The turbocharger is classified as a high temperature component, because the gas that drives it runs directly from the exhaust gas discharged from the cylinder, the temperature can be as high as 900 ℃ -1000 ℃, and under full load, the speed of the turbine can reach 180,000-200,000 per minute Therefore, the efficient and stable smooth oil can be directly reflected from the engine. The existence of turbocharging has higher requirements for maintenance than ordinary cars.
The corrosion resistance of these steels comes from "chromium", which ranges from 11.5 to 18%. The higher the chromium content, the higher the carbon content to ensure the composition of martensite during heat treatment. The above three types of 440 stainless steel are very It is rarely considered as an application requiring welding, and the 440 type of molten metal is not easy to obtain.
Due to the advancement and development of technology, computers have become indispensable and necessary tools for people in work and daily life. Furthermore, due to the high-functionalization of electronic products, the rapid development of high-speed and modernization, gradually notebooks The trend of computers has hit senior business people and gradually spread to general users. The line-headed notebooks are mostly of a flip-up type. In order to meet the design considerations of thinness, smallness and light weight, and the hinge structure used must also change according to the thinness and smallness of the notebook, they are generally designed as a base consisting of the main body and keyboard And the upper cover composed of the display screen and the cover body is composed of two parts. When the notebook computer is not in use or in a closed state, the upper cover is closed on the base, and the upper cover needs to be lifted up to an appropriate angle during use to facilitate operation.
With the development of thinner and lighter notebooks, the structural design of the rotating shaft is also constantly changing, from the classic gasket structure rotating shaft hidden in the notebook to the gear structure rotating shaft with a shell now, allowing the notebook to be able to switch angles flexibly when flipped and More portable, then let's talk about the role of the screen hinge with a shell?