The friction between the two tires of the automobile brake tube hard tube will cause the brake to run off. Uneven tire pressure at both ends, uneven braking force of the two wheels, suspension problems (such as unequal or one side of the shock absorber spring, loose ball joints, deformation of the connecting rod, etc.), and unequal wear of the brake pads will cause the brakes to deviate scene. When one of the car tires is damaged, a pair of tires must be replaced (replace both ends if one is broken), unless the tire to be replaced is a new tire or is very lightly worn, and the markings on both ends of the tire must be common. The car brake tremor is mostly caused by abnormal and abnormal wear of the brake disc. Use a dial indicator to measure the axial runout of the brake disc, which should be less than 0.05 mm. If it exceeds this specification, the brake disc must be replaced. Remove the brake disc and measure the swing. If the swing of the hub exceeds 0.10 mm, partial wear of the brake disc will result. Consider replacing the hub, bearing and brake disc.

Conductive plastics also have many applications in other aspects, such as: using its sensitivity to electrical signals, it can be used to make sensors, conductive plastics can absorb microwaves, and it can be modulated into aircraft coatings to also have an invisible effect to avoid radar. At the same time, it can also exert its anti-corrosion function in rockets, ships, oil pipelines, etc. In the development of nanotechnology, conductive plastics may be the best material. At present, one of the inventors of conductive plastics, American physicist Professor Mark Dilmide, is studying the connection and application of conductive plastics and nanotechnology. Xing woven traditional conductive materials and conductive fibers electrostatically to create nano-scale fibers and nano-electronic circuits. As we all know, the diameter of a human hair is 50,000 nanometers, and the nano-material polyaniline fiber that is being developed by the research group led by Professor Mark Dirmid is only 100 nanometers in diameter. This is currently the world’s thinnest fiber, only hair. 1/500 of the wire diameter. If you connect nano-conductive fibers with nano-electronic circuits, computers can be made very small.

The hydraulic hose is composed of a rubber layer on the outside and a steel wire woven layer on the inside. Depending on the receiving pressure of the hydraulic hose, the number of steel wire layers inside is different. Usually, the steel wire layer is from 1 to 6 layers, and the pressure can reach up to 60MPA. . The inner rubber of the hydraulic hose is made of mineral oil, bio-oil, and good swelling composition rubber, and the outer layer is abrasion-resistant and anti-aging rubber. The center is the surrounding layer of high tensile steel wire. Suitable media for hydraulic hoses are: mineral oil, oil-water mixture, polyethylene glycol base oil, composition fat base oil, rapeseed oil, etc. The suitable operating temperature of commonly used hoses is: -40℃-100℃, and the maximum temperature is 125℃. In the use of the device, the hose needs to pay attention to several issues. The hose is too long, which affects the appearance and adds cost; the hose is too short, when it is compressed and expanded or shortened, there is no room for flexibility, which will cause the hose to be damaged; When installing the hose, don't let it twist, otherwise it will damage the hose or loosen the joint when under pressure.