Uma uthi 'insimbi engagqwali engu-410', abantu abaningi, ngisho nabathengi abathile, ngokushesha bacabanga ukuthi 'insimbi engagqwali, ilungele yonke into'. Lolo wugibe lokuqala. I-martensitic, okusho ukuthi iyaqina uma iphathwa ukushisa, akufani nokujwayelekile 304. Inozibuthe, ingagqwala uma uyiphusha, futhi ukushisela kwayo kuyingxoxo ehluke ngokuphelele. Ngibone imidwebo eminingi kakhulu lapho kucaciswa khona ngenxa nje yokuthi kuyindlela eshibhile engenasici, ngaphandle kokucabangela indawo yesevisi noma ukucubungula okudingekayo. Akukhona ukumiselela okungu-304 noma okungu-316. Ukwenza lokho kungalungile kuholela ezingxenyeni ezihlulekayo endaweni elimazayo noma ukuqhekeka ngesikhathi sokwenziwa. Ulwazi lwangempela alukho eshadini lokubunjwa kweshidi ledatha (11.5-13.5% Cr, akunjalo?), kodwa ekwazini ukuthi lisetshenziswa nini, lifakwa kanjani ngomshini, futhi ngokubaluleke kakhulu, ukuthi liphathwa kanjani ukuze lishiselwe emsebenzini.
Izimpawu Zento Ebalulekile kanye Nokusebenzisa Kabi Okujwayelekile
Isikhalazo esiwumongo we 410 insimbi engagqwali inhlanganisela yayo yokumelana nokugqwala okusesilinganisweni, izakhiwo ezihloniphekile zemishini ngemva kokuqina, kanye nezindleko eziphansi uma kuqhathaniswa. Lokho 'okumaphakathi' kuwukhiye. Esimeni esimaphakathi somoya noma samanzi ahlanzekile, kulungile. Kodwa phonsa ama-chloride, ama-acids, noma ngisho nomswakama oqhubekayo onezinto ezingcolile, futhi uzobona ukugqwala okungaphezulu. Akulona ibanga lasolwandle. Ngikhumbula iqoqo lezibophelelo zesakhiwo sezinsiza zasogwini esicacise 410 ukuze kongiwe izindleko. Bakhombise amabala ansundu abalulekile phakathi nezinyanga eziyisithupha. Iklayenti belicasukile, kodwa ukucaciswa bekungalungile ngendawo. Kudingeke ukuthi sishintshele ku-316 ukuze singene esikhundleni.
Lapho kukhanya khona kuzinhlelo zokusebenza ezidinga ubulukhuni nokumelana nokugqoka. Cabanga nge-pump shafts, izingxenye ze-valve, i-cutlery, noma ama-turbine blades. Kodwa nakhu okubambekayo: lobo bunzima buvela ekwelapheni ukushisa. Esimeni esishubile, iyakwazi ukuhleleka. Uma usuwenza lukhuni, yithi, i-HRC 40-45, ukwenza imishini kuba umsebenzi okhethekile. Udinga amathuluzi alungile, isivinini, nokuphakelayo. Uma ufuna ingxenye ethile, udinga ukucacela umphakeli wakho mayelana nesimo sokugcina esidingekayo. Ingabe ufuna ukuthi ihlinzekwe ukuze uyifake ngomshini futhi ulaphe? Noma uyayidinga iqiniswe ngokuphelele futhi igaywe? Leli gebe lokuxhumana lidala ukubambezeleka okukhulu kunanoma yini.
Yilapho i-Foundry nesitolo semishini esinolwazi olunzulu lwento ebalulekile lubalulekile. Inkampani efana I-Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), ngeminyaka yabo engu-30 ekulingiseni nasekukhiqizeni imishini, ngokuvamile besingasingatha lokhu kugeleza ngaphandle komthungo. Bazophonsa ingxenye besebenzisa igobolondo labo noma inqubo yokutshala imali, bese beqhubeka nokudonsa okudingekayo, ukukhanda kanzima, ukwelashwa kokushisa (ukucisha kanye nokushisa kubunzima obucacisiwe), kanye nokunemba kokugcina. CNC imishini noma ukugaya. Ukuzama ukuhlukanisa lezi zigaba phakathi kwabathengisi abaningi abangahambisani nokuziphatha kokubalulekile kucela inkinga ngokuzinza kwe-dimensional noma ukuqhekeka.
