- English
- Chinese
- French
- German
- Portuguese
- Spanish
- Russian
- Japanese
- Korean
- Arabic
- Irish
- Greek
- Turkish
- Italian
- Danish
- Romanian
- Indonesian
- Czech
- Afrikaans
- Swedish
- Polish
- Basque
- Catalan
- Esperanto
- Hindi
- Lao
- Albanian
- Amharic
- Armenian
- Azerbaijani
- Belarusian
- Bengali
- Bosnian
- Bulgarian
- Cebuano
- Chichewa
- Corsican
- Croatian
- Dutch
- Estonian
- Filipino
- Finnish
- Frisian
- Galician
- Georgian
- Gujarati
- Haitian
- Hausa
- Hawaiian
- Hebrew
- Hmong
- Hungarian
- Icelandic
- Igbo
- Javanese
- Kannada
- Kazakh
- Khmer
- Kurdish
- Kyrgyz
- Latin
- Latvian
- Lithuanian
- Luxembou..
- Macedonian
- Malagasy
- Malay
- Malayalam
- Maltese
- Maori
- Marathi
- Mongolian
- Burmese
- Nepali
- Norwegian
- Pashto
- Persian
- Punjabi
- Serbian
- Sesotho
- Sinhala
- Slovak
- Slovenian
- Samoan
- Scots Gaelic
- Shona
- Sindhi
- Sundanese
- Swahili
- Tajik
- Tamil
- Telugu
- Thai
- Ukrainian
- Urdu
- Uzbek
- Vietnamese
- Welsh
- Xhosa
- Yiddish
- Yoruba
- Zulu
- Kinyarwanda
- Tatar
- Oriya
- Turkmen
- Uyghur
Hex Bolts-Dacromet-dahaarka leh
2026-10-27
1. Hordhac
Laab kasta oo xiran waa dagaal ka dhan ah daxalka. Hex bolt ( hexagon head cap screw ) ayaa laga yaabaa inuu yahay xiraha ugu caansan aduunka, laakiin marka lagu rakibo buundada, munaaradda gudbinta, ama warshad kiimikaad, isla markiiba waxaa weerara qoyaan, ogsijiin, ions chloride, iyo sulfur dioxide. miridhku - marka hore miridhku cad (alaabooyinka oxidation zinc), ka dibna miridhku cas (iron oxide) - waxay ku gurguurtaa oogada xadhkaha, waxayna dhex gashaa dunta, oo aakhirka qabsata lawska, waxay daciifisaa culayska xajinta, waxayna burburisaa wadajirka.
Daahan Dacromet (sidoo kale loo yaqaan DACROMET, dahaadhka zinc-flake, ama dahaarka aan-electrolytic zinc-aluminium flake) ayaa loo sameeyay si sax ah si loogu guuleysto dagaalkan. Waxay ku siinaysaa boolal hex ah, biraha, iyo looska hex-ga la midka ah iyo dhaqida dhuuban, lebis, hub aan hydrogen lahayn oo ka badbaaday in ka badan 700 saacadood oo buufin milix dhexdhexaad ah (NSS) - dhowr jeer iska caabbinta daxalka ee electro-galvanizing isla dhumuc isku mid ah.
2. Aasaaska Xidhiidhiyaha: Hex Bolt oo ku jira Isku-xidh xidhan
Bolt hex wuxuu la shaqeeyaa lowska (ama dalool la taabtay) si uu isugu xiro laba ama in ka badan. Daacadnimada wadajirku waxay ku xiran tahay horudhac (Camp load) oo la soo bandhigay inta lagu guda jiro adkaynta, kaas oo ay maamusho codsatay durdur, dunta dunta, iyo isku xidhka khilaaf (μ) inta u dhaxaysa sagxadaha xajinta iyo dunta. Isku imaatin la xakameeyey torque-ga, injineeradu waxay u rogaan raritaanka horudhaca bartilmaameedka iyagoo isticmaalaya factor lowska (K ≈ 0.12-0.16 ee xirmooyinka dahaarka leh ee zinc-flake ee saliidaysan).
