Tsev

1, vim tias lub tshuaj ntsiav khoob muaj cov yam ntxwv ntawm cov dej tsawg dhau, yooj yim tawg, ntau dhau yooj yim ua rau mos muag deformation, yog li cov dej ntsiab lus ntawm lub Hoobkas tshuaj ntsiav khoob yuav tsum tau tswj hwm ntawm 12.5-17.5%;

2. Cov thawv uas muaj cov tshuaj ntsiav yuav tsum muab tso rau ntawm cov txee, deb ntawm qhov rais thiab cov kav dej kom nyob rau hauv qhov chaw txias thiab cua nkag, thiab zam kom tsis txhob muaj hnub ci thiab nyob ze rau qhov kub;

3, tsis tuaj yeem muab tso rau ntawm qhov yuav thiab siab;

4. Lub thawv ntim khoom yuav tsum kaw kom ruaj ua ntej siv. Yog tias nws tau qhib lawm, thov ua kom huv si, txwv tsis pub nws yuav yooj yim ua rau muaj kab mob sib kis.

5. Qhov kub ntawm cov khoom muag yuav tsum khaws cia rau ntawm 15-25 ℃;

Qhov av noo ntawm cov av noo yog tswj hwm ntawm 35-65%;

6, tsis tuaj yeem khaws cia rau hauv qhov kub thiab txias thiab av noo, lossis nws yuav mos vim muaj cua sov lo thiab deformation, kuj tsis tuaj yeem muab tso rau hauv qhov kub qis dhau lossis qhuav dhau, txwv tsis pub lub tshuaj ntsiav yooj yim los tsim cov xwm txheej brittle thiab fragile;