Umdanso Wokwelapha Ukushisa: Ukuwenza Kahle nalapho Kubi khona
Ukwelapha ukushisa i-410 kuwubuciko bayo. Umjikelezo ojwayelekile ufaka i-austenitizing cishe ku-980-1010°C, ukucisha uwoyela, bese kuba ukushisa. Izinga lokushisa elipholile lisho ubulukhuni bokugcina kanye nebhalansi yokuqina. Ukushisa okuphansi (okungaba ngu-200-400°C) kunikeza ubulukhuni obuphakeme kodwa ukumelana nomthelela ophansi. Iya phezulu (600-700°C), futhi uthola ukuqina okungcono kodwa ubulukhuni obuphansi. Kufanele uqondanise lokhu nomsebenzi wengxenye.
Ikhanda eliphathekayo liwukuhlanekezela. Ikakhulukazi ngezinsimbi eziyinkimbinkimbi noma izingxenye eziwumshini, ukucisha kwethula ingcindezi ne-warpage. Ukuze uthole ingxenye enembayo efana ne-shaft noma isihlalo se-valve, lokhu kungase kube inhlekelele. Sake saba nenqwaba yamadiski e-valve e-investment cast aphuma ekuphatheni ukushisa nokuphuma okungaphezu kwemikhawulo engasindisa. Isixazululo? Kwesinye isikhathi kumayelana nokulungisa ngesikhathi sokucisha, ngesinye isikhathi kumayelana nezigaba ezimaphakathi zokudambisa ingcindezi ngesikhathi somshini onzima, futhi kwesinye isikhathi kufanele wenze isabelomali sokusebenza kanzima kokugaya ngemuva kokushisa ukuze ubuyise ijometri. Akukona nje 'ukuyithumela ukuze iqiniswe'.
Elinye iphuzu elicashile izinga lokupholisa ngesikhathi sokuziphonsa. Ngoba ukutshalwa kwezimali izingxenye, isakhiwo se-as-cast singathinta indlela esisabela ngayo ngokulinganayo ekuphathweni kokushisa okulandelayo. I-Foundry eqonda lokhu izolawula amapharamitha enqubo yawo ukuze kukhiqizwe ukwakheka okusanhlamvu okufana kakhulu, okunikeze imiphumela ebikezelwayo ngaphezulu komfula. Lokhu akuzona izinto zezincwadi; iqongelele ulwazi lwenqubo kusukela ekusebenziseni izinkulungwane zokushisisa nokusakaza.
Amanothi Emishini Nokwakha Avela Esitezi Sesitolo
Ukukhanda i-annealed 410 kuqondile ngokunengqondo—kuziphatha njengensimbi ene-alloy ephansi. Sebenzisa amathuluzi e-rake avumayo, isipholile esihle, futhi ulungile. Inselele imayelana nempahla eqinile noma isimo 'sokuqina'. Amathuluzi e-Carbide ayadingeka, futhi i-ceramic noma i-CBN ingadingeka ekukhiqizeni ivolumu ephezulu yezingxenye eziqinile. Izinto zivamise ukusebenza nzima, ngakho udinga ukusikeka okunolaka ukuze ungene ngaphansi kongqimba oluqinile olwakhiwe ithuluzi elidlule. Ukusikeka okulula, ukuskimming kuzovele kushise ithuluzi lakho.
