1. Qhov sib txawv hauv solubility thiab alloy ntxiv dag zog rau cov txheej txheem
Hauv kev loj tooj liab Alloy cov tshuab, cov ntsiab xws li zinc, thiab txhuas nthuav tawm qhov sib txawv tseem ceeb hauv solubility. Nyob rau hauv chav tsev kub sib npaug, zinc muaj cov solubility txog 37% los ntawm huab hwm coj tus tooj liab, thiab kwv yees li 30%}}}} pob. Hauv kev sib piv, qhov li - duab pob solubility ntawm tin hauv tin bronze tsuas yog 5-6%, thiab solubility ntawm txhuas hauv txhuas xim yog kwv yees li 7-8%. Lub siab solubility ntawm zinc nyob rau hauv cov ntawv kho tooj liab ua rau muaj cov tshuaj muaj zog zog dua qub. Ib qho ntxiv, feem ntau cov ntsiab lus muaj peev xwm zom ua kom sib txawv hauv cov kab tooj dag, txuas ntxiv txhim kho nws cov khoom siv mechanical. Qhov no yog qhov tseem ceeb vim li cas tooj dag tshwj xeeb alloys ua pov thawj siab ua rau muaj lub zog ua zog.
Los ntawm kev pom muaj kev lag luam, Zinc yog pheej yig dua aluminium thiab nws cov peev txheej ntau tshaj plaws ua rau tag nrho cov nqi ntawm lub ntsej muag uas yog cov xim tooj to.
2. Kev ua yeeb yam zoo ntawm tooj dag
Cov yam ntxwv zoo thiab Fellity
Brass muaj qhov tob tob crystallization kub (kwv yees li 30- 40- zoo li yam. Qhov ntsuas kub txo qis cuam tshuam nrog cov ntsiab lus zinc ntau dua li 900 degree), ua rau cov kab ke hlau zoo uas tuaj yeem sau cov kab me me. Tsis tas li ntawd, nqaim crystallization ntau yam txo cov kab ke uas tsis yooj yim, uas ua kom yooj yim rau cov lus qhia kev sib tw ntawm kev ris txiaj.
Smelting thiab deoxidation cov yam ntxwv
Zinc muaj qhov tseeb ntawm 907 degree, uas yog ze rau melting pot ntawm tooj dag. Thaum lub sij hawm ua, zinc yooj yim evaporates thiab tshem tawm cov roj av los ntawm cov tooj liab molten, txo qhov kev pheej hmoo ntawm kev tsim porosity. Tsis tas li ntawd, Zinc muaj cov peev xwm dazidization muaj zog, tshem tawm qhov kev xav tau rau deoxidizing ntxiv thaum lub sijhawm smelting, yog li ntawd tso kom cov txheej txheem thiab txo tus nqi. Txawm hais tias ZNO oxides yuav tsim thaum smelting, lawv cov tuab neeg qis ua rau lawv kom ntab thiab tiv thaiv cov oxidation theem nrab tuaj yeem zam kev tsis taus.
Cov txheej txheem hloov tau
Tooj dag tsis rhiab rau cov nqi txias, thiab nws cov khoom siv tshuab ua kom nruj me ntsis, ua rau nws muaj cov duab puab, tuag casting, thiab centrifugal casting. Kev ntsuas cov txheej txheem xws li:
Kev Tsim Kho Cov xuab zeb: Siv cov Cores xuab zeb nrog cov txiaj ntsig Sand nrog cov txiaj ntsig zoo kom txo cov kev ntxhov siab thiab tiv thaiv cov kab nrib pleb thiab deformation;
Cov neeg khiav thiab hliv cov tshuab loj: nruab rau loj - kev sib tw tau ua kom tiav cov kev sib tw nrog kev ua kom txias;
Nchuav qhov ntsuas kub
3. Kev txwv tsis pub thiab txhim kho kev txhim kho
Corrosion Kuj Tsis Zoo
Zinc muaj qhov qis dua electrode peev xwm tshaj li tooj liab, piv txwv li cov khoom siv season (} Decog dig tooj dag ua kom pom kev tshwj xeeb tsis zoo corrosion tsis kam nyob rau hauv ntws dej hiav txwv thiab chav ib puag ncig.
Kev txhim kho kev ua tau zoo hauv Brassty
Los ntawm kev ntxiv cov khoom siv xws li MN, AL, FE, SI, thiab PB, tooj dag zog muaj peev xwm yog hom phiaj rau kev txhim kho:
Luam tawm tooj dag: ntxiv pb txhim khu kev txhim kho machinability;
Naval tooj dag: ntxiv cov khoom ua kom ruaj khov ntawm lub hiav txwv corrosion tsis kam;
High - Lub zog tooj dag: qhia txog Daws tsho Brass: FE rau cov khoom siv hluav taws xob ntxiv, txhim kho cov khoom siv mechaycharies;
Tuag - Casting Brass: Ua kom tau zoo sib xyaw ua kom haum rau cov txiaj ntsig siab, ntsuas kom zoo nkauj thiab sab nrauv qhov tseeb.
4. Cov ntawv thov kev lag luam tam sim no ntawm tooj dag
Nrog nws cov txiaj ntsig zoo ntawm lub zog siab, tus nqi qis, thiab casting cov txheej txheem sib xyaw ua ke, tooj dag tau dhau los ua cov qeb ntawm alloys tooj liab. Nws cov ntawv thov ncua kev tsim (cov khoom siv, lub tsev kho vajtse (li qub), cov khoom siv canensater), cov khoom siv dej hiav txwv, dej hiav txwv. Txawm hais tias nws corrosion tsis kam yog qis dua rau tooj dag, nws tswj txoj haujlwm muaj kev tiv thaiv tsis zoo thiab kev tiv thaiv saum npoo av thiab kev kho mob hla).
5. Ntsiab lus
Brass yog raws li cu - zn binary alloy, thiab kev ua kom zoo dua qub, nws tau tsim tshwj xeeb kev ua tau zoo. Txawm hais tias nws corrosion tsis kam txwv, nws tseem yog irreplaceable hauv ntsuas kev ua haujlwm sib npaug, kev tswj tus nqi, thiab lub zog kho tshuab muaj zog. In the future, with the development of environmentally friendly lead-free brass and high-corrosion-resistant alloys, brass will continue to expand its application scenarios in high-end manufacturing fields.