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Dacromet Flange Bolts–Anti-Corrosion Flange Fasteners with Zinc-Aluminum Flake Coating
2026-07-15
Dacromet flange mabhaudhi anosanganisa dhizaini-kugovera dhizaini yemusoro weflange nepamusoro-soro kudzivirira kwekudzivirira kwe zinc-aluminium flake coating. Iyo yakakosha flange inobvisa kudiwa kwewasher yakaparadzana, nepo Dacromet coating ichiburitsa maawa 500-1,200 emunyu wekupfapfaidza kuramba pasina hydrogen embrittlement - zvichiita kuti zvigadziriso izvi zvive zvakanaka kune mota, kuvaka, uye zvekunze zvimiro zvekushandisa.
Chikamu 1 - Flange Bolt Overview
Chii chinonzi Flange Bolt?
A flange bolt ihekisi musoro bhaudhi ine yakabatanidzwa washer-kunge flange pazasi pemusoro. Iyo flange inogovera iyo clamping mutoro pamusoro penzvimbo yakafara, ichidzikisa kudzvanywa kwepamusoro pane yakabatana zvinhu uye kudzivirira kukuvadzwa kune yakapfava kana pendi nzvimbo. Izvi zvinobvisa kudiwa kwewashiro yakaparadzana, kurerutsa kusangana uye kuderedza chikamu chekuverenga.
Key Design Features
Integral flange: Inogovera clamping simba pamusoro penzvimbo yakakura kupfuura yakajairwa hex musoro, ichidzikisa kubereka kushushikana uye kudzivirira kudzika kwepasi.
Serrated sarudzo: Serrated flange pasi pezasi inoruma mukati mekusangana kwepamusoro, ichipa yakavakirwa-mukati-yekudzivirira-kusunungura inodzivirira pasina zvimwe zvekukiya zvikamu.
Zviyero zvakamisikidzwa: Yakagadzirwa kuDIN 6921, ISO 4162, kana GB/T 5787, kuve nechokwadi chekuchinjana mumaketani epasi rose.
High-simba mamakisi: Inowanikwa mukirasi yezvivakwa 8.8 uye 10.9, inokodzera zvimiro uye zvinotakura-kutakura zvikumbiro.
Zvinotsanangurwa
| Tsanangudzo | Value | Tsanangudzo | Value |
| Standard | DIN 6921 / ISO 4162 / GB/T 5787 | Thread | Metric M6 - M20 |
| Property Kirasi | 8.8 / 10.9 | Musoro Type | Hex ine integral flange |
| Coating | Dacromet (zinc-aluminium flake) | Coating Ukobvu | 4 – 10 µm |
| Kupfapfaidza munyu | 500 - 1,200 maawa (ISO 9227) | Material | Carbon simbi / alloy simbi |
| Serrated Option | Serrated / isina-serrated flange | Environmental | Cr⁶⁺-yemahara, RoHS inoenderana |
Chikamu 2 - Dacromet Coating Technology
Dacromet (达克罗) inogadziriswa nemvura, isiri-electrolytic pamusoro pekurapa iyo inoisa firimu rakatetepa rekuputika zinc uye aruminiyamu flakes akasungwa neinorganic chromium makomisheni. Inoshandiswa kuburikidza nedip-spin-cure process, inopa akawanda akaturikidzana ekudzivirira ngura pasina kuunza hydrogen musimbi - yakakosha mukana kune yakakwirira-simba fasteners.
Corrosion Protection Mechanism
Kudzivirirwa kwechibairo: Zinc flakes corrode zviri nani kuchengetedza simbi substrate, kunyangwe kana iyo yekupfeka ichikweshwa.
Chipingamupinyi chemuviri: Kupindirana kwezinc-aluminium flakes kunogadzira nzira ine tortuous inovharira hunyoro, okisijeni, uye maion anoparadza.
Chemical passivation: Mishonga yeChromium inoumba passive layer inononoka kuparara kwe zinc uye inopa kuzvirapa padiki-diki.
Mabhenefiti Akakosha eFlange Bolts
Hapana hydrogen embrittlement: Non-electrolytic process - yakachengeteka kuGiredhi 8.8-10.9 yakakwirira-simba flange mabhaudhi uko electroplating inorambidzwa.
Thin & uniform: 4–10 µm coating inochengetedza shinda yakakodzera uye flange geometry. Hapana kudzvanyazve kwenzungu kunodiwa.
500–1,200 maawa munyu pfapfaidzo: 5-10 nguva iri nani pane yakajairwa zinc plating, yakakodzera kwenguva yakareba yekunze kuratidzwa.
Inodzivirira kupisa: Inoshingirira sevhisi inoenderera kusvika 250°C - yakanakira injini bay uye exhaust-padhuze fasteners.
Zvinoenderana nemamiriro ekunze: Cr⁶⁺-yemahara, RoHS uye REACH zvinoenderana.
Coating Kuenzanisa
| Property | Dacromet | Zinc Plating | Hot-Dip Galv. |
| Kupfapfaidza munyu (maawa) | 500 - 1,200 | 96 – 240 | 300 - 1,000 |
| Hydrogen Embrittlement | Hapana | Ngozi (Gr. 10.9+) | Hapana |
| Ukobvu | 4 – 10 µm | 5 – 25 µm | 45 - 85 µm |
| Thread Fit Impact | Minimal | Low | Chinokosha |
| Heat Resistance | 250°C | 200°C | 250°C |
| Chitarisiko | Sirivha-grey, matte | Bhuruu-chena | Bright / spangled |
Kupfapfaidza munyu pa ISO 9227 NSS. Hydrogen embrittlement njodzi inoshanda kune electroplated fasteners Grade 10.9 uye pamusoro.
Summary
Dacromet flange mabhoti anopa musanganiswa unogombedzera wemakanika kushanda zvakanaka uye kudzivirira ngura. Iyo yakakosha flange inorerutsa kuungana uku ichigovera mutoro zvakaenzana, uye iyo Dacromet zinc-aluminum flake coating inoburitsa 500-1,200 maawa emunyu wekupfapfaidza kuramba pasina hydrogen embrittlement. Aya ma fasteners anoshandiswa zvakanyanya mumotokari, kuvaka, simba remhepo, uye zvikumbiro zvemugungwa uko zvese zvinovimbika kubata kwekuita uye kusimba kwenguva refu kwakakosha.
