I-Dacromet coated hexagonal cylindrical head screw: Ibholithi encinci imisela ubomi bezixhobo ezinkulu, i-anti-corrosion kunye ne-corrosion-resistant, kwaye akukho ngozi efihliweyo ye-hydrogen embrittlement.

2026-11-04

1. Intshayelelo: IBolt Ebamba Oomatshini Ndawonye

Hamba kuyo nayiphi na ivenkile yoomatshini, iseli yerobhothi, okanye i-wind-iturbine nacelle kwaye uya kufumana isiqhoboshiso esifanayo: isikrufu sentloko-cylindrical esinendawo yokuphuma enehexagonal, siqiniswe ngesitshixo sika-Allen. Le yile ihexagon socket head cap screw, esemgangathweni njenge-DIN 912 kunye ne-ISO 4762. Yibholithi engagqibekanga ye-die molds, izixhobo zoomatshini, i-hydraulic manifolds, kunye neendibano ezichanekileyo, kuba igxininisa umthwalo ophezulu we-clamp kwimvulophu edibeneyo kwaye inokubuyiselwa kwi-counterbore.

2. Inkcazo yeMveliso: I-Hexagon Socket Head Cap Screw

Ijometri yale bholiti yenzelwe ukulayishwa kwangaphambili, hayi inkangeleko egungxulwayo:

Intloko yeCylindricalngobuso obunobuso obuthe tyaba obusasaza umthwalo obambeleyo kwindawo esetyhula epheleleyo.
Isokethi yehexagon yangaphakathi(i-metric ngaphesheya kweeflethi ukusuka kwi-2.5 mm ukuya kwi-36 mm), ihambisa i-torque ebusweni obuthandathu kunye ne-cam-out encinci.
Uluhlu olupheleleyo lwemetric(ilizwi elirhabaxa okanye elicolekileyo ngokwe-ISO 261), iqengqeleke endaweni yokusikwa ukuze kuqhubeke ukuhamba okuziinkozo kunye nobomi obungcono bokudinwa.
Iiklasi zePropati 8.8, 10.9, kunye ne-12.9, egubungela amandla okuqina ukusuka kwi-800 ukuya kwi-1,220 MPa.

Umsonto	Intloko yeDiya. (dk)	Umphakamo weNtloko (k)	I-Hex Socket (s)	Class 8.8 Tensile	Class 12.9 Tensile	Ubude obuqhelekileyo
M5	8.5 mm	5.0 mm	4 mm	800 MPa	1,220 MPa	10-60 mm
M6	10.0 mm	6.0 mm	5 mm	800 MPa	1,220 MPa	12–80 mm
M8	13.0 mm	8.0 mm	6 mm	800 MPa	1,220 MPa	16-100 mm
M10	16.0 mm	10.0 mm	8 mm	800 MPa	1,220 MPa	20-120 mm
M12	18.0 mm	12.0 mm	10 mm	800 MPa	1,220 MPa	25-150 mm
M16	24.0 mm	16.0 mm	14 mm	800 MPa	1,220 MPa	30-200 mm

I-head-to-thread ratio ibalulekile kuyilo lwe-corrosion: intloko enkulu ye-cylindrical inika i-coating indawo ebanzi, ephantsi yoxinzelelo kwi-bond, ngelixa i-socket recess enzulu yeyona ndawo ibaluleke kakhulu kwi-screw yonke - kulapho umhlwa uqala ukuhlasela kwaye apho ifilimu encinci okanye engaphelelanga ibangela ukuba i-bolt ibambe.

Dacromet coated hexagonal cylindrical intloko screw

3. Ukufakela: iTorque, ukuLayishwa kwangaphambili, kunye neNdibaniselwano yeCoating

Ibholithi ekwaziyo ukumelana nomhlwa ayinaxabiso ukuba ilungu liyaxega. Itheyibhile 2 inika i-torque ye-assembly kwiklasi ye-8.8 kunye ne-10.9 ye-socket head cap izikrufu ezine-Dacromet coating (μ ≈ 0.14).

Umsonto	Iklasi ye-8.8 Torque	Iklasi 8.8 Ukulayisha kwangaphambili	Iklasi ye-10.9 Torque	Iklasi 10.9 Ukulayisha kwangaphambili
M5	6.5 Nm	4.0 kN	9.0 N·m	5.6 kN
M6	11.5 Nm	5.7 kN	16.0 N·m	8.0 kN
M8	28.0 N·m	10.4 kN	39.0 N·m	14.6 kN
M10	55.0 N·m	16.5 kN	78.0 Nm	23.1 kN
M12	96.0 N·m	24.0 kN	135 Nm	33.6 kN
M16	240 N·m	45.0 kN	335 Nm	63.0 kN

Sebenzisa iqhosha elichanekileyo.Isitshixo se-Allen esigugileyo okanye esingaphantsi sokonakalisa isokethi kwaye siveze intsimbi engenanto - eyona ndawo iqalayo ukuthotywa.
Hlonipha i-counterbore.Izihlalo zentloko ebusweni bayo obugcweleyo; i-counterbore ene-chamfered okanye eyonakalisiweyo inciphisa indawo yoqhagamshelwano kwaye inokukrazula ifilimu yokugubungela phantsi komthwalo.
Musa ukuxuba iinkqubo zokugqumakwindawo enye ngaphandle kokujonga kwakhona i-torque. I-Dacromet screw kwi nut engenanto ine-friction eyahlukileyo kune-screw egqunywe kwi-nut egqunyiweyo.
Re-torque emva kokuhlaliswakwiigaskithi ezithambileyo okanye kwizindlu zeplastiki; ifilimu eyomileyo ayifuni, kodwa into edibeneyo inokuthi.

4. Ukuqukumbela

I-Dacromet-coated hexagon socket head cap screw licandelo elincinci elithatha isigqibo ngobomi benkonzo yendibano enkulu. Intloko yecylindrical kunye nehexagon yangaphakathi ihambisa umthwalo obambekayo kwiimfuno zoomatshini bale mihla; i-zinc-aluminiyam yeflake yokwaleka inikezela ukusebenza okuchasene nokudumba okufunwa ngaphandle, elwandle, kunye nenkonzo yothutho - ngaphandle kwe-hydrogen embrittlement, ngaphandle kokucofa intambo kwakhona, kwaye ngaphandle kwesohlwayo sentsimbi yentsimbi. Cacisa ulwakhiwo ngokuchanekileyo, itorque ngokuchanekileyo, kwaye ibholithi iya kudlula ipeyinti kumatshini ewubambe kunye.

Andinayo. Okulandelayo.

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