Cov ntsiab lus zinc cuam tshuam rau cov khoom ntawm Brass

1. Cov nyhuv ntawm Zinc Cov ntsiab lus ntawm Brass Properties

Brass yog tooj liab-zinc (Cu-Zn) alloy, thiab zinc cov ntsiab lus yog qhov tseem ceeb uas txiav txim siab nws cov khoom siv, corrosion resistance, machinability, thiab tsos. Cov kev cuam tshuam tseem ceeb yog categorized los ntawm cov ntsiab lus zinc cov ntsiab lus:

Zinc Content Range (%)	Cov khoom tseem ceeb & Hloov	Daim ntawv thov Scenario
10-20 (Zinc Tsawg: Liab Brass)	- Mechanical Properties: High ductility, zoo toughness, thiab tsis muaj zog; yooj yim rau kev ua haujlwm txias (xws li, khoov, kos duab). - Corrosion Resistance: Zoo heev tiv thaiv corrosion nyob rau hauv seawater, brines, thiab organic acids (zoo tshaj rau siab -zinc tooj dag). - Qhov tshwm sim: Reddish- kub xim (vim cov ntsiab lus tooj liab siab).	Marine hardware, kav dej fittings, tshav kub exchangers, hniav Cheebtsam.
20-35 (Medium Zinc: Yellow Brass)	- Mechanical Properties: Sib npaug zog thiab ductility; zoo rau ob qho tib si txias thiab kub ua hauj lwm (xws li, forging, extrusion). - Machineability: Zoo (piv txwv li, dawb- txiav tooj dag nrog cov hlau lead ntxiv, piv txwv li, C36000, muaj ~ 30% Zn). - Corrosion Resistance: Nruab nrab (tsim rau kev siv dav dav- lub hom phiaj).	Fasteners, li qub, iav, hluav taws xob txuas, cov twj paj nruag.
35-45 (High Zinc: Muntz Hlau / Naval Brass)	- Mechanical Properties: High tensile strength and hardness; poor ductility (brittle at room temperature if zinc >40%). - Kub ua haujlwm: Zoo heev (ua haujlwm ntawm kub dov lossis forging, tsis ua haujlwm txias). - Corrosion Resistance: Tsawg tshaj li qhov qis / nruab nrab zinc tooj dag (nruj mus rau "dezincification" nyob rau hauv ib puag ncig hnyav, piv txwv li, acidic daws).	Nkoj hulls, condenser raj, cov khoom siv (kub-tsim qhov chaw).
>45 (Zoo heev zinc)	- Mechanical Properties: nkig heev (tsis siv tau rau feem ntau cov ntawv thov engineering). - Corrosion Resistance: Poob (hnyav dezincification txaus ntshai).	Tsis siv neeg ua lag luam (tsuas yog rau kev tshawb fawb lub hom phiaj).

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2. Puas muaj cov ntsiab lus zinc ntau dua ib txwm zoo dua?

Tsis yog, cov ntsiab lus zinc ntau dua tsis muaj txiaj ntsig zoo. Qhov zoo tshaj plaws zinc cov ntsiab lus nyob ntawm daim ntawv thov npaj:

Qhov zoo ntawm cov ntsiab lus zinc ntau dua: Ua kom muaj zog thiab hardness, txhim kho kev ua haujlwm kub (rau Zn 35-45%), thiab cov nqi qis dua (zinc yog pheej yig dua tooj liab).

Qhov tsis zoo ntawm cov ntsiab lus zinc ntau dua:

Reduced ductility and toughness (brittleness becomes a critical issue when Zn >40%).

Muaj kev pheej hmoo ntawmdezincification(ib daim ntawv ntawm corrosion qhov twg zinc yog xaiv leached los ntawm alloy, tawm hauv ib tug ntxeem tau tooj liab qauv uas tsis ua hauj lwm ntxov ntxov).

Kev ua haujlwm txias tsis zoo (siab-zinc tooj dag tsis tuaj yeem khoov, stamped, lossis kos yam tsis muaj tawg).

3. Qhov tseem ceeb Takeaways

Zinc cov ntsiab lus ncaj qha tailors tooj dag zog: qis Zn rau ductility / corrosion kuj, nruab nrab Zn rau qhov sib npaug, thiab siab dua Zn rau lub zog (nrog rau kev lag luam hauv brittleness thiab corrosion kuj).

"siab dua yog qhov zoo dua" tsuas yog siv rau cov xwm txheej tshwj xeeb (piv txwv li, kub- tsim cov khoom siv uas xav tau lub zog siab, qhov twg Zn ~ 38-40% zoo tagnrho). Rau feem ntau - lub hom phiaj, txias- ua haujlwm, lossis corrosion- cov ntawv siv yooj yim, cov ntsiab lus zinc nruab nrab (20–35%) yog qhov nyiam.

Cov ntsiab lus zinc cuam tshuam cov khoom ntawm tooj dag

1. Cov nyhuv ntawm Zinc Cov ntsiab lus ntawm Brass Properties

2. Puas muaj cov ntsiab lus zinc ntau dua ib txwm zoo dua?

3. Qhov tseem ceeb Takeaways