A new type of metal glass processing technology came out
not long ago, the California Institute of technology developed a new type of metal glass processing technology. The metal glass produced by this technology has better strength and excellent flexibility than steel or titanium
it is understood that this new technology can heat metallic glass at a frequency of 1million degrees per second and achieve the effect of easy shaping in a few milliseconds. Before that, the production process of metallic glass was to heat the metal alloy by reaching the melting point above the crystalline phase of the material, which usually requires a temperature of more than 1000 degrees Celsius. The molten metal should be cast into a steel mold before cooling and crystallization. However, the problem is that ordinary steel molds generally withstand a temperature of only about 600 degrees Celsius. Therefore, the mold must be replaced frequently, which increases the production cost. Because the temperature is at 1000 ℃, the liquid liquidity is very strong, and the metal solution is a solution: it is easy to splash, resulting in flow mark defects of parts. In view of the above defects, researchers adopted a new "ohmic heating method": in about 100 milliseconds, a strong and short pulse current was heated to transmit more than 1000 joules of energy to heat metal alloys. Now the softened glass solution can be injected into the mold and cooled in only one millisecond, including half a millisecond to reach the appropriate temperature. As long as it is not exposed outdoors, the formed product will not have defects
economic internal circulation. This kind of plastic bag is poor in thickness and toughness, which is the basic link for the control of instruments and meters. In April 2021, China Chengdu Construction Expo will talk with you about new opportunities for the industry.
in 2020, with the outbreak of the global epidemic to the effective control of domestic epidemic prevention and control, the global economic pattern has also undergone great changes, and China is gradually [details]