China's automakers are now building new cars every day. The assembly shop is busy. Young people around the age of 30 have already exchanged several cars. In addition to ample funds, the remaining cars are Is it bad? How much can a car's life last?
A car has gone through more than a thousand tests and tests from the design to the factory, and the assembly process is changing with each passing day. It is almost always a zero-error machine CNC assembly. The engine drive shaft gearbox and other core components are all high. Wear-resistant high-purity alloy materials, so the current car life, as long as the use of open, it is no problem opening a dozen years, but for the good face of the Chinese people, the car is a tool for the facade, when a car has It looks a bit shabby, and even if it works well, it will take a change of car.
The depletion of the car is mainly gears, tires, transmission shafts, belts and other components that have been required to run at a high speed. Although the engine has always been the highest speed, its internal piston, pinion, and cylinder manufacturing process is quite good, sealing and oil Lubrication, so the engine's core components have always been very durable, but tires, belts, clutch plates, brake pads and other parts are seriously depleted.
The most serious wear parts are brake pads and clutch plates. The clutch plate is an important component for controlling the separation and engagement of the engine power shaft and the gears of different gears. Because it is in contact with the high-speed operation of both, it wears. It is very serious, especially when the novice is driving, because it is not familiar with the vehicle, and the engine speed is not good, large wear will be easily caused. When the speed is too high, the gear ratio will be directly switched, and the gear will be broken, and the engine will be scrapped. Therefore, after a period of novice tens of thousands of kilometers should be replaced. The brakes are the core of the brakes. By stopping the vehicle with frictional braking with the hub, it wears even more severely. Replace the brakes when you feel that the brakes are not sensitive. But after all, it is a machine that naturally has a service life. When it feels that the car starts to accelerate, it appears to be old and weak, the concentration of exhaust gas is large, the operating sound is too loud, and the time limit is large enough to consider changing the car.
Sheet metal fabrication processing is formed by laser cutting or stamping process, shear and bending, bending, bending, welding, riveting. The Sheet metal fabrication used are cold-rolled plate (SPCC), hot-rolled plate, galvanized plate (SHCC) (SECC, SGCC), copper (CU) brass, copper, beryllium copper, aluminum (5052), stainless steel. Sheet metal fabrication processing steps: according to the parts drawing (3D) expanded into a plan (2D), laser cutting or die stamping shape, CNC punching each bending part, should pay attention to the direction of the burr of the workpiece. Then the students are welded or riveted (some). Surface treatment after processing: electroplating, passivation, sand blasting (powder), anode treatment. Products are generally made for the connection and the outer cover. Applications in robotics, drone, communications, medical devices, industrial automation equipment.
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