ASTM B36yog ib qho tseem ceeb ntawm cov tooj dag uas tau siv dav hauv kev tsim khoom thiab engineering sectors. Feem ntau ua los ntawm zinc, tooj liab, thiab tin,Brass alloy 272muab ntau yam txiaj ntsig zoo rau cov neeg tsim khoom lag luam. Nws muaj superior tiv thaiv corrosion thiab puas, yog heev malleable rau ntau yam kev siv thiab cov txheej txheem, thiab nws lub zog tseem nyob rau hauv lub sij hawm. Nyob rau sab saum toj ntawm qhov ntawd, Brass 272 yog qhov pheej yig dua li lwm cov hlau alloys. Qhov no ua rau nws zoo tagnrho rau kev lag luam nrhiav txoj hauv kev los txo cov nqi thaum tseem txhawb nqa cov qauv zoo. Yog li ntawd, nws tsis xav tsis thoob vim li cas tooj dag 272 tau dhau los ua cov khoom tseem ceeb hauv kev tsim cov khoom ntawm txhua daim duab thiab qhov ntau thiab tsawg hauv ntau qhov kev lag luam thoob ntiaj teb.
tooj 272yog alpha-beta tooj dag uas muaj 72% tooj liab thiab 28% zinc. Nws tseem muaj cov lej ntawm cov hlau lead (<0.2%), iron (<0.3%), arsenic (<0.01%), manganese (<0.3%), and phosphorus (<0.04%). Together these elements give it superior malleability compared to other alloys with similar compositions, such as 70/30 brass or 60/40 brass.
| Cov ntsiab lus | ||||
|---|---|---|---|---|
| Cu(1) | Pb | Zn | Fe | |
| (1) Cu + Sum of Named Elements 99.7% min. | ||||
| Min (%) | 62.0 | |||
| Max (%) | 65.0 | 0.07 | Rem | 0.07 |
ASTM B36 tooj dagmuaj kev tiv thaiv corrosion zoo heev thaum raug rau ntau hom corrosive ib puag ncig xws li dej ntsev, sulfuric acid, hydrochloric acid, thiab lwm yam, ua rau nws yog ib qho khoom siv zoo tshaj plaws rau ntau daim ntawv thov uas muaj kev tiv thaiv corrosion yog qhov tseem ceeb. Cov hlau kuj tseem muaj hluav taws xob zoo, ua rau nws muaj txiaj ntsig zoo rau kev siv hluav taws xob thaiv.
C27200 tooj dagyog ib qho alloy ntawm tooj liab thiab zinc nrog lub cev zoo heev. Nws muaj cov hluav taws xob hluav taws xob siab, tiv thaiv corrosion, txias formability, thiab nruab nrab rau ib qho xim daj me ntsis. Tshwj xeeb, nws muab kev ua haujlwm zoo tshaj plaws ntawm kev ua kom sov, tso cai rau nws siv rau ntau yam kev siv thoob plaws ntau qhov kev lag luam. Los ntawm kev sib txuas cov khoom ntawm tooj liab thiab zinc ua ke rau hauv ib qho alloy, Brass 272 muab ob qho tib si lub zog thiab kav ntev thaum tseem tshuav nqi. Nws txoj kev ua haujlwm ua rau nws muaj peev xwm ua tiav cov qauv tsim sib txawv hauv cov khoom uas tau txais txiaj ntsig los ntawm nws cov yam ntxwv zoo dua. Yog li ntawd, engineers thiab designers feem ntau qhia cov alloy no rau cov kev siv nyuaj uas yuav tsum tau superior kev ua tau zoo ua ke nrog kev them taus.
Cov khoom siv dag zog ntawm tooj dag 272 nyob ntawm qhov kev xaiv kho cua sov siv thaum ua haujlwm. Cov kev kho cua sov uas feem ntau siv yog kev ntxhov siab (annealing) thiab kev laus (aging). Kev ntxhov siab ua rau cov khoom siv ntau dua, thaum laus nce hardness thiab lub zog tsis muaj kev cuam tshuam ductility lossis malleability ntau dhau. Lub hnub nyoog hardening tuaj yeem ua tiav ntawm qhov kub ntawm 400 degree F txog 600 degree F (204 degree txog 315 degree). Machining yog ua tau ntawm Brass 272 nrog cov cuab yeej txheem, tab sis kev txiav ceev yuav tsum tau ceev kom qis kom tsis txhob ua kom lub ntsej muag tiav lossis ua rau hnav ntau dhau ntawm cov cuab yeej lawv tus kheej.
| Daim ntawv | Kub | Temper Code | Tensile zog (ksi) |
YS-0.5% Ext (ksi) |
Elongation (%) |
Rockwell F nplai | Tshooj Loj (hauv) |
|---|---|---|---|---|---|---|---|
| * Ntsuas ntawm chav tsev kub, 68 degree F (20 degree). | |||||||
| Tube | Hard Drawn | H80 | 74 Typ | 55 Typ | 10 Typ | 80 Typ | 0.065 |
| Nominal Grain Loj 0.025 mm | OS 025 | 56 Typ | 23 Typ | 50 Typ | 82 Typ | 0.065 | |
Hlau C27200vuam yog ib hom kev vuam tshwj xeeb uas yuav tsum muaj cov txheej txheem tshwj xeeb thiab kev ceev faj txog kev nyab xeeb. Nws tshwm sim thaum ob qho khoom sib koom ua ke los ntawm kev sib tsoo thiab tsim ib daim ntawv cog lus los tsim ib chav tsev. Cov txheej txheem ntawm tooj dag 272 welding koom nrog kev siv lub tshuab electrode, uas yog rhuab mus rau qhov kub siab heev thiab siv rau thaj tsam ntawm kev sib txuas. Qhov cua sov no yuav ua rau cov khoom ua molten, cia nws sib xyaw ua ke nrog cov khoom zoo sib xws nyob ze. Daim ntawv cog lus tsim nyob rau hauv cov txheej txheem no yog ntev-ntev dua li lwm hom vuam thiab yuav tsum tau muaj kev saib xyuas tsawg dua. Brass 272 welding kuj tseem tuaj yeem ua tus nqi ntau dua hauv qee qhov kev siv uas yuav tsum tau muaj zog thiab ua haujlwm ntev, ua rau nws yog qhov kev xaiv zoo nkauj rau cov neeg uas xav tau kev txhim khu kev qha.
