Dacromet-Ti a bo Hexagon Socket Countersunk Head boluti

2026-11-02

Dacromet-coated hexagon socket countersunk head bolt daapọ ori skru countersunk ti o ni ibamu pẹlu zinc-aluminiomu flake boluti ti o gba awọn wakati 720-1,000 ti iyọ-sokiri iyọ - ni ọpọlọpọ igba to gun ju awọn boluti zinc elekitiro-palara deede. Nkan yii ṣe alaye geometry boluti, ilana ibora Dacromet, ẹrọ ipata rẹ, ati bii o ṣe ṣe afiwe pẹlu awọn itọju imudaniloju ipata miiran fun awọn skru ati awọn boluti.

1. Iṣafihan: Kini idi ti Idaabobo Ibajẹ Awọn nkan fun awọn boluti ati awọn skru

Awọn fasteners - awọn boluti, awọn skru, awọn eso, ati awọn ifọṣọ - jẹ awọn ohun elo ti o ni ipalara pupọ julọ ni eyikeyi isẹpo ti a ti pa. Boluti rusted npadanu iṣaju iṣaju, gba ninu iho ti o tẹle ara rẹ, ati nikẹhin ba ijẹẹmu igbekalẹ ti gbogbo apejọ naa. Ni awọn agbegbe ti omi, awọn afara opopona, awọn ẹya gbigbe oorun, ati ẹrọ ita gbangba, awọn skru ti o ni zinc lasan le ṣafihan ipata funfun laarin awọn ọsẹ ati ipata pupa laarin awọn oṣu.

2. Geometry ọja: Hexagon Socket Countersunk Head Bolt

Iwọn Iwọn	Iwọn ori (dk)	Giga ori (k)	Hex Socket (awọn)	Fifẹ Agbara Kilasi	Awọn ipari ti o wọpọ
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

Awọn anfani geometry bọtini ti iru skru yii:

Dacromet-Ti a bo Hexagon Socket Countersunk Head boluti

dada dada- ori countersunk ko jade, imukuro awọn aaye snag ati gbigba awọn ẹya ibarasun lati joko ni alapin lori dada.
Agbara iyipo giga- iho hexagon ṣe awọn oju olubasọrọ mẹfa, gbigbe 30–50% iyipo diẹ sii ju iho tabi awakọ Phillips ṣaaju yiyọ kuro.
Ibaṣepọ okun- awọn okun ẹrọ kikun-fọọmu (tabi awọn okun titẹ ti ara ẹni fun awọn ohun elo dì-irin) pese clamping axial ti o lagbara ti igbẹpọ bolted.

3. The Dacromet Coating: Bawo ni O Nṣiṣẹ

Dacromet jẹ orukọ ti o ni aami-iṣowo ti o ti di igba ile-iṣẹ jeneriki fun zinc-aluminiomu flake ti a bo Loo nipasẹ dip-spin tabi sokiri ati mu larada ni isunmọ 300 °C. Ko dabi electroplating, ilana naa kii ṣe itanna, nitorinaa ti a bo ṣe ṣafihan ko si embrittlement hydrogen - ifosiwewe aabo to ṣe pataki fun awọn boluti agbara-giga ti ite 10.9 ati loke.

Ibora naa jẹ matrix fadaka-grẹy ti zinc agbekọja ati awọn flakes aluminiomu (eyiti o nipọn 0.1-0.5 µm, 15–20 µm lapapọ) ti a somọ nipasẹ asopọ agbo chromium inorganic. Ilana egboogi-ibajẹ rẹ jẹ ilọpo mẹta:

4. Anti-Ibajẹ Performance: Iyọ Sokiri Data

Idanwo ala-ilẹ fun resistance ipata fastener jẹ idanwo iyọ didoju (NSS) fun ISO 9227 / ASTM B117. Tabili 3 ṣe afiwe awọn skru ti a bo Dacromet pẹlu awọn itọju dada yiyan ti o wọpọ julọ.

Tabili 3 - Ifiwera resistance ibajẹ (idanwo NSS, awọn wakati si ipata pupa akọkọ)

dada Itoju	Sisanra Aṣoju	Ipata funfun	Ipata pupa	Ewu Embrittlement Hydrogen	Atọka iye owo
Pipin sinkii kuro (Zn)	5–8 µm	24–96 wakati	150-300 wakati	Alabọde	1.0
Pipin sinkii ofeefee (Zn-Cr)	5–8 µm	96–200 wakati	300-500 wakati	Alabọde	1.2
Fífibọ̀ gbigbona (HDG)	50–100 µm	—	1,000-2,000 h	Kekere	1.5
Dacromet (aṣọ 1)	5–8 µm	480–720 wakati	720–1,000 h	Ko si	1.8
Dacromet (ẹwu 2-3)	10–24 µm	1,000+ wakati	1,500-2,500 h	Ko si	2.2
Dacromet + oke-ididi	10–24 µm	1,200+ h	2,000-3,000 h	Ko si	2.5

5. Ipari

Boluti ori boluti hexagon hexagon ti Dacromet ṣe yanju awọn iṣoro meji ti atijọ julọ ni isunmọ okun - ipata ati itujade - ninu paati kan. Awọn geometry countersunk n funni ni ṣiṣan, mimọ, isopo-ọfẹ snag pẹlu awakọ hexagon ti o ga-yipo, lakoko ti ibora flake zinc-aluminiomu n pese irubọ ati idena aabo idaabobo ipata ni awọn wakati 1,000 tabi diẹ sii ni idanwo sokiri iyọ, laisi idawọle hydrogen. Fun awọn onimọ-ẹrọ ati awọn olura ti n ṣalaye awọn skru ati awọn boluti fun ita gbangba, omi okun, tabi awọn agbegbe gbigbe, kilasi fastener yii nfunni ni ọkan ninu awọn iwọn ipata-idaabobo-si-iye ti o dara julọ ti o wa ni imọ-ẹrọ bolting ode oni.

Iṣaaju. Itele.

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