Eyona njongo iphambili yokunyangwa komphezulu wepowder metallurgy parts:
1. Ukuphucula ukumelana nokunxiba
2. Ukuphucula ukuxhathisa umhlwa
3. Ukuphucula amandla okudinwa

Iindlela zonyango ezingaphezulu ezisetyenziswa kumgubo wesinyithi wesinyithi zinokwahlulwa ngokwesiseko ngokwezi ndidi zintlanu zilandelayo:
1. I-Coating: Gubungela umphezulu wecandelo elicutshungulwayo kunye noluhlu lwezinye izinto ngaphandle kokusabela kweekhemikhali
2. Unyango lweekhemikhali ezingaphezulu: ukusabela kweekhemikhali phakathi kwendawo edibeneyo kunye ne-reactant yangaphandle
3. Unyango lokushisa kweekhemikhali: ezinye izinto ezifana ne-C kunye ne-N zisasazeka kumphezulu wecandelo elicutshungulwayo
4. Ukulungiswa kobushushu bomhlaba: utshintsho lwesigaba luveliswa yinguqu ye-cyclic yokushisa, etshintsha i-microstructure yobuso benxalenye ecutshungulweyo.
5. Indlela yokuguqula iMechanical: ukuvelisa ukuguqulwa komatshini kumphezulu wecandelo elicutshungulwayo, ngokukodwa ukuvelisa uxinzelelo olushiyekileyo oluxinzelelekileyo, ngelixa ukwandisa ukuxinana komphezulu.

Ⅰ.Ukwaleka
I-Electroplating ingasetyenziswa kumgubo wesinyithi, kodwa inokuqhutywa kuphela emva kokuba iinxalenye zetsimbi yomgubo zifakwe ngaphambili (ezifana nokudipha ubhedu okanye ukudipha iwax ukuvala imingxuma) ukuthintela ukungena kwe-electrolyte.Emva konyango lwe-electroplating, ukuxhathisa kwe-corrosion kwamalungu ngokuqhelekileyo kunokuphuculwa.Imizekelo eqhelekileyo kukukhazimla (ukusebenzisa kwakhona ichromate ukwenza ipassivation emva kokufakwa kwegalvanizing ukufumana indawo emnyama okanye yomkhosi ohlaza omenyezelayo) kunye ne-nickel plating.
I-electroless nickel plating ingaphezulu kune-electrolytic nickel plating kwezinye iinkalo, ezifana nokulawula ubukhulu bokutya kunye nokusebenza kakuhle.
Indlela yokugqoka i-zinc "eyomileyo" ayifuni ukuba iqhutywe kwaye ayifuni ukutywinwa.Yahlulahlulwe ibe ngumgubo wokugalela kunye nokugalela ngomatshini.
Xa i-anti-rust, i-anti-corrosion, imbonakalo enhle kunye nokufakelwa kombane kuyadingeka, ukupeyinta kungasetyenziswa.Iindlela zinokwahlulwa ngakumbi zibe: ukugquma ngeplastiki, ukukhenkceza, kunye nokutshiza ngentsimbi.

Ⅱ.Unyango lwamachiza oMphezulu

Unyango lomphunga lolona luxhaphakileyo kuzo zonke iinkqubo zonyango lwangaphezulu lwamalungu omgubo wesinyithi.Unyango lomphunga kukufudumeza iindawo ukuya kuma-530-550°C kwiatmosfera yomphunga ukuvelisa umaleko womphezulu wemagnethi (Fe3O4).Ngokusebenzisa i-oxidation yobuso be-iron matrix, ukuxhathisa ukunxiba kunye neempawu zokukhuhlana ziphuculwe, kwaye iindawo ziyakwazi ukumelana nokusebenza kwe-Rust (yomelezwe ngakumbi ngokuntywiliselwa kweoli) I-oxide layer imalunga ne-0.001-0.005mm ubukhulu, igubungela yonke indawo yangaphandle. , kwaye inokusasazeka kumbindi wenxalenye ngokusebenzisa iipores ezidibeneyo.Ukuzaliswa kwale pore kwandisa ubunzima obubonakalayo, ngaloo ndlela Ukuphucula ukuxhatshazwa kokugqoka kwaye wenze ukuba ube neqondo eliphakathi lokudibanisa.

Unyango lwe-phosphate ebandayo kukusabela kweekhemikhali kwibhafu yetyuwa ukwenza iphosphate entsonkothileyo kumphezulu womsebenzi.I-zinc phosphate isetyenziselwa ukucolwa kwangaphambi kokwaleka kunye neplastiki yokwambathisa, kwaye iphosphate yemanganese isetyenziselwa ukukhuhlana.

I-bluing yenziwa ngokubeka i-workpiece kwindawo yokuhlambela i-potassium chlorate kwi-150 ° C nge-carrosion yekhemikhali.Umphezulu we-workpiece unombala omnyama ohlaza okwesibhakabhaka.Ubukhulu bomaleko we-bluing malunga ne-0.001mm.Emva kwe-bluing, umphezulu wamalungu mhle kwaye unomsebenzi wokuchasana nomhlwa.

Umbala we-nitriding usebenzisa i-nitrogen emanzi njenge-oxidant.Ngethuba lenkqubo yokupholisa i-workpiece emva kokutshisa, i-oxide layer yenziwa kwiqondo lokushisa le-200-550 ° C.Umbala womaleko we-oxide owenziweyo utshintsha kunye nobushushu bokusebenza.

I-Anodized anti-corrosion treatment isetyenziselwa iindawo ezisekelwe kwi-aluminium ukuphucula ukubonakala kwayo kunye nokusebenza okuchasene ne-corrosion.

Unyango lwe-Passivation lusetyenziswa kwiindawo zensimbi ezingenasici, ngokukodwa ukwenza i-surface oxide layer .Ezi oksidi zingenziwa ngokufudumeza okanye ngeendlela zekhemikhali, oko kukuthi, ukucwina nge-nitric acid okanye isisombululo se-sodium chlorate.Ukuze kuthintelwe isisombululo sokuntywiliselwa, ikhemikhali Indlela idinga unyango lwangaphambili lwe-wax.