Bolts-Dacromet-dahaarka leh iyo nuts

2026-10-28

1. Hordhac

Xidhiidhka duntu waxa uu u xoog badan yahay sida qaybtiisa ugu liidata. Hex bolt Dacromet-dahaar leh oo qaali ah oo lagu shubay lowska zinc-plated raqiis ah maaha nidaamka ilaalinta daxalka - waa unugga galvanic sugaya fashil. Lowska zinc-plated wuxuu noqdaa anode ku jira lammaanaha, wuu daxaleeyaa doorbidayaa, wuxuu qabtaa dunta birta, dhammaan kala-goysyada oo dhan waxay luminayaan culeyska isku dhejinta ka hor inta uusan boolka laftiisa muujin miridh guduudan.

Sababtan awgeed, qeexitaannada xiraha xirfadleyda ayaa had iyo jeer daaweeya boolal, lawska iyo weel dhaqida sida hal xirmo ilaalin daxalka. Dacromet (zinc-aluminium flake, non-electrolytic) daahan waa nidaamka xulashada xirmadan: waxay ku siinaysaa dun kasta - lab iyo dheddigga - khafiif ah (5-12 μm), lebbiska, filim aan hydrogen lahayn oo u adkaysta saacadaha 500-1,000 ee buufin dhexdhexaad ah oo cusbo ah (NSS) oo aan lahayn dillaac cad oo miridhku ama midab casaan ah.

Maqaalkani waxa uu sharxayaa qoysaska isku xidha ee ku lug leh, hababka daxalka ee weerara kala-goysyada dunta leh, sababta Dacromet ay ugu habboon tahay boolal iyo laws si isku mid ah, iyo sida loo qeexo loona ururiyo qalab-dhaqista bolt-nut-ku habboon.

2. Sida Daxalku u Weeraro Wadajirka Xadhkaha leh

Xadhkaha ayaa ah joomatari ugu nugul daxalka ee isku xidhka kasta:

1.Crevice daxalka- Farqiga aadka u yar ee u dhexeeya dunta dunta iyo dunta lowska ayaa dabinaysa qoyaanka iyo elektrolytka, taas oo abuuraysa qulqulka oksijiinta gaajaysan halkaas oo ay ka samaysan yihiin goobo anodic ah iyo goynta bilaabmaa;

2.Daxalka Galvanic- dahaarka aan la mid ahayn ama biraha (Bolt Dacromet leh lowska elektarooniga ah, bool aan wasakh lahayn oo lowska galvanized ah) waxay wadaan daxalka doorbidka leh ee qaybta sharafta yar;

3. Burburka dahaarka ee fadhiga- duntu xoqo oo xameetida inta lagu jiro adkaynaya; korantada khafiifka ah iyo rinjiga organic si fudud ayaa loo gooyaa, soo bandhigaya birta qaawan ee xididdada dunta;

4.Stress diiradda- dunta ugu horeysa ee xamaaradu waxay sitaa qayb aan fiicneyn oo horudhac ah, sidaas darteed godadka daxalka ayaa si degdeg ah u noqda dildilaaca daalka;

5.Fretting hoos gariir- Dhaqdhaqaaq yar oo u dhexeeya weji-jiidka ayaa tirtira filimka, martiqaadaya miridhku cad ka dibna miridhku cas.

Marka alaabada miridhku ay ku dhismaan dunta, lawska ayaa qabsada, torque disassembly ka badan yahay la rakibo, iyo bolt ama urka inta badan waa in la gooyaa - classic "nut barafaysan" guuldarada dayactirka beerta.

