Ubona i-304L yentsimbi engatyiwayo kumaphepha amaninzi, iphantse yangxolo yangasemva. Ukwahluka kwekhabhoni ephantsi kwe-304, ilungele i-welding, ixhathisa ukubola-wonke umntu uyayazi loo nto, akunjalo? Ngumgibe wokuqala lowo. Ngokwenza, umsantsa phakathi kwe-ASTM spec kunye nendlela eziphatha ngayo kwi-Foundry okanye kumgangatho wevenkile yomatshini kulapho umsebenzi wokwenyani wenzeka khona. Ndibone iiprojekthi ezininzi kakhulu zikhubeka kuba umntu uphawule nje ibhokisi ye-304L ngaphandle kokucinga malunga nokubunjwa, ubushushu, okanye yintoni eza kubonakaliswa kuyo. Asiyombumbulu yomlingo; yimathiriyeli enemikhwa enzima oyifundayo ngokungcolisa izandla zakho.
U-L Akayoncwadi Nje
Wonke umntu ugxile kumxholo wekhabhoni, max 0.03%, ukukhusela imvula ye-carbide ngexesha le-welding. Yincwadi yokufunda leyo. Kodwa kwi-investment casting, esisonka sethu kunye nebhotolo Qingdao Qiangsenyuan Technology Co., Ltd.(QSY), u-L uthetha enye into ngexesha lokugalela. Inyibilika iziphatha ngokwahlukileyo. Iyacotha ngakumbi, incindi encinci kune-304 yomgangatho. Yinto efihlakeleyo, kodwa iyakunyanzela ukuba ulungelelanise ipateni kunye nenkqubo. Oku sikufunde kwangethuba, kungekhona kwincwadana yemigaqo, kodwa kwintlaninge yezivalo zevalvu ekufuneka zilahliwe.
Emva koko kukho unyango lobushushu emva kokuphosa. Isisombululo se-annealing sibalulekile, kodwa ifestile yobushushu ivakala iqinile. Ujonge ukunyibilikisa nayiphi na i-carbides kwaye ubuyisele ezo chromium carbides kwisisombululo, kodwa awukwazi ukukwazi ukuyinyusa kakhulu. Siyiqhuba ngokwesiqhelo phakathi kwe-°C, silandelwa kukucinywa ngokukhawuleza. Umthombo wokucima ubalulekile nawo. Amanzi anobundlongo-ndlongo kwaye anokubangela ukugqwetheka kwizinto ezintsonkothileyo, ezinodonga olucekethekileyo; ngamanye amaxesha sikhetha ukucima umoya ngenkani kwiindawo eziethe-ethe ngakumbi. Lucingo lwesigwebo olusekwe kwicandelo lejometri, into oyakha ukuziva ngayo ixesha elide.
Kwaye ukuwelda? Ngokuqinisekileyo, iyathandeka ngakumbi. Kodwa kwimeko yethu CNC Machining kunye nokugqiba isebe, sihlala sifumana amacandelo afuna ukulungiswa kwe-weld okanye indibano. I-weld ngokwayo inokuba nesandi, kodwa indawo echatshazelwe bubushushu (HAZ) kwi-304L, ngelixa ixhathisa ngakumbi kwi-sensitization, isenokwenza utshintsho lwe-microstructural oluchaphazela uxhathiso lwe-corrosion yasekhaya ukuba awulumkanga ngolawulo lobushushu be-interpass. Ilungile, kodwa ayinakoyiswa. Usafuna umshiseli oyiqondayo into, hayi inkqubo kuphela.
Machining 304L: The Gummy Reality
Apha kulapho ithiyori idibana khona nesixhobo sokusika, rhoqo nge-screech ephoxayo. I-304L idume kakubi ngokusebenza nzima. Ukuba isixhobo sakho asikho bukhali, ukuba ukutya kwakho kunye nezantya zicinyiwe, okanye ukuba uhlala okomzuzwana, uya kuwenza lukhuni umphezulu, wenze okulandelayo kube liphupha elibi. Ayitshiphu kakuhle; ithanda ukwenza i-swarf emide, enentambo eyintlungu kunye nobungozi bokhuseleko.
Siye sazinza ngemithetho embalwa kwivenkile yethu. Ijometri yeharika entle, ngaphandle kombuzo. Ufakelo olubukhali, olugqunywe nge-carbide-sibe neziphumo ezindilisekileyo ngokutyabeka kwe-AlTiN. Ukutya rhoqo, ndlongondlongo. Awunako ukuba neentloni; kufuneka ungene phantsi komgangatho womsebenzi onzima. Ukupholisa akuxoxiswana, kwaye kuninzi, hayi nje ukupholisa kodwa ukunceda ukwaphula itshiphu. Siqhuba isantya esisezantsi kunokuba usenza kwintsimbi yekhabhoni engenanto, kodwa ngesantya esiphezulu sokutya. Sisenzo sokulungelelanisa osilungisayo kuwo wonke umsebenzi othile. Indlu yempompo eyinkimbinkimbi kunye noomatshini beendonga ezibhityileyo ngokwahlukileyo kuneflange eqinileyo.
