1. Qhov zoo ntawm C22000 (Kev Lag Luam Bronze / 90-10 Bronze)
① Zoo heev Mechanical Strength & Durability
Tensile zog: 310–550 MPa (annealed mus rau tag nrho -nqus temper), ho siab dua cov ntshiab tooj liab thiab ntau tooj dag.
Fatigue Resistance: Kev tiv thaiv zoo tshaj plaws rau kev ntxhov siab thiab hnav, ua rau nws haum rau siab - daim ntawv thov voj voog (xws li, springs, gears, bearings).
Hardness: Annealed temper (60–80 HB) muab qhov sib npaug zoo ntawm softness thiab durability; Kev ua haujlwm txias tuaj yeem ua kom tawv tawv mus rau 140-170 HB (tag nrho- nyuaj), txhim kho hnav tsis kam.
② Zoo tshaj Corrosion Resistance
Atmospheric Corrosion: Forms a dense, adherent patina (copper oxide layer) that protects the underlying metal from humidity, rain, and industrial pollutants-ensuring long-term durability in outdoor and architectural applications.
Aqueous Corrosion: Resistant dej tshiab, dej hiav txwv, thiab dej brackish corrosion; outperforms brasses nyob rau hauv marine ib puag ncig los ntawm resisting pitting, crevice corrosion, thiab dezincification.
Tshuaj Corrosion: Ua rau cov kua qaub me me (piv txwv li, acetic acid, citric acid), alkalis, thiab cov kuab tshuaj organic, ua rau nws tsim nyog rau kev ua tshuaj lom neeg thiab zaub mov -hu rau daim ntawv thov (thaum ntawv pov thawj).
③ Superior Wear & Friction Properties
Tsawg coefficient ntawm kev sib txhuam thiab kev ua haujlwm siab rau cov nplaum hnav, abrasive hnav, thiab galling (kev qaug dab peg ntawm zawv zawg qhov chaw).
Ua tau zoo nyob rau hauv qhuav los yog lubricated zawv zawg daim ntaub ntawv (xws li, bushings, bearings, valve stems) yam tsis tas yuav tsum tau saib xyuas.
④ Zoo heev Formability & Fabrication Versatility
Ua haujlwm txias: Cov khoom siv zoo heev hauv kev kub ntxhov, ua kom khoov, stamping, kos duab, thiab dov rau hauv cov duab nyuaj (xws li, nplooj ntawv, xov hlau, raj).
Machineability: Yooj yim yooj yim rau tshuab nrog cov cuab yeej txheem (carbide lossis siab - steel ceev); ua kom huv, raug txiav thaum siv cov kua txiav tsim nyog.
Weldability: Weldable ntawm brazing, soldering, thiab roj welding (arc welding yog ua tau tab sis yuav tsum muaj kev txawj ntse kom tsis txhob muaj qoob loo loj hlob); haum rau assembling welded los yog brazed Cheebtsam.
Castability: tuaj yeem yog xuab zeb- nrum, tuag- nrum, los yog centrifugally cam khwb cia rau hauv ze -net- cov khoom seem nrog zoo seem stability.
⑤ Zoo Thermal & Hluav taws xob conductivity
Thermal conductivity: ~ 50–60 W / (m·K) (20 degree), haum rau cov khoom siv hluav taws xob, cov dab dej kub, thiab cov khoom siv thermal tswj.
Hluav taws xob conductivity: ~ 20–25% IACS (International Annealed Copper Standard), txaus rau kev siv hluav taws xob uas yuav tsum tau muaj qhov sib npaug ntawm cov conductivity thiab lub zog (xws li, hluav taws xob tiv tauj, terminals).
⑥ Aesthetic Appeal & Biocompatibility
Cov nplua nuj golden- xim av uas tsim cov patina uas xav tau nyob rau lub sijhawm, ua rau nws zoo tagnrho rau kev tsim vaj tsev, cov khoom zoo nkauj, thiab cov hniav nyiaj hniav kub.
Tsawg toxicity thiab biocompatibility (thaum txhuas{0}}dawb) tso cai rau siv hauv cov zaub mov-cov khoom siv sib cuag (xws li, li qub, fittings) thiab cov cuab yeej siv kho mob (xws li, cov cuab yeej phais- thaum ua raws li ISO 10993).
⑦ Dav Kub Adaptability
Ua haujlwm ntseeg tau los ntawm -200℃txog 200℃(lub sij hawm luv luv txog li 300 degree), khaws cov khoom siv kho tshuab thiab corrosion kuj nyob rau hauv ob qho tib si qis thiab nruab nrab kub ib puag ncig.
