Dacromet Hex Nuts-hordhac Farsamo 

1. Hordhac

Nuska laba geesoodka ah (hex nuts) ayaa ka mid ah xireyaasha aadka loo isticmaalo ee isku xirka farsamada, dhismaha, baabuurta, iyo codsiyada warshadaha. Marka lagu daro daawaynta dusha sare leh sida Dacromet daahan, waxay bixiyaan iska caabin daxalka oo gaar ah iyadoo la ilaalinayo dulqaadka saxda ah ee cabbirka iyo hufnaanta farsamada.

1.1 Waa maxay Hex nuts?

Hex lawska waa nooc ka mid ah xireha leh qaab dibadda ah oo laba geesood ah iyo dalool dun gudaha ah. Naqshadaynta lix-dhinac ah ayaa u oggolaanaysa isticmaalka qulqulka wax ku oolka leh iyada oo la adeegsanayo furayaasha ama saldhigyada caadiga ah. Hex nuts waxaa sida caadiga ah loo soo saaraa iyadoo loo eegayo heerarka caalamiga ah sida ISO 4032 (qaabka 1 nuts caadiga ah), DIN 934, ama ASME B18.2.2, oo daboolaya cabbirro kala duwan oo metric iyo imperial ah.

Astaamaha joomatari ee muhiimka ah waxa ka mid ah dhexroorka dunta magacuyaalka ah (d), garoonka (P), ballaca guryaha dabaqyada ah, ballaca geesaha (e), iyo dhererka lowska (m). Fasallada hantida (tusaale, 8, 10, 12 ee birta) waxay qeexaan xoogga farsamada si ay u dhigmaan buundooyinka boolka ee u dhigma.

1.2 Dulmarka Dacromet

Dacromet waa daahan biyo-ku-saleysan, oo aan koronto lahayn oo zinc-aluminium flake ah oo la sameeyay 1970-meeyadii. Waxay ka kooban tahay zinc iyo aluminium flakes si fiican loo kala firdhiyey oo ku xayiran xiraha chromate-ka aan noolaha lahayn (ama chromium-free). Ugu horrayn waxaa lagu dabaqaa hababka lagu buufiyo ama lagu buufiyo waxaana lagu daaweeyaa qiyaastii 280-320 °C, waxay sameysaa dhuuban (sida caadiga ah 5-12 μm), labis, filim ilaalin ah oo qalin-cawlan.

Si ka duwan sida korantada dhaqameedka ama galvanization-ku-kuleelka, Dacromet waxay bixisaa ilaalin heer sare ah oo daxalka ah iyada oo aan la helin khatarta qallafsanaanta hydrogen - taasoo ka dhigaysa mid si gaar ah ugu habboon xirmooyinka xoogga badan (fasalka 10.9 iyo 12.9).

2. Dacromet Technology Coating

2.1 Halabuurka iyo Qaab-dhismeedka

Dahaarku wuxuu ka kooban yahay lakabyo is-dul-saaran oo zinc iyo aluminium ah oo jajaban oo ay ku xiran yihiin matrix aan organic ahayn. Qaab dhismeedkan lamellar waxa uu abuuraa caqabado badan oo jidheed oo ka dhan ah qoyaanka iyo ionada wasakhaysan, halka zinc uu bixiyo ilaalin allabaryo (galvanic). Aluminiumku wuxuu wanaajiyaa sifooyinka xannibaadda iyo caabbinta kulaylka.

Jaantus 2. Qaab dhismeedka lakabka badan ee la fududeeyay ee daahan Dacromet ee substrate-ka birta ah

2.2 Habka Codsiga

Habka isku xigxiga ee caadiga ah waa:

1. Diyaarinta dusha sare - Nadiifinta alkaline-ka iyo nadiifinta xoqidda (aan lahayn pickling acid).
2. Codsiga dahaarka - maroojiso ama buufin biyaha ku salaysan zinc-aluminium slurry.
3. Centrifuging - ka saarida dahaarka xad-dhaafka ah si loo hubiyo dhumucdiisuna tahay lebbiska.
4. Daawaynta - dubista at ~ 300 °C 15-30 daqiiqo si aad u sameyso filimka aan dabiiciga ahayn ee cufan. Jaakado badan ayaa laga yaabaa in lagu codsado darajooyinka waxqabadka sare.

2.3 Faa'iidooyinka Muhiimka ah

• Iska caabbinta daxalka aadka u wanaagsan: 1,000-2,000+ saacadood buufin milix ah (ASTM B117) ilaa miridhku casaanka ah - caadi ahaan 5-10 jeer ayaa ka wanaagsan dahaadhka zinc caadiga ah.
• Majirto dhaldhalaalka hydrogen: Habka aan electrolytic ahayn ayaa badbaado u ah birta xoogga badan (10.9 / 12.9).
• Dahaarka khafiifka ah (5-12 μm): Wuxuu ilaaliyaa ku habboonaanta dunta iyo saxnaanta cabbirka; looma baahna in la dhaafo.
• Iska caabin heerkul sarreeya: Deggan ilaa 300 °C adeeg joogto ah.
• Daboolista lebbiska: Galitaanka heer sare ah ee meelaha bannaan, dunta, iyo joomatariyada adag iyadoo loo marayo dip-spin.
• Isku-dhafka is-daba-joogta ah: Waxaa lagu dari karaa koofiyadaha dushooda ee saliidda leh si loo xakameeyo waxqabadka torque-tension.

