Blackening kev kho mob ntawm hluav taws xob cua sov

Thaum siv hluav taws xob cua sov, vim yog huab cua thiab ib puag ncig, cov khoom siv dub yuav tshwm sim rau ntawm lawv qhov chaw, uas yuav tsum tau kho blackening. Blackening kev kho mob yog qhov ua tau zoo ntawm kev kho cua sov rau cov khoom siv hlau xws li stainless hlau. Tom qab kev kho mob, yuav muaj ib txheej ntawm oxide zaj duab xis rau ntawm qhov chaw kom ua tiav lub hom phiaj ntawm kev tiv thaiv corrosion thiab tiv thaiv xeb. Tom qab kev kho cua sov, qhov hnav tsis kam thiab hardness ntawm lub rhaub dej yuav raug txhim kho, thiab nws yuav tsis cuam tshuam rau cov khoom hauv lub tshuab hluav taws xob.
Cov kauj ruam hauv qab no yog ib txoj hauv kev yooj yim rau kev kho qhov chaw blackening ntawm hluav taws xob cua sov nyob rau hauv cov pa ua haujlwm:
1. Ua ntej, ntxuav qhov chaw ntawm lub raj hlau thiab ua kom huv si;
2. Qhov thib ob yog kev kho degreasing saum npoo, uas tuaj yeem tso cov raj hlau tso rau hauv cov tshuaj degreasing. Tus nqi pH ntawm cov tshuaj degreasing yog nyob ib ncig ntawm 13, thiab lub sijhawm tsis pub tsawg tshaj li ib nrab teev. Tom qab degreasing, yaug nrog dej huv.
3. Tom ntej no, kev ntxuav cov kua qaub tuaj yeem ua tiav, nrog tus nqi pH txog 3 thiab lub sijhawm ua haujlwm tsis pub dhau 10 feeb. Tom qab ntxuav cov kua qaub, yaug nrog dej huv;
4. Blackening kev kho mob: Lub concentration ntawm lub pas dej ua ke yog nyob nruab nrab ntawm 2-4 pH, thiab lub sij hawm kho yog li ntawm 10 feeb. Tom qab blackening, nws yog huv si;
5. Tom qab ntawd, qhuav thiab roj;