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Melting mold used for manufacturing quartz crucible, is made of cast iron of grade, and contains upper semi-cylindrical and bottom components, in which channels are made for vacuuming and removing gas product during production of quartz crucible 2024-09-06
Melting mold for forming quartz crucibles, is made of cast iron, and comprises upper hollow cylindrical and bottom components, in which channels are located along perimeter of wall of upper component, and porous filter installed with tension inside stepped openings with larger diameter 2024-09-04