Ifihan ilana 3/4 ti awọn ọja ti o fẹẹrẹfẹ ni a ṣelọpọ nipasẹ fifin fifun extrusion.Ilana extrusion ni lati fi ipa mu ohun elo nipasẹ iho tabi ku lati ṣe ọja kan.Awọn extrusion fe igbáti ilana oriširiši 5 awọn igbesẹ ti: 1. ṣiṣu preform (extrusion ti ṣofo ṣiṣu tube).2...
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