Mkuwa
Kugwiritsiridwa ntchito kwa mkuwa ndi mkuwa kunayamba zaka mazana ambiri, ndipo masiku ano kumagwiritsidwa ntchito muzinthu zamakono zamakono ndi zogwiritsira ntchito pamene zikugwiritsidwabe ntchito ndizogwiritsa ntchito zachikhalidwe monga zida zoimbira, zokopa zamkuwa, zolemba zokongoletsera ndi zida zapampopi ndi pakhomo.
Kodi Brass Amapangidwa Ndi Chiyani?
Brass ndi aloyi wopangidwa kuchokera kuphatikiza mkuwa ndi zinki kuti apange zida zogwiritsa ntchito uinjiniya wambiri. Kapangidwe ka mkuwa kumapangitsa chitsulo kukhala malo osungunuka oyenera kugwiritsa ntchito zambiri, kuphatikiza zoyenera kujowina pogwiritsa ntchito njira yowotcha. Malo osungunuka a mkuwa ndi otsika kuposa mkuwa pafupifupi 920 ~ 970 madigiri Celsius kutengera kuchuluka kwa Zn kuwonjezera. Malo osungunuka a mkuwa ndi otsika kuposa mkuwa chifukwa cha Zn yowonjezera. Ma aloyi amkuwa amatha kusiyanasiyana kuchokera pa 5% (yomwe imatchedwa Gilding Metals) mpaka 40% monga momwe amagwiritsidwira ntchito popanga mikuwa. Mawu omwe amagwiritsidwa ntchito mosadziwika bwino ndi mkuwa wa mkuwa, pomwe zowonjezera za malata zimagwiritsidwa ntchito.
Kodi mkuwa umagwiritsidwa ntchito chiyani?
Kupanga kwa mkuwa ndi kuwonjezera kwa zinc ku mkuwa kumakweza mphamvu ndikupereka mawonekedwe osiyanasiyana, zomwe zimapangitsa kuti mkuwa ukhale wosiyanasiyana kwambiri wazinthu. Amagwiritsidwa ntchito ngati mphamvu zawo, kukana dzimbiri, mawonekedwe ndi mtundu, komanso kumasuka komanso kujowina. Gawo limodzi la alpha brasses, lomwe lili ndi pafupifupi 37% Zn, ndi ductile kwambiri komanso yosavuta kuzizira, yowotcherera ndi braze. Mitundu iwiri ya alpha-beta brasses nthawi zambiri imakhala yotentha.
Kodi pali mitundu yambiri yamkuwa?
Pali ma bras ambiri okhala ndi nyimbo zosiyanasiyana komanso mawonekedwe omwe amapangidwa kuti azigwiritsidwa ntchito mwapadera ndi kuchuluka kwa zinc. Magawo otsika a Zn kuwonjezera nthawi zambiri amatchedwa Guilding Metal kapena Red Brass. Pomwe milingo yayikulu ya Zn ndi ma aloyi monga Cartridge Brass, Free Machining Brass, Naval Brass. Izi zamkuwa pambuyo pake zimakhalanso ndi zowonjezera zina. Kuphatikizika kwa lead ku mkuwa kwagwiritsidwa ntchito kwa zaka zambiri kuthandizira kusinthika kwa zinthuzo poyambitsa ma chip break point. Monga kuopsa ndi kuopsa kwa lead zazindikirika, posachedwapa zasinthidwa ndi zinthu monga silicon ndi bismuth kuti akwaniritse machitidwe ofanana ndi makina. Izi tsopano zimadziwika ngati zotsogola zotsika kapena zotsogola zaulere.
Kodi zinthu zina zikhoza kuwonjezeredwa?
Inde, zinthu zina zazing'ono zimatha kuwonjezeredwa ku mkuwa ndi mkuwa. Zitsanzo za Commons ndizotsogola pamakina monga tafotokozera pamwambapa, komanso arsenic pakukana kwa dzimbiri ku dezincification, malata amphamvu ndi dzimbiri.
Mtundu wa Brass
Pamene zinc zili ndi kuchuluka, mtundu umasintha. Ma alloys otsika a Zn nthawi zambiri amatha kukhala ngati mkuwa mumtundu, pomwe ma alloys apamwamba a zinc amawoneka agolide kapena achikasu.