3. Iska-caabbinta Daxalka ee Isku-habboon

Habka dahaarka (bolt + lowska + dhaqaha)	Dhumucda	NSS ilaa miridhku cas	Xadhkaha ku habboon dahaarka ka dib	Ebrittlement Hydrogen	Qiimaha qaraabada
Midab cad/is-midab leh, saliid leh	—	< 24 saac	Aad u fiican	Midna	Ugu hooseeya
Saxan Zinc + chromate buluug ah	5 μm	≈ 48 saac	Wacan	Sare	Hoose
Saxan Zinc + tri-passivate qaro weyn	8-12 μm	120-240 saac	Wacan	Sare	Dhexdhexaad hoose
galvanization makaanik	20-50 μm	300-800 saacadood	Wacan	Aad u hooseeya	Dhexdhexaad
Galvanizing-kulul (looska dib loo taabtay)	45-85 μm	500-1,500 saacadood	Dib u taabajinta ayaa loo baahan yahay	Hoose	Dhexdhexaad
Dacromet fasalka 2 (flZn 8)	8 μm	≈ 720 saac	Aad u fiican	Midna	Dhexdhexaad
Dacromet Class 3 / madow	10-12 μm	≈ 1,000 saac	Aad u fiican	Midna	Dhexdhexaad-sare

Shaxda 1. Nidaamyada dahaarka ee shirarka bolt-nut marka la barbardhigo (qiimaha warshadaha caadiga ah).

Sababtoo ah dahaarka waxaa lagu dabaqaa dhammayn, qaybaha kulaylka lagu daaweeyay oo laga daaweeyay heerkulka heerkulka, labada boolal iyo lowska labaduba waxay sii hayaan sifooyinkooda makaanikada oo buuxa - xoogga adkaysiga, culeyska caddaynta iyo adayga ISO 898-1 / ISO 898-2 - isma beddelin.

4. Golaha Dhaqanka ugu Fiican

1.Weligaa ha isku darin nidaamyada daahan- Ku xidh boolal Dacromet ah oo kaliya oo leh nuts Dacromet iyo weelasha; lammaane isku dhafan ayaa kaxeeya daxalka galvanic ee qaybta daciifka ah (sida caadiga ah zinc-plated);

2.Ixtiraam miiska torque-ga- Lammaanaha Dacromet ee saliidaysan waxay leeyihiin qodob lowska ka hooseeya, ka xasilloon marka loo eego birta qaawan; dib u adeegsiga qiyamka durdurrada duugga ah ayaa aad u adkeysata waxaana laga yaabaa in laga xayuubiyo dunta lowska;

3. Dib ha u saliidin- koodhka isku dhafan ee dusha sare ah ayaa horey u dejinaya isku-dhafka isku-dhafka; saliid dheeraad ah oo ku saabsan dunta ayaa isbedeleysa K si aan la saadaalin karin;

4. Maskaxda ku hay amarka jam-nut- marka lowska dhuuban iyo lowska buuxa la isku dhejiyo (qaabaynta qufulka caadiga ah), ku adkee lowska buuxa ee lowska khafiifka ah;

5.Ka ilaali xameetidaLammaanaha aan-waranka lahayn - Koodhka dufanka leh ee Dacromet wuxuu sidoo kale yareeyaa khatarta xameetida ee birta aan nadiifka ahayn;

6.Verify torque-tension-qodob-qodobmarka la isticmaalayo boodboodka tijaabada ah, adoo isticmaalaya isku dhafka bolt-nut-washer ee ka soo baxa wax soo saarka.

5. Gabagabo

Burburka daxalka marar dhif ah ayuu ku bilaabmaa gunta boodhka - waxay ka bilaabataa dunta, daloolka u dhexeeya boodhka iyo lowska. Wadajir waara sidaas darteed waxay dalbanaysaa a xirmo ku habboon daxalka-ilaalinta: boolal-dacromet-dahaarka leh, lawska iyo weelasha isku midka ah ee habka zinc-flake, oo si wadajir ah loo qeexay (ISO 10683 / ASTM F1136, flZn 8/10, ≥ 720 h NSS), oo lagu soo ururiyay qulqulka saxda ah iyo qiyamka isku dhafka. Natiijadu waa isku xirka dunta oo iska caabiya miridhku cad, miridhku guduudan yahay, godadka, werarka dillaaca iyo suuxdinta - iyada oo sannado badan lagu buufiyay cusbo, cimilada iyo gariirka.

Horay Xiga.

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