Hex Bolts-Dacromet-dahaarka leh

2026-10-27

1. Hordhac

bolts hex (bolalka madaxa hexagon) ayaa ka mid ah xireyaasha aadka loo isticmaalo dhismaha, mishiinada, isu imaatinka baabuurta, iyo kaabayaasha. Deegaannada daxalka ah - qaab-dhismeedka xeebaha, dhirta kiimikada, waddooyinka waaweyn, buundooyinka, iyo munaaradaha birta ee dibadda - nolosha adeegga ee isku-dhafka xiran ayaa inta badan lagu go'aamiyaa xoogga birta, laakiin waa adkaysiga daboolka ilaalinta.

Daahan Dacromet (sidoo kale loo yaqaan DACROMET, Dacromet zinc-flake daahan, ama daahan zinc-aluminium flake) waa daahan biyo-ku-saleysan beddelaad-iyo-dahaar lagu dabaqo habsocod-spin ama buufin waxaana lagu daaweeyaa heerkul hooseeya. Tan iyo markii la abuuray ee Maraykanka ee 1970-meeyadii iyo warshadeynteedii xigtay ee Japan iyo Europe, Dacromet waxay noqotay xalka caadiga ah ee ilaalinta daxalka ee boolal-xoog-sare, gaar ahaan fasalada 8.8 iyo wixii ka sareeya, halkaas oo galvanizing-ku-kulul-dhaqameed dhaqameed uu xambaarsan yahay khataraha hufnaanta hydrogen iyo dhibaatooyinka cabbirka.

2. Waa maxay Hex Bolt-Dakromet-ku-daboolan?

Dacromet-dahaarka hex bolt waa madaxa hexagon-ka caadiga ah (sida ISO 4014 / ISO 4017 / DIN 931 / DIN 933 ama ASME B18.2.1) kaas oo korkiisa lagu ilaaliyo daahan zinc-flake ku salaysan oo laga soo saaray qulqulka biyaha ku salaysan:

Fasaxyada Zinc iyo kuwa aluminiumka ah- caqabada ilaalinta daxalka ee firfircoon (saamiga caadiga ah ee ku dhawaad 75% Zn / 25% Al oo leh waxyaabo adag);
Iskudhisyada Chromium ama passivators-ka-free-chromium- Bixinta dareenka is-bogsiinta ee meelaha xoqan;
Xirayaasha aan organic ahayn iyo dhumucda cellulose- ku dheji fiilooyinka ku jira filim cufan, oo ku dheggan;
Biyo dheecan- dhexdhexaadiyaha qaada, samaynta habka VOC-free iyo deegaanka saaxiibtinimo.

Dahaarka waxaa lagu dabaqaa iyadoo la durayo (ama buufinayo) oo ay ku xigto wareegyada centrifugal si meesha looga saaro qulqulka xad-dhaafka ah, ka dibna lagu daaweeyaa qiyaastii 280-330 ° C 20-40 daqiiqo. Wareegyo-muquunis badan (sida caadiga ah laba) waxay dhisaan dhumucda daahan ee 6-10 μm; fasalada culus waxay gaadhaan 12-15 μm.

Astaamaha Muhiimka ah ee Habka Dacromet

Muuqaal	Sharaxaada
Daawaynta heerkulka	280-330C (oo ka hooseeya heerkulka kulaylka ee fasalka 10.9/12.9 boolal)
Dhumucda dahaarka	6-15 μm (class-ku-tiirsane), aad uga khafiifsan galvanizing-kuleelka (45-85 μm)
Ebrittlement Hydrogen	Ma jiro aashito oo la soo ururiyo, ma jirto koronto-soo-saarid - wax khatar ah ma leh hydrogen embrittlement
Hex madaxa ku habboon	Dahaarka khafiifka ah ee lebbiska ah wuxuu ilaaliyaa joomatari dunta - boolalku waxay ku lammaan yihiin qasabadaha caadiga ah iyo lowska
Muuqaalka deegaanka	Biyo-ku-saleysan, ma jiro qiiqa VOC; chromium-free (Cr³⁺/Cr⁶⁺-free) kala duwanaansho la heli karo
korantada korantada	Filim wax-ku-ool ah, oo ku habboon qaab-dhismeedka-muhiimka ah

Shaxda 1. Tilmaamaha muhiimka ah ee habka daahan Dacromet.

3. Habka Ilaalinta Daxalka

Dacromet waxay ku ilaalisaa substrate-ka birta iyada oo loo marayo saddex hab oo is dhammaystir ah:

1. Saamaynta xannibaaddaZinc iyo aluminium flakes oo is dulsaaran waxay sameeyaan filim la dahaadhay oo leh waddo aad u daran oo si weyn u yaraynaysa dhexgalka biyaha, ogsijiinta, iyo ion chloride.

2.Ilaalinta allabaryo- zinc wuu ka sharaf yar yahay birta; gees kasta oo xoqan ama la gooyo, zinc si doorbidan wuu daxaliyaa wuxuuna si cad u ilaaliyaa birta qaawan.

3.Passivation / is-bogsiinPassivators waxay sameeyaan filimo oksaydh ah oo aan milmi karin meelaha dhaawacan, "bogsiinaya" xagashada yaryar iyo dib u dhigista miridhku cad iyo samaynta miridhku cas.

Isku darka saddexdan habab ayaa sharraxaya sababta daaha Dacromet ay si joogto ah u gaarsiiyaan 500-1,000 saacadood si ay miridhku u helaan tijaabada buufinta milixda dhexdhexaadka ah (sida ISO 9227 / ASTM B117) ee dhumucdiisuna tahay 6-10 μm oo keliya - dhowr jeer waxqabadka u dhigma dhumucda elektro-galvanizing.

4. Gabagabo

Dacromet-dahaarka hex bolts waxay isku daraan xoogga farsamada ee fasalada hantida caadiga ah 8.8-12.9 oo leh dhuuban, labis, hydrogen-ammaan ah, iyo nidaamka ilaalinta daxalka. Iyada oo waxqabadka buufinta milixdu ay dhowr jeer ka fiican tahay koronto-galvanizing oo qayb yar oo ka mid ah dhumucda dhumucda kululaynta galvanizing, Dacromet waxa ay noqotay qeexitaanka asalka ah ee xirayaasha xoogga badan ee dalbanaya kaabayaasha, tamarta, iyo mashaariicda gaadiidka.

Iibsadayaasha iyo injineerada, qodobbada go'aannada muhiimka ah waa fasalka daahan ( dhumucdiisuna waxay tahay saacadaha NSS ), nooca chromate (Cr³⁺ vs Cr-free), xakamaynta isku-dhafka isku-dhafka ah, iyo u hoggaansanaanta ISO 10683 / ASTM F1136. Dacromet hex bolt oo si habboon loo cayimay waxa uu keenaa la saadaalin karo, daacadnimada wadajirka ah ee muddada dheer - xitaa meelaha ugu adag.

Ma Hayso. Xiga.

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