Dab tsi yog cov qhab nia ntawm cov tooj liab ntshiab

1. Cov qhabnias ntawm cov tooj liab ntshiab yog dab tsi?

Ntshiab tooj liab (tseem hu ua "unalloyed tooj liab") yog cais los ntawm thoob ntiaj teb cov qauv raws li purity, oxygen cov ntsiab lus, thiab impurity theem. Hauv qab no yog cov qib siv dav tshaj plaws thoob plaws cov qauv loj (ASTM rau Asmeskas, GB rau Tuam Tshoj, DIN rau lub teb chaws Yelemees, thiab JIS rau Nyiv), nrog rau cov ntsiab lus tseem ceeb:

Txuj	Qib Qib	Purity (Cu Cov ntsiab lus)	Ntsiab nta & Sau ntawv
ASTM B152 (US)	C11000 (OFHC)	Ntau dua lossis sib npaug li 99.99%	Oxygen-Free High Conductivity (OFHC) tooj liab; tsawg kawg nkaus oxygen (<0.001%); ideal for electrical/thermal applications (e.g., transformers, vacuum systems).
	C10200	Ntau dua lossis sib npaug li 99.95%	Oxygen-cov kabmob tooj liab; cov pa oxygen ntau dua (<0.05%); cost-effective for general industrial use (pipes, sheets).
	C12200	Ntau dua lossis sib npaug li 99.90%	Deoxidized tooj liab (phosphorus{0}}deoxidized); oxygen tsawg (<0.001%); suitable for welding/brazing (plumbing fittings, heat exchangers).
GB/T 5231 (CN)	T1	Ntau dua lossis sib npaug li 99.95%	High-purity ntshiab tooj liab; tsawg impurities; siv nyob rau hauv precision hluav taws xob Cheebtsam.
	T2	Ntau dua lossis sib npaug li 99.90%	Qib feem ntau; balanced purity thiab nqi; dav siv nyob rau hauv kev lag luam (hlau, cables, kav).
	T3	Ntau dua lossis sib npaug li 99.70%	Tsawg purity; siab dua impurity kam rau ua; rau cov uas tsis yog{0}} cov ntawv thov tseem ceeb (cov khoom siv dav dav, cov khoom zoo nkauj).
	TU 1/TU2	Ntau dua lossis sib npaug 99.99% (TU1) / Ntau dua lossis sib npaug 99.95% (TU2)	Oxygen-dawb tooj liab; TU1 yog ultra- siab purity (rau semiconductors, aerospace); TU2 rau siab -kev ua haujlwm hluav taws xob.
DIN 17666 (DE)	Cu-ETP (CW004A)	Ntau dua lossis sib npaug li 99.90%	Electrolytic tawv-pitch tooj liab; sib npaug rau ASTM C10200; general- hom phiaj qib.
	Cu-OF (CW008A)	Ntau dua lossis sib npaug li 99.99%	Oxygen-dawb tooj liab; sib npaug rau ASTM C11000; rau siab -kev siv hluav taws xob.
JIS H3100 (JP)	C1100	Ntau dua lossis sib npaug li 99.93%	Oxygen-cov kabmob tooj liab; sib npaug rau ASTM C10200 / GB T2; dav siv nyob rau hauv Nyiv.
	C1020	Ntau dua lossis sib npaug li 99.95%	High-purity oxygen-cov kabmob tooj liab; rau precision Cheebtsam.

2. Cov xim ntawm cov tooj liab ntshiab yog dab tsi?

Ntshiab tooj liab nthuav tawm cov yam ntxwv xim sib txawv uas hloov me ntsis nrog qhov xwm txheej ntawm qhov chaw thiab ib puag ncig raug:

Fresh/POLISHED Nto: Lub ci ci, ci ntsa iab liab -txiv kab ntxwv (feem ntau piav raws li "tooj liab liab" lossis "txiv kab ntxwv-liab"). Qhov no yog cov xim iconic txuam nrog cov khoom siv tooj liab dawb zoo li cov kav dej tooj liab lossis cov xov hluav taws xob.

Tarnished Nto: Thaum lub sij hawm, cov tooj liab ntshiab reacts nrog oxygen, noo noo, thiab carbon dioxide nyob rau hauv cov huab cua los ua ib tug nyias txheej.patina ua(Copper carbonate hydroxide, Cu₂(OH)₂CO₃). Cov patina no maj mam hloov cov xim los ntawm reddish-txiv kab ntxwv mus rau tsaus xim av, ces mus rau ib tug yam ntxwv greenish-xiav (feem ntau hu ua "verdigris").

