I-coating engaphezulu kwesikulufa ibaluleke kakhulu njengezinto ezisetshenziswayo zesikulufa uqobo. Izintambo ze-Screw zenziwa ngokusika noma ukwakha inqubo yemishini, futhi izimbotshana ezingaphezulu zinikeza ungqimba olubalulekile lokuvikelwa kwesikulufa shank nemicu.
Kulelo nto, ama-screws azuza kakhulu ezinqeshini ezahlukahlukene ze-Excured Surce Pour ezihambisana nesicelo ngasinye sokulungisa ukuze zinikeze ngokugqwala okuphelele nokuvimbela.
Ngamafuphi, izimbobo ezingaphezulu zisetshenziselwa izikulufa ukukhulisa ukumelana komhlaba futhi zivikele isikulufa ukwehluleka ngaphambi kwesikhathi ngenxa yokugqwala noma ukuqhekeka.
Ngakho-ke, yiziphi izindlela ezivame kakhulu ukwelashwa? Lokhu okulandelayo kuyizindlela ezivame kakhulu zokwelashwa komhlaba:
1. I-Zinc Plating
Indlela evame kakhulu yokwelashwaIsikulufa yi-electro galvaning. Akubi nje kuphela, kepha futhi kunokubukeka okuhle. I-Electroplating itholakala ngombala omnyama nowezempi. Kodwa-ke, ububi obuthile be-electro galvaning ukuthi ukusebenza kwalo okulwa nokugqwala kujwayelekile, futhi kunokusebenza okuphansi kakhulu kokulwa nokuwohloka kwanoma yikuphi ukubekwa ungqimba (ukunamathela). Ngokuvamile, izikulufo ngemuva kokuthi i-electro galvanizing ingadlulisela isivivinyo sikasawoti esingathathi hlangothi kungakapheli amahora angama-72, futhi i-ejenti ekhethekile yokufafaza ngemuva kokuthi i-electro galvaning ngemuva kokuthatha isikhathi esingaphezu kwamahora angama-200 ubudala, kepha kubiza kakhulu, kubiza izikhathi ezi-5-8 ezijwayelekile.
2. I-Chromium Plating
I-chromium coatium ku-isikulufa fasteners iqinile emvelweni, ayiguquli kalula umbala noma ilahlekelwe yi-luster, inobulukhuni obuphezulu, futhi imelana nokugqoka. Yize i-chromium coatium ivame ukusetshenziswa njengenhlanganisela yokuhlobisa ama-fasteners, akuvamile ukusetshenziswa ezimbonini ezidinga ukumelana nokugqwala okuphezulu. Ngoba ama-fasteners amnandi we-chrome abiza kakhulu njengensimbi engenacala, kufanele asetshenziswe kuphela lapho amandla ensimbi engagqwali awenele. Ukwenza ngcono ukumelana nokuqina kwe-chromium, ithusi kanye ne-nickel kufanele kufakwe amaplathi ngaphambi kweplanethi ye-chromium. Yize i-chromium coatium ingamelana namazinga okushisa aphezulu angama-1200 degrees Celsius (650 degrees Celsius), ahlushwa yinkinga efanayo ye-hydrogen efordlinement njenge-galvaning.
I-3. Isiliva kanye ne-nickel plating ebusweni
Ukuhlanganiswa kwesiliva kwe-isikulufa isikulufaIsebenza njengesithambisi esiqinile sabamangali kanye nendlela yokuvimbela ukugqwala. Ngenxa yezindleko, izikulufo ngokuvamile azisetshenziswanga, futhi ngezikhathi ezithile ama-bolts amancane nawo aphethwe yisiliva. Yize ifaka emoyeni, isiliva lisasebenza kuma-1600 degrees Fahrenheit. Ukuze usebenze kuma-fasteners okushisa aphezulu futhi uvikele i-screw oxidation, abantu basebenzisa ukumelana kwabo okushisa okuphezulu kanye nezimfanelo zokuthambisa. Ama-Fasteners ngokuvamile afakwe ama-nickel ezindaweni ezinokuvuselelwa okuphezulu nokuphikiswa kokugqwala. Isibonelo, i-terminal yebhethri lebhethri elingenayo.
4.Screw Surface ukwelashwaI-DACROMET
Ukwelashwa okungaphezulu kweI-DACROMET ye-Screw Fastenersayinayo i-hydrogen emflittlement, kanye ne-torque preload esebenza ngokungaguquki. Kodwa-ke, kungcolisa kakhulu. Ngaphandle kokubheka izingqinamba nge-Chromium nezemvelo Ukuvikelwa, empeleni kufanelekile kakhulu kuma-fasteners aphezulu anezidingo eziqinile zokulwa nokuwohloka.
5. I-Phosphating
Yize i-phosphorating ingabizi kakhulu kune-galvaning, inikezela ukuvikelwa okungaphansi kokugqwala.Isikulufa fastenersKufanele ifakwe emafutheni ngemuva kokuthi ukusebenza kwe-phosphating ngoba ukusebenza kawoyela kuhlobene kakhulu nokumelana nokugqwala kwama-fasteners. Faka amafutha ajwayelekile antirust ngemuva kwe-phosphating, futhi ukuhlolwa kosawoti okusawoti kufanele kuthathe amahora ayi-10 kuye kwangama-20 kuphela.I-screw fastender kungathatha amahora angama-72-96 uma kukhunjulwa ama-antirust amahlandla ama-phrosthi. Ngoba amabutho abo e-torque namandla aphambi kokuqinisa anokusebenza okuhle okungaguquki, iningi lezinto ezisebenza ngezikhiye zezimboni ziphathwa ngamafutha e-phosphating +. Ihlala isebenza esakhiweni sezimboni ngoba ingahle igculise izidingo ezilindelwe kakhulu ngesikhathi somhlangano wezingxenye nezingxenye. Ikakhulu lapho uxhumanisa ezinye izakhi ezibalulekile, ezinye izikulufu zisebenzisa i-phosphating, ezingavimba futhi udaba lwe-hydrogen embrittlement. Ngenxa yalokho, ensimini yezimboni, i-screwwith ibanga eliphakeme kune-10.9 ngokuvamile ligcwele.
Isikhathi sePosi: Feb-15-2023