Vim tias cov hnab yas feem ntau siv nyob rau hauv lub neej niaj hnub, cov yas khi tuaj yeem khi cov khoom ua ke sai sai thiab muaj zog binding quab yuam, yog li cov neeg ntseeg hauv kev sib raug zoo thiab yooj yim. Nyob rau hauv xyoo tas los no, kev lag luam yas pluaj tau tsim sai heev kom tau raws li cov neeg siv khoom xav tau. Txhawm rau ua kom cov pluaj yas muaj ntau yam qauv thiab kev ua haujlwm, tab sis vim muaj kev cuam tshuam ntawm qee qhov chaw tshwj xeeb rau kev siv txhua hnub, lub pluaj yas tsis tuaj yeem ua haujlwm ib txwm, xws li jamming, softening, thiab lwm yam. Yog li, peb yuav tsum xyuam xim rau qhov chaw ib puag ncig. rau thaum siv cov hlua yas?
General yas ties muaj qhov kub thiab txias. Cov kev sib raug zoo sib xws tuaj yeem tiv taus - 30 txog 80, thiab qee qhov kev sib txuas yas tuaj yeem tiv taus - 40. C txog 150 C. Feem ntau, qee cov yas ties tuaj yeem tiv taus qhov kub ntawm - 20C thiab 75c. Vim tias qhov sib txawv no yog tshwm sim los ntawm cov khoom siv thiab cov txheej txheem tsim khoom ntawm cov yas ties, cov yas ties kuj xav tau ib puag ncig. Xav txog kev siv cov hlua yas uas tuaj yeem tiv taus qhov kev siv ib puag ncig. Nyob rau tib lub sijhawm, xyuam xim rau kev siv cov nylon ties thiab yas ties hauv qee qhov chaw corrosive. Cov yas ties muaj qee yam kev tiv thaiv corrosion, tab sis ua tib zoo saib tias qhov kev tiv thaiv corrosion ntawm no yog hais txog alkali tsis kam. Nyob rau tib lub sijhawm, thaum siv cov yas sib txuas, nws yuav tsum tau muab sau tseg tias kev tiv thaiv corrosion ntawm cov yas sib txuas rau oxidants tsis muaj zog, yog li lawv tsim nyog rau qee cov yas yas. Kev saib xyuas tshwj xeeb yuav tsum tau them rau kev siv ib puag ncig lossis ib puag ncig nrog oxidants nyob ze, thiab qee cov kua qaub lossis oxidant resistant yas ties yuav tsum kho.
Feem ntau hais lus, cov yas sib txuas yog cov ntub dej, yog li yog tias koj siv cov hlua yas hauv qhov chaw ntub dej, nws yog qhov zoo tshaj plaws los siv lawv li ntawm 12 teev tom qab tshem tawm ntawm lub pob. Kev siv cov yas khi. Kev pabcuam lub neej ntawm cov yas sib txuas yog nyob ntawm ib puag ncig. Cov hlua yas siv nyob rau hauv chav tsev kub tuaj yeem ncav cuag 10 xyoo. Txawm hais tias lub neej kev pabcuam raug txwv los ntawm ib puag ncig, kev pabcuam lub neej yog ntau tshaj 5 xyoos. Cov khoom siv hluav taws xob ruaj khov thiab pheej yig yog siv rau ntau qhov chaw. Thaum cov neeg siv cov kev sib txuas kub kub, cov kev sib txuas feem ntau tawg, uas ua rau cov neeg siv tsis meej pem ntau. Ua ntej, ua cov ntaub ntawv thiab kev siv tshuab. Thaum cov khoom siv rau kev kub-kub khi yog granulated thiab deformed ob zaug, qhov kev ua tau zoo txo qis, cov qauv molecular kuj puas lawm, nws yog ib qho yooj yim rau tawg nyob rau hauv tus txheej txheem ntawm kev siv, thiab cov txheej txheem technology kuj cuam tshuam. Yog li ntawd, cov neeg siv yuav tsum tau them nyiaj tshwj xeeb rau cov yam ntxwv no thaum xaiv cov khoom.
Qhov thib ob, kev siv ib puag ncig. Cov neeg siv yuav tsum tau xyuam xim rau cov xwm txheej ib puag ncig thaum siv txoj hlua khi, vim hais tias ib puag ncig ib puag ncig qhuav heev los yog qhov kub thiab txias, uas yuav ua rau nws tawg. Yog tias qhov tshwj xeeb tsis raug, qhov kub-kub khi yuav tawg thaum siv. Piv txwv li, yog tias tus neeg siv xaiv cov khi me me thaum kho cov khoom, cov khi yuav tawg thaum siv.
