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Ubunjineli bakamasipala

I-tunnel boring machine (TBM) i-cutter yizinyo le-TBM, ubomi benkonzo ye-cutter buchaphazela inkqubela phambili yokwakha kunye nokusebenza kakuhle.Kolu phononongo, i-Ni-based tungsten carbide composite powder yafakwa kumphezulu we-TBM cutter ring nge-laser cladding ukuphucula ukuxhathisa ukunxiba.I-microstructure ye-coating yahlaziywa, ukuxhatshazwa kokugqoka kwafundwa kwaye kuthelekiswa ne-substrate.Ingubo ekwazi ukumelana nokunxiba ene-porosity ephantsi yalungiswa kumphezulu we-5Cr5MoSiV1 cutter ring, ene-metallurgical bonding elungileyo kunye ne-substrate.Izigaba eziphambili zokwaleka zaziyi-γ-Ni, i-WC kunye ne-W2C.I-WC eyi-Spherical kunye ne-WC yayo ebolileyo kunye ne-W2C encinci isasazwa ngokubanzi kwi-coating, ithintela ngokufanelekileyo ukunyanzeliswa kunye nokulima kwamaqhekeza amatye anzima, ngaloo ndlela kuphuculwe ukunyanzeliswa kokunxiba kwengubo.Iziphumo ezibaliweyo zokulahleka komthamo ngaphambi nangemva kokugqoka zibonise ukuba ukunyanzeliswa kokugqoka kwe-cladding layer kwakungamaxesha angama-7 aphezulu kune-substrate.
I-Tungsten carbide yinto enzima eyenziwe yintsimbi ye-matrix composite apho iincinci ze-carbide zisebenza njenge-aggregate kunye ne-binder yensimbi isebenza njenge-matrix.Sesinye sezona zixhobo ziphumeleleyo zobunjineli ezakha zaveliswa.Indibaniselwano yayo eyodwa yamandla, ukuqina kunye nokuqina kuyanelisa ezona zicelo zifunwa kakhulu.
I-Tungsten carbide isetyenziselwa ukwenza izinto ezinzima ezifana nentsimbi okanye intsimbi, kunye nakwiimeko apho ezinye izixhobo ziya kuguga, njengezixhobo zemigodi kunye neengxenye zokunxiba.Uninzi lwexesha, i-carbide iya kushiya ukugqitywa okungcono kwinqanaba, kwaye ivumele ukwenziwa ngokukhawuleza.Izixhobo zeCarbide zinokumelana namaqondo obushushu aphezulu kunezixhobo zentsimbi zesantya esiphezulu.