Yuav ua li cas paub qhov txawv tooj daj -} kev paub

1. Yuav ua li cas paub qhov txawv tooj daj

Tooj dag (tooj tooj Cov qauv tseem ceeb muaj xws li:

Kev Saib Xyuas Kev Pom: Tooj dag feem ntau muaj aSov kub - daj rau lub teeb tooj daj{{0-} Distinct los ntawm Ntshiab Tooj Liab Liab Liab Qab {} {2} {} {}}} grey. Sij hawm dhau mus, tooj dag yuav tarnish rau lub duller kub lossis lub teeb ntsuab (patina), tab sis cov xim pib tseem kub heev thaum scraped.

Hlau Nplej Xeem: Tooj dag yogtsis - sib nqus{{0- Tus qauv fridge hlau nplaum yuav tsis lo rau nws. Qhov no sib txawv nws los ntawm cov hlau sib nqus zoo li hlau (uas yuav plated kom zoo li tooj dag) lossis hlau- raws li alloys.

Hardness & Luam Ntawv Kuaj: Tooj dag yog qhov nyuaj dua li cov tooj liab tab sis softer dua li cov hlau tsis siv. Nws tuaj yeem khawb nrog tus ntsia hlau (tsis zoo li stainless hlau, uas tiv taus cov khawb ntoo) tab sis tsis tshua muaj kev kawm zoo dua li tus tooj liab. Tsis tas li ntawd, tooj dag feem ntau muaj tus du, machined tiav (nquag nyob rau hauv fittings lossis Hardware) vim nws zoo heev machinity.

Kev Ntsuas Suab: Thaum tapped me ntsis nrog cov khoom siv hlau, tooj dag ua antshiab, resonant "ntiv nplhaib"{{0 {}}} purer dua tooj liab lub duller thud lossis stainless hlau siab dua- pitched ping. Qhov no tshwj xeeb tshaj yog pom tau nrog cov khoom tooj dag zog zoo li tswb lossis cov ntaub qhwv ntsej muag.

Tshuaj ntsuam xyuas (vinegar -}} ntsev cov tshuaj tiv thaiv): Sib xyaw dawb vinegar thiab ntsev, tom qab ntawd txhuam cov tshuaj rau ntawm thaj chaw ntxuav nrog cov paj rwb. Tooj dag yuavtsis tig lub pob swab xiav - ntsuab(Tsis zoo li tus tooj liab tsis zoo nkauj, uas reacts los ua xiav - tooj liab acetate). Hloov chaw, tooj dag yuav qhia tau qhov tsaus muag kub lossis xim av discoloration, lees tias nws li alloy muaj pes tsawg leeg.

2. Dab tsi yog qhov muaj zog tshaj tawm?

Cov cim muaj zog tshaj plaws yogtxhuas brasses{{0- alloys ntawm tooj liab, zinc, thiab txhuas - nrogC68700 (txhuas tooj)thiabC67500 (Manganese bronze, ib hom txhuas tooj)ua qhov tseem ceeb tshaj plaws. Lawv lub zog siab heev ntawm txhuas lub peev xwm los ua cov tawv intermetallic sib txuas nrog tooj liab, uas txhim kho tensile zog thiab kav ntev.

Cov ntsiab lus tseem ceeb Hais Txog Qhov Siab - Lub zog dag:

C68700 (txhuas tooj): Muaj lub zog tensile ntawm650-750 MPa(Thaum cua sov -} nrhiav) thiab zoo heev corrosion tsis kam (txawm nyob hauv seawater). Nws yog siv rau hnyav {{{2} Lub luag haujlwm} Lub zog {} {} qhov twg ob lub zog thiab kev tawm tsam rau Saltwater tabs yog qhov tseem ceeb.

C67500 (Manganese bronze): Hloov hloov txhuas brass nrog ntxiv manganese (rau kev sib zog ntxiv) thiab hlau (rau cov khoom siv qoob loo ntxiv). Nws khav theeb lub zog tensile ntawm700-800 MPa(cua sov {{-} KHIAV ZOO) thiab tshwj xeeb hnav rau cov zog loj, thiab cov khoom siv kev lag luam uas tiv thaiv hnyav.

By comparison, standard brasses like C26000 (Cartridge Brass) have a tensile strength of only 300–400 MPa, while free-cutting brass (C36000) ranges from 350–450 MPa. Aluminium Brasses yog 2-3 lub sij hawm muaj zog dua li cov qib pib, ua rau lawv xaiv zoo tshaj plaws rau kev siv kev ntxhov siab.

3. Dab tsi yog qhov nyuaj tshaj plaws tooj dag?

Cov qib nyuaj tshaj plaws yog cov qibtxhuas brasses-} specifically tshwj xeebThaum tshav kub kub -} Kho C68700 (txhuas tooj)thiabC67500 (Manganese bronze)- Tsis muaj lawv cov ntsiab lus Alinin Aluminium ua rau kev kho mob tseem ceeb los ntawm kev kho cua sov (kev daws teeb meem). Hardness yog ntsuas siv lub brinell lossis rockwell nplai, nrog cov qib kawm ua tiav qhov txiaj ntsig siab tshaj plaws ntawm cov brasses.

Cov hardness nruj rau cov brass nyuaj:

C68700 (tshav kub kub -}} kho cov txhuas tooj): Muaj brinell hardness (HB) ntawm180-220 HBthiab lub pob zeb hluav taws xob hnyav (HRC) ntawm18-25 hrcCov. Qhov kev nyuaj no tiv thaiv indentation thiab hnav, ua rau nws haum rau cov ntu uas zoo li cov neeg tsis muaj zog thiab cov tub rog ua kom muaj kev sib txawv.

C67500 (tshav kub kub -}}} Kho tus mangorgese bronze): Ua tiav ib qho kev nyuaj dua brinell hardness ntawm200-240 HBthiab rockwell hardness ntawm22-28 hrcCov. Nws lub hardness huab, ua ke nrog kev nruj, ua rau nws zoo tagnrho rau cov hnav xws li bushings, bearings, thiab muaj cov cuab yeej.

Hauv kev sib piv, cov brasses txheem yog ntau softer: C26000 (cartridge tooj dag) muaj lub hardneed) muaj ib qho kev nyuaj (}}}}}} hb. Aluminium Brasses yog 2-3 lub sij hawm nyuaj dua cov qib kawm no kom phim cov ntaub ntawv ua cua sov kom phim, me ntsis qis dua rau kev txhim kho kev sib txawv).