Brass yog binary aloy muaj li luam tawm ntawm tooj liab thiab zinc uas tau tsim rau xyoo txhiab thiab muaj nuj nqis, nyuaj, thiab ntxim nyiam.
Jindalai (Shandong) Steel Group Co., Ltd. Muaj ntau yam khoom tooj dag thiab ntau npaum li cas kom tau raws li qhov kev xav tau ntawm txhua qhov haujlwm.
1. Khoom
● Alloy Hom: Binary
Cov ntsiab lus: Tooj & zinc
Wensity: 8.3-8.7 G / cm3
● Melting taw tes: 1652-1724 ° F (900-940 ° C)
● Moh lub hardness: 3-4
2. Cov yam ntxwv
Cov teeb meem tseeb ntawm brasses sib txawv nyob ntawm cov muaj pes tsawg ntawm cov tooj dag xwb, tshwj xeeb yog tus tooj liab-zinc piv. Feem ntau, txawm li cas los xij, txhua brasses yog muaj nuj nqis rau lawv cov ntaub ntawv lossis cov khoom siv uas hlau tau tsim mus rau cov khoom lag luam xav tau thiab cov ntaub ntawv siab thaum khaws lub zog siab.
Thaum muaj qhov sib txawv ntawm brasses nrog cov ntsiab lus siab thiab qis qis dua yog suav tias yog suav tias yog suav tias yog suav tias yog suav tias yog cov brassesSmalldlddld (qis zinc brasses ntau dua li). Vim nws qhov qis melting point, tooj dag kuj tseem tuaj yeem raug pov tau yooj yim. Txawm li cas los xij, rau cov ntawv thov ua pov cov ntawv thov, ib cov ntsiab lus zoo tshaj plaws yog feem ntau nyiam.
Brasses nrog cov ntsiab lus qis qis zinc tuaj yeem yooj yim txias ua haujlwm, welded thiab brazed. Ib cov ntsiab lus tooj liab tseem ceeb tseem tso cai rau cov hlau ua cov txheej txheem tiv thaiv oxide uas muaj cov khoom siv uas ua rau cov khoom siv uas nthuav dav thiab huab cua.
Cov hlau muaj ob qho tib si zoo ua kom sov sov thiab hluav taws xob conduction (nws cov hluav taws xob conduction tuaj yeem yog los ntawm 234% uas los ntawm kev tiv thaiv ntshiab. Zoo li tooj liab, nws cov khoom bacteriostatic tau ua rau nws siv hauv chav dej txhim kho thiab cov chaw kho mob.
Brass tau suav tias yog ib qho kev sib txhuam qis thiab tsis sib nqus ntawm cov khoom siv tau ua rau nws muaj ntau yam 'tooj dag cov twj paj nruas. Cov kws ua yeeb yam thiab kws tshawb fawb muaj nqis tus hlau cov khoom zoo nkauj, raws li nws tuaj yeem tsim nyob rau hauv ntau cov xim, los ntawm tob liab rau Golden Daj.
3. Kev thov
Brass cov khoom muaj txiaj ntsig zoo thiab cuam tshuam yooj yim ntawm cov khoom lag luam tau ua nws ib qho ntawm cov feem ntau siv alloys. Tso ua ke cov npe tag nrho ntawm txhua tus brass'applications yuav yog ib lub tswv yim ua haujlwm, tab sis kom tau catalorize ib qho kev faib tawm ntawm tus tooj dag siv:
● Dawb Txiav Brass (piv txwv li C38500 lossis 60/40 tooj dag):
● Ceev, bolts, xov seem
● Terminals
Dhia Jet
● Cov kais dej
Txhaj tshuaj
4. Keeb Kwm
Tooj liab-zinc alloys tau tsim tawm thaum ntxov xyoo 5 BC hauv Suav teb thiab tau siv dav hauv Central Asia los ntawm 2nd caug xyoo BC. Cov khoom zoo nkauj no, txawm li cas los xij, tuaj yeem raug xa mus rau 'ntuj alloys,' raws li tsis muaj pov thawj pom tau cov neeg tsim lub tooj liab asloy asloyed tooj liab thiab zinc. Hloov chaw, nws yog qhov yuav zoo li cov alloys tau smelted los ntawm zinc-nplua nuj tooj liab Ores, ua cov hlau liab-zoo li hlau zoo li hlau.