Jaantuska 3. Isbarbardhigga sawir ee waxqabadka buufinta milixda

2.4 Isbarbardhigga Dahaarka Kale

Shaxda 1. Isbarbardhigga waxqabadka ee dahaarka xirmooyinka caadiga ah

3. Hex nuts - Heerarka, Cabbirrada & Xoogga

3.1 Heerarka Caalamiga ah

Heerarka ugu caansan ee looska hex metric waa ISO 4032 (qaabka 1 nuts caadiga ah) iyo kan da'da weyn laakiin weli si weyn loo isticmaalo DIN 934. Heerarkani waxay qeexayaan cabbirrada, dulqaadka, iyo darajooyinka alaabta (A, B, C). Qaybaha hantida ee looska birta ah waxaa lagu qeexay ISO 898-2 (tusaale ahaan, fasalada 6, 8, 10, 12).

Fiiro gaar ah: DIN 934 iyo ISO 4032 wax yar ayay ku kala duwan yihiin cabbirada guryaha dabaqyada ah ee cabbirrada qaarkood (tusaale, M10, M12, M22). Had iyo jeer xaqiiji iswaafajinta marka la isku daro heerarka.

3.2 Cabbirrada Metric Common (ISO 4032 Habka 1)

Shaxda 2. Cabbirrada lowska hex ee la xushay (ISO 4032, mm). s = ballaca guryaha; e = ballaca geesaha; m = dhererka lowska.

3.3 Fasalada hantida & isku-habboonka

Miraha waa in la isbarbar dhigaa quwadda boltka si loo hubiyo in wadajirku u fashilmo hab la xakameeyey (gaar ahaan boltka). Lammaanayaasha guud ee hoos yimaada ISO 898-2:

• Heerka Bolt 8.8 → Nut class 8 ama ka sareeya
• Heerka Bolt 10.9 → Nut class 10 ama ka sareeya
• Heerka Bolt 12.9 → Nut class 12

Dahaarka Dacromet wuxuu si gaar ah qiimo ugu leeyahay fasalka 10 iyo 12 lowska sababtoo ah geeddi-socodku ma soo bandhigo khatar isku-dhafan oo hydrogen ah oo wax u dhimi karta walxaha xoogga badan.

4. Codsiyada Dacromet Hex Nuts

Looska hex-ka-dahaarka leh ayaa ka sarreeya meel kasta oo iska caabbinta daxalka sareeyo, saxnaanta cabbirka, iyo isku halaynta farsamada ayaa isku mar looga baahan yahay:

Gawaarida & Gaadiidka

Qaybaha chassis-ka, nidaamyada hakinta, kulanada biriiga, xidhayaasha mishiinka, iyo qaybaha jidhka hoostiisa ee soo gaadhay milixda wadada iyo heerkulka sare.

Tamarta Dabaysha & Kaabayaasha

Daboolka dhaadheer iyo xidhayaasha aasaaska marawaxadaha dabaysha ee xeebaha iyo xeebaha, halkaas oo soo-gaadhista milixdu ay ka badan karto 2,000 oo saacadood oo looga baahan yahay ilaalinta.

Dhismaha & Mashiinada Culus

Isku xirka qaab dhismeedka, qalabka beeraha, makiinadaha macdanta, iyo rakibaadaha dibadda ee ku xiran cimilada iyo soo-gaadhista kiimikada.

Deegaanka Badda & Kiimikada

Qalab sagxadda dhulka hoostiisa mara, iyo qalabka farsamaynta halka dahaarka dhaqameedku si degdeg ah u hoos u dhacaan.

4.1 Tilmaamaha Xulashada

Shaxda 3. Hagaha xulashada degdega ah ee looska hex ee dahaarka leh

5. Gabagabo

Dacromet hex nuts waxay isku daraan isku halaynta farsamada iyo joomatari jaangooyo ee looska laba geesoodka ah ee dhaqanka iyo ilaalinta daxalka sare ee tignoolajiyada flake zinc-aluminium. Dahaarkooda khafiifka ah, lebbiska ah ayaa ilaaliya ka-qaybgalka dunta iyo joogteynta qulqulka, halka ay bixinayaan waxqabadka buufinta milixda oo aad uga sarreeya dahaadhidda zinc-ga caadiga ah oo ka madax-bannaan walaacyada hydrogen-embrittlement.

Injineerada iyo iibsadayaasha u tilmaamaya xirmooyinka baabuurta, tamarta dib loo cusboonaysiin karo, kaabayaasha, ama bay'ada warshadaha qallafsan, Dacromet-dahaarka hex nuts waxay siisaa dheellitirka la xaqiijiyay ee adkeysiga, saxda ah, iyo waxtarka-waxtarka muddada-dheer.

Markaad dooranayso alaabta, had iyo jeer xaqiiji dahaarka darajada (A/B ama wax u dhigma), qiimaynta buufinta milixda, isku xidhka isku xidhka (haddii koodhka dushiisa ee saliidaysan lagu dabaqo), iyo waafaqsanaanta fasalka bolt-ka iyo xaaladaha deegaanka ee codsiga ugu dambeeya.

Tixraacyada & Heerarka: ISO 4032, ISO 898-2, DIN 934, ASTM B117, xaashida xogta soo saaraha ee nidaamyada Dacromet / zinc-flake (tusaale, DACROMET®, GEOMET®).