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Dacromet Flange Bolts: Superior Anti-Corrosion uye Anti-Rust Performance yeKuda Zvikumbiro.
2026-10-20
1. Nhanganyaya
Mabatiro echinyakare akadai se electroplated zinc kana hot-dip galvanizing kazhinji anodonha munzvimbo dzine hutsinye zvakanyanya kana kana akaiswa kune akakwirira-simba fasteners. Dacromet flange mabhoti inomiririra kufambira mberi kwakakosha muanti-corrosion tekinoroji, kusanganisa zvakanakira mabhaudhi eflange neakasarudzika ngura-inhibiting zvimiro zvezinc-aluminium flake coatings.
Mabhaudhi eFlange ane washer-yakafanana flange pasi pemusoro, iyo inogovera clamping simba zvakaenzana, inoderedza njodzi yekukuvadzwa kwepasi, uye inovandudza kuramba kusunungura pasi pekudengenyeka. Kana mabhaudhi aya achibatwa neDacromet (inozivikanwawo se zinc-flake kana DACROMET® coating), inopa yakanakisa dziviriro yenguva refu kubva kune unyoro, munyu wekupfapfaidza, kurwisa kemikari, uye kuparara kwemhepo-ichiita kuti ive yakanaka kune mota, yemugungwa, zvivakwa, simba, uye inorema michina yekushandisa.
2. Kunzwisisa Dacromet Coating Technology
Dacromet isiri-electrolytic, mvura-based inorganic coating system inoumbwa zvakanyanya neanopfuura zinc uye aluminium flakes akaparadzirwa muchromium-ine kana chromium-isina inorganic binder. Inoshandiswa ne dip-spin, spray, kana dip-drain nzira uye mushure mekupisa-kuporeswa, iyo yekupfeka inoumba mutete (kazhinji 5-15 μm), yunifomu, sirivheri-grey inodzivirira firimu inonamatira zvakasimba kune substrate yesimbi.
Iyo anti-corrosion mechanism yeDacromet inoshanda kuburikidza nezviito zvina zvinopindirana:
1.Barrier protection: Kupindirana zinc uye aluminium flakes zvinogadzira akawanda akaturikidzana ayo anotadzisa kupinda kwehunyoro, okisijeni, uye maion anoparadza.
2.Chibayiro (galvanic) kudzivirira: Zinc inoshanda sechibairo anode, inosarudzika kukanganisa kudzivirira simbi yepasi kubva ngura.
3.Kuzvirapa / kuzvigadzirisa: Oxidation zvigadzirwa zve zinc uye aluminium zvinozadza micro-kukuvadza mujasi, kuchengetedza inoenderera anti-ngura kutendeseka.
4.Pasivation: Iyo inorganic binder uye passivating makomisheni inononoka kushandiswa kwekubaira kwe zinc, zvichirebesa kusaita ngura.
Nemhaka yekuti maitiro acho anosanganisira kusatora asidi kana electrolysis, Dacromet coating inobvisa zvachose njodzi yehydrogen embrittlement-yakakosha mukana wepamusoro-simba mabhaudhi (Grade 10.9, 12.9, uye ASTM A490 / F3125). Izvi zvinoita kuti Dacromet flange mabhaudhi ese ari maviri akavimbika emuchina uye anopokana zvakanyanya kune ngura uye kukanganisa kwezvakatipoteredza.
3. Mabhenefiti Akakosha eDacromet Flange Bolts
3.1 Kunyanya Kuora uye Rust Resistance
Dacromet-yakavharwa flange mabhoti anogara achiwana 1 000 maawa kana kupfuura yekusarerekera munyu kupfapfaidza kuyedzwa (ASTM B117 / ISO 9227) pasina kutaridzika kwehutu tsvuku. Mune zvakawanda zvakatsanangurwa, ngura chena inononoka kupfuura maawa 240-500, uye kushanda kwese-anti-corrosion kwakapetwa ka7-10 kudarika kunowanzoitwa electrogalvanizing. Iyi yakasarudzika ngura-inodzivirira kugona inovimbisa hupenyu hurefu hwesevhisi munzvimbo dzemahombekombe, mugungwa, maindasitiri, uye de-icing-munyu.
