I-Dacromet-Coated Hexagon Socket Countersunk Head Bolts

2026-11-02

I-Dacromet-coated hexagon socket countersunk head bolt idibanisa i-flush-fitting countersunk screw kunye ne-zinc-aluminium flake coating ehambisa iiyure ezingama-720-1,000 zokumelana nokutshizwa kwetyuwa - amaxesha amaninzi ubude kuneebholiti ze-zinc eziqhelekileyo ze-electro-plated. Eli nqaku licacisa ijiyometri yebholiti, inkqubo yokwambathisa yeDacromet, indlela yayo yokuchasana nomhlwa, kunye nendlela ethelekisa ngayo nolunye unyango lobungqina bomhlwa kwizikrufu kunye neebholiti.

1. Intshayelelo: Kutheni i-Corrosion Protection ibalulekile kwiiBolts kunye nezikrufu

Iifasteners - iibholiti, izikrufu, amantongomane, kunye newashers - zezona zixhobo zisengozini yokubola kuyo nayiphi na ibholiti edibeneyo. Ibholithi erulileyo iphulukana nokulayishwa kwangaphambili, ibambe umngxuma wayo othungelweyo, kwaye ekugqibeleni ibeke esichengeni isidima sesakhiwo sendibano iphela. Kwiindawo ezihlala elwandle, iibhulorho zohola wendlela, izinto zokuxhoma ngelanga, kunye noomatshini bangaphandle, izikrufu eziqhelekileyo ezifakwe nge-zinc zinokubonisa umhlwa omhlophe kwiiveki kunye nomhlwa obomvu kwiinyanga nje.

2. IGeometry yeMveliso: I-Hexagon Socket Countersunk Head Bolt

Ubungakanani bomsonto	Ububanzi bentloko (dk)	Umphakamo weNtloko (k)	I-Hex Socket (s)	IKlasi yaMandla okuqina	Ubude obuqhelekileyo
M5 × 0.8	10.0 mm	2.8 mm	4 mm	8.8 / 10.9	10-60 mm
M6 × 1.0	11.4 mm	3.3 mm	5 mm	8.8 / 10.9	12–80 mm
M8 × 1.25	15.0 mm	4.4 mm	6 mm	8.8 / 10.9	16-100 mm
M10 × 1.5	18.5 mm	5.4 mm	8 mm	8.8 / 10.9	20-120 mm
M12 × 1,75	21.5 mm	6.5 mm	10 mm	8.8 / 10.9	25-150 mm

Iinzuzo eziphambili zejometri zolu hlobo lwesijija:

I-Dacromet-Coated Hexagon Socket Countersunk Head Bolts

Umphezulu ogungxulwayo- intloko ye-countersunk ayifuni, ikhuphe amanqaku e-snag kwaye ivumele iindawo zokukhwelana ukuba zihlale phantsi.
Umthamo wetorque ephezulu- i-hexagon socket idibanisa ubuso obuthandathu, ihambisa i-30-50% ye-torque ngaphezulu kune-slotted okanye i-Phillips drive ngaphambi kokuhluthwa.
Uthethathethwano ngomsonto- iintambo zomatshini ezipheleleyo (okanye i-self-tapping threads kwi-sheet-metal applications) zibonelela nge-axial clamping eqinile ye-joint bolted.

3. I-Dacromet Coating: Indlela Esebenza ngayo

I-Dacromet ligama eliphawulweyo eliye laba ligama leshishini elenziwe lafana nelo i-zinc-aluminiyam i-flake yokugqoka ifakwe ngediphu-spin okanye isitshizi kwaye yanyangwa malunga ne-300 °C. Ngokungafaniyo ne-electroplating, inkqubo ayinayo i-electrolytic, ngoko i-coating ingenisa i-hydrogen embrittlement - into ebalulekileyo yokhuseleko kwiibholiti eziphezulu zebanga le-10.9 nangaphezulu.

Ukwaleka yimatrix esilivere-ngwevu yezinki ethe kratya kunye neeflakes zealuminiyam (ngokuqhelekileyo yi-0.1–0.5 µm ubukhulu, 15–20 µm iyonke) edityaniswe yi-inorganic chromium ikhompawundi isibophelelo. Isixhobo sayo sokuchasa ukubola siphindwe kathathu:

4. Ukusebenza kwe-Anti-Corrosion: Idatha yokutshiza ityuwa

Uvavanyo lokujonga i-fastener rust luvavanyo olungathathi hlangothi lwetyuwa yokutshiza (NSS) ngokwe-ISO 9227 / ASTM B117. Itheyibhile yesi-3 ithelekisa izikrufu ezigqunywe yi-Dacromet kunye nonyango olulolunye oluqhelekileyo lomphezulu.

Itheyibhile 3-Uthelekiso lokunganyangeki (uvavanyo lwe-NSS, iiyure ukuya kumhlwa obomvu wokuqala)

Unyango loMphezulu	Ubutyebe obuqhelekileyo	Umhlwa omhlophe	Umhlwa obomvu	I-Hydrogen Embrittlement Risk	Isalathiso seendleko
Ukucwenga kwe-zinc ecacileyo (Zn)	5–8µm	24–96 h	150–300 h	Phakathi	1.0
Ukubekwa kwezinc emthubi (Zn-Cr)	5–8µm	96–200 h	300–500 h	Phakathi	1.2
I-Hot-dip galvanizing (HDG)	50–100 µm	—	1,000–2,000 h	Phantsi	1.5
I-Dacromet (idyasi enye)	5–8µm	480–720 h	720–1,000 h	Akukho nanye	1.8
I-Dacromet (iidyasi ezi-2-3)	10–24µm	1,000+ h	1,500–2,500 h	Akukho nanye	2.2
I-Dacromet + phezulu-seal	10–24µm	1,200+ h	2,000–3,000 h	Akukho nanye	2.5

5. Ukuqukumbela

I-Dacromet-coated hexagon socket countersunk head bolt isombulula iingxaki ezimbini ezindala kwi-threaded fastening - i-rust kunye ne-protrusion - kwicandelo elinye. I-countersunk geometry inika i-flush, ecocekileyo, i-snag-free joint kunye ne-torque ephezulu ye-hexagon drive, ngelixa i-zinc-aluminiyam i-flake i-coating inika ukhuseleko lwe-anti-corrosion yombingelelo kunye nomqobo ohlala iiyure ze-1,000 okanye ngaphezulu kuvavanyo lwe-salt-spray, ngaphandle kwe-hydrogen embrittlement. Kwiinjineli kunye nabathengi abachaza izikrufu kunye neebholithi zangaphandle, zaselwandle, okanye imeko yezothutho, olu didi lwe-fastener lubonelela ngowona mlinganiselo ubalaseleyo wokhuseleko lokutya kunye neendleko ezikhoyo kubuchwephesha bale mihla bolting.

Ngaphambili. Okulandelayo.

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