Ukukhetha okubalulekile kwe-screw kanye ne-barrel

Phakathi nenqubo ye-extrusion, isikulufu sivame ukuvezwa ezimeni zokusebenza ezifana ne-torque ephezulu, izinga lokushisa eliphezulu, isivinini esikhulu, nokucindezela okuphezulu. Kwesinye isikhathi kuphinde kuvezwe ezimeni ezinzima njengokugqwala nokugqwala. Ngakho-ke, ukukhethwa kwezinto eziyisikulufa kufanele kucabangele izindaba ezinjengamandla, ukumelana nokugqoka, nokumelana nokugqwala. . Ukuze kuhlanganiswe izikulufu ezimbili ezijikelezayo, njengoba isikulufu samukela isakhiwo se-mandrel, inkinga yamandla yesikulufu iguqulwa ibe inkinga yamandla ye-mandrel. Ngenxa yokuthi i-mandrel inqunyelwe isakhiwo, ine-cross-section encane, futhi ithwala i-torque enkulu, kuyadingeka ukukhetha i-mandrel ephezulu yamandla. Ama-elementi e-screw ngokuvamile awanazo izinkinga zamandla, ngenxa yokuthi i-torque ebekezelelwa yiso sonke isikulufu isakazwa ku-elementi yesikulufu ngasinye incane kakhulu, futhi indawo ephethe ingcindezi ye-spline kusici esiyisikulufu esiphethe amandla okuzungeza ngeke ibe namandla anganele. Ngakho-ke, ukunqunywa kokuqina kodonga phakathi kwembobo emaphakathi yesici sesikulufu esihlanganisiwe nobubanzi bempande yesici sesikulufu ngokuvamile akusekelwe ekucatshangelweni kwamandla, kodwa ekuqhekekeni okuphukayo ngemva kokwelashwa kokushisa. Ubukhulu obuncane bodonga besici sesikulufa esingaqinisekisa ukuthi ukuphuka okuphukayo akwenzeki ngemva kokwelashwa kokushisa Kwanele ukuhlangabezana nezidingo zamandla.

Iningi labakhiqizi bangaphambili bezikulufu basekhaya basebenzisa insimbi engu-38CrMoAlA, futhi izikulufu zafakwa i-nitrided ngemva kokwenziwa. Abanye abakhiqizi bakwamanye amazwe basebenzisa insimbi ene-chlorine ukwenza izikulufu. Ugqinsi longqimba lwe-nitride ngokuvamile luyi-0.3~0.5mm, olungahlangabezana nezidingo ezijwayelekile.