Qaybaha isku xidhka ee caadiga ah ee isku xidhka xidhan waxa ka mid ah:
- boolal hex / hex fur furkadunta buuxda (DIN 933 / ISO 4017) ama dun qayb ah (DIN 931 / ISO 4014), heerka hantida 8.8, 10.9, ama 12.9;
- Hex nuts- ISO 4032 lowska caadiga ah ama ISO 4033 dhuuban / looska, fasalka oo ku habboon boodhka;
- Mashiinnada fidsan(DIN 125) iyo guga dhaqida (DIN 127) - qaybi culayska xadhkaha oo ku dar caabbinta gariirka;
- Usha iyo ulaha dunta leh- isku xirka fidsan iyo shirarka dhex-xidhan;
- Flange nuts iyo boolal flange- oo leh flanges siddo isku dhafan oo loogu talagalay substrates jilicsan.
Mid kasta oo ka mid ah qaybahan waa in ay wadaagaan nidaamka ilaalinta daxalka; bolt Dacromet ah oo lagu lammaaniyay lowska zinc-plated ee cad wuxuu abuuraa a lamaane galvanic ah kaas oo marka hore u hura lawska.
3. Iska caabinta Daxalka: Dacromet vs. Bolt Kale wuu Dhamaaday
Adkeysiga buufinta milixda (ISO 9227 / ASTM B117, saacadood ilaa miridhku casaanka) waa halbeegga warshadaha ee ilaalinta daxalka.
| Dhamaystir / nidaamka daahan | Dhumucda | Saacadaha ilaa miridhku guduudan yahay (NSS) | miridhku cad (NSS) | Ebrittlement Hydrogen | Xusuusin |
| Bacaad ah (midab iska leh, saliid leh) | — | < 24 saac | — | Midna | Isticmaalka gudaha oo kaliya |
| Dahaarka Zinc, chromate buluug (Zn3) | 5 μm | ≈ 48 saac | 12-24 saac | Sare | Qiimo jaban, alaabooyinka la isticmaalo |
| Dahaarka Zinc, basbaas qaro weyn (Zn12) | 12 μm | ≈ 192 saac | 96-168 saacadood | Sare | Ma aha fasalka ≥ 10.9 |
| galvanization makaanik | 20-50 μm | 300-800 saacadood | 200-400 saacadood | Aad u hooseeya | U fiican qaybaha waaweyn |
| Galvanizing-kulul (HDG) | 45-85 μm | 500-1,500 saacadood | 200-500 saacadood | Hoose | Xargaha waxay u baahan yihiin dib u taabsi |
| Dacromet fasalka 2 | 8 μm | ≈ 720 saac | 300-500 saacadood | Midna | Sida loo gooyay saxnaanta dunta |
| Dacromet Class 3 / madow | 10-12 μm | ≈ 1,000 saac | 500-720 saacadood | Midna | Halbeegga OEM ee Automotive |
Dacromet sidoo kale waxay ka sareysaa dajinta zinc ee gudaha Imtixaanka Kesternich TS ISO 6988 daxalka - jawiga warshadaha iyo roobka aashitada baaritaanka daxalka meerto (CCT: buufin milix ah oo la isku daray / huurka / qalajinta), gudaha waafaqid galvanic leh substrates aluminium (mahadsanid waxa ku jira jajabka aluminium), gudaha baaskiil wadida heerkulka (filimka aan organic-ga ahayn wuxuu u adkeysanayaa adeega 120-300°C, halkaas oo dahaarka organic ay ka soo baxaan), iyo caabbinta kiimikada milixda waddooyinka iyo kiimikooyinka baraf-gooyada.
4. Gabagabo
Xirmooyinka hex iyo qalabkooda isku dhafka ah, daahan Dacromet wuxuu bixiyaa dheelitirka ugu wanaagsan ee ilaalinta daxalka, saxnaanta farsamada, iyo isku hallaynta kulanka maanta: adkaysiga buufinta milixda ilaa saacadaha 1,000, xasaanadda xajinta hydrogen, joomatari dunta la ilaaliyo, iyo khilaaf xasilloon oo loogu talagalay shirarka la xakameeyey. Meel kasta oo kala goysyada xiran ay tahay inay ka badbaadaan roobka, milixda, iyo waqtiga, qeexida in la xasuusto waa: Hex bolt-xoog-sare, zinc-flake (Dacromet) dahaarka leh, ISO 10683 / ASTM F1136 waafaqsan.
