- 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
- 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
- Somali
- 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
Dacromet Hex Socket Bolts: Advanced Anti-Corrosion Txheej Raws li Precision Fastening Tsim
2026-07-27 IB
Dacromet hex socket bolts sawv cev rau kev sib koom ua ke ntawm ob qhov tseem ceeb fastener technologies: Dacromet high-performance anti-corrosion txheej system thiab cylindrical socket-head (Allen) bolt geometry. Ua ke, lawv xa cov kev daws teeb meem uas tuaj yeem tiv taus cov cheeb tsam uas muaj corrosive heev thaum ua kom muaj kev txhim kho siab-torque, ua rau lawv tseem tsis tau muaj nyob rau hauv tsheb, marine, kev tsim kho, thiab kev siv tshuab hnyav thoob ntiaj teb.
1. Dacromet Txheej Technology
Dacromet yog cov khoom siv dej-raws li cov txheej txheem inorganic txheej thaum chiv thawj tsim rau cov pa roj carbon thiab stainless hlau fasteners. Tsis zoo li cov pa electroplated zinc, Dacromet ntiav cov txheej txheem tshuaj chromium-dawb (los yog tsawg-chromium) uas tsim cov txheej txheem nruj nruj ntawm cov zinc thiab txhuas flakes. Qhov tshwm sim yog qhov txawv ntawm cov nyiaj-grey tiav uas sib xyaw ua kom zoo nkauj nrog kev tiv thaiv tshwj xeeb.
Peb txheej ua haujlwm sib koom ua ke los muab kev tiv thaiv zoo:
Zinc-aluminium flake puag txheej - muab kev tiv thaiv kev txi (cathodic) kev tiv thaiv, corroding nyiam los tiv thaiv lub hauv paus steel substrate, thaum aluminium flakes ntxiv thaiv kev tiv thaiv.
Passivation mid-txheej txheej - ib qho inorganic chromate / silicate zaj duab xis uas kaw cov hlau flake qauv, tiv thaiv ntsev tsuag, tshuaj tua kab mob, thiab kub tshaj li cov pa zinc plating.
Sab saum toj organic foob lub tsho tiv no (yeem) - txhim kho torque-tiv thaiv kev ua tau zoo thiab tiv thaiv huab cua, thaum ua kom zoo ib yam nyiaj-grey zoo li nrog qis coefficient ntawm kev sib txhuam.
Table 1. Corrosion Resistance Comparison (Salt Spray Test, NSS)
| Txheej hom | Ntsej Tsuag Sijhawm | Thickness (hli) | Daim ntawv thov |
| Dacromet | ≥ 1,000 - 3,000 | 6–10 | Marine / tsheb |
| Ruspert | ≥ 1,000 - 3,000 | 3–5 | Sab nraum zoov / marine |
| Zn-Ni alloy plating | ≥ 720-1,000 | 8–12 | Automotive |
| Raws li kev cai Zn plating | 96-240 : kuv | 5–8 | Sab hauv / dav |
2. Hex Socket Bolts
Hex socket bolts, tseem hu ua lub qhov (socket head cap screws) lossis Allen bolts, muaj lub taub hau cylindrical nrog rau sab hauv hexagonal tsav. Qhov geometry no tso cai rau kev sib kis ntau dua nrog lub taub hau me dua piv rau sab nraud hex bolts, ua rau lawv zoo tagnrho rau cov ntawv thov uas txwv tsis pub tshem tawm lossis qhov twg yuav tsum tau yaug, huv si.
Cov yam ntxwv tseem ceeb ntawm kev tsim muaj xws li:
Lub taub hau cylindrical nrog sab hauv hex tsav - lees txais tus qauv hex yuam sij rau kev teeb tsa siab nrog lub taub hau me me; Qhov ntau thiab tsawg tsav ua raws li ISO 2936 lossis ASME B18.3.
Tag nrho los yog ib nrab threading - tag nrho cov xov variants faib cov khoom sib npaug raws li qhov ntev; ib nrab-xov variants muab lub zog unthreaded shank rau shear daim ntaub ntawv.
High-strength alloy steel (8.8 / 10.9 / 12.9) - cov qib kho cua sov ua kom lub zog tensile mus txog 1,220 MPa, haum rau dynamic loads thiab cov pob qij txha tseem ceeb.
Dacromet nto tiav - muab ≥ 1,000 xuab moos ntawm kev tiv thaiv ntsev-txhaj yam tsis muaj hydrogen embrittlement, ua rau nws zoo tagnrho rau cov khoom siv muaj zog uas tsis muaj electroplating.
Table 2. Common Dacromet Hex Socket Bolt Specifications (Property Class 8.8)
| Loj | Xov Dia. (mm) | Lub taub hau qhov siab (mm) | Min. Tensile (MPa) | Daim ntawv thov |
| M4 | 4 | 4 | 800 | Electronics / instruments |
| M5 | 5 | 5 | 800 | Lub teeb sib dhos |
| M6 | 6 | 6 | 800 | Rooj tog / machinery |
| M8 | 8 | 8 | 800 | Mechanical / automotive |
| M10 | 10 | 10 | 830 | Cov pob qij txha |
| M12 | 12 | 12 | 830 | Lub tshuab hnyav |
3. Cov ntsiab lus
Dacromet hex socket bolts muab cov kev tiv thaiv zoo tshaj plaws ntawm Dacromet inorganic txheej txheej txheej (ua tiav 1,000-3,000 teev ntawm kev tiv thaiv ntsev tsuag yam tsis muaj hydrogen embrittlement) nrog lub siab-torque, qis-profile tsim ntawm hex socket bolt. Qhov kev sib koom ua ke no ua rau muaj kev txhim khu kev ruaj ntseg hauv qhov xav tau ib puag ncig - los ntawm chassis thiab nres tshuab rau cov qauv hauv hiav txwv thiab cov khoom siv sab nraum zoov - thaum khaws cia qhov tseeb torque tswj thiab kav ntev. Raws li kev lag luam xav tau cov fasteners uas sib npaug ntawm kev ua tau zoo, kev nyab xeeb, thiab kev ua haujlwm ntev, Dacromet hex socket bolts tau dhau los ua qhov kev xaiv zoo tshaj plaws rau cov engineers thiab OEMs thoob ntiaj teb.
