54. Cov txheej txheem ua haujlwm kom qhuav yog dab tsi?

Muaj ob txoj hauv kev rau cov kuab tshuaj ntawm cov kav hlau thaum lub sijhawm ua haujlwm ziab, ob qho tib si hauv tsev thiab txawv teb chaws: txoj kev dov thiab txoj kev pub mis. Cov txheej txheem ziab kom qhuav txawv me ntsis ntawm cov txheej txheem no, raws li cov lus qhia hauv qab no: (1) Txoj Kev Rolling: Ua ntej, hnyav- cov kav hlau coated yog npaj kom huv si ntawm lub tshuab pub noj rau pem hauv ntej ntawm lub tshuab ziab khaub ncaws. Raws li lub tshuab galvanizing ceev thiab xav txog qhov kub thiab txias lub sij hawm ziab, cov kav dej tau muab tso rau hauv cov khoom ntawm peb, tsib, los yog ntau tshaj ntawm cov khib nyiab hauv qhov cub. Cov kav dej ces dov maj mam raws cov khib nyiab mus rau qhov chaw ntawm lub qhov cub, ntsib cov kav dej uas tau qhuav dhau los tsis muaj sib tshooj (los yog so ib ntus ntawm rotating nres hooks). Thaum cov kuab tshuaj concentration ntawm cov kav dej ntawm lub cub tawg qhov chaw nres nkoj ua tau raws li tus qauv yuav tsum tau, qhov nres hooks tau tig los coj cov kav dej mus rau lub tshuab galvanizing pub saw nuv, xyuas kom txhua cov yeeb nkab xa mus rau galvanizing sequentially.
Thaum ua haujlwm, xyuas kom qhov kawg ntawm qhov tsis sib xws ntawm cov yeeb nkab steel yeeb nkab ua ke ua ntej nkag mus rau hauv lub tshuab ziab khaub ncaws, thiab qhov kev sib koom ua ke kawg no yuav tsum yog ib qho uas tau muab tso rau hauv zinc da dej.
(2) Cov txheej txheem kev thauj mus los ntawm cov saw hlau ua ntej npaj cov yeeb nkab steel coated nrog hnyav ntawm cov khoom noj khoom haus nyob rau hauv pem hauv ntej ntawm lub tshuab ziab khaub ncaws kom zoo ib yam, ces manually los yog mechanically muab lawv mus rau cov saw rau kev thauj mus los rau hauv lub tshuab ziab khaub ncaws. Thaum lub sijhawm ua haujlwm, kev saib xyuas yuav tsum tau them nyiaj kom ntseeg tau tias qhov kev sib tw ntawm qhov kawg ntawm cov yeeb nkab steel tsis sib xws.