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Fasalka 8.8 Dacromet Hex Bolt –IN 933 | ISO 4014 | Xarig-buuxa Hexagon Bolt oo leh Dacromet Ka-hortagga Daxalka
2026-07-06
Fasalka 8.8 Dacromet DIN 933 hex bolt wuxuu isku daraa awood farsamo oo dhexdhexaad ah iyo ilaalinta daxalka ee hormuudka ka ah warshadaha. Si balaadhan loogu ansixiyay shaqada dhismaha bannaanka ee birta, tamarta dabaysha, kaabayaasha tareenada, iyo dhismaha buundada, xidhxidhahani waxa uu keenaa wax qabad isku xidhitaan la isku halayn karo iyada oo la raacayo xaaladaha deegaanka ee u baahan - iyada oo aanay jirin khatarta qallafsanaanta hydrogen ee la xidhiidha beddelka korantada.
Qaybta 1 - Fahamka Fasalka 8.8
Marka loo eego ISO 898-1, qeexitaanka heerka hantida ee bolt wuxuu ka kooban yahay laba lambar oo ay u kala baxaan jajab tobanle. Fasalka 8.8:
Lambarka koowaad (8): Waxay tusinaysaa 1/100 ee xoogga jilicsanaanta magaca ah ee MPa - ie, xoogga ugu yar ee jilicsan = 800 MPa.
Nambarka labaad (8): Waxay tuseysaa saamiga ugu yar ee xoogga wax-soo-saarka ilaa ugu yar xoogga xajinta × 10 - tusaale ahaan, saamiga wax-soo-saarka = 0.80, taasoo la macno ah ugu yaraan awoodda wax-soo-saarka = 640 MPa.
Guryaha Makaanikada
| Hanti | Qiimaha | Heerka | Habka Imtixaanka |
| Xoogga Jilitaanka (min.) | 800 MPa | ISO 898-1 | Tijaabada xamaasadda |
| Xoogga Wax-soosaarka (daq.) | 640 MPa | ISO 898-1 | Tijaabada xamaasadda |
| Caddaynta Cadaadiska Culayska | 580 MPa | ISO 898-1 | Culayska caddaynta |
| Saamiga Waxsoosaarka | 0.80 | ISO 898-1 | Xisaabinta |
| Adag (Vickers) | 245-335 HV | ISO 6507 | Imtixaanka Vickers |
| Hardness (Rockwell) | 22-32 HRC | ISO 6508 | Tijaabada Rockwell |
| Kordhinta wakhtiga nasashada (daq.) | 12% | ISO 898-1 | Tijaabada xamaasadda |
| Adkaynta Saamaynta (daq.) | 52 J @ -20 °C | ISO 898-1 | Tijaabada Charpy |
Xidhiidhiyayaasha fasalka 8.8 waxaa laga soo saaray birta karbon dhexdhexaadka ah (tusaale, 45# / SAE 1045) ama birta daawaha hoose (tusaale, 40Cr / SCM435) waxaana lagu daaweeyaa deminta iyo xanaaqa (Q&T) daawaynta kulaylka si loo gaaro astaanta xoogga loo baahan yahay. Isku-darka xoogga cufan ee sarreeya iyo saamiga wax-soosaarka la kantaroolay wuxuu ka dhigayaa Fasalka 8.8 boolal si heer sare ah loogu kalsoonaan karo isku xirka qaabdhismeedka horay loo raray.
Goobaha Codsiga ee Caadiga ah
Dhismaha birta: Daboolista qaab dhismeedka fiimyada, alwaaxyada, saqafka (BS EN 14399 / ASTM A325-u dhiganta).
Kaabayaasha dhaqaalaha: Sagxadda buundada, biraha wiishka, biraha ilaaliya waddooyinka, kala goysyada ballaarinta.
Tamar la cusboonaysiin karo: Isku xirka saldhigga marawaxadaha dabaysha, qaababka korka qorraxda.
Mashiinnada: Mashiinnada ujeeddooyinka guud, qalabka beeraha, maaraynta alaabta.
Baabuur (aan muhiim ahayn): Kordhinta chassis, jidh-ilaa-frame, taageerooyinka sariirta injiinka.
Qeybta 2 - DIN 933 Hex Bolt Standard
DIN 933 (Deutsches Institut für Normung, Machadka Heerarka Jarmalka) wuxuu qeexayaa cabbirka iyo shuruudaha joomatari ee boolal hexagon ah oo si buuxda u dunsan oo leh dunta mitiriga ah ee aan qummanayn. In kasta oo inta badan lagu beddelay ISO 4017 heer caalami, DIN 933 ayaa weli ah qeexitaanka ugu sarreeya ee soo iibsiga warshadaha Yurub iyo adduunka.
Astaamaha ugu muhiimsan ee DIN 933
Duub buuxa: Boodhka waxa lagu xidhaa dhererkiisa shank oo dhan - kordhinta hawlgelinta dunta iyo qaybinta culayska.
Madaxa laba geesoodka ah: Cabbirka ballaca-gud ee dabaqyada caadiga ah waxa uu ogolaanayaa isticmaalka mitirka caadiga ah iyo furayaasha godka.
Dhererka dunta qallafsan: Dhererka cabbirka mitirka ah (sida ISO 261) ee loogu talagalay isu imaatinka degdegga ah iyo iska caabinta dabcinta gariirka.
