Hordhac Dacromet Hexagonal Bolts

2026-09-09

1. Hordhac

Injineerinka casriga ah iyo wax soo saarka, isku halaynta isku xirka farsamada waxay inta badan ku xiran tahay tayada iyo adkeysiga xirmooyinka. Ka mid ah daawaynta dusha kala duwan ee loo heli karo biraha birta ah, dahaarka Dacromet wuxuu u soo baxay tignoolajiyada hormuudka u ah bixinta ilaalinta daxalka ee gaarka ah iyada oo aan waxyeello loo geysan awoodda farsamada. Dhalooyinka laba geesoodka ah ee Dacromet - boolal madax lix geesood ah oo lagu daaweeyay daahan horumarsan ee zinc-aluminium flake - ayaa si weyn loogu qeexay warshadaha halkaas oo waxqabadka muddada-dheer ee xaaladaha adag ee deegaanka ay muhiim u yihiin.

Maqaalkani wuxuu bixiyaa dulmar guud oo ku saabsan boolal hexagonal Dacromet, oo daboolaya dabeecadda tignoolajiyada dahaarka, habka wax soo saarka, faa'iidooyinka waxqabadka muhiimka ah, isbarbardhigga dharka dhaqameed, codsiyada caadiga ah, iyo heerarka warshadaha ee khuseeya. Fahamka dhinacyadan waxay awood u siinaysaa injineerada, iibsadayaasha, iyo xirfadlayaasha dayactirka inay sameeyaan go'aano xog ogaal ah marka ay dooranayaan xirmooyinka codsiyada muhiimka ah.

2. Waa maxay Dakrometka

Dacromet (calaamad ka diiwaan gashan oo noqotay tilmaanta guud ee tignoolajiyada) waa nidaam aan elektaroonik ahayn, nidaamka daahan zinc-flake inorganic. Waxay ka kooban tahay ugu horrayn zinc ultra-fine ah iyo aluminium flakes oo ku kala firirsan binder-biyood ku salaysan oo ka kooban xeryahooda chromium. Codsiga iyo daaweynta ka dib, jajabku waxay sameeyaan qaab-dhismeed lamellar oo badan kaas oo bixiya xannibaad iyo difaac (cathodic) labadaba substrate-ka birta ee hoose.

Si ka duwan koronto-samaynta caadiga ah ama galvanization-ku-kulul, habka Dacromet kuma lug yeesho qaadashada aashitada ama kaydinta korantada. Taa baddalkeeda, qaybo ka mid ah sida caadiga ah si farsamaysan ayaa loo nadiifiyaa, la dhex geliyaa ama lagu buufiyaa hakinta daahan biyo-xidheenka ah (sida badan iyadoo la isticmaalayo habka dip-spin), ka dibna lagu daaweeyaa qiyaastii 300 ° C. Inta lagu jiro daawaynta, xidhuhu waxa uu samaysaa matrix aan dabiici ahayn oo cufan kaas oo xidha jajabyada birta ee meesha ku jira oo si adag ugu xidha birta salka.

Filimka soo baxay ayaa si cajiib ah u dhuuban—badanaaba kaliya 4–8 μm (micrometers)—walina waxa uu keenaa iska caabin daxaleed dhowr jeer ka weyn dahaarka zinc dhaqameed ee la barbardhigo ama dhumuc weyn. Muuqaalka la dhammeeyey waa sida caadiga ah lebbiska macdan-cawlan. Kala duwanaanshiyaha casriga ah, oo ay ku jiraan nidaamyada chrome-la dhimay iyo kuwa bilaa chrome (sida Geomet), wax ka qabta horumarinta xeerarka deegaanka iyadoo la ilaalinayo faa'iidooyinka waxqabadka asaasiga ah.

3. Bolts laba geesood ah iyo doorka daawaynta dusha sare

Boolalka laba geesoodka ah (sidoo kale loo yaqaan hex head bolts ama hexagon head screws) waxay ka kooban yihiin madax lix geesood ah oo u oggolaanaya wareegyada sare in lagu dabaqo furayaasha ama saldhigyada caadiga ah. Waxay ka mid yihiin xirayaasha ugu caansan ee loo isticmaalo dhismaha, baabuurta, mishiinada, iyo codsiyada dhismaha. Darajooyinku waxay u dhexeeyaan awood hoose (tusaale ahaan, heerka hantida 4.8) ilaa xoogga sare (8.8, 10.9, 12.9 iyo wixii ka dambeeya), oo laga soo saaray birta kaarboon ama birta daawaha iyo kulaylka-la daaweeyay si loo gaaro sifooyinka farsamada ee loo baahan yahay.

