Dacromet Hexagonal Bolts-Mawu Omveka Omveka a Zomangamanga Zogwira Ntchito Zazikulu za Corrosion 

2. Kodi Dacromet Coating ndi Chiyani?

Dacromet ndi makina opaka utoto opangidwa ndi ma ultra-fine zinc flakes, aluminiyamu ufa, ndi binder yochokera ku chromium (kapena yopanda chromium). Imagwiritsidwa ntchito ngati kubalalitsidwa kwamadzi ndikuchiritsidwa pafupifupi 300 ° C, imapanga chomangira cha amorphous chomwe chimalumikizana ndi ma flakes achitsulo kukhala filimu yoteteza. Kukhuthala kwake kumangokhala 4-8 μm - kuonda kwambiri kuposa kuviika kotentha (50-80 μm) - komabe kumapereka chitetezo chapamwamba cha dzimbiri. Pamwamba pake pali mawonekedwe ofanana a siliva-grey zitsulo.

Kore Composition: zinc flakes (60-80%) poteteza nsembe, ufa wa aluminiyamu (5-15%) wowonjezera zotchinga, chomangira chomwe chimadutsa pamwamba, ndi madzi opangidwa ngati chonyamulira.

3. Ubwino waukulu wa Dacromet Hexagonal Bolts

3.1 Kukaniza Kuwonongeka Kwapadera

Chophimba cha 4-8 μm Dacromet nthawi zambiri chimapirira maola oposa 1,000-1,200 akuyesa kupopera mchere wosalowerera ndale (ASTM B117) popanda dzimbiri lofiira-pafupifupi 7 mpaka 10 ntchito ya electro-galvanizing (maola 100-300). Magiredi ochita bwino kwambiri amatha kupitilira maola 2,000. Mapangidwe a flake amitundu yambiri amagwira ntchito ngati chotchinga chakuthupi komanso nsembe ya anode, yomwe imapereka chitetezo chanthawi yayitali m'mphepete mwa nyanja, m'mafakitale, komanso m'misewu yamchere.

3.2 Kumasuka ku Hydrogen Embrittlement

Electroplating yachikale imaphatikizapo pickling ya asidi ndi electrolysis, zomwe zingapangitse haidrojeni kukhala chitsulo champhamvu kwambiri ndi kuchititsa kuchedwa kung'ambika-makamaka kwambiri kwa ma bawuti a Giredi 10.9 ndi 12.9. Njira ya Dacromet imangogwiritsa ntchito makina oyeretsa komanso osagwiritsa ntchito electrolytic, kuchotseratu chiopsezo cha hydrogen embrittlement. Izi zimapangitsa kuti zikhale zokutira zomwe amakonda pamaboti achitetezo apamwamba kwambiri a hexagonal.

3.3 Kukaniza Kutentha Kwambiri

Zovala za Dacromet zimakhalabe zokhazikika komanso zoteteza kutentha kosalekeza mpaka 300 ° C. Zopaka za zinki wamba zimayamba kutsika pamwamba pa 70-100 ° C ndipo zimatha kusweka pa 200-300 ° C. Kukhazikika kwamafutawa kumapangitsa ma Dacromet hexagonal bolt kukhala abwino kwa magawo a injini, makina otulutsa mpweya, komanso malo otentha kwambiri a mafakitale.

3.4 Dimensional Kukhazikika ndi Kugwirizana kwa Ulusi

Chophimba chowonda kwambiri, chogwirizana sichisintha kukula kwa ulusi kapena kukula kwake. Mtedza umasonkhanitsidwa bwino popanda kugogoda mochulukira komwe nthawi zambiri kumafunika pambuyo pa kuthirira kotentha. Chophimbacho chimalowetsanso mabowo akuya, zotsalira, ndi malo amkati omwe electroplating sangathe kuteteza modalirika. Kuonjezera apo, filimuyi imamangiriza mwamphamvu ku gawo lapansi ndipo imavomereza zokutira zamtundu wina kapena utoto wokhala ndi zomatira kwambiri.

4. Kupanga ndi Kupaka Njira

Maboti a hexagonal amapangidwa kuchokera ku chitsulo chapakatikati kapena aloyi ndi chitsulo chozizira kapena kufota kotentha, kutsatiridwa ndi kugudubuza ulusi ndi chithandizo cha kutentha kuti akwaniritse kalasi yofunikira (nthawi zambiri 8.8, 10.9, kapena 12.9). Pambuyo poyeretsa bwino, zokutira za Dacromet zimagwiritsidwa ntchito motere:

1.Kukonzekera pamwamba: Kuchotsa mchere wamchere ndi kuyeretsa makina abrasive (palibe pickling asidi).

2. Coating ntchito: Dip-spin kumizidwa kwa zomangira zochulukirapo kapena kupopera mbewu pazigawo zazikulu; owonjezera ❖ kuyanika kuchotsedwa ndi centrifugation.

3. Kuchiritsa: Kuphika pa 300-320 ° C kwa mphindi 15-30 kuti apange mawonekedwe oteteza flake.

4. Chovala chapamwamba chosankha: Chosindikizira kapena mafuta odzola angagwiritsidwe ntchito kuti apititse patsogolo kukhazikika kwa dzimbiri ndikuwongolera kuchuluka kwa mikangano.

