Powder metallurgy tungsten nthawi zambiri imakhala ndi njere yabwino, yopanda kanthu nthawi zambiri imasankhidwa ndi kutentha kwapamwamba komanso kugudubuza njira, kutentha kumayendetsedwa pakati pa 1500 ~ 1600 ℃.Pambuyo pa chopanda kanthu, tungsten imatha kupindika, kupukutidwa kapena kupindika.Atolankhani...
Werengani zambiri