Ku bikwata ku kunyogoza kwa... payipu eziyooyoota ekyuma ekitali kizimbulukuse mu nkola y’okufulumya, ebyetaago eby’ekikugu ebikozesebwa wano biri waggulu nnyo.Okugeza, singa okufuga ebbugumu si kulungi, ekivaamu okuzaala 316 okunyigirizibwa kw’ebbugumu n’okunyigirizibwa kw’enzimba, payipu y’ekyuma eyinza okwatika oba okukyukakyuka.Ekiddako, Hangao Tech (SEKO Machinery) egenda kwanjula mu bujjuvu okumanya ku kukola payipu ez’ekyuma ekitali kizimbulukuse eziyooyoota okunyogoza:
Olw’okuddamu okugabanya okusika omuguwa okw’omunda mu kiseera ky’okulongoosa, ttanka y’ekyuma ekitali kizimbulukuse eky’okwolesa ejja kukyusibwakyusibwa, era obutuufu bw’okulongoosa tebusobola kukakasibwa.Okugatta ku ekyo, okukwata ebitundu ebinene kitera okuvaako situleesi esigaddewo.Tubu zino zonna ez’okuyooyoota ez’ekyuma ekitali kizimbulukuse zirina okuyimiriza okukendeeza ku situleesi oluvannyuma lw’okukola ebyuma ebikalu.Okuggyawo ‘internal stress annealing’ kitera kuba kya kuyooyoota ttanka ya kyuma ekitali kizimbulukuse.Ku 500-550°C, emabegako yakozesebwa ku bbugumu erya bulijjo okumala eddakiika 50 ku 100, essaawa 3 ku 5 oba okusingawo (okusinziira ku muwendo gw’ebikoomi ebyassibwa) okukuuma okusika omuguwa okw’omunda okumala ebbanga eddene.Kiyitibwa okukaddiwa okw’obutonde, naye enkola eno ewanvuwa nnyo era ebiseera ebisinga tekozesebwa.
Tubu y’okuyooyoota ey’ekyuma ekitali kizimbulukuse bw’etonnya, kungulu n’ebitundu ebimu ebigonvu bitera okuvaamu ekizimbe ekyeru, ekikaluba, ekyeru ekikutuse.N’olwekyo, ttanka eza bulijjo ez’okuyooyoota ekyuma ekitali kizimbulukuse zirina okufukibwa oba okuteekebwa ku mutindo okumalawo obulema mu kusuula.Ebbugumu ly’okubumbulukuka oba ery’okuzza obuggya (normalization temperature) okusinga liri wakati wa 850 ne 950°C.Ebbugumu likuumibwa okumala essaawa 1-2, seminti asengejebwa mu graphite ne austenite (omutendera ogusooka ogw’okukola graphitization).Ffe online continuous bright annealing furnace esobola okukuyamba.Tekyetaaga kusooka kubuguma, esobola okutuuka ku bbugumu erituufu ery’okubuguma mu sikonda 10 oluvannyuma lw’okutandika.
Ekirala, eyungiddwa ku nkola ya PLC, osobola okulaba butereevu data mu kiseera ekituufu, okulondoola mu kiseera ekituufu puleesa y’empewo, okutambula kw’amazzi, ebbugumu ly’okukola, sipiidi.Mu kiseera ekiddako eky’okunyogoza ekikoomi, seminti ow’okubiri ne seminti ow’ekika kya eutectoid bijja kusengekebwa mu grafayiti (kwe kugamba, omutendera ogw’okubiri ogw’okukola grafiti).Mu kusembayo, perlite eyongerwa mu matrix ya ferrite oba ferrite okukendeeza ku bugumu n’amaanyi g’okusuula.Okugatta ku ekyo, enkola ya seminti eri 850-950°C, naye seminti mu nkola y’okussa omutindo, eyinza okukendeeza ku budde bw’okunyogoza obukaluba bwa ttanka y’ekyuma ekitali kizimbulukuse eky’okwolesa, nayo esobola okufuna amaanyi agamu n’obugumu bwa matrix ya pearlite awamu .
