Kawm Txog Cov Khoom Thiab Kev Siv Cov Hlau Tooj Liab

Jindalai (Shandong) Steel Group Co., Ltd. muaj ntau yam khoom siv tooj dag hauv qhov ntau thiab tsawg kom tau raws li qhov xav tau ntawm txhua qhov project.
1. Cov Khoom
● Hom Alloy: Binary
● Cov Ntsiab Lus: Tooj Liab & Zinc
● Qhov Ceev: 8.3-8.7 g/cm3
● Lub Sijhawm Yaj: 1652-1724 °F (900-940 °C)
● Moh's Hardness: 3-4

2. Cov yam ntxwv
Cov yam ntxwv tseeb ntawm cov tooj dag sib txawv nyob ntawm seb cov khoom sib xyaw ntawm cov tooj dag sib xyaw ua ke, tshwj xeeb tshaj yog qhov sib piv ntawm tooj liab-zinc. Txawm li cas los xij, feem ntau, txhua cov tooj dag muaj nqis rau lawv qhov kev siv tshuab lossis qhov yooj yim uas cov hlau tuaj yeem tsim rau hauv cov duab thiab cov duab xav tau thaum tseem khaws lub zog siab.

Txawm hais tias muaj qhov sib txawv ntawm cov tooj dag uas muaj cov zinc ntau thiab tsawg, txhua cov tooj dag raug suav hais tias yog malleable thiab ductile (cov tooj dag zinc tsawg dua). Vim nws qhov melting point qis, tooj dag kuj tuaj yeem raug cam khwb cia yooj yim. Txawm li cas los xij, rau kev siv casting, cov zinc ntau feem ntau yog qhov zoo dua.

Cov tooj dag uas muaj cov zinc tsawg dua tuaj yeem ua haujlwm txias, vuam thiab brazed tau yooj yim. Cov tooj liab uas muaj cov ntsiab lus ntau kuj tso cai rau cov hlau los tsim ib txheej oxide tiv thaiv (patina) ntawm nws qhov chaw uas tiv thaiv kev xeb ntxiv, ib qho khoom muaj nqis hauv cov ntawv thov uas ua rau cov hlau raug dej noo thiab huab cua.

Cov hlau muaj ob qho tib si cua sov thiab hluav taws xob conductivity zoo (nws cov hluav taws xob conductivity tuaj yeem yog los ntawm 23% txog 44% ntawm cov tooj liab ntshiab), thiab nws yog hnav thiab resistant rau hluav taws xob. Ib yam li tooj liab, nws cov khoom bacteriostatic tau ua rau nws siv rau hauv chav dej khoom siv thiab cov chaw kho mob.

Tooj dag yog suav hais tias yog ib qho hlau uas tsis muaj kev sib txhuam thiab tsis muaj hlau nplaum, thaum nws cov khoom siv suab tau ua rau nws siv rau hauv ntau yam twj paj nruag 'tooj dag'. Cov kws ua yeeb yam thiab cov kws kes duab vajtse suav tias cov hlau no zoo nkauj, vim nws tuaj yeem tsim tau ntau yam xim, txij li xim liab tob mus rau daj kub.

3. Cov ntawv thov
Cov khoom muaj nqis ntawm tooj dag thiab yooj yim tsim tau ua rau nws yog ib qho ntawm cov hlau sib xyaw uas siv dav tshaj plaws. Kev sau cov npe tag nrho ntawm txhua yam kev siv tooj dag yuav yog ib txoj haujlwm loj heev, tab sis kom tau txais lub tswv yim ntawm kev lag luam thiab cov hom khoom uas tooj dag pom peb tuaj yeem faib thiab sau qee qhov kev siv kawg raws li qib ntawm tooj dag siv:
● Tooj dag txiav dawb (piv txwv li C38500 lossis 60/40 tooj dag):
● Cov txiv ntoo, cov ntsia hlau, cov khoom siv uas muaj xov
● Cov Chaw Nres Tsheb
● Dav hlau
● Cov kais dej
● Cov tshuaj txhaj

4. Keeb Kwm
Cov hlau tooj liab-zinc tau tsim tawm thaum ntxov li xyoo pua 5th BC hauv Suav teb thiab tau siv dav hauv nruab nrab Asia los ntawm xyoo pua 2nd thiab 3rd BC. Txawm li cas los xij, cov hlau dai kom zoo nkauj no tuaj yeem hu ua 'cov hlau ntuj,' vim tias tsis muaj pov thawj tias lawv cov neeg tsim khoom tau siv tooj liab thiab zinc. Hloov chaw, nws zoo li cov hlau tau raug smelted los ntawm cov hlau tooj liab nplua nuj zinc, tsim cov hlau zoo li tooj dag.