Okubi kakhulu kuxa ufumana ukuphosa ngobulukhuni obungahambelaniyo. Ngamanye amaxesha, ngenxa yokwahluka okuncinci kumazinga okupholisa kubumba, unokufumana amabala anzima kunamanye. Isixhobo sakho siyantyiloza, emva koko sincokole kwaye sitshise. Kuya kufuneka uyeke, ujonge, mhlawumbi uphinde ukhuphe yonke into kwakhona ukuba imbi. Sesinye isizathu sokuba kutheni ulawulo lwenkqubo ukusuka ekunyibilikeni ukuya kunyango lobushushu lubaluleke kakhulu. Inkampani efana QSY, kunye namashumi eminyaka iqokobhe ngundo ukuphosa kwaye utyalo mali, yakha olo lwazi lweziko ekuhambeni komsebenzi ukunciphisa ezi ziguquguqukayo, kodwa izinto ezimangalisayo zisenzeka.
Ukonakala: Kumalunga nokusiNgqongileyo, hayi nje iBanga
Le yeyona ngcamango iphosakeleyo. Abantu bachaza i-304L yokuxhathisa umhlwa njengexesha lengubo. Kodwa hlobo luni lomhlwa? Umoya? Ngokuqinisekileyo, kuhle kakhulu. Uvelwano lwekhemikhali olungephi? Mhlawumbi kulungile. Kodwa ndibone ukusilela kwiindawo ezithile, ezimbi.
Iikloridi zezona zintshaba. Nakwiqondo lobushushu begumbi, ii-ion zekloridi zinokubangela ukubola kunye nokugrumba. Sibonelele nge-304L yofakelo kwimizila yamanzi engabalulekanga kwiplanti yonxweme. Bajongeka belungile unyaka, emva koko baqala ukuvuza kwimingxuma ye-pinprick phantsi kwemigibe yokugquma apho kuqokelelwa ukufuma. Izinto zaziza kuchazwa, kodwa imeko yayingalunganga. Ngaloo nto, kufuneka utsibe kwi-316L nge-molybdenum. Isifundo sasingengomgangatho wentsimbi; yayimalunga nobunjineli besicelo.
Emva koko kukho i-intergranular corrosion. Inqanaba le-L likhusela ngokuchasene nalo kwi-welding, kodwa ukuba inxalenye ibanjwe kwi-450-850 ° C ixesha elide kakhulu ngexesha lenkonzo-thi, kufuphi nomthombo wokushisa-ukuvalelwa kusengenzeka ngokuhamba kwexesha. Kukusilela okucothayo. Kufuneka ucinge malunga nomjikelo wobomi bonke becandelo, hayi nje indlela elenziwa ngayo.
I-Alloy Nuance kwivenkile yezinto ezininzi
Ukusebenza kwindawo efana neyethu QSY, apho siphatha yonke into ukusuka intsimbi ukuya ialloys ezikhethekileyo njenge-nickel-based based, ikunika umbono. I-304L ayijongwanga yodwa. Yinxalenye yespectrum. Inzuzo yayo enkulu yindleko kunye nokufumaneka ngokubanzi ngokuchasene ne-alloys ephezulu ye-nickel. Kodwa imida yayo ichaza indawo yayo.
Umzekelo, xa umxhasi efuna amandla obushushu obuphezulu, sibakhwelisa kude kwi-304L ukuya kuthi gaa ialloys esekwe nickel. Xa befuna ukuxhathisa umhlwa okugqithisileyo ekunciphiseni iiasidi, mhlawumbi lixesha lokuba ialloys esekwe cobalt. I-304L ihleli kuloo ndawo imnandi yokusebenza jikelele kunye nokwenziwa koluhlu olukhulu lwamacandelo emizi-mveliso-izindlu zempompo, imizimba yevalvu, izixhobo zokulungisa ukutya, iihardware zokwakha. Lihashe lomsebenzi.
Kodwa nanjengehashe lomsebenzi, ukulandelela izinto kubalulekile. Sihlawula ingqalelo kwi-chemistry enyibilikayo. Isulfure eninzi kakhulu inokuphucula ukusebenza kodwa yenzakalise uxhathiso ekumdleni. Ulungelelwaniso oluchanekileyo lwe-silicon lunokuphucula ubumanzi bokuphosa. Zizi nkcukacha ze-sub-spec ezahlula ibhetshi enjengebhotolo kwaye ihlala amashumi eminyaka ukusuka kwenye ebangela intloko ebuhlungu ukusuka kusuku lokuqala.
Ukuqukumbela Ngaphandle Kwesaphetha
Ke, hayi, i-304L ayisiyonto nje yorhwebo. Yimathiriyeli umsebenzi wayo wokwenyani uvuliwe (okanye uthintelwe) kwiinkcukacha zenkqubo. Ekupheleni kosuku, impumelelo yecandelo le-304L ixhomekeke kakhulu kwi-Foundry's practice, isakhono se-machinist, kunye neenkcukacha zobunjineli bendalo njengoko zenza kwintlanganiso yekhemistri ye-ASTM A743. Yintsebenziswano phakathi kwezinto kunye nomenzi. Awukwazi ukuyi-odola kwikhathalogu kwaye ulindele ukugqibelela. Kufuneka uqonde ubuntu bayo, utyekelo lwayo, kwaye uhlonele imida yayo. Yiloo nto amashumi amathathu eminyaka yokusakha kunye nomatshini ekufundisayo-ukubona isinyithi, kungekhona nje inani.
