Dacromet Coating Bolts-Chitsogozo Chokwanira cha Zinc-Aluminium Flake Coating Technology for Fasteners 

1.Kodi Dacromet ndi chiyani?

Dacromet idapangidwa kumapeto kwa zaka za m'ma 1960 ndi kampani yaku America ya Diamond Shamrock (kenako MCI, kenako NDS / Doerken MKS). Poyambirira adalengedwa kuti athetse kulephera kwa hydrogen embrittlement muzitsulo zamagalimoto zolimba kwambiri, kuyambira nthawi imeneyo yakhala muyeso wodziwika bwino padziko lonse lapansi, wotchulidwa pansi pa ISO 10683, ASTM B695, ndi mitundu yosiyanasiyana ya dziko (GB/T 18684 ku China).

Makhalidwe Ofunikira

Njira yopanda electrolytic: Dacromet imagwiritsidwa ntchito popaka dip-spin, osati electroplating. Palibe magetsi omwe amadutsa m'zigawozo, ndikuchotsa m'badwo wa haidrojeni komanso chiwopsezo chokhudzana ndi embrittlement.

Chophimba chopangidwa ndi flake: Chophimbacho chimakhala ndi zinc ndi aluminium flakes (20-60 nm thick) zomwe zimadutsana ngati shingles zapadenga, kupanga chotchinga chowundana, chamitundu yambiri.

Wowonda komanso wofanana: Kukhuthala kwake kumakhala 4-10 µm - kuonda kokwanira kuti ulusi ukhale wokwanira komanso kuti usasunthike, mosiyana ndi kukhuthala kokhuthala kotentha.

Zogwirizana ndi chilengedwe: Dacromet yamakono ilibe chromium ya hexavalent (Cr⁶⁺), yokumana ndi malangizo a RoHS, REACH, ndi ELV (End-of-Life Vehicle).

Zolimbana ndi kutentha: Chophimbacho chimapirira kutentha kosalekeza mpaka 250 ° C, kupangitsa kuti ikhale yoyenera polowera injini ndi zomangira zoyandikana nazo.

2.Key Ubwino

Superior corrosion resistance: 500-1,200 maola osalowerera ndale mchere kutsitsi (NSS) pa ISO 9227 - 5-10 nthawi kuposa plating wamba zinki (96-240 hrs).

Zero hydrogen embrittlement: Njira yosagwiritsa ntchito electrolytic imachotsa kuyamwa kwa haidrojeni, kupanga Dacromet kukhala chophimba chokondeka cha zomangira zamphamvu kwambiri (Giredi 8.8-12.9) pomwe electroplating imaletsedwa kapena yoletsedwa.

Kufanana kwabwino kwa coating: Dip-spin zokutira zimakwirira zamkati, mabowo osawona, ndi ma geometries ovuta kwambiri kuposa ma electroplating kapena galvanizing otentha. Mizu ya ulusi ndi mizu imalandira chithandizo chokhazikika.

Kupaka koonda, kulolerana kosungidwa: Pa 4-10 µm, Dacromet sichimasokoneza mgwirizano wa ulusi kapena maubwenzi amphamvu. Palibe kugogodanso mtedza kumafunika, mosiyana ndi zomangira zamalata otentha.

Kukana kutentha: Chophimba chofanana ndi cha ceramic chimasunga zinthu zake zoteteza kutentha mpaka 250 ° C (osalekeza) ndi 300 ° C (kanthawi kochepa), kuposa zokutira zakuthupi.

Kugwirizana ndi chilengedwe: Zaulere pa Cr⁶⁺, zimagwirizana ndi malangizo a RoHS, REACH, ndi ELV. Madzi okutira opangidwa ndi madzi amakhala ndi mpweya wochepa wa VOC poyerekeza ndi njira zina zosungunulira.

Kumamatira kwabwino komanso kukana kuvala: Chophimba cha flake chomangika ndi mankhwala chimalimbana ndi kuphwanyidwa, kukanda, ndi kusamalira kuwonongeka kuposa plating wamba.

3. Kuyerekeza ndi Zopaka Zina

Gome ili m'munsili likufanizira Dacromet ndi njira ziwiri zoyatsira zomangira zodziwika bwino - zokutira za zinki ndi electroplated zinc galvanizing:

Kupopera mchere pa ISO 9227 NSS. Chiwopsezo cha hydrogen embrittlement chimagwiranso ntchito pa zomangira zamagetsi za Giredi 10.9 ndi kupitilira apo.

4. Mapulogalamu

Zagalimoto: Zida za injini, zomangira chassis, ma brake system, magawo oyimitsidwa, ndi zida zamkati. Dacromet imatchulidwa ndi ma OEMs akuluakulu (VW, Toyota, GM, Ford) chifukwa cha ma bolts amphamvu kwambiri (Giredi 8.8-10.9) pomwe kufunikira kwa hydrogen kuyenera kupewedwa.

Zomanga ndi zomangamanga: Zolumikizana ndi zitsulo, zida za mlatho, zomangira ma tunnel, ndi zomangira za konkriti zomwe zimawonekera kumadera achinyezi komanso kuwononga.

Zamagetsi & Mphamvu: Mabowuti a nsanja zotumizira, ma switchgear hardware, ndi zomangira zamagetsi zomwe zimafunikira kulimba kwakunja kwanthawi yayitali.

Sitima yapamtunda & mayendedwe: Ma rolling stock fasteners, track components, and signing equipment hardware zowululidwa ndi de-icing salt ndi dzimbiri mumlengalenga.

Marine & Coastal: Doko ndi zida zapa doko, zomangira za m'mphepete mwa nyanja, ndi zida zokhala ndi mchere wambiri (zowonjezera ndi topcoat yosindikizira kuti atetezedwe kwambiri).

Mphamvu yamphepo: Maboti a tower flange, zida za nacelle, ndi ma bolt a nangula a maziko omwe amafunikira zaka zambiri zotetezedwa kuti zisawonongeke.

Zipangizo & HVAC: Zomangira zotenthetsera kutentha, zida za ng'anjo, ndi zida zakunja zakunja komwe kukana kutentha ndi chitetezo cha dzimbiri zimafunikira.

Chidule

Dacromet ndiukadaulo wotsimikizika, wochita bwino kwambiri woletsa dzimbiri pazomangira zitsulo. Kapangidwe kake kapadera ka zinc-aluminium flake, kamene kamagwiritsidwa ntchito mopanda electrolytic dip-spin process, kumapereka maola 500-1,200 osakanizidwa ndi kupopera mchere popanda hydrogen embrittlement - ndikupangitsa kuti ikhale yopangira ma bawuti amphamvu kwambiri pamagalimoto, zomangamanga, ndi mphamvu. Ndi filimu yake yopyapyala, yofananira, kutsata chilengedwe, komanso kukana kutentha kwambiri, Dacromet imatsekereza kusiyana pakati pa plating ya zinki yotsika mtengo ndi chitsulo chosapanga dzimbiri chamtengo wapatali, zomwe zimapatsa magwiridwe antchito, kudalirika, ndi mtengo wofuna zomangira.