Brass castings thiab bronze castings ob leeg yog tooj liab-raws li alloy castings uas tuaj yeem nrum los ntawmxuab zeb castingthiab peev casting txheej txheem. Brass yog ib qho alloy uas muaj tooj liab thiab zinc. Brass uas muaj tooj liab thiab zinc yog hu ua tooj dag zoo tib yam. Yog tias nws yog ntau hom alloys uas muaj ntau tshaj li ob lub ntsiab lus, nws yog hu ua tooj dag tshwj xeeb. Brass yog tooj liab alloy nrog zinc ua lub ntsiab tseem ceeb. Raws li zinc cov ntsiab lus nce, lub zog thiab plasticity ntawm cov alloy nce ntau, tab sis cov khoom siv kho tshuab yuav txo qis tom qab ntau tshaj 47%, yog li zinc cov ntsiab lus ntawm tooj dag yog tsawg dua 47%. Ntxiv nrog rau zinc, cam khwb cia tooj dag feem ntau muaj cov alloying xws li silicon, manganese, txhuas, thiab txhuas.
Dab tsi yog tooj dag thiab tooj dag peb nrum
• Tuam Tshoj Txuj: H96, H85, H65, HPb63-3, HPb59-1, QSn6.5-0.1, QSn7-0.2
• Tebchaws USA Txuj: C21000, C23000, C27000, C34500, C37710, C86500, C87600, C87400, C87800, C52100, C51100
• European Standard: CuZn5, CuZn15, CuZn35, CuZn36Pb3, CuZn40Pb2, CuSn10P1, CuSn5ZnPb, CuSn5Zn5Pb5
| Alloy | Chemical Composition (%) | Daim ntawv thov | |||
| Tooj | Tin | Zinc | Lwm tus | ||
| Phom Hlau | 88 | 10 | 2 | / | Bearings, Bushes |
| Bronze | 89 | 11 | / | / | Cov kabmob |
| Phosphor tooj liab | 89.5 ib | 10 | / | P = 0.5 | Bearings, Cov |
| Tswb tooj | 75-80 : kuv | 20-25 | / | / | Tswb |
| Admiralty tooj dag | 70 | 1 | 29 | / | Thaum tshav kub kub Exchangers |
| Gilding hlau | 85 | / | 15 | / | Npib |
| Naval tooj dag | 60 | 1 | 39 | / | Kev siv Marine |
| Cartridge tooj dag | 70 | / | 30 | / | Daim duab sib sib zog nqus |
| Lub moos tooj dag | 58-60 : kuv | / | 38-40 : kuv | Pb = 1.5-2.5 | Lub moos thiab engravings |
| Aluminium tooj dag | 76 | / | 22 | Al = 2 | Kev siv Marine |
Cam khwb cia tooj dag muaj cov khoom siv ntau dua li tooj liab, tab sis tus nqi qis dua bronze. Cam khwb cia tooj dag feem ntau yog siv rau lub hom phiaj dav dav bearing bushings, gears thiab lwm yam hnav-resistant qhov chaw thiab li qub thiab lwm yam corrosion-resistant qhov chaw. Brass muaj zog hnav tsis kam. Brass feem ntau yog siv los ua cov li qub, cov kav dej, txuas cov kav dej rau cov cua txias sab hauv thiab sab nraud, thiab cov radiators.
Cov yam ntxwv ntawm Bronze Castings thiab Brass Castings:
• Zoo fluidity, loj shrinkage, me me crystallization kub ntau yam
• Yooj yim rau cov concentrated shrinkage
• Brass thiab bronze castings muaj kev hnav zoo thiab corrosion kuj
• Cov txheej txheem charateristics ntawm tooj dag thiab bronze castings zoo ib yam li steel casting