tooj 272feem ntau yog siv rau hauv cov kav dej fixtures vim nws siab corrosion kuj thiab malleability, uas tso cai rau kom yooj yim installation nrog tsawg heev uas yuav muaj feem cuam tshuam los yog tawg nyob rau hauv cov kav dej lawv tus kheej. Nws kuj yog siv nyob rau hauv daim ntawv thov hluav taws xob thaiv vim nws muaj hluav taws xob zoo conductivity thiab tsis corrode yooj yim. Thaum kawg, nws yog feem ntau ua hauj lwm nyob rau hauv automotive engineering tej yaam num vim nws siab zog-rau-qhov hnyav piv, ua rau nws zoo tagnrho rau qhov chaw uas yuav tsum tau muaj zog thiab lightness.
Brass yog ib qho alloy ntawm tooj liab, zinc, thiab tin uas muaj npe nrov rau nws cov corrosion kuj. Qhov no ua rau nws yog ib qho khoom siv zoo tshaj plaws rau ntau daim ntawv thov kev lag luam, tshwj xeeb tshaj yog nyob rau hauv kev lag luam xws li kav dej, kev siv tshuab, thiab cov khoom siv hluav taws xob. Txawm hais tias raug rau qhov chaw hnyav,Brass 272 UNS C27200withstands hnav thiab tsim kua muag impressively zoo. Nws superior mechanical zog thiab yooj yim ntawm machining ua rau nws cov khoom siv tau zoo heev. Tsis tas li ntawd, nws cov khoom tsis sib nqus yog qhov txaus nyiam rau ntau tus neeg siv. Tag nrho cov nta no ntxiv los ua Brass 272 ib qho khoom tshwj xeeb nrog kev siv ntau yam.
272 Lojyog ib tug hlau alloy paub rau nws zoo malleability thiab lub zog. Tsis tas li ntawd, tooj dag muaj cov khoom siv hluav taws xob zoo heev, tshwj xeeb tshaj yog thaum kub txog 272 degrees Celsius. Qhov no ua rau nws zoo tagnrho rau siv hauv ntau daim ntawv thov uas muaj qhov kub siab dua, xws li cov khoom siv hauv chav ua noj, cov khoom siv hauv nkoj, kev thauj mus los, thiab lwm yam. Brass 'zoo kawg nkaus malleability tso cai rau cov khoom kom yooj yim ua daim ntawv, thaum lub siab kub siab tiv thaiv lawv los ntawm kev tsis sib haum xeeb thaum siv ntawm cov kub. Tsis tas li ntawd, nws yog tus nqi pheej yig dua li lwm cov khoom sib tw, ua rau nws muaj kev xaiv zoo dua rau ntau yam lag luam.
Kev kho cua sov txheej txheem rauC27200 272 toojNws yog ib qho tseem ceeb kom ua tiav cov khoom siv kho kom zoo. Cov txheej txheem no suav nrog nce cov hlau mus txog 880 degrees Celsius, tso cai rau nws nyob ntawm qhov kub no rau 20 feeb, thiab tom qab ntawd txias nws rov qab. Los ntawm kev ua li ntawd, nws tsim cov khoom tawv tawv kawg uas tiv taus ntau dua rau kev cuam tshuam thiab deformation. Thaum tshav kub kub-kho tooj dag 272 tuaj yeem ua rau muaj kev siv ntau dua nrog kev ua kom ruaj khov, muab cov neeg siv cov hlau no nrog ntau lub sijhawm. Cov txiaj ntsig ntawm kev kho cua sov tooj dag yog qhov tsis txaus ntseeg, ua cov txheej txheem zoo li no rau txhua tus neeg tab tom nrhiav cov khoom zoo tshaj plaws.
Precision machining nrogtooj dag 272 Alloyyog txheej txheem nyuaj thiab muag heev, ua rau nws zoo tagnrho rau ntau daim ntawv thov. Hom machining no tso cai rau cov ntsiab lus tsis sib xws thiab nruj tolerances uas tuaj yeem nyuaj rau kev ua tiav nrog lwm cov hlau. Cov tooj dag nws tus kheej yog malleable thaum tseem muaj cov khoom ua haujlwm siab corrosion. Nws tau ua pov thawj nws tus kheej los ua cov khoom siv zoo tshaj plaws hauv kev tsim cov khoom precision hauv ntau qhov chaw lag luam. Nrog rau qhov raug thiab ua haujlwm ntev, tooj dag 272 machining tso cai rau cov tuam txhab ua tiav lawv cov neeg siv khoom xav tau yam tsis muaj kev cuam tshuam rau cov qauv zoo.
