I-Dacromet-Coated Bolts namantongomane

2026-10-28

1. Isingeniso

Uxhumano oluluchungechunge luqine njengengxenye yalo ebuthaka kakhulu. Ibhawudi ye-hex ehlanganiswe ne-Dacromet eshibhile efakwe enatini elicwecwe nge-zinc ayilona uhlelo lokuvikela ukugqwala - iyinhlangano. i-galvanic cell elindele ukwehluleka. I-zinc-plated nut iba i-anode kumbhangqwana, igqwala ngokukhethayo, ibambe imicu yebhawudi, futhi ilunga lonke lilahlekelwa umthwalo walo wokubopha ngaphambi kokuba ibhawudi ngokwalo libonise noma yikuphi ukugqwala okubomvu.

Ngalesi sizathu, ukucaciswa kwe-fastener kochwepheshe kuhlala kuphatha amabhawodi, amantongomane namawasha njengephakethe elilodwa elihambisana nokuvikela ukugqwala. I-Dacromet (i-zinc-aluminium flake, i-non-electrolytic) iyindlela yokuzikhethela yale phakheji: inikeza yonke intambo - owesilisa nowesifazane - ifilimu elincanyana (5-12 μm), iyunifomu, ifilimu engenawo i-hydrogen ebekezelela amahora angama-500-1,000 we-neutral salt spray (NSS) ukuchayeka ngaphandle kokugqwala okumhlophe noma ukugqwala okubomvu.

Lesi sihloko sichaza imindeni yeziqinisi ehilelekile, izindlela zokugqwala ezihlasela amalunga anentambo, kungani i-Dacromet ifanela amabholithi namantongomane ngokufanayo, nendlela yokucacisa nokuhlanganisa isethi efanisiwe ye-bolt-nut-washer.

2. Ukugqwala Kuhlasela Kanjani Ilunga Elinentambo

Imicu iyijiyomethri engagqwala kakhulu kunoma iyiphi inhlanganisela yesixhumi:

1.Ukugqwala kweCrevice- igebe elincanyana phakathi kwebhawodi leflank nentambo yamantongomane livalela umswakama kanye ne-electrolyte, lidale umfantu obulawa yindlala yomoya-mpilo lapho kwakheka khona amasayithi e-anodic futhi umgodi iqala;

2.Galvanic corrosion- Izembatho noma izinsimbi ezingafani (ibhawodi ye-Dacromet enamantongomane e-electro-plated, ibhawodi elingagqwali enatini elithathiwe) iqhubekisela phambili ukugqwala okukhethekile kwengxenye engahlonipheki kangako;

Ukulimala kwe-3.Coating emhlanganweni- izintambo zikhuhla kanye nenyongo ngesikhathi sokuqinisa; i-electroplate emincane kanye nopende bezinto eziphilayo banqanyulwa kalula, baveze insimbi engenalutho ezimpandeni zentambo;

4.Ukugxila ekucindezelekeni- intambo yokuqala ethwala imithwalo ithwala ingxenye engalingani yokulayisha kuqala, ngakho imigodi yokugqwala lapho iba imifantu yokukhathala;

5.Ukukhathazeka ngaphansi kokudlidliza- Ukunyakaza okuncane phakathi kobuso obuthwele kulimaza ifilimu, kubize ukugqwala okumhlophe bese kuba nokugqwala okubomvu.

Uma imikhiqizo yokugqwala seyakhiwe emicucu, inathi liyabanjwa, itorque ehlakazwayo idlula itorque yokufaka, futhi ibhowudi noma i-stud ngokuvamile kufanele inqunywe - ukwehluleka "kwamantongomane afriziwe" ekunakekeleni insimu.