Thaum tshav kub kub-Kho saum npoo: Thaum tshav kub kub, ntshiab tooj liab tig tsaus liab ntawm ~ 300℃, ces liab liab -liab xim ntawm qhov kub thiab txias (xws li, thaum annealing los yog forging) ua ntej melting ntawm ~ 1085℃.

Lus Cim: Cov xim zoo ib yam thoob plaws qib tooj liab ntshiab (piv txwv li, T2, C11000) vim tias qib purity (Ntau dua lossis sib npaug rau 99.3%) yog siab txaus kom tsis txhob muaj xim cuam tshuam los ntawm impurities.

3. Dab tsi yog qhov tseem ceeb ntawm kev siv tooj liab dawb?

Ntshiab tooj liab qhov zoo tshaj plaws -zoo heev hluav taws xob conductivity, superior thermal conductivity, siab ductility, thiab zoo corrosion kuj-ua kom nws tseem ceeb hauv ntau qhov kev lag luam. Cov ntawv thov tseem ceeb suav nrog:

1. Kev lag luam hluav taws xob & hluav taws xob (Daim ntawv thov loj tshaj)

Fais fab kis: High-voltage fais fab cables, overhead conductors, busbars (siv nyob rau hauv fais fab nroj tsuag, substations, thiab industrial chaw).

Cov khoom siv hluav taws xob: Circuit Court boards (PCB kab), transformer windings, motor windings, thiab connectors (vim tsis tshua muaj hluav taws xob tsis kam thiab kub dissipation).

Kev sib txuas lus: Coaxial cables, fiber optic cable shielding, thiab cov khoom siv sib txuas lus.

2. Thermal Management Systems

Thaum tshav kub kub exchangers: Siv nyob rau hauv HVAC systems, tub yees, cua txias, thiab industrial tshav kub hloov khoom siv (xws li, nyob rau hauv chemical nroj tsuag, hluav taws xob tsim).

Cov tshuab cua txias: Radiators rau tsheb, cov kav dej txias rau cov cav, thiab cov dab dej kub rau cov khoom siv hluav taws xob (xws li CPUs, LEDs).

Cov kav dej & kav dej: Cov kav dej siv tau, cov khoom siv, thiab cov li qub (tsis yog- tshuaj lom, corrosion-} tiv taus, thiab malleable rau shaping rau hauv cov ntaub ntawv complex).

3. Muaj Machinery & Manufacturing

Vuam / brazing: tooj liab electrodes, vuam rods, thiab brazing muab tub lim hlau (zoo thermal conductivity ua kom muaj kev sib faib hluav taws xob).

Hlau txoj kev: Kos rau hauv cov xov hlau, dov rau hauv cov nplooj ntawv / daim hlau, los yog extruded rau hauv cov hlab ntsha (siab ductility tso cai rau txoj kev shaping tsis tawg).

Fasteners & hardware: Rivets, screws, thiab bolts rau daim ntaub ntawv uas yuav tsum tau corrosion kuj (xws li, marine hardware, architectural fixtural).

4. Architecture & Kev tsim kho

Kho kom zoo nkauj ntsiab: ru tsev, cladding, gutters, thiab hniav sculptures (tsim ib tug tshwj xeeb ntsuab patina lub sij hawm, ntxiv aesthetic tus nqi).

Kev tsim kho vaj tsev: Kev xa hluav taws xob hauv tsev nyob / kev lag luam, cov kav dej cua sov, thiab HVAC ductwork.

5. Aerospace & Automotive

Aerospace: Hluav taws xob thaiv hauv cov dav hlau, cov khoom siv hluav taws xob sib txuas rau lub dav hlau dav hlau, thiab cov khoom siv hauv satellite systems (kev ntseeg siab thiab ua haujlwm rau huab cua txias).

Automotive: Roj teeb cables, radiators, thiab nres kab (lub teeb yuag, corrosion-tiv taus, thiab txuag hluav taws xob).

6. Lwm yam kev siv tshwj xeeb

Cov cuab yeej kho mob: Cov cuab yeej phais mob (tsis yog- tshuaj lom, yooj yim kom tsis muaj menyuam) thiab cov cuab yeej siv duab (xws li, MRI tshuab, vim muaj cov khoom siv siab).

Lub zog tauj dua tshiab: Hnub ci vaj huam sib luag thaiv, lub tshuab hluav taws xob cua tshuab hluav taws xob, thiab cov khoom siv hluav taws xob hydrogen (txhawb nqa lub zog xa mus thiab khaws cia).

Dab tsi yog cov qib ntawm cov tooj liab ntshiab