Daaweynta dusha sare waa mid muhiim ah sababtoo ah birta qaawan waxay u nugul tahay daxalka, taas oo yareyn karta awoodda rarka, qabashada dunta, ugu dambeyntiina u horseedda guuldarro wadajir ah. Ikhtiyaarada dhaqameed sida electro-galvanizing iyo galvanizing kulul ayaa leh xaddidaadyo si fiican loo yaqaan: Halis ku jirta hydrogen embrittlement ee birta xoogga badan, nolosha daxalka xad-dhaafka ah ee jawiga gardarrada ah, iyo faragelinta cabbirka ee ay keento dahaarka qaro weyn ee dunta wanaagsan. Dacromet waxaa loo sameeyay si looga gudbo cilladahaas.

4. Faa'iidooyinka Muhiimka ah ee Dacromet Hexagonal Bolts

4.1 Iska caabinta Daxalka Sare

In kasta oo dhumucdiisuna tahay 4-8 μm oo keliya, Dacromet waxay bixisaa ilaalinta daxalka oo caadi ahaan 7-10 jeer ka weyn koronto-galvanizing-ga caadiga ah. Tijaabada buufinta milixda dhexdhexaadka ah (ASTM B117 / ISO 9227), dahaarka Dacromet ee si habboon loo dabaqay waxay si joogto ah u dhaafaan 1,000 saacadood - oo badiyaa waxay gaadhaan 1,200 saacadood ama ka badan - iyada oo aan muuqan miridh cas. Qaar ka mid ah nidaamyada waxqabadka sare waxay gaadhaan xitaa waqti dheer. Waartan aan caadiga ahayn waxay ka timaadaa xayndaabka lakabka badan ee isku dhejinta zinc iyo flakes aluminium oo ay weheliso saamaynta maro ee xiraha aan noolaha ahayn.

4.2 Maqnaanshaha Embrittlement Hydrogen

Mid ka mid ah faa'iidooyinka ugu muhiimsan ee xirmooyinka-xoogga sare waa maqnaanshaha dhamaystiran ee khatarta ebrittlement hydrogen. Nidaamyada korantada ee dhaqameedku waxay ku lug leeyihiin nadiifinta aashitada iyo kaydinta cathodic, labaduba waxay soo bandhigi karaan hydrogen-ka atomiga shabka birta. Haydaroojinkani waxa uu sababi karaa jab jaban oo daahsan oo ku hoos jira diiqada adkaysiga-gaar ahaan khatarta ah fasalada hantida 10.9, 12.9 iyo ka sare. Sababtoo ah habka Dacromet ma isticmaalo qaadashada aashitada ama korantada, boolal xoog badan ayaa lagu dahaadhay si badbaado leh iyada oo la ilaalinayo daacadnimadooda farsamada.

4.3 Iska caabin kulayl oo heersare ah

Dahaarka Dacromet waxay ahaanayaan kuwo xasiloon oo ilaalinaya heerkul adeeg oo joogto ah ilaa 300 °C (iyo soo-gaadhista muddada gaaban xitaa sare). Electroplatings zinc caadiga ah waxay bilaabaan inay hoos u dhigaan oo ay lumiyaan iska caabbinta daxalka si ka hooseeya 100-150 °C. Degganaanshiyaha kulaylka ayaa ka dhigaya Dacromet boolal laba geesood ah oo ku habboon qolalka matoorka, nidaamyada qiiqa, foornooyinka warshadaha, iyo jawiyada kale ee heerkulku sareeyo.

4.4 Filimada khafiifka ah iyo waafaqsanaanta dunta

Dahaarka khafiifka ah, labbiska ah wuxuu ilaaliyaa cabbirrada dunta muhiimka ah iyo dulqaadka. Si ka duwan galvanizing-ku-kulul, kaas oo dhigaa 50-80 μm ama ka badan oo inta badan u baahan nuts weyn ama dunta dahaarka ka dambeeya daba-galka, boolal-dacromet-ku-xidhan waxaa lagu dhejin karaa lowska caadiga ah iyada oo aan la faragelin. Dahaarku waxa kale oo uu galaa meelaha bannaan, dunta gudaha, iyo joomatariyada adag ee ay adag tahay in si isku mid ah loogu saxo hababka korantada.