Greek thiab Roman cov ntaub ntawv hais qhia tias kev txhob txwm ua rau muaj tooj dag, muaj cov npe hu ua hluav taws xob zoo ib yam li muaj cov txheej txheem ua kom zoo ib yam, uas yog cov khoom siv cemented, uas tooj liab tau yaj nyob rau hauv a Crucible nrog hauv av Smithsonite (lossis calamine) ore.
Ntawm qhov kub thiab txias, zinc tam sim no hloov mus rau vapor thiab permeates lub tooj liab, yog li ua tus tshiab tooj dag nrog 17-30% zinc cov ntsiab lus. Cov qauv no ntawm brass kev tsim khoom tau siv rau ze li 2000 xyoo kom txog thaum ntxov 19th caug xyoo. Tsis ntev tom qab Loos tau pom tias yuav ua li cas tsim cov tooj dag, cov alloy tau siv rau kev siv nyiaj rau cov qaib ntxhw niaj hnub. Qhov no sai tau kis thoob plaws hauv lub tebchaws Roman.
5. Hom
'Tooj dag' yog cov lus dav dav uas hais txog ntau yam ntawm tooj liab-zinc alloys. Qhov tseeb, muaj ntau tshaj 60 sib txawv hom tooj dag teev los ntawm en (European qauv) cov qauv. Cov alloys tuaj yeem muaj ntau yam sib txawv raws li cov khoom siv uas yuav tsum muaj rau ib daim ntawv thov tshwj xeeb.
6. Ntau Lawm
Tooj dag yog feem ntau cov khoom siv los ntawm tooj liab scrap thiab zinc ecsots. Tshaj tawm tooj liab yog xaiv raws nws cov impurities, raws li qee yam ntxiv cov ntsiab lus tseem ceeb hauv kev txiav txim kom tsim tau cov cim ntawm tooj dag.
Vim tias zinc pib boil thiab vaporizes ntawm 1665 ° F (907 ° F (908 ° F (1083 ° yuav tsum tau ua ntej. Thaum melted, zinc yog ntxiv ntawm ib qho kev sib piv tsim nyog rau cov cim tooj daj tau tsim. Thaum qee qhov nyiaj tau los tseem ua rau Sinc ploj mus rau Vaporization.
Txij ntawm no, muaj lwm cov hlau ntxiv, xws li txhuas, txhuas, silicon lossis arsenic, yog ntxiv rau qhov sib xyaw kom tsim nyog los tsim cov kev xav tau. Thaum lub Molten Alloy yog npaj txhij, nws yog nchuav rau hauv cov pwm uas nws ua rau cov pob zeb loj lossis cov bills. Billets - feem ntau ntawm cov alpha-beta tooj - tuaj yeem ua ncaj qha rau hauv cov xov hlau, cov hlab ntawm cov hlau rhuab los ntawm kev tuag, lossis kub forging.
Yog tias tsis extruded los yog forged, cov nyiaj ntsuab yog tom qab ntawd rov ua dua tshiab thiab pub dhau los ntawm cov menyuam hlau (ib txheej txheem hu ua kub dov). Qhov tshwm sim yog slabs nrog ib thickness ntawm tsawg dua li ib nrab nti (<13mm). Tom qab txias, pas nrig yog tom qab ntawd noj dhau los ntawm lub tshuab milling, lossis cov tawv taub hau, uas txiav ib qho hlau nplaum nyias los ntawm cov hlau txhawm rau tshem tawm saum npoo sib xws thiab oxide.
Nyob rau hauv cov huab cua huab cua los tiv thaiv oxidization, lub alloy yog rhuab los ntawm cov khoom siv txias dua 0.1 Cov qauv sib sau sab hauv ntawm cov tooj daj ntawm cov tooj daj, ua rau muaj zog thiab nyuaj dua li ntawm qhov xav tau tuab lossis tawv tawv ua tiav.
Thaum kawg, cov ntawv tau pom thiab sheared los tsim qhov dav thiab ntev yuav tsum tau. Txhua nplooj ntawv, cam khwb cia, forged, thiab extruded tooj dag cov ntaub ntawv yog muab cov tshuaj diam duab thiab sulfuricic thiab sulfuric acid, kom tshem cov tooj dub oxide nplai thiab tarnish.
Jindala cov khoom lag luam tooj rau khoom thiab coils hauv tuab ntawm 0.05 txog 50 hli, thiab hauv annealed, peb hlis nyuaj, thiab tag nrho cov tawv tawv. Lwm lub tempers thiab alloys muaj nyob rau. Xa koj qhov kev nug thiab peb yuav zoo siab los sab laj koj tshaj lij.
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Lub Sijhawm Post: Dec-19-2022