I-surface coating on a screw ibaluleke kakhulu njenge-screw material ngokwayo. Izintambo zokukulungela zidalwe ngenqubo yokusika noma yokwenza imishini, futhi izimbotshana ezingaphezulu zinikeza isendlalelo esibalulekile sokuvikela i-screw shank nemicu.
Ukuze kufezeke lokho, izikulufu zizuza kakhulu kunhlobonhlobo yama-surface akhiwe ngobunjiniyela afanelana nohlelo ngalunye lwesikulufu ukuze kuhlinzekwe ukugqwala okuphelele nokuvikeleka kokuqhekeka.
Kafushane nje, izimbotshana ezingaphezulu zisetshenziswa kuzikulufu ukuze kwandiswe ukumelana nendawo futhi kuvikelwe isikulufu ekuhlulekeni ngaphambi kwesikhathi ngenxa yokugqwala noma ukuqhekeka.
Ngakho-ke, yiziphi izindlela ezivame kakhulu zokwelapha isikulufu? Okulandelayo izindlela ezivame kakhulu zokwelapha indawo yesikulufu:
1. I-Zinc Plating
Indlela evame kakhulu yokwelashwa kwendawoI-Screw i-electro galvanizing. Ayibizi nje kuphela, kodwa futhi inokubukeka okuthandekayo. I-Electroplating itholakala ngombala omnyama noluhlaza wezempi. Kodwa-ke, okunye okungalungile kwe-electro galvanizing ukuthi ukusebenza kwayo kwe-anti-corrosion kuyinto evamile, futhi inokusebenza okuphansi kakhulu kokulwa nokugqwala kwanoma yiluphi ungqimba lwe-plating (coating). Ngokuvamile, izikulufi ngemva kokuvuthwa kwe-electro galvanizing zingadlula ukuhlolwa kwesifutho sikasawoti esingathathi hlangothi kungakapheli amahora angama-72, futhi kusetshenziswa i-ejenti ekhethekile yokuvala uphawu, ukuze ukuhlolwa kwesifutho sikasawoti ngemuva kwe-electro galvanizing kungahlala amahora angaphezu kuka-200, kodwa kubiza kakhulu. , kubiza izikhathi eziphindwe ka-5-8 kunemali yokufaka uthayela okuvamile.
2. I-Chromium Plating
I-chromium enama-screw fasteners izinzile endaweni, ayishintshi kalula umbala noma ilahlekelwe ukucwebezela, inokuqina okuphezulu, futhi imelana nokugqokwa. Nakuba ukunamathela kwe-chromium kuvame ukusetshenziswa njengokuhlobisa ezitsheni zokubopha, kuyaqabukela kusetshenziswe ezimbonini ezidinga ukumelana nokugqwala okuphezulu. Ngenxa yokuthi izinsimbi ezinhle ze-chrome plated fasteners zibiza njengensimbi engagqwali, kufanele zisetshenziswe kuphela uma amandla ensimbi engagqwali enganele. Ukuze kuthuthukiswe ukumelana nokugqwala kwe-chromium plating, ithusi ne-nickel kufanele kuhlanganiswe ngaphambi kokufakwa kwe-chromium. Nakuba i-chromium enamathelayo ikwazi ukumelana nezinga lokushisa eliphezulu elingu-1200 degrees Fahrenheit (650 degrees Celsius), ihlushwa inkinga efanayo yokuhlanganisa i-hydrogen nokufaka uthayela.
3. Isiliva ne-nickel plating ngaphezulu
I-Silver coating ye-screw fastenersisebenza njengelubricant eqinile yezinsimbi kanye nendlela yokuvimbela ukugqwala. Ngenxa yezindleko, izikulufu ngokuvamile azisetshenziswa, futhi ngezinye izikhathi amabhawodi amancane nawo ahlanganiswe nesiliva. Nakuba ingcolisa emoyeni, isiliva lisasebenza ku-1600 degrees Fahrenheit. Ukuze kusebenze izinsimbi zokushisa eziphakeme futhi kuvinjwe i-screw oxidation, abantu basebenzisa ukumelana kwabo nezinga lokushisa eliphezulu kanye nezimfanelo zokugcoba. Amafasteners ngokuvamile ane-nickel-plated ezindaweni ezine-conductivity ephezulu kanye nokumelana nokugqwala. Isibonelo, itheminali yebhethri yemoto engenayo.
4.Ukwelashwa kwendawo yesikulufuI-Dacromet
Ukwelashwa okungaphezulu kweI-Dacromet ye-screw fastenersayiqukethe i-hydrogen embrittlement, futhi ukulayisha kuqala kwe-torque kusebenza kahle kakhulu. Nokho, ingcolisa kakhulu. Ngaphandle kokucabangela izinkinga nge-chromium nokuvikelwa kwemvelo, empeleni ifaneleka kakhulu izixhumi ezinamandla ezinezidingo eziqinile zokulwa nokugqwala.
5. I-Surface phosphating
Nakuba i-phosphorating ibiza kancane kune-galvanizing, inikeza ukuvikeleka okuncane ekugqwaleni.Izikulufa zokubophakufanele igcotshwe ngemuva kwe-phosphating ngoba ukusebenza kwamafutha kuhlobene kakhulu nokumelana nokugqwala kwezinsimbi. Faka amafutha e-antirust evamile ngemva kwe-phosphating, futhi ukuhlolwa kwesifutho sikasawoti kufanele kuthathe amahora angu-10 kuya kwangu-20 kuphela. Ngenxa yokuthi i-torque yawo namandla okuqinisa angaphambi kokuqina anokusebenza okuhle okungaguquki, izinsimbi eziningi zezikulufo zezimboni ziphathwa nge-phosphating + oiling. Ivamise ukusetshenziswa ezakhiweni zezimboni ngoba ingase yanelise izidingo zokuqiniswa okulindelekile ngesikhathi sokuhlanganisa izingxenye nezingxenye. Ikakhulukazi lapho kuxhunywa izingxenye ezithile ezibalulekile, ezinye izikulufi zisebenzisa i-phosphating, ezingase futhi zivimbele inkinga ye-hydrogen embrittlement. Njengomphumela, emkhakheni wezimboni, isikrufu esinebanga elingaphezulu kuka-10.9 sivamise ukuba yi-phosphated.
Isikhathi sokuthumela: Feb-15-2023