4.5 Ku-dhejin xooggan iyo dib-u-dejin

Filimka Dacromet ee la daweeyay ayaa si adag ugu dheggan substrate-ka birta ah. Waxa kale oo ay siisaa saldhig aad u fiican oo loogu talagalay koofiyadaha dabiiciga ah ee xiga ama rinjiga marka midabaynta dheeraadka ah, xakamaynta isku dhafka, ama shuruudaha bilicda ay jiraan. Jaakadaha dushooda-jilicsan ee la xakameeyey (sida Dacrolub ama nidaamyada Plus) ayaa had iyo jeer lagu dabaqaa si loo gaaro cilaaqaad joogto ah oo kacsan inta lagu jiro kulanka.

4.6 Faa'iidooyinka Deegaanka iyo Geedi socodka

Kiimikada biyaha ku salaysan iyo nidaamka codsiga xidh-xidhan ayaa dhaliya qashinka khatarta ah oo aad uga yar marka loo eego khadadka dhejiska caadiga ah. Halka qaababka caadiga ah ee Dacromet ay ka kooban yihiin chromium hexavalent, beddelka chromium-la'aanta casriga ah ama kuwa hooseeya (Geomet iyo kuwa la midka ah) waxay la kulmaan awaamiirta adag ee deegaanka sida RoHS, ELV, iyo REACH iyadoo la bixinayo waxqabad la mid ah.

5. Isbarbardhigga Dahaarka Dhaqanka

Jadwalka soo socdaa wuxuu soo koobayaa kala duwanaanshaha waxqabadka muhiimka ah ee u dhexeeya Dacromet iyo labada dahaarka dhaqameed ee ugu caansan:

Hanti	Dacromet	Electro-galvanizing	Galvanizing-kulul
Dhumucda dahaarka	4-8 μm	5-15 μm	50-80 μm
Buufis milix ah (aan lahayn miridh cas)	≥1,000-1,200 saac	100-300 saacadood	500-800 saacadood
Embrittlement Hydrogen	Midna	Khatar sare	Hooseeyo-dhexdhexaad
Iska caabinta kulaylka	Ilaa 300 °C	≤100C	≤200C
Saamaynta Fiican ee Thread	Ugu yar	Hoose	Muhiimad leh
Ku habboonaanta HS Bolts	Aad u fiican	Xaddidan	Dhexdhexaad

Shaxda 1. Dulmarka isbarbardhigga ee dahaarka caanka ah ee zinc-ku salaysan ee xirayaasha.

7. Gabagabo

Dhalooyinka laba geesoodka ah ee Dacromet waxay u taagan yihiin qaangaadh, xal wax qabad sare leh oo loogu talagalay codsiyada u baahan ilaalinta daxalka muddada-dheer, xasilloonida kulaylka, iyo maqnaanshaha isku-darka hydrogen-ka. Dahaarkooda khafiifka ah ee zinc-aluminium-ka ah ee khafiifka ah ee waxtarka leh waxay ka gudbaan qaar badan oo ka mid ah xaddidaadyada la xidhiidha galvanization-ka caadiga ah ee elektiroonigga ah iyo galvanizing-kuleelka, halka ay ku sii socon karaan shuruudaha cabbirka iyo isu-ururinta ee xirmooyinka saxda ah.

Iyadoo warshaduhu ay sii wadaan inay riixaan nolol dheer oo adeeg ah, hoos u dhigista dayactirka, iyo u hoggaansanaanta shuruucda deegaanka ee sii kordheysa, qaadashada dahaarka horumarsan ee zinc-flake-oo ay ku jiraan noocyo casri ah oo-chrome-free-waxaa la filayaa inay ballaariso. Injineerada iyo qorayaasha qeexitaannada, xulashada boolallaha laba geesoodka ah ee Dacromet-ku dahaaran waa istaraatijiyad la xaqiijiyay oo kor loogu qaadayo isku halaynta wadajirka ah ee daxalka, heerkulka sare, ama deegaanka xoogga badan.

Marka la tilmaamayo xirmooyinkan, waa in fiiro gaar ah loo yeeshaa dahaadhka darajada (miisaanka dahaarka), jaakadaha dusha sare ee ikhtiyaarka ah ee xakamaynta isku dhaca, heerka hantida maaddada aasaasiga ah, iyo xaqiijinta u hoggaansanaanta heerarka caalamiga ah ama macaamiisha. Xulashada saxda ah iyo codsiga tayada lagu xakameynayo waxay hubisaa in kartida waxqabadka buuxa ee tignoolajiyada Dacromet lagu xaqiijinayo adeegga.