Traps should first be selected to meet the optimal operation of the steam heating equipment, and then consider other objective conditions, so that the choice of the trap you need is correct and effective. 1. In the production process of heat exchange equipment, drying room, rapid heat exchanger, d ......
Spring spring stiffness safety valve; pitch 1 in the pipeline system, in order to ensure its normal operation, there are safety valves. When designing the safety valve, it is necessary to ensure that the opening is flexible. Under the specified pressure, the rated displacement can be discharged. Whe ......
Currently, plastics have been widely used in various fields. When it comes to automotive and engineering plastics, we all know that in recent years, with the development trend of lightweight vehicles, high-performance engineering plastics have become the material of choice for lightweight manufactu ......
The diseases of stone can be basically divided into two categories: one is that the micropores of the stone are occupied by foreign bodies, and the microstructure of the stone itself has not been obviously damaged, such as most rust yellow spots, organic spots, salt spots and white hua, water ......
First of all, why should the cylinder head nut be repeated? This is because the cylinder head gasket is an elastic asbestos product, and its sealing function is sealed by its own elastic force. If the elastic force is too small, or disappears, it will not seal, causing air leakage and even failure o ......
With the development of society, there are more and more cars on the road, and cars play an important role in people's daily lives. In the process of driving, there are actually many hidden dangers hidden. With the development of society, there are more and more cars on the road, and cars play ......
Abstract In 2013, since President Xi Jinping proposed to build a “One Belt, One Road†strategic concept, a series of pragmatic cooperation between China and the countries along the line has produced early fruits. Recently, the National Development and Reform Commission, the Minist ......
After cutting a newly purchased tool or a reground tool for a period of time, it is found that the surface roughness of the machined surface is increased, the color, shape and initial cutting time of the chip are different, the cutting temperature is increased, the cutting force is increased, and ......
Fire-retardant coatings are special coatings in paints. When it is used for non-burning components, it can reduce the temperature rise of the substrate and postpone the process of structural instability. When used for combustible substrates, it can postpone or eliminate the ignition process. Next ......
Metallurgy yějīn metallurgy metallurgy is the process and process of extracting metal or metal compound from ore and using metal to make metal with certain properties by various processing methods. Metallurgical definition metallurgy yějīn 〖metallurgy〗 Metallurgy metall ......