5. Zomwe Zimagwira Ntchito

Maboti a Dacromet hexagonal amafotokozedwa momveka bwino pomwe kudalirika kwanthawi yayitali pansi pazambiri kapena kutentha kwambiri ndikofunikira:

Zagalimoto: Chassis, kuyimitsidwa, ma brake system, zida zama injini, ndi zipinda zamkati zomwe zili ndi mchere wamsewu.

Mphamvu yamphepo & kufalitsa mphamvu: Maboliti a Tower ndi zomangira zomangira pamphepete mwa nyanja ndi ma turbine amphepo am'mphepete mwa nyanja.

Marine & Offshore: Zida zamakina ndi nsanja zomwe zimawonetsedwa ndi kupopera madzi amchere mosalekeza.

Zomanga ndi zomangamanga: Kulumikizana kwazitsulo zachitsulo, zigawo za mlatho, ndi zolumikizira zakunja.

Sitima, makina olemera, mlengalenga & chitetezo: Mfundo zomangira zamphamvu kwambiri zomwe zimatengera kugwedezeka, nyengo, komanso kupsinjika kwamakina.

6. Kuyerekeza ndi Zovala Zachikhalidwe

Kusiyana kwakukulu kwa magwiridwe antchito kumawonetsa chifukwa chake Dacromet imakondedwa pamaboti apamwamba kwambiri a hexagonal:

Makulidwe a zokutira: Dacromet 4–8 μm |  Electro-galvanizing 5–15 μm  |  Kutentha-kuviika galvanizing 50-80 μm

Kukana kupopera mchere (popanda dzimbiri): Dacromet ≥1,200 h  |  Electro-galvanizing 100–300 h  |  Kutentha-kuviika 500-800 h

Kuopsa kwa Hydrogen Embrittlement: Dacromet - Palibe  |  Electro-galvanizing - High  |  Kuviika kotentha - Pakatikati

Kutentha kwakukulu: Dacromet mpaka 300°C |  Electro-galvanizing ≤100°C  |  Kuviika kotentha ≤200°C

Kukwanira kwa ulusi: Dacromet imasunga kulekerera kolondola; kutentha-kuviika galvanizing nthawi zambiri kumafuna chipukuta misozi.

7. Miyezo, Maphunziro, ndi Mafotokozedwe

Maboti a Dacromet hexagonal amapangidwa motsatira miyezo yapadziko lonse lapansi kuphatikiza ISO 4014/4017, DIN 931/933, ANSI/ASME B18.2.1, ndi GB/T 5782/5783. Maphunziro a katundu wamba ndi 4.8, 8.8, 10.9, ndi 12.9 (metric) kapena Giredi 5 ndi Giredi 8 (inchi). Zida zimaphatikizapo zitsulo za carbon ndi alloy monga 35CrMo, 40Cr, ndi 42CrMo. Kukula kwake komwe kumasiyanasiyana ndi M5 mpaka M36 (makulidwe okulirapo omwe amapezeka kuti agwiritse ntchito mwapadera), mumitumbo yathunthu kapena yapang'ono. Ma OEM ambiri amagalimoto amalemba Dacromet kapena zokutira zofananira za zinc monga zovomerezeka zomangira zamphamvu kwambiri.

8. Kuganizira Zachilengedwe

Mapangidwe achikale a Dacromet amakhala ndi hexavalent chromium mu binder. Ngakhale kuti zokutira zochiritsidwa ndizokhazikika ndipo ndondomekoyi imapanga madzi oipa ochepa kwambiri kuposa electroplating, malamulo a zachilengedwe achititsa kuti pakhale njira zopanda chromium monga Geomt® ndi makina ena amakono a zinc-flake. Izi zimasunga zabwino za Dacromet pomwe zikukwaniritsa zofunikira za RoHS ndi REACH.

Ponseponse, njira ya Dacromet imaonedwa kuti ndi yabwino kwambiri kuposa chilengedwe kuposa electro-galvanizing wamba chifukwa imachotsa madzi osambira a asidi, njira za cyanide, ndi madzi otayira ambiri. Chemistry yochokera m'madzi imabweretsanso mpweya wochepa wa volatile organic compound (VOC).

9. Mapeto

Maboti a Dacromet hexagonal amapereka njira yogwira ntchito kwambiri pamapulogalamu omwe amafuna kudalirika kwamakina komanso kutetezedwa kwa dzimbiri kwa nthawi yayitali. Kuphatikizika kwawo kwa zokutira zoonda kwambiri koma zogwira mtima kwambiri, kumasuka kwathunthu ku hydrogen embrittlement, kukana kutentha kwambiri, komanso kuwongolera koyenera kumawapangitsa kukhala ofunika kwambiri pazomangira zamphamvu kwambiri pamagalimoto, mphamvu, zam'madzi, ndi zomangamanga.

Pamene malamulo a chilengedwe akusintha, zokutira zopanda chromium za zinc-flake zochokera kuukadaulo woyambirira wa Dacromet zikupitilizabe kukulitsa zosankha zingapo. Kaya amatchulidwa ngati Dacromet yachikale kapena yofanana ndi yamakono, ma bolt otchingidwa ndi hexagonal amatsimikizira kulimba komwe kumatalikitsa moyo wautumiki ndikuchepetsa mtengo wokonza m'malo owononga komanso otentha kwambiri. Pamalo olumikizirana ofunikira pomwe kulephera sikungatheke, ma bolts a Dacromet hexagonal amakhalabe amodzi mwamayankho odalirika komanso mwaukadaulo apamwamba omwe alipo lero.