Ultrasonic welding is based on high-frequency vibrations (typically between 20 and 40 kHz) that cause surface friction and viscoelastic heating at the weld. The most important process parameters are ...

China's annual aluminium output in 2022 rose 4.5% from the previous year to a record high, official data showed on Tuesday, reaching 40.21 million tonnes with a boost from newly launched capacity ...

China's annual aluminium output in 2022 rose 4.5% from the previous year to a record high, official data showed on Tuesday, reaching 40.21 million tonnes with a boost from newly launched capacity ...