Ua ntej, Dongguan cov hlau ntxuam cov lag luam yog cov yaug ciav hlau, vim hais tias txoj kev no tseem ceeb heev, qhov kev thov yog ceev faj thiab ceev faj, yuav muaj seem seem nyob rau hauv tus txheej txheem ntawm cov xov hlau ntawm qhov tsos. Cov txheej txheem ntawm kev yaug ncauj yog los ntxuav cov ntxhiab tsw ntxhiab.
Qhov thib ob, lub hau ntswj thaum lub cua sov txheej txheem los mus ua kom pom tseeb, txwv tsis pub nws yuav ua rau muaj oxidation me ntsis hauv cov roj quench.
Qhov peb, mus rau qhov pom ntawm cov cuab yeej ua lub siab yuav tshwm sim phosphide dawb seem, tshab txhais (thawj kis) thaum lub lag luam tsis tuaj yeem ua tib zoo saib.
Plaub, yog hais tias lub Dongguan qhov chaw tsim hluav taws xob pom tau pom tias qhov pom ntawm qhov chaw thiab cov khoom muaj ib qhov phenomenon tshwm sim thiab kev siv tshuaj lom neeg, nws yog clarified tias cov hauj lwm ua hauv cov kev kho ua kom sov tsis tag meej, thiab pom ntawm alkaline residues tsis tag tshem tawm.
V. Cov rusting ntawm tus txheej txheem hauv lub rinsing yuav tshwm sim, thiab cov dej siv rau yaug yuav tsum tau nquag hloov.
Rau, Dongguan screw manufacturers tswvcuab, uas qhia ntau rust scene qhia txog kev siv cov roj quenching roj rau ntev dhau lawm, yuav tsum tau koom nrog roj lossis hloov tshiab. Nws yuav ua rau lub qhov rooj txee txiav kom poob thiab cuam tshuam kev ruaj ntseg ntawm cov tswv