I-Dacromet Flange Bolts: Intshayelelo eBanzi kwi-High-Performance Corrosion-Resistant Fasteners

2026-09-14

1. Intshayelelo

Kubunjineli banamhlanje kunye nokuveliswa, ukuthembeka kwamalungu adityanisiweyo kubaluleke kakhulu kwingqibelelo yesakhiwo, ukhuseleko, kunye nokusebenza kwexesha elide. Izibophelelo zesiNtu zihlala zithwaxwa kukuhlwa, ngakumbi kwiindawo ezirhabaxa ezibandakanya ukufuma, ityuwa, imichiza, okanye amaqondo obushushu aphezulu. Iibholiti ze-Dacromet ze-flange zijongene nale mingeni ngokudibanisa i-zinc-aluminium ekhethekileyo yokugqoka i-flake kunye neenzuzo zemishini yoyilo lwentloko ye-flange.

I-Dacromet flange bolt yi-fastener ephezulu yokusebenza edibanisa i-washer-efana ne-flange eyakhelwe ngaphakathi phantsi kwentloko kunye ne-non-electrolytic zinc-flake coating eyaziwa ngokuba yi-Dacromet (okanye i-zinc flake systems ephuma kuyo). Le ndibaniselwano inikezela ukuxhathisa okugqwesileyo kwe-corrosion, i-clamping force engaguqukiyo, kunye nenkululeko kwi-hydrogen embrittlement-eyenza ukuba ifaneleke ngakumbi kwizicelo zamandla aphezulu kumacandelo eemoto, eyokwakha, elwandle, ezamandla nakumashishini.

2. Yintoni i-Dacromet Coating?

I-Dacromet yinkqubo yokwaleka ye-zinc-aluminiyam ye-inorganic esekelwe emanzini, eyaqalwa ngo-1970. Iqukethe i-zinc kunye ne-aluminium flakes exhonywe kwi-chromate (okanye i-chromium-free) binder. I-coating isetyenziswe ngeendlela ze-dip-spin, i-spray, okanye i-immersion kwaye iphiliswe kumaqondo obushushu aphakamileyo (ngokuqhelekileyo malunga ne-300 ° C), yenza ifilimu ekhuselayo, eshinyeneyo, enemigangatho emininzi.

Iimpawu eziphambili zokwaleka ziquka:

Ubukhulu befilimu: Ngokuqhelekileyo i-4-12 μm (ngokuqhelekileyo i-6-8 μm), egcina ukunyamezela okuchanekileyo kwentambo.

Umqobo + ukhuseleko lombingelelo: Iiflake zetsimbi ezinqamlezileyo zidala umqobo womzimba ngelixa i-zinc ibonelela ngokhuseleko lwe-galvanic (lomnikelo).

Akukho embrittlement yehydrogen: Inkqubo engeyiyo i-electrolytic igwema i-acid pickling kunye ne-electrolysis, isusa umngcipheko wokulibaziseka kwe-hydrogen-induced fracture kwiintsimbi eziphezulu zamandla.

Ukumelana nobushushu: Izinzile ukuya kutsho malunga nama-300°C rhoqo ubushushu benkonzo.

Imbonakalo: Ukugqiba isilivere-grey matte.

Qaphela ukuba "i-Dacromet" ligama lentengiso yezorhwebo; iinkqubo ezifanayo ze-zinc-flake (ezifana ne-Geomet, i-chromium-free) zisetyenziswa ngokubanzi namhlanje ukuhlangabezana nemimiselo yendalo yendalo (RoHS, REACH, ELV).

3. Ziziphi iiBolts zeFlange?

Ibhawunti yeflange (ekwabizwa ngokuba yi-flanged hex head bolt okanye ifreyimu ibhawunti) ineflange edityanisiweyo esetyhula phantsi kwentloko ene-hexagonal esebenza njengewasha eyakhelweyo. Olu yilo lusasaza umthwalo wokugoba phezu kwendawo enkulu yomhlaba, kunciphisa umngcipheko wokudibanisa kwizinto ezidibeneyo, kuphucula ukuxhathisa ukungcangcazela, kwaye kaninzi kuphelisa imfuno yewasha eyahlukileyo.