Chemical Composition
AS2738.2 -1984 Mafotokozedwe ena pafupifupi ofanana
| UNS No | AS No | Dzina Lonse | BSI No | ISO No | JIS No | Mkuwa % | Zinc% | Kutsogolera % | Zina % |
| C21000 | 210 | 95/5 Gilding Chitsulo | - | kuZn5 | C2100 | 94.0-96.0 | ~5 pa | <0.03 | |
| C22000 | 220 | 90/10 Gilding Chitsulo | CZ101 | kuZn10 | C2200 | 89.0-91.0 | ~ 10 | <0.05 | |
| C23000 | 230 | 85/15 Gilding Zitsulo | CZ102 | kuZn15 | C2300 | 84.0-86.0 | ~ 15 | <0.05 | |
| C24000 | 240 | 80/20 Gilding Chitsulo | CZ103 | kuZn20 | C2400 | 78.5-81.5 | ~ 20 | <0.05 | |
| C26130 | 259 | 70/30 Arsenical Brass | CZ126 | CuZn30As | Mtengo wa C4430 | 69.0-71.0 | ~ 30 | <0.07 | Arsenic 0.02-0.06 |
| C26000 | 260 | 70/30 Mkuwa | CZ106 | kuZn30 | C2600 | 68.5-71.5 | ~ 30 | <0.05 | |
| C26800 | 268 | Yellow Brass (65/35) | CZ107 | kuZn33 | C2680 | 64.0-68.5 | ~ 33 pa | <0.15 | |
| C27000 | 270 | 65/35 Waya Brass | CZ107 | kuZn35 | - | 63.0-68.5 | ~ 35 | <0.10 | |
| C27200 | 272 | 63/37 Common Brass | CZ108 | kuZn37 | C2720 | 62.0-65.0 | ~ 37 pa | <0.07 | |
| C35600 | 356 | Mkuwa Wosema, 2% Wotsogolera | - | Mtengo wa CuZn39Pb2 | C3560 | 59.0-64.5 | ~39 pa | 2.0-3.0 | |
| C37000 | 370 | Mkuwa Wosema, 1% Wotsogolera | - | CuZn39Pb1 | Mtengo wa C3710 | 59.0-62.0 | ~39 pa | 0.9-1.4 | |
| C38000 | 380 | Gawo la Brass | CZ121 | Mtengo wa CuZn43Pb3 | - | 55.0-60.0 | ~43 pa | 1.5-3.0 | Aluminiyamu 0.10-0.6 |
| C38500 | 385 | Mkuwa Wodula Waulere | CZ121 | KuZn39Pb3 | - | 56.0-60.0 | ~39 pa | 2.5-4.5 |
Mitsuko nthawi zambiri imagwiritsidwa ntchito popanga mawonekedwe awo
| UNS No | Dzina Lonse | Mtundu |
| C11000 | ETP Copper | Pinki Yofewa |
| C21000 | 95/5 Gilding Chitsulo | Red Brown |
| C22000 | 90/10 Gilding Chitsulo | Bronze Gold |
| C23000 | 85/15 Gilding Zitsulo | Mtengo wa Golide |
| C26000 | 70/30 Mkuwa | Golide Wobiriwira |
Gilding Metal
C22000, 90/10 Gilding zitsulo, amaphatikiza mtundu wolemera wa golide ndi kuphatikiza kwabwino kwamphamvu, ductility ndi kukana dzimbiri kwa chigwa cha Cu-Zn alloys. Imakhala ndi utoto wonyezimira wa bronze. Ili ndi luso lojambula mozama kwambiri, komanso imakana kuyika dzimbiri panyengo yoopsa komanso m'madzi. Amagwiritsidwa ntchito muzomangamanga za fascias, zodzikongoletsera, zokongoletsera zokongoletsera, zogwirira zitseko, ma escutcheons, zida zam'madzi.
Mkuwa wachikasu
C26000, 70/30 Brass ndi C26130, Arsenical brass, ali ndi ductility kwambiri ndi mphamvu, ndipo amagwiritsidwa ntchito kwambiri mkuwa. Arsenical brass ili ndi kuwonjezera pang'ono kwa arsenic, komwe kumathandizira kwambiri kukana dzimbiri m'madzi, koma ndizofanana. Ma aloyiwa ali ndi mtundu wachikasu wonyezimira womwe umagwirizanitsidwa ndi mkuwa. Amakhala ndi kuphatikiza kokwanira kwa mphamvu ndi ductility mu ma aloyi a Cu-Zn, kuphatikiza ndi kukana kwa dzimbiri. C26000 imagwiritsidwa ntchito pomanga, zotengera ndi zopota zopota ndi mawonekedwe, ma terminals amagetsi ndi zolumikizira, zogwirira zitseko, ndi zida za plumbers. C26130 imagwiritsidwa ntchito pachubu ndi zopangira pokhudzana ndi madzi, kuphatikiza madzi amchere.
C26800, Yellow brass, ndiye gawo limodzi la alpha brass lomwe lili ndi mkuwa wotsika kwambiri. Amagwiritsidwa ntchito pomwe zojambula zake zozama komanso zotsika mtengo zimapereka mwayi. Pamene welded particles wa beta gawo akhoza kupanga, kuchepetsa ductility ndi dzimbiri kukana.
Zomera zokhala ndi zinthu zina
C35600 ndi C37000, mkuwa wozokota, ndi 60/40 alpha-beta brasses okhala ndi milingo yosiyanasiyana ya lead yomwe imawonjezedwa kuti ipereke mawonekedwe a makina aulere. Amagwiritsidwa ntchito kwambiri pazitsulo zojambulidwa ndi zolembera, zida za omanga, zida. Siziyenera kugwiritsidwa ntchito pa ntchito yokhala ndi asidi, yomwe ma alpha brasses agawo limodzi ayenera kugwiritsidwa ntchito.
C38000, Gawo lamkuwa, ndi mkuwa wotsogola wosavuta kutulutsa wa alpha/beta wokhala ndi chowonjezera chaching'ono cha aluminium, chomwe chimapereka mtundu wowala wagolide. Kutsogolera kumapereka makhalidwe odula aulere. C38000 imapezeka ngati ndodo zowonjezera, ma tchanelo, ma flats ndi ma angles, omwe amagwiritsidwa ntchito popanga zida zomanga.
C38500, kudula mkuwa, ndi mawonekedwe abwino kwambiri a 60/40 mkuwa, okhala ndi makhalidwe abwino kwambiri odula. Amagwiritsidwa ntchito popanga zinthu zambiri zamkuwa pomwe kutulutsa kwakukulu komanso moyo wautali wa zida zimafunikira, komanso pomwe palibe kuzizira kwina kumapanga pambuyo pakukonza.
Mndandanda wa Zida Zamkuwa
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Nthawi yotumiza: Dec-19-2022