Qhov txawv ntawm Bronze thiab tooj liab

1. Chemical Composition (Core Distinction)

Ntshiab Copper (Cu)

Cov Khoom Tseem Ceeb: Ntau tshaj los yog sib npaug rau 99.3% ntshiab tooj liab (Cu), nrog tsawg impurities (xws li, oxygen, hlau, sulfur) feem ntau qis dua 0.7%.

Cov Qib Siab:

ASTM B152 (US tus qauv): C11000 (oxygen-dawb tooj liab, OFHC), C10200 (oxygen-cov kabmob tooj liab).

GB / T 5231 (Suav tus qauv): T2 (99.90% Cu), T3 (99.70% Cu), TU1 / TU2 (oxygen- dawb tooj liab).

Ntsiab Feature: Tsis txhob txwm ua alloying ntsiab-purity yog nws tus yam ntxwv txhais.

Bronze

Cov Khoom Tseem Ceeb: Copper (Cu) raws li lub hauv paus hlau (feem ntau 80–95%) +Tin (Sn)raws li thawj alloying keeb (5-20%).

Alloy Variations:

Tin Bronze: Traditional bronze (Cu-Sn), eg, ASTM B22 (C90300, C90500), GB/T 5231 (QSn4-3, QSn6.5-0.1).

Tshwj xeeb Bronzes: Alloyed nrog cov ntsiab lus ntxiv los txhim kho cov khoom:

Aluminium Bronze (Cu-Al): Txhim kho corrosion (piv txwv li, C60800, QAl9-4).

Phosphor Bronze (Cu-Sn-P): Ntau zog thiab hnav tsis kam (xws li C51000, QSn10-1).

Lead Bronze (Cu-Sn-Pb): Zoo dua machinability (piv txwv li, C93700, QSn6-6-3).

Ntsiab Feature: Alloying (tshwj xeeb tshaj yog tin) fundamentally hloov cov tooj liab lub ntuj yam ntxwv.

2. Lub cev muaj zog

Khoom	Ntshiab tooj liab	Bronze
Xim	Bright reddish-txiv kab ntxwv (tom qab polishing); tarnishes rau tsaus xim av / ntsuab dhau sijhawm.	Golden-xim av rau xim av tsaus (vim los ntawm cov ntsiab lus tin); tsaus dua li tooj liab dawb.
Qhov ceev (g / cm³)	~ 8.96 (ntau dua vim yog purity siab)	~ 8.8–9.2 (me ntsis qis dua cov tooj liab ntshiab, nyob ntawm cov ntsiab lus alloying).
Melting Point (zeeg)	~1085 (ntau dua purity=siab melting point)	~ 950-1050 (qis dua cov tooj liab ntshiab; txo qis nrog nce cov ntsiab lus tin).
Hluav taws xob conductivity (IACS%)	95–100 (zoo heev-thib ob rau nyiaj)	15-40 (tsis zoo; alloying ntsiab cuam tshuam electron ntws).
Thermal conductivity (W / m · K)	~ 401 (hloov kub zoo heev)	~ 50-150 (qhov tseem ceeb qis dua tooj liab ntshiab).
Ductility/Malleability	Siab siab heev- yooj yim kos rau hauv cov xov hlau, dov rau hauv cov nplooj ntawv, lossis forged yam tsis muaj tawg.	Tsawg ductility tshaj tooj liab ntshiab; ua nkig ntau dua nrog cov ntsiab lus tin ntau dua (tab sis tseem tuaj yeem ua tau zoo rau casting / sib sau).

3. Mechanical Properties

Khoom	Ntshiab tooj liab	Bronze
Tensile zog (MPa)	220-300 (ntiv nplhaib); mus txog 400 (txias- ua haujlwm)	350-900 (nws txawv los ntawm alloy: tin bronze=350-600; aluminium bronze=600-900).
Yield zog (MPa)	70-100 (ntaub ntawv); mus txog 350 (txias- ua haujlwm)	200-600 (ntau dua li tooj liab ntshiab vim muaj zog alloy).
Hardness (HB)	35-60 (nruab nrab)	80–200 (ntau zog; eg, QSn6.5-0.1=~ 100 HB; QAl9-4=~ 180 HB).
Hnav Resistance	Tsis zoo- mos thiab ua rau puas.	Zoo heev -tin thiab lwm yam alloys tsim cov theem nyuaj (xws li, Cu₃Sn) uas tiv taus hnav.
Corrosion Resistance	Zoo nyob rau hauv uas tsis yog -corrosive ib puag ncig (cua, dej); susceptible to pitting hauv acidic/alkaline media.	Superior rau ntshiab tooj liab: tin tsim ib txheej tiv thaiv oxide (SnO₂); aluminium bronze resists seawater / tshuaj corrosion.