Iindidi eziqhelekileyo ziquka:

Iibholiti ze-Hex flange (ezona zixhaphakileyo)

Iibholiti zeflange ezirhwexulweyo (ezineentetho ezingaphantsi kwentloko zokuchasana nokujikeleza)

Intloko yesokethi okanye ezinye iinguqulelo ezikhethekileyo zeflange

Xa zidityaniswe ne-Dacromet coating, ezi bholithi zibonelela ngokusebenza okuphezulu komatshini kunye nokuqina kokusingqongileyo okubalaseleyo.

4. Ukuthelekisa kunye neengubo eziqhelekileyo

Le theyibhile ilandelayo ishwankathela umahluko oqhelekileyo wokusebenza:

Ipropati	Dacromet	Electro-Zinc	Hot-Dip Galv.	Ingenabala
Isitshizi seTyuwa (iiyure)	1,000–1,500+	100–300	500–1,000+	Indalo
Ukutyeba kokutyabeka	4–12 μm	5–15 μm	40–100+ μm	N/A
H Embrittlement Umngcipheko	Akukho nanye	Phezulu (ku-≥10.9)	Phantsi–Phakathi	Akukho nanye
Ubukhulu benkonzo yeTemp.	~300°C	~100–120°C	~200°C	Phezulu
Umsonto Fit Impact	Ubuncinci	Phantsi	Kubalulekile	Akukho nanye

Qaphela: Okwenziweyo kuyahluka ngokwenqanaba lokutyabeka, ubukhulu, idyasi, kunye neemeko zokusingqongileyo. Iinkqubo ze-zinc-flake ezingenazi-Chromium (umzekelo, i-Geomet) zibonelela ngokhuseleko lokutya okufanayo ngelixa udibana nemigangatho engqongqo yokusingqongileyo.

5. IiNdawo zeSicelo eziMakhulu

Iibholiti ze-Dacromet flange zisetyenziswa kakhulu kumacandelo e-chassis, iinkqubo zokunqunyanyiswa, ukunyuswa kweenjini, iindibano zebrake, iinkqubo zokukhupha, kunye nezakhiwo zomzimba. Bamelana neetyuwa zendlela, ukukhwela ibhayisekile nge-thermal, ukungcangcazela, kunye namaqondo obushushu aphezulu angaphantsi kwe-hood ngelixa bebonelela ngomthwalo othembekileyo wokubamba.

Kwiibhulorho, iinqaba zothumelo, izakhiwo zentsimbi, kunye nezixhobo eziselunxwemeni, ezi bholithi zibonelela ngokhuseleko lwexesha elide ngokuchasene nokuhlwa kwe-atmospheric kunye nokunciphisa ukugcinwa rhoqo.

Iziseko zeinjini yomoya engaselunxwemeni, iinkqubo zokunyuswa kwelanga, ukwakhiwa kweenqanawa, kunye nezixhobo zezibuko ziyazuza kuxhathiso oluphezulu lokutshiza ityuwa kunye nokukwazi ukugquma iijiyometri ezinzima ngokufanayo.

Izixhobo ezivezwe kwizichumisi, iikhemikhali, ukufuma, kunye ne-abrasion-ezifana noomatshini bezolimo, iimpompo, iivalve, kunye nezixhobo zenkqubo-ngokuqhelekileyo zichaza i-Dacromet-coated flange fasteners ukwenzela ubomi obude benkonzo.

6. AmaBanga aqhelekileyo, iMigangatho, kunye nesiKhokelo sokuKhetha

Iiklasi zePropati: Iibholiti ze-Dacromet flange ziyafumaneka kwiiklasi zepropathi 4.8, 8.8, 10.9, kunye ne-12.9 (metric), kunye neBanga lesi-5 kunye neBanga lesi-8 (i-imperial). Amabanga aphakamileyo aphezulu (10.9 / 12.9) azuza ngokukodwa ngokungabikho komngcipheko we-hydrogen embrittlement.

