I-Dacromet-Coated Bolts kunye namantongomane

2026-10-28

1. Intshayelelo

I-Dacromet-Coated Bolts kunye namantongomane

Udibaniso olunentambo lomelele kuphela njengelona lungu lalo libuthathaka. I-premium ye-Dacromet-coated hex bolt efakwe kwi-zinc-plated nut ayisiyonkqubo yokukhusela umhlwa - yinto iseli galvanic elindele ukusilela. I-zinc-plated nut iba yi-anode kwesi sibini, i-corrodes ngokukhethekileyo, ibambe kwimisonto ye-bolt, kwaye i-joint yonke ilahlekelwa ngumthwalo wayo we-clamp ixesha elide ngaphambi kokuba i-bolt ibonise nayiphi na i-rust ebomvu.

Ngesi sizathu, inkcazo ye-fastener yobuchwephesha ihlala iphatha iibholiti, iindongomane kunye neewasha njengepakethe enye ehambelanayo yokukhusela umhlwa. I-Dacromet (i-zinc-aluminium flake, i-non-electrolytic) yokugquma yinkqubo yokuzikhethela kule phakheji: inika yonke intambo - indoda kunye nebhinqa - ibhityile (5-12 μm), iyunifomu, ifilimu ye-hydrogen-free enyamezela iiyure ezingama-500-1,000 ze-spray yetyuwa engathathi hlangothi (NSS) ukubonakaliswa ngaphandle kokugqabhuka komhlwa omhlophe okanye i-rust staining ebomvu.

Eli nqaku lichaza iintsapho ze-fastener ezibandakanyekayo, iindlela ze-corrosion ezihlasela i-threaded joints, kutheni i-Dacromet ifanelana ne-bolts kunye namantongomane ngokufanayo, kunye nendlela yokucacisa kunye nokudibanisa isethi ehambelana ne-bolt-nut-washer.

2. Indlela i-Corrosion ehlasela ngayo i-Treaded Joint

Imisonto yeyona geometry inobungozi kakhulu kuyo nayiphi na indibano yesibophelelo:

1.I-Crevice CorrosionUmsantsa omncinci phakathi kweflank yebhawunti kunye nentambo ye-nati ibamba ukufuma kunye ne-electrolyte, idala ikroba elilambileyo ioksijini apho iisayithi ze-anodic zenza kwaye ukugqobhoza iqala;

2.I-galvanic corrosion- iingubo ezihlukeneyo okanye isinyithi (i-Dacromet bolt ene-electro-plated nut, i-stainless bolt kwi-nut galvanized) iqhube i-corrosion ekhethiweyo yecandelo elingaphantsi;

3.Umonakalo weCoating kwindibano- iintambo zikhuhla kunye nenyongo ngexesha lokuqinisa; i-electroplate encinci kunye neepeyinti zezinto eziphilayo zinqunyulwa ngokulula, ziveze intsimbi engenanto kwiingcambu zentambo;

4.Ukugxininiswa koxinzelelo- intambo yokuqala yokuthwala imithwalo ithwala isabelo esingalinganiyo sokulayishwa kwangaphambili, ngoko ke imigodi ye-corrosion apho ngokukhawuleza ibe yintanda yokudinwa;

5.Ukukhathazeka phantsi kokungcangcazela- i-micro-movement phakathi kobuso obuthweleyo ikhupha ifilimu, ibiza i-rust emhlophe kunye ne-rust ebomvu.

Nje ukuba iimveliso zomhlwa zakhiwe kwimisonto, i-nut iyayibamba, i-torque ye-disassembly idlula i-torque yofakelo, kwaye i-bolt okanye i-stud idla ngokufuneka inqunyulwe - ukusilela "kwe-nut ekhenkcezisiweyo" ekugcinweni kwentsimi.

