As we all know, Qingming Festival is one of the twenty-four solar terms in the lunar calendar. At the turn of mid-spring and late spring, that is, the 108th day after the winter solstice, the solar terms are established according to the lunar calendar, which has no leap years.The traditional Ching Ming Festival of the Han people in China began in the Zhou Dynasty, and it has been two thousand five...
According to the purpose, it can be divided into carbon structural steel and carbon tool steel.The carbon content of carbon tool steel is between 0.65 and 1.35%. After heat treatment, high hardness and high wear resistance can be obtained. It is mainly used to manufacture various tools, cutting tools, molds and measuring tools (see tool steel). ...
Compared with ordinary carbon structural steel, high-quality carbon structural steel has a lower content of sulfur, phosphorus and other non-metallic inclusions.According to the different carbon content and use...
Plum blossom elastic pads are generally polyurethane materials, and the life of the coupling is also the life of the elastic.Because elasticity has the effect of buffering and damping, it is used more in situations with strong vibration...
The structure of the diaphragm coupling is mainly composed of stainless steel sheet metal (steel sheet), half coupling, intermediate sleeve, compression element, bolt lock nut, limit washer and so on. ...