Optimization ntawm lub zog siab hnav-resistant phaj technology
Cov txheej txheem sib txawv thiab cov tswv yim tsim khoom tuaj yeem tsim cov qib sib txawv ntawm cov phaj siab hnav-tiv taus. Cov haujlwm metallurgical ntawm cov txheej txheem no tau muab piv. Ib theem siab ntawm metallurgical thev naus laus zis thiab lub sijhawm ntev ntawm kev ua tau zoo yog lub hauv paus rau kev ua tiav cov peev txheej txhim khu kev lag luam thiab txhim kho cov nqi, thiab cov kws tshawb fawb yuav tsum kwv yees thiab ntsuas tus nqi ntawm txhua tus txheej txheem raws li qhov xwm txheej tshwj xeeb ntawm cov nroj tsuag.
Feem ntau, vim muaj qhov sib txawv me me hauv cov khoom siv hlau, cov tshuaj muaj pes tsawg leeg ntawm microalloy high-strength steel thiab hydrogen-crack resistant hnav daim hlau (HIC resistant hnav daim hlau) yuav tsum muaj siab precision, yog li ntawd.
Kev sib cais hauv nruab nrab yog txo qis thiab cov qoob loo loj ntawm microstructure yog tswj hwm los xyuas kom zoo ductility. Nyob rau hauv cov nqe lus ntawm tshuaj muaj pes tsawg leeg, muaj ntau yam uas yuav tsum tau xav txog:
Tsawg carbon cov ntsiab lus, tshwj xeeb tshaj yog cov ntsiab lus sulfur;
② High-precision hloov ntawm manganese cov ntsiab lus;
③ Kev siv cov ntsiab lus alloying (Cr, Ni, Mb, Cu, Nb, Ti, thiab lwm yam).
Kev txhim kho ntawm cov qib steel no tau pib nyob rau nruab nrab -1960s, thiab kev txhim kho kev ua haujlwm txuas ntxiv niaj hnub no vim tias cov neeg siv khoom xav tau ntau ntxiv rau cov khoom siv kho tshuab thiab tshuaj lom neeg ntawm qib steel. Cov neeg tsim khoom ntawm daim hlau hnav-tiv taus sim kho lawv cov tshuaj muaj pes tsawg leeg kom ua tau raws li cov kev xav tau no, xws li txo cov ntsiab lus carbon, hloov pauv microalloying thiab optimizing dov txheej txheem.