3. Ukunyangwa koMhlwa kweSeti efanisiweyo

Inkqubo yokwambathisa (ibholithi + nati + iwasha)	Ukutyeba	I-NSS ukuya kumhlwa obomvu	Umsonto ufanelekile emva kokugquma	I-hydrogen embrittlement	Iindleko ezihambelanayo
I-Plain / self-umbala, i-oyile	—	< 24 h	Egqwesileyo	Akukho nanye	Elona liphantsi
Ipleyiti yeZinc + blue chromate	5 μm	≈ 48 h	Kulungile	Phezulu	Phantsi
Ipleyiti yeZinc + engqindilili ye-tri-passivate	8–12 μm	120–240 h	Kulungile	Phezulu	Phantsi-phakathi
Ukugalela oomatshini	20–50 μm	300–800 h	Kulungile	Phantsi kakhulu	Phakathi
I-Hot-dip galvanizing (i-nut icofa kwakhona)	45–85 μm	500–1,500 h	Ukucofa kwakhona kuyadingeka	Phantsi	Phakathi
IDacromet Class 2 (flZn 8)	8mm	≈ 720 h	Egqwesileyo	Akukho nanye	Phakathi
I-Dacromet Class 3 / emnyama	10–12 μm	≈ 1,000 h	Egqwesileyo	Akukho nanye	Phakathi-phezulu

Itheyibhile 1. Iinkqubo zokugquma kwiindibano zebholt-nut xa kuthelekiswa (amaxabiso aqhelekileyo oshishino).

Ngenxa yokuba i-coating isetyenziswe kwiindawo ezigqityiweyo, eziphathwe ngobushushu kwaye zinyangelwe ngaphantsi kweqondo lokushisa, zombini iibholithi kunye namantongomane zigcina iimpawu zazo ezipheleleyo ze-mechanical - amandla okuqina, umthwalo wobungqina kunye nobunzima kwi-ISO 898-1 / ISO 898-2 - ingatshintshi.

4. Ezona Nkqubo zilungileyo zeNdibano

1.Ungaze udibanise iinkqubo zokwaleka- izibini ze-Dacromet bolts kuphela kunye ne-Dacromet nuts kunye ne-washers; isibini esixubeneyo siqhuba i-galvanic corrosion yecandelo elibuthathaka (elihlala li-zinc-plated);

2.Hlonipha itafile yetorque- i-lubricated Dacromet pairs inomlinganiselo ophantsi, ozinzile ngakumbi kunentsimbi engenanto; ukusebenzisa kwakhona amaxabiso etorque endala kuqina ngaphezulu kwaye kunokukhulula imisonto yamandongomane;

3.Musa ukuthambisa kwakhona- i-topcoat edibeneyo sele ibeka i-coefficient ye-friction; ioli eyongezelelweyo kwimisonto itshintsha i-K ngokungalindelekanga;

4.Khumbula iodolo yejam-nut- xa i-nati encinci kunye ne-nut epheleleyo ifakwe (ilungiselelo lokuvala i-classic), qinisa i-nut epheleleyo ngokuchasene ne-nati encinci;

5.Qaphela ukugalelakwi pairs stainless - i-topcoat ye-lubricant ye-Dacromet ikwanciphisa umngcipheko we-galling kwi-stainless studs;

6. Qinisekisa i-torque-tension yenqaku lokuqalakwi-skid yokuvavanya, usebenzisa i-bolt-nut-washer yokwenene indibaniselwano ukusuka kwindawo yokuvelisa.

5. Ukuqukumbela

Ukungaphumeleli kokubola kunqabile ukuba kuqale kwi-shank yebholithi - iqala kwimisonto, kwikroba phakathi kwebholiti kunye ne nut. Ijoyinti elomeleleyo ke ngoko ifuna a iphakheji ehambelanayo yokhuseleko lomhlwa: I-Dacromet-coated bolts, nuts and washers in the same zinc-flake system, icaciswe kunye (ISO 10683 / ASTM F1136, flZn 8/10, ≥ 720 h NSS), ihlanganiswe kunye ne-torque echanekileyo kunye namaxabiso okubetha. Isiphumo siluqhagamshelo olunentambo olumelana nomhlwa omhlophe, irust ebomvu, i-pitting, i-crevice attack kunye nokuxhuzula - kwiminyaka yokutshiza ityuwa, imozulu kunye nokungcangcazela.

Ngaphambili. Okulandelayo.

Iindaba zamva nje