I-Dacromet-Coated Hexagon Socket Countersunk Head Bolts

2026-11-02

I-Dacromet-coated hexagon socket countersunk head bolt ihlanganisa isikulufu esilingana nesikulufa esilingana nesembozo se-zinc-aluminium flake esiletha amahora angama-720–1,000 okumelana nesifutho sikasawoti - isikhathi eside ngokuphindwe kaningana kunamabhawodi ezinc ajwayelekile kagesi. Lesi sihloko sichaza ijiyomethri yebhawodi, inqubo yokumboza ye-Dacromet, indlela yayo yokulwa nokugqwala, nokuthi iqhathaniswa kanjani nezinye izindlela zokwelapha ezivikela ukugqwala kwezikulufu namabhawodi.

1. Isingeniso: Kungani Ukuvikela Ukugqwala Kubalulekile Kumabhawodi Nezikulufu

Izinto zokubopha - amabhawudi, izikulufu, amantongomane, namawasha - izingxenye ezisengozini kakhulu ukugqwala kunoma yiliphi ilunga eliboshiwe. Ibhawodi egqwalile ilahlekelwa ukulayishwa kuqala, ibambe imbobo yayo enentambo, futhi ekugcineni ibeke engcupheni ubuqotho besakhiwo bayo yonke inhlangano. Ezindaweni zasolwandle, amabhuloho omgwaqo onguthelawayeka, izakhiwo ezikhwezwayo elanga, nemishini yangaphandle, izikulufu ezijwayelekile ezifakwe ngezinc zingabonisa ukugqwala okumhlophe phakathi namaviki kanye nokugqwala okubomvu phakathi nezinyanga.

2. IJiyomethri Yomkhiqizo: I-Hexagon Socket Countersunk Head Bolt

Usayizi Womucu	Ububanzi Bekhanda (dk)	Ukuphakama Kwekhanda (k)	I-Hex Socket (izi)	Ikilasi Lamandla Aqinile	Ubude Obuvamile
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
I-M10 × 1.5	18.5 mm	5.4 mm	8 mm	8.8 / 10.9	20-120 mm
I-M12 × 1.75	21.5 mm	6.5 mm	10 mm	8.8 / 10.9	25-150 mm

Izinzuzo ezibalulekile zejometri zalolu hlobo lwesikulufu:

I-Dacromet-Coated Hexagon Socket Countersunk Head Bolts

Flush surface- Ikhanda elicwilisiwe aliphumeleli, lisusa amaphuzu futhi livumela izingxenye zokukhwelana zihlale phansi phezulu.
Umthamo we-torque ephezulu- Isokhethi ye-hexagon ihlanganisa ubuso obuyisithupha bokuthintana, idlulisa i-torque engu-30-50% ngaphezu kwedrayivu eboshiwe noma ye-Phillips ngaphambi kokukhumula.
Ukuhlanganyela kochungechunge— Imicu yomshini egcwele ifomu (noma izintambo zokuzithinta wena zezinhlelo zokusebenza ze-sheet-metal) zihlinzeka ngokucindezela okuqinile kwe-axial kwelunga eliboshiwe.

3. I-Dacromet Coating: Indlela Esebenza Ngayo

I-Dacromet yigama eliphawuliwe eseliphenduke igama lemboni ejwayelekile i-zinc-aluminium flake coatings isetshenziswa nge-dip-spin noma isifutho futhi yelaphe cishe ku-300 °C. Ngokungafani ne-electroplating, le nqubo ayiyona i-electrolytic, ngakho-ke ukumbozwa kwethula ukungabikho kwe-hydrogen embrittlement - isici esibalulekile sokuphepha samabhawodi anamandla aphezulu ebangeni le-10.9 nangaphezulu.

I-coating iyi-matrix e-silver-grey ye-zinc egqagqene namaflake e-aluminium (imvamisa engu-0.1–0.5 µm ubukhulu, 15–20 µm isiyonke) ehlanganiswe yi-inorganic chromium binder. I-anti-corrosion mechanism yayo iphindwe kathathu:

4. Ukusebenza Kwe-Anti-Corrosion: Idatha Yesifutho Sosawoti

Ukuhlolwa kwebhentshimakhi yokumelana nokugqwala kwe-fastener ukuhlolwa kwe-neutral salt spray (NSS) nge-ISO 9227 / ASTM B117. Ithebula lesi-3 liqhathanisa izikulufu eziboshwe nge-Dacromet nezinye izindlela zokwelapha ezivame kakhulu.

Ithebula 3 - Ukuqhathanisa ukumelana nokugqwala (ukuhlolwa kwe-NSS, amahora ukuya kokugqwala okubomvu kokuqala)

Ukwelashwa Okungaphezulu	Ukuqina Okujwayelekile	Ukugqwala Okumhlophe	Ukugqwala Okubomvu	Ingozi Ye-Hydrogen Embrittlement	Inkomba Yezindleko
Sula i-zinc plating (Zn)	5–8µm	24–96 h	150–300 h	Maphakathi	1.0
I-zinc plating ephuzi (Zn-Cr)	5–8µm	96–200 h	300–500 h	Maphakathi	1.2
I-Hot-dip galvanizing (HDG)	50–100 µm	—	1,000–2,000 h	Phansi	1.5
I-Dacromet (ijazi elingu-1)	5–8µm	480–720 h	720–1,000 h	Lutho	1.8
I-Dacromet (amajazi angu-2-3)	10–24µm	1,000+ h	1,500–2,500 h	Lutho	2.2
I-Dacromet + top-seal	10–24µm	1,200+ h	2,000–3,000 h	Lutho	2.5

5. Isiphetho

I-Dacromet-coated hexagon socket socket bolt countersunk head bolt ixazulula izinkinga ezimbili ezindala kakhulu ekubopheni okunentambo - ukugqwala nokuphuma - engxenyeni eyodwa. Ijiyomethri ye-countersunk ihlinzeka ngokuhlanganyela okushisayo, okuhlanzekile, okungenayo i-snag nedrayivu ye-hexagon ephezulu yetorque, kuyilapho i-zinc-aluminium flake enamathelayo ihlinzeka ngokuvikelwa kokuqeda ukugqwala komhlatshelo kanye nesithiyo okuthatha amahora angu-1,000 noma ngaphezulu ekuhlolweni kwesifutho sikasawoti, ngaphandle kokumbozwa kwe-hydrogen. Konjiniyela nabathengi abacacisa izikulufu namabhawodi wezindawo zangaphandle, zasolwandle, noma ezokuthutha, lesi sigaba se-fastener sinikezela ngezilinganiso ezingcono kakhulu zokuvikela ukugqwala nezindleko ezitholakala kubuchwepheshe besimanje bokubhowula.

Okwedlule. Okulandelayo.

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