I-Plasma Build Up Welding Corrosion Resistant Alloys

I-PlasmaI-Build Up Welding, njengobunye bobuchwepheshe bokuqinisa ubuso, bunobuhle bokuvela izinto ezihlukahlukene ze-alloy powder, ungqimba olungaphezulu oluminyene, ukuhlanjululwa okuphansi, ukusebenza kahle kokukhiqiza okuphezulu, ukusetshenziswa okuphansi kwezinto ze-alloy, nezindleko eziphansi.Ingaphezulu layo alikwazi ukugqwala, aligugi, Ukuthuthukiswa kokumelana nezinga lokushisa kudonse ukunakwa okwengeziwe.

Njengamanje, i-iron-based, i-nickel-based kanye ne-cobalt-based alloy powders isetshenziselwa ikakhulukazi i-plasma.i-buildup welding.I-ayina-based alloy powder inokumelana okuhle nokugqokwa kanye nenani eliphansi, kodwa ukumelana nokushisa okungekuhle kanye nokugqwala.Ama-alloy powders asekelwe ku-nickel kanye ne-cobalt anokumelana nokugqwala okuhle nokusebenza kwezinga lokushisa eliphezulu, kodwa izindleko ziphakeme kakhulu.Kusetshenziswa i-plasma arc ukufaka i-iron-based self-fluxing alloy powder, i-nickel-based self-fluxing alloy powder kanye ne-nickel-based alloy kanye ne-wc composite powder ebusweni bensimbi engu-16mn, ngokuhlolwa kokugqoka emithonjeni yezindaba egqwalayo, imiphumela emithathu. izinhlobo zezingqimba ezingaphezulu zacwaningwa nge-Microstructure, ukwakheka kwesigaba, ubulukhuni nokumelana nokugqoka.

Umthelela wemithombo yezindaba egqwalayo ehlukene ekumelaneni nokugqokwa kongqimba olufanayo lwe-alloy sufacing nalo lihlukile.Ukumelana nokugqokwa kongqimba olungaphezulu endaweni enamanzi angathathi hlangothi kungcono kunaleyo ephakathi kwe-acidic ne-alkaline.Lokhu kungenxa yokuthi ukugqoka okukodwa kusebenza emanzini.Kusixazululo se-HCl esihlanjululwayo kanye nesisombululo se-NaOH esincibilikayo, ibhethri elincane liyakhiqizwa phakathi kwenhlanganisela nesisombululo esiqinile, futhi kukhona ukusebenzisana phakathi kokuguga nokugqwala kwe-electrochemical, ukuze ungqimba olungaphezulu lube kusixazululo se-HCl ehlanjululwayo.Futhi ukumelana nokugqoka ku-dilute NaOH solution medium kuncishisiwe ngenxa yethonya lokumelana nokugqwala.

Uma kuqhathaniswa nokumelana nokugqokwa kongqimba olungaphezulu ku-HCl ehlanjululwe futhi ihlanza i-NaOH medium, kutholakala ukuthi ukumelana nokugqoka ku-dilute HCl medium kubi, ngoba ungqimba olungaphezulu lungakha ifilimu yokunciphisa i-HCl futhi lunciphise i-NaOH medium, Nokho, ifilimu ye-passivation ku-HCl ehlanjululwe kulula ukuwohloka, futhi ifilimu ye-passivation ekuxubeni i-NaOH medium ayilimazi kalula, ngakho-ke ukumelana nokugqokwa kwesendlalelo esingaphezulu ku-dilute NaOH medium kungcono kunaleyo ekuxubeni i-HCl acid..

Ukuqina kwesendlalelo esingaphezulu kwe-Ni60 kufana nokwe-Fe55.Ukumelana nokugqokwa kongqimba olungaphezulu lwe-Ni60 kusisombululo se-hydrochloric acid ehlanjululwe kanye nesisombululo se-NaOH esicwebezelayo kungcono kunokwe-Fe55, kodwa okuphambene kuyiqiniso emanzini angathathi hlangothi.Ngongqimba olungaphezulu lwengxubevange efanayo, ukumelana nokugqokwa endaweni ebolayo yesixazululo se-HCl ehlanjululwayo kanye nesisombululo se-NaOH esicwebezelayo siphansi kunaleso samanzi angathathi hlangothi, futhi ukuncipha kusobala kakhulu endaweni ene-acidic yenhlabathi.