3.2 Hapana Hydrogen Embrittlement Ngozi
Kusiyana ne electroplating maitiro ayo anosuma hydrogen mu-high-tensile simbi, iyo Dacromet dip-spin kana spray process haina-electrolytic. Nekuda kweizvozvo, yakakwirira-simba mabhaudhi eflange anochengetedza akazara ma mechanical zvivakwa uye haana kunonoka brittle fracture inokonzerwa nehydrogen embrittlement-inopa zvese zvinodzivirira ngura uye kuchengetedzwa kwemaitiro.
3.3 Mutete, Uniform Coating ine Yakanakisa Dimensional Kudzora
Yakajairika coating ukobvu kubva 5 kusvika 15 μm. Iri firimu rakatetepa harina kunyanya kushandura shinda, zvichiita kuti nzungu dzishandiswe pasina kuwandisa. Iyo yekuputira inopinda yakaoma geometries, shinda, uye recesses zvakafanana, kuve nechokwadi chakazara anti-corrosion kufukidzwa kunyangwe pane yakaoma flange bolt profiles.
3.4 High-Temperature Kugadzikana uye Zvimwe Zvikomborero
Dacromet coatings inoramba ichishanda pane inoenderera tembiricha inosvika 250-300 ° C, ichipfuura zvakanyanya miganhu yekupisa yeyakajairwa zinc plating. Mamwe mabhenefiti anosanganisira kunaka kwekupenda, inodzorwa friction coefficients (kunyanya ane lubricated topcoats), bimetallic inoenderana nealuminium, uye kutevedzera akawanda emota uye ezvakatipoteredza mwero.
4. Kuita Kuenzanisa neAlternative Coatings
Kuenzanisa kunotevera kunoratidza kuti nei Dacromet flange mabhoti achiwanzosarudzwa kana nguva yakareba inopesana ne-rust performance, dimensional accuracy, uye kusimba kwepamusoro-soro kunodiwa panguva imwe chete.
Tafura 1. Kuenzanisa Corrosion Resistance uye Key Properties
| Property | Dacromet (Zinc Flake) | Electroplated Zinc | Hot-Dip Galvanizing | Black oxide |
| Typical Ukobvu | 5–15 μm | 5–15 μm | 40–100+ μm | <1–2 μm |
| Munyu Spray (kusvika kune tsvuku tsvuku) | 1,000+ maawa | 96–240 maawa | 500–1,500 maawa | <24–48 maawa |
| Hydrogen Embrittlement Ngozi | Hapana | Yakakwirira (inoda kubika) | Zvinogoneka (asidhi pickling) | Low |
| Temperature Resistance | Kusvikira ~ 300 °C | ~70–120 °C | ~200 °C | Limited |
| Thread Fit / Dimensional Impact | Yakanakisa (yakaonda firimu) | Zvakanaka | Inoda overtapping | Excellent |
| Anti-Rust Hurefu hwehupenyu (kunze) | 15–25+ makore* | 2-5 makore | 15-30+ makore | Indoor chete |
* Hupenyu hwesevhisi hunoenderana nekuoma kwezvakatipoteredza, giredhi rekupotera, uye topcoat. Hunhu hunoratidza zvichibva pane data reindasitiri.