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4. Kev tsim khoom & kev ua haujlwm

Ntshiab tooj liab

Txheej txheem txheej txheem: Zoo tagnrho rau kev ua haujlwm txias (xov hlau kos duab, ntawv dov, raj extrusion) thiab ua haujlwm kub (forging, annealing).

Casting Suitability: Tsis zoo- siab melting point thiab shrinkage thaum lub sij hawm solidification ua rau casting nyuaj (tso rau cov txheej txheem tshwj xeeb xws li centrifugal casting).

Kev kho saum npoo: Yooj yim polished, plated (xws li, npib tsib xee, nyiaj), los yog soldered.

Bronze

Txheej txheem txheej txheem:

Casting: Kev castability zoo heev -tws melting point thiab fluidity ua rau nws haum rau xuab zeb casting, tuag casting, thiab peev casting (siv rau complex duab xws li iav, li qub, thiab sculptures).

tsim: Kub ua hauj lwm (forging, extrusion) yog ntau; Kev ua haujlwm txias yog ua tau rau qis -tin bronzes tab sis txwv los ntawm brittleness.

Machineability: Txhim kho los ntawm cov hlau lead ntxiv (piv txwv li, txhuas bronze) tab sis feem ntau tsis zoo dua cov tooj liab ntshiab.

5. Daim ntawv thov (Industrial & Commercial)

Ntshiab tooj liab

Hluav taws xob / Electronic: Hlau, cables, busbars, transformer windings, Circuit Court boards (vim yog high conductivity).

Thermal Management: Kub exchangers, radiators, txias kav, thiab HVAC Cheebtsam (zoo thermal conductivity).

Cov kav dejCov kav dej, fittings, thiab li qub (corrosion kuj nyob rau hauv potable dej; malleability rau shaping).

Kev tsim vaj tsev: vov tsev, cladding, thiab hniav ntsiab (tarnishes rau ib tug txawv ntsuab patina).

Bronze

Mechanical Cheebtsam: Gears, bearings, bushings, and shafts (high wear resistance and load{0}}bearing capacity).

Marine/Industrial: Propellers, nkoj hull fittings, thiab chemical cog li qub (aluminium bronze resists seawater / tshuaj corrosion).

Aerospace/Auto: Aircraft landing gear parts, automotive bushings (siab zog thiab kub tsis kam).

Art/Cultural: Sculptures, pej thuam, thiab suab paj nruag (xim kub, castability, thiab keeb kwm kev lig kev cai).

Hluav taws xob tiv tauj: Phosphor bronze contacts hauv keyboards thiab relays (sib npaug ntawm conductivity thiab hnav tsis kam).

6. Nqi & Muaj

Ntshiab tooj liab: Tus nqi siab dua vim kev xav tau purity siab; tus nqi khi rau lub ntiaj teb tooj liab cov khoom lag luam (volatile). Muaj nyob rau hauv cov qauv txheem (xaim, nplooj ntawv, kav).

Bronze: Tus nqi sib txawv los ntawm cov hlau alloy (tin kim dua tooj liab; txhuas / txhuas ntxiv tuaj yeem txo nqi). Feem ntau pheej yig dua tooj liab ntshiab rau kev siv tshuab; tshwj xeeb bronzes (piv txwv li, siab-tin lossis txhuas bronze) tej zaum yuav raug nqi ntau dua. Muaj nyob rau hauv castings, forgings, thiab semi{5}}cov khoom tiav (bars, raj).

7. Qhov tseem ceeb ntawm kev lag luam hlau

Purity vs. Alloying: Ntshiab tooj liab=unalloyed (siab conductivity/ductility); bronze=Cu-Sn alloy (siab zog / hnav tsis kam).

Kev Tshawb Fawb Cov Neeg Siv Khoom kom pom tseeb: Nug rau daim ntawv thov (hluav taws xob / mechanical / marine), yuav tsum muaj zog (conductivity / hardness / corrosion resistance), thiab cov qauv (ASTM / GB / DIN) kom paub qhov txawv cov kev xav tau.

Kev txiav txim siab muab khoom: Ntshiab tooj liab muaj kev ruaj khov thoob ntiaj teb (chaw muaj); tshwj xeeb bronzes yuav xav tau yam tsawg kawg nkaus txiav txim kom muaj nuj nqis (MOQs) los yog kev cai casting (lub sij hawm txhuas 2-6 lub lis piam).

Qhov kev sib piv no pab qhia meej txog kev sib txawv ntawm cov neeg siv khoom sib txuas lus, xaiv cov khoom, thiab kev sib tham hauv cov xwm txheej ntawm kev lag luam hlau.