the brakes when passing the puddle. The high temperature brake pads and the plate will quench with cold water, forming a hard oxide layer on the surface of the brake disc, and then braking normally. It will return to normal several times, but if it still can't be effectively braked, it may need to repair the brake disc, and it can only be replaced seriously.

Automobile brake pad  brake discs detection method

The importance of the brake pads of a car to the vehicle is self-evident. When it comes to the test of the brake pads of a car, the first thing to say is the mechanical equipment and standards for the test. At present, the national standard for the detection of the friction coefficient of the brake pad is realized by a constant speed test machine. The constant speed test machine detects the friction coefficient of the brake pad instead of taking a complete brake pad for inspection. Instead, it cuts two 25m*25mm small squares from the brake pad friction block, then smoothes it and puts it on the testing machine. The specified location.

The rotational speed of the tester disk is constant, the ambient temperature is constant, the pressure applied to the friction block is constant, and the sample is a small friction block rather than a complete brake pad. When testing for temperature rise, the disk rotates at a constant speed of 5000 rpm at each temperature point. The test opportunity records the average friction coefficient at each temperature point. When the temperature is detected, the test machine disc rotates at a constant speed of 7500 rpm, and the test machine also records each The average coefficient of friction at a temperature point.