IBakala 8.8 iDacromet Hex Bolt –IN 933 | ISO 4014 | IBolt yeHexagon enemisonto egcweleyo eneDacromet Anti-Corrosion Coating

2026-07-06

IBanga le-8.8 Dacromet DIN 933 hex bolt idibanisa amandla omatshini aphakathi aphezulu kunye nokukhusela ukugqwala okukhokelela kwishishini. Yamkelwa ngokubanzi kulwakhiwo lwentsimbi yangaphandle, amandla omoya, iziseko zikaloliwe, kunye nokwakhiwa kwebhulorho, le fastener inikezela ukusebenza okuthembekileyo kokucinezela phantsi kweemeko zokusingqongileyo ezibangwayo - ngaphandle komngcipheko we-hydrogen embrittlement ehambelana nezinye iindlela ze-electroplated.

IBanga le-8.8 DIN 933 Hex Bolt kunye neDacromet yeSilivere-Grey Coating

Icandelo 1 - Ukuqonda iBanga lesi-8.8

Ngokutsho kwe-ISO 898-1, ukuchongwa kweklasi yepropathi yebholithi inamanani amabini ahlulwe ngendawo yesishumi. KwiBanga lesi-8.8:

Inombolo yokuqala (8): Ibonisa i-1/100 yamandla e-tensile ye-nominal kwi-MPa - oko kukuthi, amandla amancinci amancinci = 800 MPa.

Umvo wesibini (8): Ibonisa umlinganiselo wamandla esivuno esincinci ukuya kumandla obunzima obuncinane × 10 — oko kukuthi, umlinganiselo wesivuno = 0.80, oku kuthetha ukuba ubuncinci bamandla esivuno = 640 MPa.

Iipropati zoomatshini

Ipropati	Ixabiso	Umgangatho	Indlela yoVavanyo
Amandla Okuqina (imiz.)	800 MPa	ISO 898-1	Uvavanyo lwe-tensile
Ukomelela Kwezivuno (imiz.)	640 MPa	ISO 898-1	Uvavanyo lwe-tensile
Ubungqina bomthwalo woxinzelelo	580 MPa	ISO 898-1	Umthwalo wobungqina
Umlinganiselo wesivuno	0.80	ISO 898-1	Ukubala
Ukuqina (Vickers)	245–335 HV	ISO 6507	Uvavanyo lweVickers
Ukuqina (Rockwell)	22–32 HRC	ISO 6508	Uvavanyo lweRockwell
Ukwandiswa ngexesha lekhefu (imiz.)	12%	ISO 898-1	Uvavanyo lwe-tensile
Ukuqina kwempembelelo (imiz.)	52 J @ -20 °C	ISO 898-1	Uvavanyo lwe-Charpy

Iifasteners zeBakala 8.8 zenziwa kwi-medium-carbon steel (umzekelo, 45 # / SAE 1045) okanye i-alloy-alloy steel (umzekelo, i-40Cr / SCM435) kwaye iphantsi kokucima kunye nokushisa (Q & T) unyango lokufudumala ukuze kufezekiswe iprofayili yamandla afunekayo. Indibaniselwano yamandla obunzima obuphezulu kunye nomlinganiselo olawulwayo wesivuno wenza iibholithi zeBanga lesi-8.8 zithembeke kakhulu kuqhagamshelo lwezakhiwo olulayishwe kwangaphambili.

Imimandla yeSicelo eqhelekileyo

Ulwakhiwo lwentsimbi: I-bolting yesakhiwo kwizakhelo, imiqadi, iitrasi (BS EN 14399 / ASTM A325-elingana).

Iziseko zophuhliso: Ukuhonjiswa kwebhulorho, iintsimbi zecrane, iitrayile zoonogada bendlela, ulwandiso lwamalungu.

Amandla ahlaziyekayo: Uqhagamshelo lwesiseko senqaba ye-injini yomoya, izakhiwo zokuxhoma ngelanga.

Oomatshini: Izakhelo zoomatshini benjongo ngokubanzi, izixhobo zolimo, ukuphatha imathiriyeli.

Iimoto (ezingabalulekanga): Ukunyuswa kwe-chassis, umzimba ukuya kwifreyimu, i-injini yokuxhasa i-cradle.

Icandelo 2 - DIN 933 Hex Bolt Standard

I-DIN 933 (i-Deutsches Institut für Normung, i-German Standards Institute) ichaza i-dimensional ne-geometric iimfuno zeebholiti ezithululwe ngokupheleleyo ezinehexagon ezinemisonto erhabaxa yemetric. Nangona ithathelwe indawo ubukhulu becala yi-ISO 4017 kwinqanaba lamazwe ngamazwe, i-DIN 933 iseyeyona nto iphambili ekuthengeni imveliso yaseYurophu nakwihlabathi jikelele.

Iimpawu eziphambili zeDIN 933

Umsonto opheleleyo: Ibholithi ithungelwe ecaleni kwayo yonke i-shank ubude - ukukhulisa ukubandakanyeka komsonto kunye nokuhanjiswa komthwalo.

Intloko enehexagonal: Ububanzi obuqhelekileyo-kwiiflethi zobukhulu buvumela ukusetyenziswa kunye nezipaneli zemetric ezisemgangathweni kunye nezitshixo zesokethi.

Isandi somsonto orhabaxa: I-Metric coarse pitch (nge-ISO 261 nganye) yokuhlanganisa ngokukhawuleza kunye nokuxhathisa ukukhulula phantsi kokungcangcazela.

