1. Feem ntau Daim Ntawv Thov C37700 (Dawb-Txiav tooj dag)
1.1 Cov kav dej, Piping & HVAC Systems
Cov yeeb nkab fittings: Qhov chaw thov loj tshaj plaws. C37700 yog siv los tsim threaded fittings (lub luj tshib, tees, couplings, unions), pob li qub, rooj vag li qub, thiab kos li qub. Nws cov machinability tso cai rau cov threading meej thiab nruj tolerances, thaum nws nruab nrab corrosion kuj suits potable dej, kub / txias pipelines, thiab HVAC ductwork.
Cov kav dej: Faucet lub cev, valve stems, thiab cartridge Cheebtsam. Cov hmoov txhuas ua cov roj nplua nyeem thaum lub sijhawm ua haujlwm, ua kom cov duab zoo nkauj nrog cov npoo du, thiab cov hlau tsis muaj zog tiv taus hnav los ntawm kev siv dua.
1.2 Automotive Kev Lag Luam
Cav & Kis Cheebtsam: Roj fittings, roj kab txuas, sensor vaj tse, thiab cov iav me me. Lub alloy lub siab machinability txo lub sij hawm ntau lawm voj voog rau siab - ntim qhov chaw, thiab nws cov neeg kho tshuab lub zog (tensile zog: 420-520 MPa) withstands cav vibrations thiab nruab nrab kub.
Hluav taws xob & Electronic Parts: Terminal blocks, connectors, thiab fasteners (screws, txiv ntseej, bolts) rau tsheb wiring harnesses. Nws cov hluav taws xob conductivity (~ 20% IACS) ua tau raws li qis - tam sim no kev xav tau kev sib kis, thiab cov hlau lead txhim kho nti tsim thaum lub sij hawm ua cov khoom me me, qhov tseeb.
1.3 Cov Khoom Siv Hluav Taws Xob & Hluav Taws Xob
Terminal Blocks & Connectors: Siv nyob rau hauv industrial tswj vaj huam sib luag, fais fab faib units (PDUs), thiab cov khoom siv hluav taws xob (xws li TV, computer peripherals). Cov hlau muaj peev xwm ua tau zoo rau hauv cov xov zoo thiab cov kab me me ua rau nws zoo tagnrho rau kev cog lus, siab -cov khoom siv hluav taws xob ceev.
Switchgear & Circuit Breaker Parts: Hu rau cov kev txhawb nqa, lub davhlau ya nyob twg studs, thiab lub tes tsho insulating. Nws tsis yog- cov khoom sib nqus thiab corrosion kuj (rau atmospheric noo noo thiab tshuaj me me) ua kom ntev - lub sij hawm cia siab rau hauv hluav taws xob systems.
1.4 Precision Machined Cheebtsam
Fasteners: Me me screws, ceev, bolts, thiab rivets rau machinery, khoom siv, thiab aerospace auxiliary systems. C37700's machinability tso cai rau kev ua haujlwm siab - nrawm ntawm kev ua kom zoo ib yam, siab - fasteners zoo nrog cov cuab yeej siv tsawg tsawg.
Cov cuab yeej ntsuas & ntsuas: Gauge blocks, valve cores, thiab precision shafts for meters (flow meters, pressure gauges) thiab cov khoom siv kho mob (xws li, kho hniav handpieces). Tight dimensional precision thiab du nto tiav (Ra Tsawg dua los yog sib npaug rau 0.8 μm) yog ua tiav ntawm machining.
1.5 Rooj tog & Kho vajtse
Kho vajtse kho kom zoo nkauj: Drawer rub, txee qhov rooj, hinges, thiab qhov rooj kov. Cov hlau tuaj yeem polished, plated (chrome, npib tsib xee, los yog tooj dag), los yog txhuam kom ua tiav kev zoo nkauj, thaum nws lub zog thiab corrosion kuj ua kom ruaj khov nyob rau hauv qhov chaw sab hauv / sab nraum zoov.
Xauv Cheebtsam: Xauv lub tog raj kheej, pins, thiab springs. Machinability ua rau cov txheej txheem sab hauv, thiab cov hmoov lead lub lubricating nyhuv txo kev sib txhuam ntawm cov khoom txav.
