Hexagon Socket Countersunk Head Bolts

2026-11-02

Dacromet-dahaarka dahaarka leh ee hexagon countersunk madaxa bolt wuxuu isku daraa madaxa birta-ku-dhufashada-ku-habboonaanta leh iyo daahan zinc-aluminium ah oo bixiya 720-1,000 saacadood oo caabbinta milixda ah - dhowr jeer oo ka dheer tan caadiga ah ee zinc boolalka elektro-plated. Maqaalkani wuxuu sharxayaa joomatari birta, habka daahan Dacromet, habka ka hortagga daxalka, iyo sida ay ula barbar dhigto daawaynta kale ee caddaynta miridhku ee boolal iyo boolal.

1. Horudhac: Waa maxay sababta Ilaalinta Daxalka ay muhiim ugu tahay Bolts iyo birta

Xidhiidhiyayaasha - boolal, boolal, nuts, iyo dhaqdhaqaaji - waa qaybaha ugu nugul daxalka ee kala-goysyada xiran. Daboolka daxalaystay ayaa luminaya rarida hore, waxa uu qabsadaa daloolkiisa dunta leh, oo aakhirka uu wax u dhimo sharafta qaab dhismeedka shirka oo dhan. Deegaannada badda, buundooyinka waddooyinka, dhismayaasha qoraxda lagu dhejiyo, iyo mashiinnada bannaanka, boolalyada zinc-plated ee caadiga ah waxay muujin karaan miridhku cad toddobaadyo gudahood iyo miridhku cas bilo gudahood.

2. Joomatari Alaabta: Hexagon Socket Countersunk Head Bolt

Xajmiga xadhigga	Dhexroorka madaxa (dk)	Dhererka madaxa (k)	Hex Socket (-yada)	Fasalka Xoogga Jilicsan	Dhererka caadiga ah
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

Faa'iidooyinka joomatari ee furaha ah ee nooca iskiriinka:

Dusha oo nadiif ah- madaxa countersunk ma soo baxo, baabi'inta dhibcooyinka iyo u ogolaanaya qaybaha lammaane in ay si siman u fadhiisan dusha sare.
Awoodda qulqulka sare- godka hexagon wuxuu ku lug leeyahay lix weji oo xiriir ah, oo gudbiya 30-50% torque ka badan kan godadsan ama Phillips ka hor inta aan la iska siibin.
Ka-qaybgalka xadhigga- Duubka mashiinka qaab-buuxa ah (ama dunta is-taabashada ee codsiyada birta-birta ah) waxay bixiyaan isku-xidhka axial adag ee wadajirka go'an.

3. Daboolka Dacromet: Sida ay u shaqeyso

Dacromet waa magac ganacsi oo noqday ereyga guud ee warshadaha zinc-aluminium flake dahaarka waxaa lagu mariyaa dip-spin ama buufin oo lagu daaweeyay qiyaastii 300 °C. Si ka duwan electroplating, geeddi-socodku waa non-electrolytic, sidaa darteed daaha ayaa soo bandhigaya ma jiro hydrogen ebrittlement - arrin badbaado oo muhiim ah oo boolal-xoog sare ee fasalka 10.9 iyo wixii ka sareeya.

Dahaarku waa matrix qalin-cawlan oo isku xidhan oo zinc iyo aluminium ah (sida caadiga ah 0.1-0.5 µm dhumucdiisuna tahay, 15-20 µm) oo ay ku xidhan tahay isku-xidhka isku-dhafan ee chromium-ka-gaaban. Nidaamkeeda ka hortagga daxalka waa saddex qaybood:

4. Waxqabadka Ka-hortagga Daxalka: Xogta buufinta milixda

Tijaabada bartilmaameedka ah ee iska caabbinta miridhku waa tijaabada buufinta milixda dhexdhexaadka ah (NSS) ee ISO 9227 / ASTM B117. Shaxda 3 waxa ay isbarbar dhigaysaa boolal Dacromet-ku dahaaran iyo daawaynta dusha kale ee ugu caansan.

Shaxda 3 - Isbarbardhigga iska caabinta daxalka (Tijaabada NSS, saacadaha ugu horreeya ee miridhku cas)

Daaweynta Dusha sare	Dhumucda caadiga ah	miridhku cad	miridhkii cas	Khatarta Embrittlement Hydrogen	Tusmada Qiimaha
Darista zinc cad (Zn)	5-8 µm	24-96 saac	150-300 saacadood	Dhexdhexaad	1.0
Darista zinc jaalaha ah (Zn-Cr)	5-8 µm	96-200 saacadood	300-500 saacadood	Dhexdhexaad	1.2
Galvanizing-kulul (HDG)	50-100 µm	—	1,000-2,000 saac	Hoose	1.5
Dacromet (1 jaakad)	5-8 µm	480-720 h	720-1,000 saac	Midna	1.8
Dacromet (2-3 jaakad)	10-24 µm	1,000+ saac	1,500-2,500 h	Midna	2.2
Dacromet + sare-seal	10-24 µm	1,200+ saac	2,000-3,000 saac	Midna	2.5

5. Gabagabo

Dacromet-da-daboolan ee hexagon-ka madaxa bolt wuxuu xalliyaa labada mashaakil ee ugu da'da weyn ee xirashada dunta - miridhku iyo soo bixista - hal qayb. Joomatari countersunk-ku wuxuu siinayaa isku-dhafka nadiifka ah, nadiifka ah, isku-dhafka-la'aanta ah ee leh wadista hexagon sare leh, halka daahanka zinc-aluminiumku uu daboolka ka bixiyo ilaalin ka-hortagga daxalka oo soconaysa 1,000 saacadood ama ka badan tijaabada milixda-buufinta, iyada oo aan lahayn isku-dhafan hydrogen. Injineerada iyo iibsadayaasha tilmaamaya boolal iyo boolal loogu talagalay bannaanka, badda, ama deegaanka gaadiidka, fasalkan xiraha wuxuu bixiyaa mid ka mid ah qiimaha daxalka-ilaalinta-qiimaha ee ugu wanaagsan ee laga heli karo tignoolajiyada casriga casriga ah.

Horay Xiga.

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