Cov ntaub ntawv Greek thiab Roman qhia tias kev tsim cov hlau sib xyaw zoo ib yam li tooj dag niaj hnub no, siv tooj liab thiab cov hlau nplua nuj zinc oxide hu ua calamine, tau tshwm sim nyob ib puag ncig xyoo pua 1st BC. Calamine tooj dag tau tsim los ntawm kev siv cov txheej txheem cementation, uas tooj liab tau yaj hauv lub crucible nrog av smithsonite (lossis calamine) ore.

Thaum kub heev, zinc uas muaj nyob rau hauv cov hlau no yuav hloov mus ua pa thiab nkag mus rau hauv tooj liab, yog li ntawd thiaj li tsim tau tooj dag ntshiab nrog 17-30% zinc. Txoj kev tsim tooj dag no tau siv rau yuav luag 2000 xyoo txog rau thaum pib ntawm xyoo pua 19th. Tsis ntev tom qab cov neeg Loos tau tshawb pom yuav ua li cas los tsim tooj dag, cov hlau sib xyaw tau siv rau kev ua npib hauv thaj chaw ntawm Turkey niaj hnub no. Qhov no sai sai kis mus thoob plaws Roman Empire.

5. Hom
'Tooj dag' yog ib lo lus dav dav uas hais txog ntau yam tooj liab-zinc alloys. Qhov tseeb, muaj ntau tshaj 60 hom tooj dag sib txawv uas tau teev tseg los ntawm EN (European Norm) Standards. Cov alloys no tuaj yeem muaj ntau yam sib txawv sib xyaw nyob ntawm cov yam ntxwv uas xav tau rau ib daim ntawv thov tshwj xeeb.

6. Kev Tsim Khoom
Feem ntau cov tooj dag yog tsim los ntawm cov tooj liab seem thiab cov zinc ingots. Cov tooj liab seem raug xaiv raws li nws cov khoom tsis huv, vim tias xav tau qee yam ntxiv kom tsim tau qib tooj dag raws li qhov xav tau.
Vim tias zinc pib npau thiab ua pa ntawm 1665°F (907°C), qis dua qhov kub ntawm tooj liab uas yaj 1981° F (1083°C), yuav tsum yaj tooj ua ntej. Thaum yaj lawm, zinc raug ntxiv rau ntawm qhov sib piv uas tsim nyog rau qib tooj dag uas tsim tawm. Txawm hais tias tseem muaj qee qhov kev tso cai rau zinc poob rau kev ua pa.

Thaum lub sijhawm no, lwm yam hlau ntxiv, xws li txhuas, txhuas, silicon lossis arsenic, raug ntxiv rau hauv qhov sib tov kom tsim cov hlau xav tau. Thaum cov hlau yaj tiav lawm, nws raug nchuav rau hauv cov pwm uas nws khov rau hauv cov pob loj lossis cov billets. Cov billets - feem ntau yog alpha-beta tooj dag - tuaj yeem ua tiav ncaj qha rau hauv cov xov hlau, cov kav dej, thiab cov raj ntawm kev kub extrusion, uas cuam tshuam nrog kev thawb cov hlau kub los ntawm lub pwm, lossis kub forging.

Yog tias tsis tau extruded lossis forged, cov billets ces rov ua kom sov thiab pub los ntawm cov hlau rollers (ib qho txheej txheem hu ua kub dov). Qhov tshwm sim yog cov slabs nrog cov tuab tsawg dua ib nrab nti (<13mm). Tom qab txias, cov tooj dag ces pub los ntawm lub tshuab milling, lossis scalper, uas txiav ib txheej nyias ntawm cov hlau kom tshem tawm cov qhov tsis zoo ntawm qhov chaw casting thiab oxide.

Nyob rau hauv ib qho chaw muaj pa roj kom tiv thaiv kev oxidation, cov hlau alloy raug cua sov thiab dov dua, ib qho txheej txheem hu ua annealing ua ntej nws raug dov dua ntawm qhov kub txias dua (txias dov) rau cov ntawv ntawm kwv yees li 0.1 "(2.5 hli) tuab. Cov txheej txheem dov txias ua rau cov qauv noob sab hauv ntawm cov tooj dag deforms, ua rau cov hlau muaj zog dua thiab tawv dua. Cov kauj ruam no tuaj yeem rov ua dua kom txog thaum tau txais qhov tuab lossis qhov nyuaj raws li xav tau.

Thaum kawg, cov ntawv raug txiav thiab txiav kom tau qhov dav thiab ntev uas xav tau. Txhua daim ntawv, cam khwb cia, forged, thiab extruded tooj dag cov ntaub ntawv raug muab tso rau hauv chav dej tshuaj, feem ntau, ib qho ua los ntawm hydrochloric thiab sulfuric acid, kom tshem tawm cov xim dub tooj liab oxide nplai thiab tarnish.

Jindalai cov ntawv tooj dag thiab cov kauj tooj dag muaj qhov tuab ntawm 0.05 txog 50 hli, thiab hauv annealed, quarter hard, half hard, thiab full hard tempers. Lwm cov tempers thiab alloys kuj muaj thiab. Xa koj cov lus nug thiab peb yuav zoo siab los sab laj nrog koj.

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