I-Welding yindawo yobuhlungu edume kabi nge 410 insimbi engagqwali. Kuthathwa njengokushisela, kepha kunezixwayiso ezinkulu. Ukushisa kwangaphambi kwesikhathi (okungaba ngu-200°C) kanye nokwelashwa kokushisa kwe-Post-Weld Heat (PWHT) cishe njalo kuyisibopho ukuvimbela ukuqhekeka okubandayo endaweni ethinteke ukushisa (HAZ). I-HAZ iba lukhuni futhi ibe nzima uma nje uyishisela bese uyishiya. Ngike ngabona amasondo ashiselwe ephuka ngokuzwakalayo ngenkathi epholisa phansi esitolo. Ukulungisa ama-welds noma ukwakhiwa, ukusebenzisa i-309L yokugcwalisa insimbi kuvamile ukwethula i-austenite eyengeziwe futhi kuthuthukiswe ukumelana nokuqhekeka. Kodwa ngokweqiniso, uma idizayini ibandakanya ukushisela okubalulekile kwe-410, kufanelekile ukuhlola kabusha ukukhetha kwezinto ezibonakalayo.
Amaqiniso ohlelo lokusebenza nokucatshangelwa kokutholwa
Ngakho-ke ingabe i-410 yenza umqondo wangempela? Ilungele izingxenye zemishini ezisebenza ngokoma. Amabhusha, amagiya, nezixhumi kumpahla kawoyela negesi (lapho kulawulwa indawo ezungezile, hhayi i-wellhead), izingxenye zemishini yokugaya amaphepha ezikhonjelwe ukuhuzuka, nezinto zokucubungula ukudla lapho izimo zokugqwala zithambile kodwa kudingeka ukuhlanzeka. Isilinganiso sayo esiphezulu samandla nesisindo ngemva kokwelashwa nakho kuyinzuzo.
Lapho uthenga, awugcini nje ngokuthenga into ethile, kodwa uthenga ikhono lenqubo. Udinga umphakeli othola lonke iketango. Ebheka Idatha ye-QSY ububanzi - ukubunjwa kwegobolondo, ukutshala imali, CNC machining, kanye nolwazi olunama-alloys akhethekile—kubonisa ukuthi ahlelelwe lolu hlobo lokukhiqiza oluhlanganiswe mpo. Ngengxenye ejikelezayo ebalulekile eyenziwe ngo-410, ungafuna ukuthi bayisakaze, bayiphathe ngaphansi kwezimo ezilawulwayo, bese bayiqedela ngomshini, konke ngaphansi kophahla olulodwa. Lokhu kulawula okuguquguqukayo. Ukuthumela into engenalutho emshinini wokushisa ojwayelekile bese esitolo semishini esihlukile kwethula ama-handoff amaningi lapho imininingwane ingahlanjululwa khona.
Izindleko zihlale ziyisici. 410 ihlezi endaweni emnandi phakathi kwezinsimbi zekhabhoni nezinsimbi ze-nickel austenitic eziphakeme. Kodwa izindleko eziphelele kufanele zifake ukucubungula. Ingxenye edinga umshini oyinkimbinkimbi ngemva kokuqina izobiza kakhulu kunaleyo eklanyelwe ukugaya. Uzakwethu omuhle wobunjiniyela uzogqamisa lokhu kuhwebelana kusenesikhathi.
Imicabango Yokugcina: Ingcweti, Hhayi I-Generalist
Ukuphetha lokhu, 410 insimbi engagqwali iyinto ewusizo kakhulu, kodwa idinga inhlonipho. Akuyona 'insimbi engagqwali' ngomqondo we-colloquial, set-it-and-forget-it. Ukuziphatha kwayo kuhlobene kakhulu nomlando wayo wokushisa. Impumelelo nayo itholakala ekuyiphatheni njengohlelo: idizayini yokwenziwa, cacisa isimo esidingekayo ngokunembile, khetha i-fabriki ene-metallurgical ne-process chops efakazelwe, futhi ungalokothi ucabange ukumelana nokugqwala kwayo.
Ukwehluleka engikubonile cishe kubuyela emuva kwesinye salezo zixhumanisi sibuthakathaka-umklami usiphatha njenge-304, umthengi uthenga kuphela ngezindleko eziyingxenye, noma isitolo somshini ngaphandle kwemithetho efanele yokwelapha ukushisa. Uma iketango liqinile, i-410 ikhiqiza izingxenye zokusebenza eziqinile, ezingabizi ezihlala njalo. Kuyihhashi elisebenzayo, kepha elidinga isibambi esinekhono.
