The sealed garbage truck is a transposition vehicle that collects and transits the garbage to avoid secondary environmental pollution. The requirements for the sealed box cover of sealed garbage trucks are as follows: The sealed box covers cannot exceed the excessive position of the vehicle body. This will directly affect the driver's safe driving and cause potential safety hazards; When changes are made, care must be taken to ensure that the center of gravity of sealed garbage trucks does not change during loading; no leakage or dusting is required during the whole transit period; the top of the sealed garbage truck The system can be normally retracted and opened in a relatively short period of time, and will not receive any influence when carrying out garbage loading and unloading; the closed tank lid should not occupy the internal space of the car body, and the weight must also be It cannot be too big, or it will cause overload or decrease in the efficiency of the entire transportation. This can lead to the cylinder of the sealed garbage truck. There are two big factors in the situation of radon: 1. If the routine maintenance of the sealed garbage truck can be done, the engine maintenance will be done, which will extend the service life of the vehicle engine. Conversely, not only do maintenance on time and overtime maintenance engine, when the quality of the oil is getting worse, more and more impurities, it will cause the engine cylinder wear increased. 2, too late and early ignition of the sealed garbage truck is caused by the situation of a violent earthquake, the temperature of the vehicle engine will be significantly increased, resulting in the piston off and the cylinder was abandoned. In the initial performance, there will be a relatively serious case of helium burning oil. 3, when the sealed garbage truck engine oil filter, oil and oil air filter, etc. during the selection and use of the process, there is an inappropriate time, then the gas impurities into the vehicle cylinder can not be better After the various types of dust particles entered the cylinder of the sealed garbage truck, the cylinder wear increased. After the poor quality of the oil filter used by colleagues, it is impossible to have a good filtering effect. When some false oils or used oils do not match the oil level of the vehicle, not only can a good oil film protective layer be formed on each friction surface of the vehicle engine, but also helium or pull cylinders can occur. Case. 4. As the mileage driven by the sealed garbage truck keeps increasing, the wear between the cylinder and the piston of the vehicle will increase, and the degree of grinding will increase to a considerable extent. The cylinder of the car will cause the situation of cylinder helium, and then there will be burning oil. When the valve seal of the vehicle is damaged, the burning of oil will become more and more significant at the same time.
High temperature alloy is divided into three kinds of material: 760 ℃ high-temperature material, 1200℃ high temperature and 1500 ℃ high temperature materials, the tensile strength is 800 mpa. On other words,it refers to the metal material worked well in the condition of 760-1500 ℃ or above. It owns excellent high temperature strength, good resistance to oxidation and thermal corrosion resistance, good fatigue properties, fracture toughness and other comprehensive performance, this kind of material has became an irreplaceable key material in military and civilian gas turbine engine hot end components . According to the relevant theory, 760 ℃ high-temperature materials, according to the matrix elements,can be mainly divided into high temperature iron base alloy, nickel base superalloy and cobalt-based super alloy. According to the preparation process,it can be divided into deformation and high temperature alloy, casting high temperature alloy and powder metallurgy super alloy. According to the solid methods,it can be divided into solid solution strengthening, precipitation strengthening and oxide dispersion strengthened with fiber reinforced type, etc.
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