3. Ukumelana Nokugqwala Kwesethi Efanisiwe

Isistimu yokuhlanganisa (ibhawodi + nati + iwasha)	Ubukhulu	I-NSS ibe nokugqwala okubomvu	I-thread ilingana ngemuva kokunamathela	I-hydrogen embrittlement	Izindleko ezihlobene
I-Plain / self-color, igcotshwe amafutha	—	< 24 h	Kuhle kakhulu	Lutho	Okuphansi kakhulu
Zinc plate + blue chromate	5 umm	≈ 48 h	Kuhle	Phezulu	Phansi
Ipuleti le-Zinc + i-tri-passivate ewugqinsi	8-12 μm	120–240 h	Kuhle	Phezulu	Okuphansi-okumaphakathi
I-Mechanical galvanizing	20-50 μm	300–800 h	Kuhle	Iphansi kakhulu	Maphakathi
I-hot-dip galvanizing (inadi liphinde lithephelwe)	45–85 μm	500–1,500 h	Ukuthepha kabusha kuyadingeka	Phansi	Maphakathi
I-Dacromet Class 2 (flZn 8)	8 umm	≈ 720 h	Kuhle kakhulu	Lutho	Maphakathi
I-Dacromet Class 3 / emnyama	10-12 μm	≈ 1,000 h	Kuhle kakhulu	Lutho	Ukuphakama okuphakathi

Ithebula 1. Amasistimu wokumboza ama-bolt-nut assemblies uma kuqhathaniswa (amanani emboni ajwayelekile).

Ngenxa yokuthi ukugqoka kusetshenziselwa izingxenye eziphelile, eziphethwe ukushisa futhi zelashwe ngaphansi kwezinga lokushisa elishisayo, kokubili amabhawudo namantongomane agcina izakhiwo zawo ezigcwele zemishini - amandla aqinile, umthwalo wobufakazi nobulukhuni nge-ISO 898-1 / ISO 898-2 - ingashintshiwe.

4. Imikhuba Engcono Kakhulu Yomhlangano

1.Ungalinge uxube izinhlelo zokugqoka- bhanqa amabhawodi e-Dacromet kuphela ngamantongomane e-Dacromet namawasha; umbhangqwana oxubile ushayela ukugqwala kwe-galvanic yengxenye ebuthakathaka (imvamisa i-zinc-plated);

2.Hlonipha itafula le-torque- amapheya e-Dacromet agcotshiwe anento ephansi, ezinzile yamantongomane kunensimbi engenalutho; ukusebenzisa kabusha amanani etorque endala kuyaqina futhi kungase kuhlubule izintambo zamantongomane;

3.Ungaphinde ugcobe- ijazi elihlanganisiwe selivele lisetha i-coefficient yokungqubuzana; amafutha engeziwe emicu ishintsha K ngokungalindelekile;

4.Qaphela ukuhleleka kwe-jam-nut- lapho inati elincanyana kanye nenati eligcwele linqwabelene (ukuhlelwa kokukhiya okujwayelekile), qinisa inadi eligcwele ngokumelene nenati elincanyana;

5.Qaphela ukugayakumapheya angagqwali - ijazi lokuthambisa lika-Dacromet liphinde linciphise ubungozi be-galling kuma-stainless studs;

6.Qinisekisa i-torque-tension ye-athikili yokuqalakuskidi sokuhlola, kusetshenziswa inhlanganisela ye-bolt-nut-washer yangempela evela endaweni yokukhiqiza.

5. Isiphetho

Ukwehluleka kokugqwala akuvamile ukuthi kuqale ku-shank yebhawodi - kuqala emiculweni, emfantwini phakathi kwebhawodi namantongomane. Ngakho-ke ilunga eliqinile lidinga a iphakheji ehambisanayo yokuvikela ukugqwala: Amabhawudo, amantongomane namawasha ahlanganiswe nge-Dacromet ohlelweni olufanayo lwe-zinc-flake, acaciswe ndawonye (ISO 10683 / ASTM F1136, flZn 8/10, ≥ 720 h NSS), ahlanganiswe netorque elungile kanye namanani wokungqubuzana. Umphumela uwuxhumano olunentambo olumelana nokugqwala okumhlophe, ukugqwala okubomvu, ukugqwala, ukuhlaselwa kwemifantu nokubanjwa - phakathi neminyaka yokufuthwa kukasawoti, isimo sezulu nokudlidliza.

Okwedlule. Okulandelayo.

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