Izinto eziluncedo kunye noHlalutyo oluBanzi lothelekiso lweeNkqubo eziPhambili zoNyango lweeFasteners 

I. IiNkqubo eziPhambili zoNyango lweeFasteners kunye nezinto eziluncedo zazo ezingundoqo

1. I-Electrogalvanizing (Kubandakanya i-Blue-White Zinc kunye noMbala weZinc)

I-Electrogalvanizing (i-galvanizing ebandayo) yinkqubo ebeka umaleko we-zinc ofanayo kwi-fastener surfaces nge-electrolysis, ekhoyo kwiindidi ezifana ne-zinc eluhlaza okwesibhakabhaka kunye ne-zinc yombala. Yeyona ndlela ixhaphakileyo yonyango eyamkelwa ngokubanzi kwizibophelelo zentengiso. Iinzuzo zayo eziphambili ziquka iteknoloji evuthiweyo, ixabiso eliphantsi, ukutyeba okulawulwayo (5-15μm), ukugqitywa kwendawo ephakamileyo, kunye nokukhethwa kwemibala emininzi, okwenza ukuba ifaneleke kwiimfuno zenkangeleko kwiimeko zangaphakathi zokulwa nokubola. Kwizinto zokuqhobosha ezinobungakanani obuncinci (umzekelo, ngaphantsi kwe-M8), i-electrogalvanizing ayivali imisonto okanye i-slots, inika umsebenzi obalaseleyo wokudityaniswa, ukufumaneka kweemarike eziphezulu kakhulu, kunye nemijikelo emfutshane yokucubungula.

Kufuneka kuqatshelwe ukuba i-electrogalvanizing inomngcipheko othile we-hydrogen embrittlement kwaye isebenza kuphela kwii-fasteners ezinobunzima obungaphantsi kwe-HRC38. Ngaphezu koko, ukusebenza kwayo kwe-anti-corrosion kuphakathi. Uvavanyo olungathathi hlangothi lwetyuwa yokutshiza (NSS) ubude be-electrogalvanizing eqhelekileyo ngokuqhelekileyo iiyure ezingama-24-96, ezinokwandiswa ukuya kwiiyure ezingaphezu kwama-200 emva kokunyangwa ngama-sealants akhethekileyo, kodwa iindleko ziya kunyuka ngamaxesha angama-5-8 ngokufanelekileyo.

2. I-Non-Electrolytic Zinc Flake Coating (Dacromet/DACROMET)

I-Dacromet luhlobo olutsha lokugquma ikakhulu oluqulunqwe ngumgubo we-zinc, umgubo we-aluminium, kunye ne-asidi ye-chromic, eyenziwe nge-dip coating kunye nokubhaka ukunyanga. Yinkqubo ekhethiweyo yexesha elide lokuchasana ne-corrosion kwiindawo ezinzima, kunye neenzuzo eziphambili eziphambili: akukho mngcipheko we-hydrogen embrittlement, okwenza ukuba ifaneleke kwi-fasteners ephezulu; ukuxhathisa okugqwesileyo kwe-corrosion, kunye novavanyo olungathathi hlangothi lwetyuwa lokutshiza (NSS) ubude beeyure ezingama-500-800 kumgangatho omnye kunye neeyure ezingama-1500-2000 zomaleko ophindwe kabini, kunye nokumelana nobushushu obulungileyo (ixesha elide ≤250℃); ulawulo oluchanekileyo lokusebenza, oluqinisekisa ukuhambelana kwamandla okubamba kuqhagamshelwano olubalulekileyo kwaye lulungele iimeko ezineemfuno eziphezulu zokuthembeka koqhagamshelwano.

Ukungalungi kwayo ukulungelelaniswa okungahambi kakuhle kwii-fasteners ezincinci ezingaphantsi kwe-M8 okanye i-drive yangaphakathi ye-threaded fasteners, njengoko i-coating inokuchaphazela indibano; inqanaba lexabiso eliphakathi, ukufumaneka kwemarike ngokubanzi, kunye neDacromet yemveli iqulethe i-chromium enehexavalent, ngoko ke ukuthotyelwa kokusingqongileyo kufuna ukuhoywa.

3. Hot-Dip Galvanizing

I-Hot-dip galvanizing yinkqubo yokulinganisa yeziganeko zangaphandle ezichasene nomhlwa, ukwenza i-coating ngokuntywiliselwa izibophelelo kwi-zinc etyhidiweyo kwi-440-460℃. Iingenelo zayo ezingundoqo kukutya okutyebileyo (50-100μm), ukuncamathela okunamandla kakhulu, kunye nokumelana nomonakalo obalaseleyo. Nokuba imikrwelo iyenzeka kumphezulu, inokuqhubeka nokuxhathisa i-corrosion ngokusebenzisa i-anode effect ye-zinc, kunye nexesha le-NSS le-300-1000 iiyure emva kokudlula. Le nkqubo inexabiso eliphakathi, ukufumaneka kakuhle kwemarike, kunye nomngcipheko ophantsi we-hydrogen embrittlement kwizibophelelo zamandla aphezulu, okwenza ukuba isetyenziswe ngokubanzi kumacandelo angaphandle.

Ukulinganiselwa kwayo kukugqitywa komphezulu ombi, akufanelekanga iimeko zendibano ezichanekileyo; iifasteners ezinobungakanani obuncinci obungaphantsi kwe-M8 zifuna ukucofa okwesibini emva konyango, okuchaphazela ukusebenza kakuhle; kunye nenkqubo yokucubungula inokubangela ukuguquka kobunzima bobunzima, ngoko ke akuvumelekanga ukusebenzisa i-12.9-grade okanye i-alloy grade grade parts.

4. Unyango lwe-Black oxide (Blueing).

Unyango lwe-oksidi emnyama (i-blueing) lwenza i-1-3μm yentsimbi engqindilili ye-tetroxide (Fe₃O₄) ifilimu kumphezulu we-fastener ngokusebenzisa i-oxidation yobushushu obuphezulu. Iingenelo zayo eziphambili ziindleko eziphantsi kakhulu, imijikelo emifutshane yokusetyenzwa, kwaye akukho mpembelelo kwi-fastener dimensional echanekile, iyenza ifanelekele uthintelo lomhlwa olusisiseko lweendawo ezichanekileyo ezisezantsi kwindawo ezingaphakathi ezingonakalisi. Le nkqubo ayifuni i-electroplating, ayifaki umngcipheko we-hydrogen embrittlement, kwaye isebenza njengokhetho lwezoqoqosho kwiindawo ezingabonakaliyo ezifana namacandelo okuhanjiswa kwangaphakathi kwezixhobo zoomatshini kunye neengxenye zokudibanisa iziseko zezixhobo.

Ukusebenza kwayo kwe-anti-corrosion yeyona nto ibuthathaka, kunye nobude bexesha lokuvavanywa kwetyuwa yetyuwa engathathi hlangothi kwiiyure ezingama-4-24 kuphela, ezinokwandiswa kwiiyure ezingama-48-72 emva kokutywinwa kokuntywiliselwa kweoli, ukuhlangabezana neemfuno ezisisiseko zokuthintela umhlwa, kunye neglosi ye-gloss iphantsi, kungekho propati yokuhlobisa.

II. Uthelekiso oluthe tyaba lweMisebenzi enguNdoqo yeeNkqubo eziPhambili

Ukufumana iingcebiso ezilungiselelwe ngakumbi, ukubonisana nobugcisa bobuchwephesha kuyacetyiswa.