tungsten

Experiments in space In “ Alliance Apollo ” During the docking flight, the astronauts of the two countries jointly conducted a meaningful experiment, in which tungsten played a positive role. In the earth’s environment, metals with very different densities are often difficult or impossible to alloy. Because during melting, the heavier metal crystalline grains sink to the lower layer of the spindle, while the lighter crystalline grains are distributed in the upper layer of the spindle. This unevenly distributed alloy certainly cannot be used. However, if smelting is carried out…