Ukunyamezela imilinganiselo: Ibanga lemveliso A (m ≤ 10d okanye ≤ 150 mm) kunye nebakala lemveliso B (ubukhulu obukhulu) nge-ISO 4759-1.

DIN 933 Dimension Reference Table

I-DIN 933 i-Hex Bolt — IiParamitha eziPhambili eziPhambili (s = ububanzi kwiiflethi, k = ubude bentloko)

Ukuchongwa kokuMakisha

Iibholithi ze-DIN 933 zeBakala 8.8 ziphawulwa ngentloko ngesimboli yepropathi ethi "8.8" kunye namanqaku okuzazisa umenzi. Xa i-Dacromet-coated, uphawu olongezelelweyo okanye ithegi ingabonisa unyango olungaphezulu.

Icandelo 3 - uKhuseleko lwe-Dacromet Corrosion

I-Dacromet (ekwabhalwa njenge-Dacrotised okanye i-DACROMET®) yi-chromate-free, i-zinc-and-aluminium flake-based based technology-coating technology eyakhiwe yi-Diamond Shamrock Chemicals. Ibonelela ngokhuseleko lokutya okubalaseleyo kwaye iye yaba lolona nyango lukhethwayo lomphezulu kwiibholithi zeBakala 8.8 ezisetyenziswa kwizicelo zangaphandle nakwindalo ehlaselayo.

Isebenza njani iDacromet

Ukwaleka kubandakanya i-zinc ephinda-phindaneyo kunye neeflakes ze-aluminiyam ezidityaniswe kunye yi-inorganic chromate-based binder matrix, esetyenziswa ngokusonta idiphu kwaye yanyangwa malunga ne-300 °C. I-microstructure elayishiweyo idala indlela eyingozi kwi-arhente ezonakalisayo, inikezela zombini umqobo kunye nokhuseleko lwedini (galvanic):

Ukhuseleko lomqobo: I-Dense, i-flake layers etyhutyhayo ithintela ngokwasemzimbeni ukufuma kunye nee-ion ze-chloride ekufikeleleni kwi-substrate yentsimbi.

Ukhuseleko lwedini (galvanic): I-zinc flakes i-electrochemically ingaphantsi kunentsimbi; zidla ngokukhethayo, zikhusela imiphetho yentsimbi eveziweyo kwiindawo ezisikiweyo kunye neendawo ezonakeleyo.

Isiphumo sokuziphilisa: Iimveliso ze-zinc corrosion zitywina ngokuyinxenye iziphene zokwaleka ezincinci, zandisa ubomi bokhuseleko.

Iinkcukacha Zokusebenza eziphambili

Ipropati	Dacromet	Hot-Dip Galvanizing	I-Zinc Electroplating	I-Phosphating
Ukunyangwa kweSitshizi seTyuwa	≥ 480 h (inokufikelela ku-1000+ h)	200–500 h	96–120 h	< 72 h
Ukutyeba kokutyabeka	6–10 µm	50–100 µm	5–15 µm	5–15 µm
I-Hydrogen Embrittlement	Akukho (ukubhaka akufuneki)	Akukho nanye	Umngcipheko ophezulu	Umngcipheko ophantsi
Ukunyamezela imisonto	Ayichaphazelekanga (idyasi encinci)	Idla ngokuchaphazeleka	Kulungile	Kulungile
I-RoHS / REACH iyahambelana	Ewe (hexavalent-Cr-free)	Ewe	Iyahluka	Ewe
Usetyenziso oluqhelekileyos	Isakhiwo sangaphandle, inqaba yomoya, ibhulorho	Inzima ngaphandle	Ngaphakathi/ukukhanya	Ngaphakathi

Uvavanyo lwesitshizi setyuwa ngokwe-ISO 9227. Ubukhulu beDacromet eqhelekileyo: 6–10 µm. Iziphumo zinokwahluka kuqulunqo oluthile kunye nendlela yokusetyenziswa.

ImiGangatho eSebenzayo kunye neNgcaciso

ISO 10683: Iingubo ze-zinc flake ezingasetyenziswanga ngombane kwi-fasteners.

I-DIN EN ISO 10683: Ukwamkelwa kwe-ISO 10683 yaseYurophu.

I-ASTM F1136: I-Zinc / i-aluminium yokukhusela i-corrosion-protective coatings for fasteners.

VDA 235-104: Umgangatho weemoto waseJamani wokwaleka i-zinc flake.

Malunga neFujirui Metal — uMenzi weFastener oyiNgcali kunye noMthumeli ngaphandle

I-Fujirui Metal yenza kwaye ithumele kumazwe angaphandle iziqhoboshi ezichanekileyo ezibandakanya iBanga lesi-8.8 / 10.9 / 12.9 iibholiti zeheksi, iibholithi ze-DIN 933 zomsonto ogcweleyo, iibholithi ze-DIN 931 ezingagqibelelanga, iibholiti ze-stud, kunye nezibophelelo zesiko. Iinketho zonyango ezingaphezulu ziquka i-Dacromet, i-Ruspert, i-hot-dip galvanising, kunye ne-zinc electroplating. Zonke iimveliso zenziwa ngokwemigangatho ye-ISO, DIN, kunye ne-ASTM enezatifikethi zovavanyo olupheleleyo (MTC).

Andinayo. Okulandelayo.

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