2. Qhov tsis zoo ntawm C22000
① Tus nqi siab dua piv rau tooj dag
Tin (Sn) yog kim tshaj zinc (Zn), thawj alloying keeb nyob rau hauv tooj dag. Raws li qhov tshwm sim, C22000 feem ntau yog 20-40% tus nqi ntau dua li cov tooj dag (xws li, C26000, C27000), ua rau nws raug nqi tsawg dua -zoo rau siab - ntim, qis- cov ntawv thov raug nqi.
② Inferior Machinability vs. Leaded Brasses
Thaum lub tshuab ua haujlwm nruab nrab, C22000 tsis muaj cov hlau lead (ib cov roj nplua nyeem hauv dawb- txiav tooj dag zoo li C36000). Qhov no ua rau cov cuab yeej hnav ntau dua, kev txiav qeeb qeeb, thiab cov nqi machining nce ntxiv rau qhov nyuaj lossis siab - qhov tseeb.
③ Tsawg hluav taws xob & Thermal conductivity dua tooj liab ntshiab
Conductivity (20-25% IACS) yog qis dua tooj liab ntshiab (98-100% IACS) thiab electrolytic tawv pitch tooj liab (C11000). Nws tsis haum rau siab - kev siv hluav taws xob ua haujlwm (xws li, fais fab cables, siab -busbars tam sim no) qhov siab tshaj plaws conductivity yog qhov tseem ceeb.
④ Kev raug rau "Tin Kab Tsuag" ntawm qhov kub thiab txias
Hauv qab no -10℃, tin hauv C22000 tuaj yeem hloov pauv theem (los ntawm - tin mus rau - tin), uas ua rau cov khoom tawg yooj yim hu ua "tin pest." Qhov no ua rau muaj kev puas tsuaj loj nyob rau hauv ib puag ncig cryogenic (qis dua -20 degree), txwv tsis pub siv hauv cov ntawv thov kub (xws li, aerospace cryogenic systems).
⑤ Txo cov kav dej tom qab ua haujlwm txias
Thaum annealed C22000 yog ductile heev, txias ua hauj lwm (xws li, dov, kos duab) ho txo ductility thiab nce brittleness. Re-annealing yog yuav tsum tau rov qab formability, ntxiv sij hawm thiab nqi rau cov txheej txheem tsim.
⑥ Tsis zoo Weldability ntawm Arc Vuam
Arc vuam (xws li SMAW, GMAW) yog qhov nyuaj vim tin lub siab vapor siab, uas ua rau porosity, grain loj hlob, thiab txo weld zog. Brazing los yog soldering yog nyiam, txwv nws siv nyob rau hauv daim ntawv thov yuav tsum siab -kev ncaj ncees arc-welded pob qij txha.
⑦ Muaj kev cuam tshuam rau Corrosion hauv Strong Acids & Chloride-Ntiaj Teb Ib puag ncig
Thaum tiv taus cov tshuaj me me, C22000 yog qhov yooj yim rau corrosion hauv cov kua qaub uas muaj zog (piv txwv li, hydrochloric acid, sulfuric acid) thiab cov tshuaj chloride siab heev (xws li cov dej khib nyiab hauv kev lag luam). Nws kuj tseem yuav raug kev txom nyem los ntawm pitting corrosion nyob rau hauv cov dej hiav txwv stagnation nrog cov tshuaj chloride siab.
⑧ Siab ceev dua tooj dag
Qhov ntom ntom (8.8 g / cm³) siab dua li cov tooj dag feem ntau (8.4–8.6 g / cm³), ua rau C22000 tsis haum rau qhov hnyav- cov ntaub ntawv rhiab heev (piv txwv li, cov khoom siv tsheb, cov khoom siv hauv aerospace) qhov twg cov khoom siv hnyav yog qhov tseem ceeb.
⑨ Tsis Muaj Cov Ntawv Loj lossis Cov Ntawv Tshwj Xeeb
Piv rau tooj dag thiab tooj liab ntshiab, C22000 tsis tshua muaj nyob rau hauv cov kab loj loj (xws li, daim hlau tuab, loj- txoj kab uas hla) lossis cov ntawv tshwj xeeb (piv txwv li, ultra- nyias strips). Lub sij hawm xa tuaj rau kev xaj xaj yuav ntev dua, ua rau lub sijhawm ua haujlwm.