2. Cov Qauv Ua Haujlwm rau C37700
2.1 International Standards
Qhia txog cov tshuaj lom neeg muaj pes tsawg leeg (Cu: 57.0-59.0%, Zn: tshuav nyiaj li cas, Pb: 1.3-2.5%), cov khoom siv kho tshuab (lub zog tensile Ntau dua lossis sib npaug rau 420 MPa, elongation Ntau dua lossis sib npaug li 10% rau cov khoom siv annealed), thiab cov qauv ntsuas (spectrometric tsom xam rau ductility testing), tensile lub zog rau chemical test.
Siv rau ob qho tib si wrought (extruded, kos, forged) thiab cam khwb cia C37700 cov khoom, suav nrog fittings, fasteners, thiab machined Cheebtsam.
Thawj US tus qauv rau C37700. Txhais peb tempers: Annealed (O), Txias-Ua hauj lwm (H02, H04), thiab Stress-Relieved (SR).
Cov kev cai siv tshuab: Rau O temper (annealed ntawm 550-650 degree), tensile zog=420-520 MPa, yield zog Ntau tshaj los yog sib npaug rau 170 MPa, elongation Ntau dua los yog sib npaug rau 15%. Rau H04 temper (txias-ua haujlwm), tensile zog Ntau dua los yog sib npaug rau 520 MPa, yield zog Ntau dua los yog sib npaug rau 415 MPa, elongation Ntau dua lossis sib npaug li 5%.
Npog cov ntaub ntawv khoom: Qws (puab, square, hexagonal), bar (pas, rectangular), thiab forged duab.
2.2 European Standards
Classifies C37700 li "CW614N" (CuZn39Pb3). Qhia txog cov tshuaj muaj pes tsawg leeg (Cu: 57.0-59.0%, Zn: 38.0-40.0%, Pb: 2.0-3.0%) thiab cov khoom siv kho kom haum rau cov tempers sib txawv (piv txwv li, R200: tensile zog 400-500 MPa, elongation Ntau tshaj los yog sib npaug rau 18% ntau dua los yog R500; Ntau tshaj li R500 elongation Ntau dua lossis sib npaug li 5%).
Siv rau pas nrig, bar, thiab hlau siv nyob rau hauv mechanical engineering, hluav taws xob, thiab kav dej siv.
Tshwj xeeb rau C37700 (CW614N) kav dej fittings. Txhais qhov ntev ntev, kev ntsuas siab (txog 16 bar rau dej ntawm 60 degree), thiab cov kev cai tiv thaiv corrosion (dezincification testing per EN ISO 6509).
2.3 Neeg Esxias Standards
Qib sib npaug: C3771. Cov tshuaj muaj pes tsawg leeg: Cu Ntau dua lossis sib npaug li 57.0%, Zn: tshuav nyiaj li cas, Pb: 1.5-2.5%. Mechanical zog: Annealed (O) - tensile zog Ntau dua los yog sib npaug rau 400 MPa, elongation Ntau dua los yog sib npaug li 15%; txias-ua haujlwm (H) - tensile zog Ntau dua lossis sib npaug li 500 MPa, elongation Ntau dua lossis sib npaug li 5%.
Npog pas nrig, bar, thiab forged khoom rau machinery, hluav taws xob, thiab tsheb siv.
Qib sib npaug: HPb59-1. Cov tshuaj muaj pes tsawg leeg: Cu: 57.0-59.0%, Zn: sib npaug, Pb: 0.8-1.9%. Cov khoom siv kho tshuab (GB / T 2059-2020): Tensile zog Ntau dua lossis sib npaug rau 420 MPa, elongation Ntau dua lossis sib npaug li 10% (annealed); tensile zog Ntau dua los yog sib npaug rau 520 MPa, elongation Ntau dua los yog sib npaug li 5% (txias-ua haujlwm).
GB/T 1527-2017:Copper thiab tooj liab alloy seamless raj- Qhia meej txog qhov yuav tsum tau ua rau C37700 (HPb59-1) cov raj siv hauv cov kav dej thiab cov cua sov hloov pauv.
