I-Dacromet Flange Bolts: I-Superior Anti-Corrosion kunye ne-Anti-Rust Performance ye-Demang Applications 

I-Dacromet yi-non-electrolytic, i-water-based based coating system eyenziwe ngokuyinhloko i-zinc edibeneyo kunye ne-aluminium flakes ehlakazwe kwi-chromium-equlethe okanye i-chromium-free binder ye-inorganic. Isetyenziswe ngeendlela ze-dip-spin, i-spray, okanye i-dip-drain kwaye emva koko ihlanjululwe ngubushushu, i-coating yenza i-thin (ngokuqhelekileyo i-5-15 μm), i-uniform, ifilimu ekhuselayo yesilivere-grey ebambelela ngokuqinileyo kwi-substrate yensimbi.

I-anti-corrosion mechanism ye-Dacromet isebenza ngezenzo ezine ezongezelelweyo:

1.Ukhuseleko lomqobo: I-zinc egqwesileyo kunye neeflakes ze-aluminium zenza iileya ezininzi ezithintela ukungena kokufuma, ioksijini, kunye neeyoni ezibolayo.

2.Ukhuseleko lwedini (galvanic): I-Zinc isebenza njenge-anode yedini, ngokukhethekileyo i-corroding ukukhusela intsimbi engaphantsi kumhlwa.

3. Ukuziphilisa / ukuzilungisa: Imveliso ye-oxidation ye-zinc kunye ne-aluminium igcwalisa umonakalo omncinci kwi-coating, igcina ingqibelelo eqhubekayo yokulwa ne-rust.

4.Ukuthanda: Isibophelelo se-inorganic kunye ne-passivating khompawundi zicothisa ukusetyenziswa kwe-zinc kwedini, zandisa ukuxhathisa ukudleka.

Ngenxa yokuba inkqubo ayibandakanyi i-asidi pickling okanye i-electrolysis, i-Dacromet yokugqoka isusa ngokupheleleyo umngcipheko we-hydrogen embrittlement-inzuzo ebalulekileyo kwiibholiti zamandla aphezulu (amaBanga 10.9, 12.9, kunye ne-ASTM A490 / F3125). Oku kwenza iibholiti ze-Dacromet flange zombini zithembeke ngoomatshini kwaye zixhathisa kakhulu kumhlwa kunye nokuthotywa kokusingqongileyo.

3. Izinto eziluncedo eziphambili zeDacromet Flange Bolts

3.1 UkuNdleka okugqwesileyo kunye noKuxhathisa umhlwa

I-Dacromet-coated flange bolts ihlala iphumelela Iiyure ezili-1,000 nangaphezulu uvavanyo lokutshiza ityuwa engathathi hlangothi (ASTM B117 / ISO 9227) ngaphandle kokubonakala komhlwa obomvu. Kwiinkcukacha ezininzi, i-rust emhlophe ilibazisekile ngaphaya kweeyure ze-240-500, kunye nokusebenza okuchasene ne-corrosion jikelele ngamaxesha angama-7-10 aphezulu kune-electrogalvanizing eqhelekileyo. Esi sixhobo sibalaseleyo sokuthintela umhlwa siqinisekisa ubomi benkonzo ende kwiindawo eziselunxwemeni, elwandle, kwimizi-mveliso, nakwimeko-bume yokuphelisa ityuwa.

3.2 Akukho Mngcipheko wokuKhulisa iHydrojeni

Ngokungafaniyo neenkqubo ze-electroplating ezizisa i-hydrogen kwintsimbi ephezulu, i-Dacromet dip-spin okanye inkqubo yokutshiza ayinayo i-electrolytic ngokupheleleyo. Ngenxa yoko, iibholiti ze-flange ezinamandla aphezulu zigcina iipropathi zazo ezigcweleyo kwaye zikhululekile ekulibazisekeni i-brittle fracture ebangelwa yi-hydrogen embrittlement-inika ukhuseleko oluchasene ne-rust kunye nokhuseleko lwesakhiwo.

3.3 Ibhityile, iUniform Coating enoLawulo oluGqwesileyo lweDimensional

Ubutyebe obuqhelekileyo bokugquma busuka kwi-5 ukuya kwi-15 μm. Le filimu ibhityileyo ayitshintshi kakhulu imilinganiselo yentambo, ivumela amantongomane aqhelekileyo ukuba asetyenziswe ngaphandle kokugqithiswa. Utyatyazo lugqobhoza kwiijiyometri ezintsonkothileyo, imisonto, kunye neendawo zokuhlala ngokulinganayo, iqinisekisa ukugqunywa ngokupheleleyo kokuchasene nomhlwa nakwiiprofayili ezintsonkothileyo zebholithi yeflange.

3.4 Uzinzo lobushushu obuphezulu kunye neeNzuzo ezongezelelweyo

Iingubo ze-Dacromet zihlala zisebenza kumaqondo obushushu aqhubekayo ukuya kutsho malunga ne-250-300 °C, idlula kakhulu imida ye-thermal ye-zinc plating yesiqhelo. Izibonelelo ezongezelelweyo zibandakanya ukupeyinta okulungileyo, i-coefficients elawulwayo ye-friction (ingakumbi kunye ne-topcoat ene-lubricated topcoat), ukuhambelana kwe-bimetallic kunye ne-aluminium, kunye nokuthotyelwa kwemigangatho emininzi yeemoto kunye nokusingqongileyo.