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1.Furfuryl alcohol content The furan resin with acid as a catalyst generally contains more than 50% furfuryl alcohol. The most commonly used is urea-formaldehyde furfuryl alcohol resin. As the furfuryl alcohol content…

Silent conductor rail transit: mystery decoding railway signal system In a speeding train steel orbit, like precision operating hour meter, behind its security and efficiency, hides a set of complex and the…

In order to obtain low-temperature ductile iron materials with higher strength and toughness, alloying elements Ni and Nb were added to the QT400-18AL material for alloying. Through the tests of the mechanical…

Overview of the development of self-hardening furan resin sand Furan resin was first used as a binder for castings in the United States in 1958. At that time, it was used as…

The mystery of the rail transit power heart: gear transmission system depth resolution When the steel dragon is in orbit and outdated, hidden in the bottom of the car body gear precision…

Overview of wind power of ecological and economic benefits The force at the core drives a green future under the dual challenge of climate change and energy transformation; wind power, with its…

The concept of self-hardening furan resin sand The name of self-hardening furan resin sand comes from the English word Furan No-Bake process, which means that furan resin is used as a binder…

Water glass investment casting is also known as “lost wax casting”. It is a method of obtaining castings by coating several layers of refractory materials on the surface of the wax mold.…

Overview In vast grasslands and the blue sea border, the past white giant is a rotational blade with an elegant attitude; the modern version of the “windmill” is quietly changing the human…

The bogie is one of the most important components of a locomotive. Whether its structure is reasonable directly affects the running quality, power performance and driving safety of the locomotive. The rapid…

In the field of wind power, the wind power gearbox is a vital component. It converts the low-speed and high-torque power generated by the wind rotor under the action of wind into…

In the high-speed rail tunnel gallop between the electric fire, in the heavy load train of 10,000 tons of cargo, explosion-proof motor cover like welded on the railway power system armor, with…