Tafura 2. Yakajairika Dacromet Coating Grades uye Salt Spray Performance
| Giredhi / Coating Weight | Coating Weight (g/m²) | Maawa asina White Rust | Maawa asina Red Rust |
| Giredhi A (Standard) | ≈ 24 | ≈ 240 | ≈ 600 |
| Giredhi B (Yakawedzerwa) | ≈ 36 | ≈ 240 | ≈ 1,000 |
| Hurefu hwepamusoro / Premium | ≈ 80+ | Higher | 1,000–2,000+ |
Cherechedza: Mhedzisiro chaiyo inosiyana ne substrate, geometry, maitiro ekushandisa, uye kushandiswa kwezvisimbiso/topcoat (semuenzaniso, PLUS® kana DACROLUB®). Dhata inoratidzwa kubva kune yakajairwa DACROMET® 320/500 kuita.
5. Mashandisirwo Akajairika eDacromet Flange Bolts
Nekuda kwemabhenefiti avo maviri eyakasanganiswa flange mutoro kugovera uye yepamusoro anti-corrosion / anti-rust performance, Dacromet flange mabhoti anotsanangurwa zvakanyanya muzvikamu zvinotevera:
Motokari & Zvekufambisa: Chassis, kumiswa, kukwirisa injini, masisitimu emhepo, uye magungano ezvimiro akaoneswa munyu wemugwagwa uye unyoro.
Marine & Offshore: Zvigadzirwa zvengarava, mapuratifomu ekumahombekombe, nheyo dze turbine yemhepo, uye zvivakwa zvemahombekombe zvinoda kwenguva refu yemunyu-spray kuramba.
Kuvaka & Infrastructure: Mabhiriji, zvimiro zvesimbi, shongwe dzekutapurirana, uye mafuremu ekunze mumhepo inoora.
Michina Inorema & Zvekurima: Zvishandiso zvakafumurwa kune fetireza, kubvongodzwa kwevhu, hunyoro, uye kuzunguzika.
Energy & Industrial: Kugadzira magetsi, zvidyarwa zvemakemikari, uye kutonhora kwakanyanya kana makemikari ane hutsinye uko kudzivirira ngura kwakakosha.
6. Mhedziso
Dacromet flange mabhaudhi inopa yakasarudzika chiyero chemichina yekuita uye advanced anti-corrosion tekinoroji. Yavo yakatetepa asi inoshanda zvakanyanya zinc-aluminum flake coating inopa kusarudzika kune ngura, munyu pfapfaidzo, mwando, uye kurwisa kwemakemikari, nepo isiri-electrolytic process inodzivirira zvachose njodzi yehydrogen embrittlement ine chekuita ne-high-simba fasteners. Yakasanganiswa nemabhenefiti ekugovera-mutoro weiyo flange musoro dhizaini, mabhaudhi aya anopa yakasimba, yakaderera-yekugadzirisa yekumisikidza mhinduro kune dzimwe dzenzvimbo dzinonyanya kudiwa muzvikamu zvemotokari, zvemugungwa, zvekuvaka, simba, uye maindasitiri.
Kana nguva yakareba inopesana ne-rust performance, dimensional precision, kugadzikana kwekushisa, uye kutendeseka kwemaitiro zvose zvinodiwa, Dacromet-coated flange bolts inomira sechisarudzo chakaratidza uye chakavimbika. Kutsanangudza giredhi rekuvhara rakakodzera, kuonesa kuita kwemunyu-spray, uye kuona kuti zvinhu zvinowirirana zvinokwirisa hupenyu hwesevhisi uye kuderedza kutadza kunoenderana nekuora.
Key Takeaways
| • Superior anti-corrosion: kazhinji 1,000+ maawa emunyu spray pasina tsvuku tsvuku. • Zero hydrogen embrittlement ngozi - yakanaka kune yakakwirira-simba (10.9 / 12.9) flange mabhoti. • Kupfekedzwa kweyunifomu kwakatetepa kunochengetedza shinda uye mativi akarurama. • Yakanakisa kupisa kupisa (kusvika ~ 300 ° C) uye kuzvirapa-kupodza maitiro ekurwisa ngura. • Inosarudzwa sarudzo yenzvimbo dzakaoma uko kudzivirira ngura kwenguva refu kwakakosha. |
