Kodi ma aloyi amkuwa ndi amkuwa ndi chiyani?

Bronze poyamba amatanthauzazitsulo zamkuwandi malata ngati chinthu chachikulu chowonjezera.Masiku ano, zosakaniza zonse zamkuwa kupatula mkuwa zimaphatikizidwa m'gulu la bronze, monga tin bronze, aluminium bronze ndi beryllium bronze.Komanso ndi mwambo kugawa mkuwa m'magulu awiri: malata mkuwa ndi Wuxi bronze.Amagwiritsidwa ntchito kwambiri popanga zida zolimbana ndi dzimbiri komanso zosavala, monga manja a shaft, ma thrust bearing pads, ndi zina zambiri.Zomwe zimapezeka kwambiri ndi mkuwa wa aluminiyamu, mkuwa wotsogolera ndi mkuwa wa beryllium.Mkuwa wa aluminiyamu umalimbana bwino ndi dzimbiri kuposa mkuwa wa malata, ndipo nthawi zambiri umagwiritsidwa ntchito popanga zida zolimbana ndi dzimbiri komanso zosavala, monga magiya, magiya a nyongolotsi, ma bushings, ndi zina zotere. monga contactors magetsi, maelekitirodi kwa makina kuwotcherera magetsi, mawotchi ndi mbali wotchi, etc.

Njira zambiri zakhala zikugwiritsidwa ntchito pofuna kuteteza mkuwa, chofunikira kwambiri chomwe ndikupita patsogolo kwa kafukufuku ndi chitukuko pogwiritsa ntchito mitundu yosiyanasiyana ya corrosion inhibitors.Pakalipano, Japan ili ndi kafukufuku wochulukirapo wokhudzana ndi chitetezo chamkuwa ndi mkuwa wa alloy pamwamba, makamaka pazinthu zopangira zokongoletsera zomangira, ndipo wapeza zambiri zopambana.Ntchito zapakhomo makamaka zimayang'ana kwambiri pakupukuta komanso kuletsa kusinthika kwa zinthu zamkuwa, ndipo kupita patsogolo kwina kwachitikanso.

Njira yotuluka mkuwa ndi mkuwa aloyi pamwamba passivation ndi: degreasing - kutsuka madzi otentha - kutsuka madzi ozizira - pickling (concentrated hydrochloric acid kapena misa gawo la 10%, firiji 30s) - kuchapa makina - amphamvu asidi kutsuka - kutsuka madzi - pamwamba. conditioning (30-90g /LCrO3, 15-30g/LH2S04, 15-30s)->kutsuka-pickling (112804 ndi gawo lalikulu la 10%)->kutsuka-passivation-kutsuka-kuyanika.Mafilimu osayenerera amtundu wa mkuwa ndi mkuwa akhoza kuchotsedwa mwa kulowetsedwa mu njira ya H2S04 ndi kagawo kakang'ono ka 1,000, hydrochloric acid kapena 300g/L sodium hydroxide solution.