Cov kais dej ua ntej tshwm sim hauv Tebchaws Europe hauv 16th caug xyoo. Txhawm rau kom tsis txhob poob dej thiab daws cov khoom siv tsis txaus, Tus kais dej tau tsim. Thawj pab kais kais tau pov rau hauv tooj liab, thiab tom qab nws tau hloov pauv mus pheej yig dua tooj dag.
Cov kais dej ua ntej tshwm sim hauv Tebchaws Europe hauv 16th caug xyoo. Txhawm rau kom tsis txhob poob dej thiab daws cov khoom siv tsis txaus, Tus kais dej tau tsim. Thawj pab kais kais tau pov rau hauv tooj liab, thiab tom qab nws tau hloov pauv mus pheej yig dua tooj dag. Nrum hlau cov kais dej yog ib zaug tag nrho cov kev npau taws vim lawv cov Craftshiption yooj yim thiab tus nqi qis. Nyob rau hauv tshwj xeeb, Cov gall-fashioned kauv-Lifting cov kais dej tau pom ib zaug, Tab sis hom kais dej no tsis yog yuav tsum tau tig ntau zaus thaum siv los tso qee qhov nqi ntawm cov kais dej, Nws yog ib qho yooj yim los ua kom muaj kev pov tseg tsis tsim nyog, thiab vim hais tias lub taub hau rauv gasket yog ib qho yooj yim rau “sib tsoo”, Tus kais dej yog qhov ua kom dhau los siv sijhawm ntev, Thiab nws kuj tseem yuav ua rau qee qhov nyiaj ntawm cov dej khib nyiab. Ntxiv rau, Lub cam khwb cia hlau kais yog yooj yim rau xeb, Thiab nws yog ib qho yooj yim kom ua rau cov dej ua tau zoo. Tsis huv thaum muaj kev kis tau, Nws tau raug txwv tsis pub los ntawm kev muag los ntawm lub xeev.
Nkag mus rau lub xyoo pua 21st, Cov neeg siv khoom lag luam tau hloov pauv hloov pauv. Cov Khoom Siv Nyiaj Ntau tau yug rau Lub Ntiaj Teb Thoob Ntiaj Teb Txoj Kev Ua Neej. Ntau tus neeg tau txais kev pab tau pib nrhiav lub neej thiab tshaj tawm lawv tus kheej, vam tias yuav tsim lawv tus kheej cov chaw nyob zoo meej. Yav dhau los, Thaum ntau tsev neeg yuav cov kais dej, lub tswv yim ntawm tsuas yog xav tias "tsuas yog siv nws" pib ua kom tawg. Cov khoom lag luam nrog cov qauv zam, Tshiab kev ua haujlwm, thiab cov neeg thiab saj tau dhau los ua ntau dua thiab nrov dua. Tshwj xeeb nrog kev txhim kho ntawm lub neej zoo, cov neeg them ntau dua rau kev noj qab haus huv, Kev tiv thaiv ib puag ncig thiab lwm yam teeb meem.
Vim tias tooj liab tau yooj yim rau cov txheej txheem thiab pov, feem ntau ntawm cov kais dej ntawm kev ua lag luam yog ua los ntawm tooj liab. Tab sis tooj liab muaj cov hmoov txhuas, thiab npib tsib xee thiab chromium electroplated nyob rau saum npoo ntawm tooj liab kais yuav poob tawm tom qab lub sijhawm, thiab Patina yuav loj tuaj. Lead thiab Patina yuav ua rau cov kais dej thiab ua kom cov neeg muaj mob nkeeg. Ntxiv rau, Lub electropated chromium txheej rau saum npoo ntawm tooj liab kais yog ib txheej tshuaj nplaum qaub. Nyob ntawm qhov zoo thiab tuab ntawm electroplating, Nws yuav yog oxidized thiab tev tawm. Qhov nrawm dua yuav plam nws cov npoo npoo thiab pitting nyob rau hauv 3-5 xyoo, thiab cov txheej txheem kawg electropling thiab nthuav tawm cov xeb tooj liab yuav cuam tshuam rau cov tsos thiab yuav tsum tau hloov. Nyob rau hauv cov txheej txheem ntawm kev rov ua dua, Tooj liab smelting thiab electroplating yuav tsim cov dej lom zem heev thiab roj, uas yuav ua kom muaj kuab paug zoo rau ib puag ncig.
Nrog rau kev txhim kho kev tshawb fawb thiab thev naus laus zis thiab kev tsim khoom siv tshuab, Nws muaj peev xwm ua kom cov kais dej uas siv cov hlau stainless. Stainless hlau yog ib qho kev lees paub thoob ntiaj teb uas tau lees paub cov khoom noj qab haus huv uas tuaj yeem cog tau hauv tib neeg lub cev. Nws tsis muaj txhuas, yog acid-resistant, alkali-resistant, corrosion-resistant, thiab tsis tso cov tshuaj phem. Yog li ntawd, kev siv ntawm steel cov kais dej yuav tsis ua kom huv cov kais dej thiab tuaj yeem ua kom tib neeg kev noj qab haus huv thiab kev nyiam huv. Ntxiv mus, Qhov saum npoo ntawm cov kais dej stainless tsis tas yuav tsum muaj electropated, Kev tsim khoom lag luam yuav tsis ua rau muaj kuab paug rau ib puag ncig, Thiab yuav tsis tas yuav hloov vim yog tev ntawm cov txheej txheem hluav taws xob, uas ruaj khov thiab zam kev nkim khoom ntawm cov khoom siv. Stainless hlau kais tsis yog tsuas yog kev noj qab haus huv txoj moo zoo rau cov neeg siv khoom thoob ntiaj teb, Tab sis nws qhov zoo tshaj plaws kev tiv thaiv kom zoo dua kuj yuav rov qab los ntawm cov kais dej uas tsis muaj roj ntawm cov roj ntsha plab zom mov.
