Lub qhov rooj hluav taws kub yog cov khoom siv hluav taws kub uas muaj cov hluav taws kub tsis muaj kev sib tsoo, yog ntau cov tseev kom muaj rau cov chaw tua hluav taws uas nyiam.
Siv cov khoom siv hluav taws xob ib zaug, cov khoom siv hluav taws xob, sib tsoo, sib tsoo, sib tsoo, muab cov roj hmab kom nthuav dav thiab cov yeeb yaj kiab Ntim.
Qhov rooj tsim qauv txheem: Raws li cov thev naus laus zis ua tiav cov qauv siv, kev siv cov khoom siv kub, cov nplooj kub}. Pickling Derusting (dej) tshuaj, txheej, txheej (rau lub tshuab hluav taws xob (rau lub tshuab hluav taws xob txheej, tshuab Yas rau 205 degree siab melting yas hmoov), yas ua zaj duab xis ntim.
Cov qauv hauv tebchaws ntawm lub qhov rooj hluav taws loj ntawm qhov sib luag muaj tsawg dua 10 hli, ntawm lub qhov rooj ntawm ob sab ntawm tus kiv cua thiab lub qhov rooj yuav tsum tsis loj tshaj 4mm.Tom qab lub qhov rooj hluav taws tau nruab thiab kaw, qhov sib txawv yuav tsum tsis txhob muaj kev sib tw ntawm lub qhov rooj hluav taws, thiab nws tsis yooj yim kom muaj kev cuam tshuam nws txoj haujlwm ntawm kev txwv tsis pub muaj hluav taws.
Yog tias koj xav paub ntau ntxiv, pls mus saib kuv lub vev xaib:
