Sab hauv ntawm ob daim npias thiab dej haus cov kaus poom

7-19 haus dej haus zoo tshaj plaws (1)
Lub npias thiab dej haus tuaj yeem yog ib daim ntawv ntim khoom noj, thiab yuav tsum tsis txhob ntxiv ntau dhau rau tus nqi ntawm nws cov ntsiab lus. Can-makers niaj hnub nrhiav txoj hauv kev los ua lub pob pheej yig dua. Thaum lub peev xwm tau ua nyob rau hauv peb daim: lub cev (los ntawm ib daim ntawv tiaj tus) thiab ob kawg. Tam sim no feem ntau npias thiab dej haus cov kaus poom yog ob-thooj poom. Lub cev yog tsim los ntawm ib daim hlau los ntawm cov txheej txheem hu ua kev kos duab thiab phab ntsa ironing.

Txoj kev tsim kho no tso cai rau ntau cov hlau nyias nyias siv thiab tuaj yeem muaj lub zog siab tshaj plaws tsuas yog thaum ntim cov dej haus carbonated thiab kaw. Spin-necking txuag hlau los ntawm kev txo txoj kab uas hla ntawm lub caj dab. Nyob nruab nrab ntawm xyoo 1970 thiab 1990, npias thiab dej ntim ntim tau los ua 25% sib dua. Hauv Tebchaws Meskas, qhov twg txhuas yog pheej yig dua, feem ntau cov npias thiab dej haus cov kaus poom yog tsim los ntawm cov hlau ntawd. Hauv Tebchaws Europe, tinplate feem ntau pheej yig dua, thiab ntau lub kaus poom yog ua los ntawm qhov no. Niaj hnub nimno npias thiab dej haus tinplate muaj cov ntsiab lus tin tsawg ntawm qhov chaw, lub luag haujlwm tseem ceeb ntawm cov tin yog cosmetic thiab lubricating (hauv cov txheej txheem kos duab). Yog li yuav tsum muaj lacquer uas muaj kev tiv thaiv zoo heev, yuav tsum tau siv ntawm qhov hnyav ntawm lub tsho loj (6-12 µm, nyob ntawm hom hlau).

Can-making yog kev lag luam tsuas yog tias cov kaus poom tuaj yeem ua tau sai heev. Qee 800-1000 cov kaus poom ib feeb yuav raug tsim los ntawm ib txheej txheej, nrog lub cev thiab xaus coated nyias. Lub cev rau npias thiab dej haus cov kaus poom yog lacquered tom qab ua thiab degreased. Daim ntawv thov ceev yog ua tiav los ntawm luv luv bursts ntawm airless tshuaj tsuag los ntawm ib tug lance positioned opposite qhov chaw ntawm qhib kawg ntawm kab rov tav tau. Lub lance tej zaum yuav zoo li qub los yog yuav muab tso rau hauv lub kaus poom thiab muab tshem tawm. Lub peev xwm yog tuav nyob rau hauv ib tug chuck thiab rotated sai sai thaum lub sij hawm txau kom tau lub feem ntau uniform txheej tau. Txheej viscosities yuav tsum tsawg heev, thiab cov khib nyiab txog 25-30%. Cov duab yog yooj yim, tab sis interiors yog kho los ntawm convected cua kub, nyob rau hauv lub sij hawm nyob ib ncig ntawm 3 min ntawm 200 ° C.

Carbonated dej qab zib yog acidic. Kev tiv thaiv corrosion los ntawm cov khoom zoo li no yog muab los ntawm cov txheej txheem xws li epoxy-amino resin lossis epoxy-phenolic resin systems. Npias yog qhov tsis tshua muaj siab ua rau lub peev xwm, tab sis nws qhov tsw yuav lwj tau yooj yim los ntawm cov hlau khaws los ntawm lub kaus poom lossis los ntawm cov ntaub ntawv uas tau muab rho tawm los ntawm cov lacquer, uas nws kuj yuav tsum muaj cov khoom zoo sib xws hauv sab hauv.

Feem ntau ntawm cov txheej txheem no tau ua tiav tiav rau hauv cov dej-dej colloidally dispersed los yog emulsion polymer systems, tshwj xeeb tshaj yog nyob rau hauv yooj yim substrate los tiv thaiv, txhuas. Cov dej-raws li txheej txheej tau txo tag nrho cov nqi thiab txo qis cov kuab tshuaj uas yuav tsum tau muab pov tseg tom qab cov kub kub kom tsis txhob muaj kuab paug. Cov tshuab ua tiav feem ntau yog ua raws li epoxy-acrylic copolymer nrog amino lossis phenolic crosslinkers.

Tseem muaj kev lag luam txaus siab nyob rau hauv electrodeposition ntawm dej-raws li lacquers hauv npias thiab dej haus cov kaus poom. Cov txheej txheem zoo li no zam qhov yuav tsum tau siv rau hauv ob lub tsho loj, thiab muaj peev xwm muab cov txheej txheem tsis muaj qhov tsis zoo tiv thaiv cov ntsiab lus ntawm lub peev xwm ntawm qhov hnyav ntawm cov yeeb yaj kiab qhuav. Hauv cov txheej txheem dej los ntawm cov tshuaj tsuag, cov ntsiab lus hnyav qis dua 10-15% tab tom nrhiav.


Post lub sij hawm: Dec-09-2022