Dulqaadka cabbirka: Heerka badeecada A (m ≤ 10d ama ≤ 150 mm) iyo darajada badeecada B (xajmiyada waaweyn) marka loo eego ISO 4759-1.
DIN 933 Shaxda Tixraaca Cabirka
Calaamadaynta Aqoonsiga
DIN 933 Fasalka 8.8 boolal waxaa lagu calaamadeeyay astaanta fasalka hantida "8.8" iyo calaamadda aqoonsiga soo saaraha. Marka Dacromet-dahaarka leh, calaamad dheeraad ah ama sumad ayaa laga yaabaa inay muujiso daaweynta dusha sare.
Qaybta 3 - Ilaalinta Dacromet ee Dacromet
Dacromet (sidoo kale loo qoro Dacrotised ama DACROMET®) waa teknooloojiyada dahaarka biyaha ka qaada ee ku salaysan chromate-free, zinc-iyo-aluminium oo asal ahaan ay samaysay Diamond Shamrock Chemicals. Waxay bixisaa ilaalinta daxalka allabari ee aad u wanaagsan waxayna noqotay daawaynta dusha sare ee la door biday ee Fasalka 8.8 boolal ee loo isticmaalo codsiyada deegaanka bannaanka iyo gardarrada.
Sida Dacromet u shaqeyso
Dahaarku waxa uu ka kooban yahay dhawr jajab oo isku xidhan oo zinc iyo aluminium ah oo ay isku xidhxidhan yihiin matrix-ka-xidhaha aan noolaha ahayn ee chromate-ku-salaysan, kaas oo lagu dabaqay-spining oo lagu daaweeyay ku dhawaad 300 °C. Qaab-dhismeedka yar yar ee lakabka ah wuxuu u abuuraa waddo qallafsan oo loogu talagalay wakiilada daxalka, taasoo bixisa xayndaab iyo ilaalin (galvanic) labadaba:
Ilaalinta caqabadaha: Cufan, lakabyo jajab ah oo is dulsaaran ayaa jir ahaan ka xannibaya qoyaanka iyo ion koloriin inay gaaraan substrate-ka birta.
Ilaalinta (galvanic): Jeexjeexyada Zinc-ku waxay korantada kiimikaad ahaan ka sharaf yar yihiin birta; Waxay si gaar ah u daxalaystaan, iyagoo ilaalinaya cidhifyada birta ee bannaan ee meelaha la jaray iyo meelaha dhaawacan.
Saamaynta is-bogsiinta: Alaabooyinka daxalka Zinc waxay qayb ahaan daboolaan cilladaha dahaarka yar yar, iyagoo kordhinaya nolosha ilaalinta.
Xogta Waxqabadka Muhiimka ah
| Hanti | Dacromet | Galvanizing Kulul-Dip | Zinc Electroplating | Fosfatinta |
| Iska caabinta milixda | ≥ 480 saac (waxay gaari kartaa 1000+ saac) | 200-500 saacadood | 96-120 saacadood | <72 saac |
| Dhumucda dahaarka | 6–10 µm | 50-100 µm | 5-15 µm | 5-15 µm |
| Embrittlement Hydrogen | Midna (dubista looma baahna) | Midna | Khatar sare | Khatar yar |
| Dulqaadashada dunta | Aan la taaban (jaakad khafiif ah) | Badanaa saameeya | Guud ahaan OK | Guud ahaan OK |
| RoHS / REACH waafaqsan | Haa (hexavalent-Cr-free) | Haa | Kala duwan | Haa |
| Codsiga caadiga ahs | Dhismaha bannaanka, munaaradda dabaysha, buundada | Banaanka culus | Gudaha/Iftiin | Gudaha |
Tijaabada buufinta milixda ee ISO 9227. Dhumucda Dacromet ee caadiga ah: 6-10 µm. Natiijadu waxay ku kala duwanaan kartaa qaabaynta gaarka ah iyo habka codsiga.
Heerarka & Tilmaamaha lagu dabaqi karo
ISO 10683: Dahaarka zinc flake ee aan elektarooniga ahayn ayaa lagu dabaqay xirayaasha.
DIN EN ISO 10683: Abuuritaanka Yurub ee ISO 10683.
ASTM F1136: Zinc/aluminium dahaarka ilaalinta daxalka ee xirayaasha
VDA 235-104: Heerarka baabuurta Jarmalka ee dahaarka flake zinc.
Ku saabsan Fujirui Metal - Soo-saare Xirfadle Sare & Soo dhoofiye
Fujirui Metal waxay soo saartaa oo dhoofisaa xirmooyinka saxda ah oo ay ku jiraan Fasalka 8.8 / 10.9 / 12.9 hex bolts, DIN 933 bolts-ka buuxa, DIN 931 bolts-thread qayb ahaan, boolal istuud, iyo xirxirayaal caado ah. Ikhtiyaarada daawaynta dusha sare waxaa ka mid ah Dacromet, Ruspert, galvanising kulul, iyo zinc electroplating. Dhammaan alaabooyinka waxaa loo soo saaray ISO, DIN, iyo ASTM oo wata shahaadooyin tijaabo ah oo buuxa (MTC).
