Impendulo:
Lesi sihloko sithi lapho izinga lokushisa lokugaya lingaphansi kuka-471°C, umzila wesitimela ubonakala ngombala wawo ovamile; phakathi kuka-471-600 ° C, ujantshi ubonisa ukushisa okuphuzi okukhanyayo; futhi phakathi kuka-600-735 ° C, indawo yesitimela ibonisa ukusha okuluhlaza okwesibhakabhaka. Ngakho-ke, umuntu angakwazi ukulinganisa izinga lokusha kukajantshi ngokubheka ukushintsha kombala endaweni yesitimela ngemva kokugaya.

Impendulo:
Imiphumela yokuhlaziywa kwe-EDS esihlokweni ibonisa ukuthi ngokwanda kwamandla amatshe okugaya, okuqukethwe kwezakhi ze-oksijini endaweni yesitimela kuncipha, okubonisa ukuncipha kwezinga le-oxidation endaweni yesitimela. Lokhu kuhambisana nokushintsha kombala endaweni kajantshi, okuphakamisa ukuthi amandla aphansi okugaya amatshe aholela ku-oxidation enamandla kakhulu.

Impendulo:
Lesi sihloko sibonisa ukuthi ngesikhathi sokubunjwa kwemfucumfucu, ukuguqulwa kwepulasitiki kwenzeka futhi ukushisa kukhiqizwa ngenxa yokucindezelwa kwama-abrasives; phakathi nenqubo yokuphuma kwemfucumfucu, indawo engaphansi yemfucumfucu igudla indawo engaphambili ye-abrasive futhi ikhiqize ukushisa. Ngakho-ke, umphumela ohlangene wokuwohloka kwemfucumfucu nokushisa okungqubuzanayo kuholela ezingeni eliphakeme le-oxidation endaweni engaphansi yemfucumfucu, okuholela ekutheni kube nokuqukethwe okuphezulu kwezakhi ze-oxygen.

Impendulo:
Imiphumela yokuhlaziywa kwe-XPS esihlokweni ibonisa ukuthi kukhona iziqongo ze-C1s, O1s, kanye ne-Fe2p endaweni yesitimela ngemva kokugaya, futhi iphesenti lama-athomu ama-O liyancipha ngezinga lokusha endaweni yesitimela. Ngokuhlaziywa kwe-XPS, kunganqunywa ukuthi imikhiqizo eyinhloko ye-oxidation endaweni yesitimela ngama-iron oxides, ikakhulukazi i-Fe2O3 ne-FeO, futhi njengoba izinga lokusha lincipha, okuqukethwe kwe-Fe2+ kuyanda ngenkathi okuqukethwe kwe-Fe3+ kuncipha.

Impendulo:
Ngokwalesi sihloko, amaphesenti endawo ephakeme kakhulu ku-spectrum encane ye-Fe2p kusukela ekuhlaziyweni kwe-XPS abonisa ukuthi kusukela ku-RGS-10 kuya ku-RGS-15, amaphesenti endawo ephakeme kakhulu e-Fe2+2p3/2 kanye ne-Fe2+2p1/2 akhuphuka kuyilapho amaphesenti endawo ephakemeyo ye-Fe3+2p3/2 kanye ne-Fe3+2p1/2 ehla. Lokhu kukhombisa ukuthi njengoba izinga lokusha kwendawo ujantshi lincipha, okuqukethwe kwe-Fe2+ emikhiqizweni ye-oxidation engaphezulu kuyakhuphuka, kuyilapho okuqukethwe kwe-Fe3+ kuncipha. Ngakho-ke, umuntu angakwazi ukwahlulela izinga lokushiswa kwendawo yesitimela kusukela ekushintsheni kwesilinganiso se-Fe2+ ne-Fe3+ emiphumeleni yokuhlaziya ye-XPS.

A: Ubuchwepheshe bokugaya i-High-speed Grinding (HSG) buyindlela ethuthukisiwe esetshenziselwa ukulungiswa kwesitimela esinesivinini esikhulu. Isebenza ngokunyakaza okuyinhlanganisela eslayidayo, eqhutshwa amandla ashayisanayo phakathi kwamasondo okugaya kanye nendawo yesitimela. Lobu buchwepheshe buvumela ukususwa kwezinto kanye nokuzilola okulimazayo, okunikeza isivinini esikhulu sokugaya (60-80 km/h) namafasitela okunakekela ancishisiwe uma kuqhathaniswa nokugaya okuvamile.

