Yuav ua li cas yog tias lub tshuab hluav taws xob taws tau tsaus?

- Jun 20, 2018-

    Thaum siv lub tshuab hluav taws xob, siv lub zog ntawm huab cua thiab ib puag ncig, ib yam khoom dub yuav tshwm sim rau ntawm qhov hluav taws xob roj. Txhob ntshai thaum lub sij hawm no. Muab cov khoom nram qab no pov tseg:


(1) Lub plhaub ntawm lub raj hlau yog xub ntxuav thiab ntxuav kom huv;

(2) Kev kho deg degering: Cov txheej txheem no tuaj yeem muab tus hlau txhuam hauv cov kua degreasing. Qhov nqi ntawm cov tshuaj tsis haum (degreasing) yog nyob ntawm ib ncig ntawm 13 thiab lub sijhawm tsis tsawg tshaj li ib nrab. Tom qab siv degreasing, ntxuav dej.

(3) Cov nram qab no tuaj yeem noj zaub mov, qhov nqi pauv ntawm cov kua txiv hmab txiv ntoo yog kwv yees 3, lub sijhawm ua haujlwm tsis ntev tshaj li 10 feeb, thiab dej ntxuav tau tom qab nqa dej.

(4) Qhov kawg ntawm tus txheej txheem, kev kho cov txheej txheem dub yog siv nrog tus nqi pH ntawm 2-4 ntawm da dej tov tshuaj thiab kho lub sijhawm 10 feeb. Tom qab blackening, nws yuav tsum tau ntxuav, thiab thaum kawg qhuav thiab oiled