Inqubo yokwelashwa kwe-Fastener surface: i-galvanizing, i-phosphating, i-blackening, iyiphi okufanele ngiyikhethe?

Embonini yesimanje, izinsimbi ziyizici ezibalulekile zokuxhuma izingxenye, futhi ukusebenza kwazo kuthinta ngokuqondile ukuzinza nokuphepha kwayo yonke imishini. Ukwelashwa okungaphezulu kwama-fasteners akuhlobene nje nokubukeka kwabo okuhle, kodwa futhi nokusebenza kwabo kokulwa nokubola kanye nempilo yesevisi. Ngakho-ke, ukukhetha inqubo efanelekile yokwelashwa kwendawo sekuyingxenye ebalulekile yokukhiqiza i-fastener engenakunakwa.

Okokuqala, ake sikhulume nge-electrogalvanizing esetshenziswa kakhulu. KANYEi-lectrogalvanizing sekuyinsakavukela umchilo wesidwaba for commercial fasteners nezindleko zayo eziphansi kanye nokubukeka okuhle. Kodwa-ke, ukusebenza kwayo kwe-anti-corrosion akuvelele, ikakhulukazi lapho kunomswakama ophezulu noma ezindaweni ezigqwalile, futhi ukuqina kwayo kudinga ukuthuthukiswa. Ukuze kuxazululwe le nkinga, kuye kwethulwa ama-sealers athile akhethekile ukuze andise impilo yawo yokulwa nokugqwala. Kodwa izindleko zokwelashwa okunjalo nazo zinyukile, futhi kudingeka zikalwe ngokuvumelana nesimo esithile sokusetshenziswa.

Okulandelayo ngui-phosphating. I-Phosphating ayithengeki nje kuphela, kodwa futhi inokumelana nokugqwala okuhle nokumelana nokugqoka, okufanelekile ikakhulukazi kuma-bolts aphezulu. Ukugcoba ngemuva kwe-phosphating kungathuthukisa ukusebenza kwayo kokulwa nokugqwala futhi kulungele ukuxhumana kwezingxenye ezibalulekile. Kuyafaneleka ukusho ukuthi i-phosphating nayo ingagwema ngempumelelo i-hydrogen embrittlement, okuyisici okufanele sicatshangelwe lapho kwakhiwa amabhawodi anamandla amakhulu.

Ake sixoxei-oxidation (imnyama)ukwelashwa. Le ndlela yokwelapha inezindleko eziphansi kakhulu, kodwa izogqwala ngokushesha lapho engekho amafutha. Ngakho-ke, ngokuvamile kuhlanganiswe namafutha ukuze kunwetshwe impilo yesevisi. Nakuba ukumelana nokugqwala kukhawulelwe, kusewukhetho olungokomnotho kwezinye izikhathi ezingabizi kakhulu.

I-Cadmium electroplatingisebenza kahle ezindaweni ezisemkhathini wasolwandle ngenxa yokumelana nokugqwala okuhle kakhulu. Kodwa-ke, izindleko eziphezulu kanye nezindleko zokwelashwa koketshezi okumoshayo phakathi nenqubo yokucubungula zikhawulela ububanzi bokufaka isicelo. I-Chromium electroplating yaziwa ngobulukhuni bayo obukhulu nokumelana nokugqoka, kodwa futhi inezindleko eziphakeme kanye nezinkinga ze-hydrogen embrittlement.

I-Nickel Platingkuyindlela yokwelapha engaphezulu engavimbela kokubili ukugqwala futhi igcine ukuguquguquka okuhle. Isetshenziswa kakhulu ezikhathini lapho kudingeka khona kokubili ukumelana nokugqwala kanye ne-conductivity, njengamatheminali aphumayo amabhethri emoto.

I-Hot-dip galvanizing kanye nokufakwa kweZinczimbili izindlela zokwelapha ezisetshenziswa kakhulu kwezobunjiniyela. I-hot-dip galvanizing yaziwa ngokujiya kwayo kanye nokumelana nokugqwala okuhle, kodwa ingase ibangele izinkinga ngobunzima bokufingqa imicu yangaphakathi neyangaphandle. Ukungena kwe-Zinc kuyathandwa ngenxa yokufana kwayo okuhle, amandla okubopha okuphezulu ne-substrate, nokuvikelwa kwemvelo nokungangcoli.

Ekugcineni, kufanele sikhulumeI-Dacrometukwelashwa. Lolu hlobo olusha lwe-anti-corrosion coating alugcini nje ngokusebenza kahle kakhulu kwe-anti-corrosion, kodwa futhi alunayo inkinga ye-hydrogen embrittlement kanye nokuvumelana okuhle kwe-torque-preload. Nokho, iyabiza futhi inezinkinga zemvelo, ngakho idinga ukusetshenziswa ngemva kokucutshungulwa okuphelele kwezindleko nezidingo zemvelo.

Kafushane, ukukhetha kokwelashwa kwendawo yokubopha kudinga ukucabangela ngokugcwele izici eziningi ezifana nokusebenza kokunqanda ukugqwala, izindleko, indawo yokusebenzisa, izidingo zemvelo, kanye nezidingo zokusebenza zesixhumi ngokwaso. Kuphela ngokuthola indlela yokwelashwa efaneleke kakhulu lapho singaqinisekisa khona ukuthi isibambiso sigcina ukusebenza okuzinzile nokuphepha okuthembekile ekusetshenzisweni kwesikhathi eside.

Iwebhusayithi yethu:https://www.fastoscrews.com/, khululeka Xhumana nathi.