A: I-Sliding-Rolling Ratio (SRR), okuyisilinganiso sesivinini sokushelela ukuya kusivinini esiginqikayo, sinomthelela kakhulu ekuziphatheni kokugaya. Njengoba i-engeli yokuxhumana nomthwalo wokugaya ukhula, i-SRR iyakhula, ibonisa izinguquko ekunyakazeni kwenhlanganisela eslayidayo yamapheya okugaya. Ukushintsha ukusuka ekunyakazeni okubuswa ukuzungeza kuya kubhalansi phakathi kokuslayida nokuginqika kuthuthukisa kakhulu imiphumela yokugaya.

A: Ukulungiselela i-engeli yokuxhumana kuthuthukisa ukusebenza kahle kokugaya kanye nekhwalithi yendawo. Ucwaningo lubonisa ukuthi i-engeli yokuxhumana engu-45° ikhiqiza ukusebenza kahle okuphezulu kakhulu kokugaya, kuyilapho i-engeli yokuxhumana engu-60° ikhiqiza ikhwalithi ephezulu kakhulu yendawo. Ukuhwashala kobuso (Ra) kuncipha kakhulu njengoba i-engeli yokuxhumana ikhula.

A: Imiphumela yokuhlanganisa i-Thermo-mechanical, okuhlanganisa ukucindezelwa okuphezulu kokuxhumana, amazinga okushisa aphakeme, nokupholisa ngokushesha, kuholela ekuguqulweni kwe-metallurgical kanye nokuguqulwa kwepulasitiki phezu komzila wesitimela, okuholela ekwakhekeni kongqimba olumhlophe lwe-brittle etching (WEL). Le WEL ijwayele ukuphuka ngaphansi kwezingcindezi ezijikelezayo ezivela ekuthinteni kwesondo lesitimela. Izindlela ze-HSG zikhiqiza i-WEL enogqinsi olumaphakathi olungaphansi kwama-micrometer angu-8, izacile kune-WEL edalwe ukugaya okusebenzayo (~40 micrometers).

A: Ukuhlaziywa kwemfucumfucu yokugaya kunikeza imininingwane eyengeziwe ezindleleni zokususa izinto. Imfucumfucu efana nokugeleza kanye nomumese, ebonisa ukusebenza kahle kokugaya, ivame kakhulu kuma-SRR aphezulu. Ngokuphambene, i-block kanye nemfucumfucu esikiwe ibusa kuma-engeli aphansi okuxhumana, okubonisa ukusebenza okunganele kokugaya. Ukuba khona kwemfucumfucu eyindilinga kuyanda ngemithwalo yokugaya, okubonisa amazinga okushisa aphakeme okugaya.

IMPENDULO: Ukuslayida kusiza ukususwa kwempahla endaweni kaloliwe, kuyilapho ukuginqika kuthuthukisa ukukhishwa kwemfucumfucu kanye nokuzilola okulimazayo. Le bhalansi eguquguqukayo ibalulekile ekuzuzeni ukugaya okuphumelelayo ngokulimala okuncane okushisayo.

IMP: Ngokulungiselela ukunyakaza okuyinhlanganisela eslayidayo, ukusebenza kahle kokugaya kungathuthukiswa, izinga eliphezulu lingathuthukiswa, nempilo yesevisi yamasondo okugaya inganwetshwa. Amashadi erada abonisa ukuthi i-engeli yokuxhumana engu-45° inikeza ibhalansi engcono kakhulu iyonke yokusebenza kahle nekhwalithi, kuyilapho i-engeli yokuxhumana engu-60° ikhiqiza ngokuqhubekayo izindawo ezibushelelezi.

IMP: Lolu cwaningo lugcizelela ukubaluleka kokulinganisa ngokuguquguqukayo ukunyakaza kokuslayida nokuginqika ukuze kuthuthukiswe ukusebenza kokugaya, ukuthuthukisa ikhwalithi yendawo ephezulu, nokwelula impilo yesevisi yamasondo okugaya. Emaphasini okuqala okugaya, i-engeli yokuxhumana engu-45° ikhulisa ukusebenza kahle kokususa izinto, kuyilapho i-engeli engu-60° iqinisekisa ikhwalithi ephezulu yendawo ezigabeni zokuqeda.