Sekurufu sa nitrided le moqomo oa boleng bo holimo
Nitriding Process: Nitriding ke phekolo e thatafatsang ka holim'a metsi moo naetrojene e hasanngoang holim'a thepa ho etsa lera le thata la nitride. Ts'ebetso ena hangata e kenyelletsa ho futhumatsa sekoti barrel sebakeng se laoloang sa khase ea ammonia mochesong o phahameng, hangata lipakeng tsa 500°C le 550°C (932°F ho isa 1022°F).
Nitride Layer: Ts'ebetso ea nitriding e theha lera le thata holim'a sekoti se atisang ho tloha ho 0.1 mm ho ea ho 0.4 mm ka botenya. Lera lena le na le nitrides, haholo-holo gamma prime iron nitride (Fe4N).
Ntlafatso ea Resistance ea ho Wear: Nitriding e eketsa haholo ts'ebetso ea "screw resistance" ea screw barrel, e leng bohlokoa lits'ebetsong tsa extrusion moo screw le barrel li kenngoeng ke ho roala ha polymer le li-additives. The hard nitride layer e thusa ho lelefatsa bophelo ba ts'ebeletso ea screw barrel, ho fokotsa nako le litšenyehelo tsa tlhokomelo.
Khanyetso e Ntlafetseng ea Corrosion: Lera la nitride le boetse le fana ka khanyetso e ntlafetseng ea ho senya ho tloha ho polymer e entsoeng ka ho qhibiliha le lintho tse ling tse senyang tse teng nakong ea ts'ebetso ea extrusion. Sena se thusa ho netefatsa bophelo bo bolelele ba screw barrel le ho boloka ts'ebetso e tsitsitseng ha nako e ntse e ea.
Fokotsa Khohlano: Lera le boreleli le le thata la nitride le fokotsa khohlano lipakeng tsa screw le barrel, e leng se bakang tlhahiso e fokolang ea mocheso le tšebeliso e ntle ea matla nakong ea ts'ebetso ea extrusion. Sena se ka fetolela tšebeliso e tlase ea matla le ho ntlafatsa tlhahiso ka kakaretso.
Phetisetso e Ntle ea Mocheso: Nitriding e ntlafatsa tšebetso ea mocheso oa "screw barrel", e lumellang ho fetisoa ha mocheso hantle nakong ea ho qhibiliha le ho kopanngoa ha polymer. Sena se thusa ho fihlela ho qhibiliha ho tsitsitseng le ho ka tšeptjoang, ho lebisang ho boleng bo botle ba sehlahisoa.
Phapang e Nyenyane ea ho Plugging le ho qhibiliha: Ka mokhoa o matlafalitsoeng oa ho hanyetsa le thepa e ntlafalitsoeng ea holim'a metsi, sekoti sa nitrided screw ha se na monyetla oa ho aha thepa, ho plugging le ho fapana ha ho qhibiliha. Sena se etsa hore ho be le mekhoa e tsitsitseng ea extrusion, nako e fokotsehileng, le ho ntlafatsa ts'ebetso ea lihlahisoa.
Ho bohlokoa ho hlokomela hore melemo e ikhethileng ea "screw barrel" ea nitrided e ka fapana ho latela ts'ebeliso, thepa e sebetsoang le maemo a ts'ebetso. Ho buisana le moetsi kapa mofani oa thepa ea nang le botumo bo botle ho ka thusa ho tseba hore na sekoti sa nitrided screw barrel ke khetho e nepahetseng ka ho fetisisa bakeng sa litlhoko tsa hau tse khethehileng tsa extrusion.