Imigangatho yobukhulu: Iimbekiselo eziqhelekileyo ziquka imigangatho ye-ISO metric flange bolt, i-DIN, i-GB (isiTshayina), kunye ne-ASME / ANSI yochungechunge lwe-intshi.

Iinkcukacha zokugquma: Ukusebenza kudla ngokucaciswa bubunzima bokugquma (umzekelo, iBanga A ≈ 24 g/m², iBanga B ≈ 36 g/m²) kunye neemfuno zesitshizi setyuwa. Iidyasi eziphezulu zinokongezwa ukuphuculwa kwe-lubricity, umbala, okanye ukhuseleko olongezelelweyo lomqobo.

Iingcebiso zokukhetha: Tshatisa inkqubo yokwaleka kudidi lwe-corrosion yendalo (umzekelo, i-C3-C5 nge-ISO 12944). Kumalungu okwakhiwa kwamandla aphezulu, qinisekisa idatha ye-torque-tension kunye ne-coating ethile kunye ne-topcoat. Khetha iinkqubo ezingenachromium xa kufuneka ukuthotyelwa kwendalo.

7. Ukufakela kunye neeNgqwalasela eziSebenzayo

Phatha ngononophelo: Nangona i-coating ine-adhesion elungileyo, gwema umonakalo onzima womatshini ngexesha lokuphatha kunye nokufakwa.

Ulawulo lweTorque: Sebenzisa i-friction coefficients ebonelelwe ngumthengisi we-coating. Iinkqubo ze-Dacromet eziLubricated zivelisa imithwalo ye-clamp ehambelanayo ngakumbi kuneengubo ze-zinc ezingaxutywanga.

Ukuhambelana: I-Dacromet ngokubanzi iyahambelana ne-gasket eninzi kunye nezixhobo zokutywina kwaye inokupeyintwa ngaphezulu ukuba iyafuneka.

Uhlolo: Ukuhlolwa okubonakalayo kokuqhubekeka kokwambathisa kunye novavanyo lokubambelela (apho kuchaziwe) kufuneka lube yinxalenye yolawulo lomgangatho.

8. Ukuqukumbela

Iibholiti ze-Dacromet flange zimela isisombululo esivuthiweyo, esisebenza ngokuphezulu esilungelelanisa ngempumelelo ukhuseleko lokugqwala, ukuthembeka koomatshini kunye nokuchaneka komda. Ngokususa imingcipheko ye-hydrogen embrittlement ngelixa uhambisa ukusebenza kwesitshizi setyuwa kuphezulu kakhulu kunesiqhelo se-zinc plating, baye baba lukhetho olukhethwayo lokufuna izicelo kuwo wonke amacandelo eemoto, amandla, ulwakhiwo kunye nezoshishino.

Njengoko imimiselo yokusingqongileyo iqhubeka nokuqhuba ukwamkelwa kweenkqubo ze-zinc-flake ze-chromium, iteknoloji iyaqhubeka nokuguquka ngelixa igcina izibonelelo zayo eziphambili. Xa ucacisa i-fasteners kwiindawo ezinobungozi okanye eziphakamileyo zokushisa-ingakumbi apho amabakala aphezulu afunekayo-i-Dacromet (okanye i-zinc-flake efana ne-zinc-flake) i-coated flange bolts kufuneka ithathelwe ingqalelo ngokuqinileyo njengesisombululo esiqinisekisiweyo kunye neendleko eziphezulu ebomini benkonzo yendibano.

Iinjineli kunye nabathengi bayakhuthazwa ukuba baqhagamshelane nabanikezeli beengubo kwiinkcukacha zeenkcukacha zeenkcukacha zobuchwepheshe, i-friction coefficients, kunye neengxelo zovavanyo lwetyuwa-spray ngqo kwinkqubo ekhethiweyo kunye neemfuno zesicelo.

Andinayo. Okulandelayo.

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