Kho kom zoo nkauj bronze: pwm casting

2024 Tus sau: Sierra Becker | [email protected]. Kawg hloov kho: 2024-02-26 05:10

Txhawm rau muab cov koom haum sab hauv nrog cov neeg nyiam tshaj plaws ntawm Cov Hnub Nyoog Nrab Hnub Nyoog, cov tswv tsev kho kom zoo nkauj tau siv tooj dag ntev ntev, thiab tshwj xeeb tshaj yog tooj liab. Casting los ntawm cov alloys txawm tam sim no ua rau nws muaj peev xwm los tsim monumental masterpieces uas yuav decorate ib lub tsev.

Bronze khoom

Hauv kev kos duab, cov hlau feem ntau siv ntau dua li cov hlau ntshiab. Bronze yog tshwj xeeb tshaj yog nrov - ib tug alloy ntawm tooj liab nrog tin (ntxiv thiab alloying caij) nyob rau hauv ntau yam proportions. Yog tias zinc ntxiv es tsis txhob tin, qhov tshwm sim yog tooj dag, thiab yog tias npib tsib xee ntxiv, cupronickel. Tooj liab ua ke nrog txhuas, beryllium lossis silicon kuj suav tias yog tooj liab. Cov ntsiab lus alloying yog qhia nyob rau hauv lub npe:

• BrO5, qhov twg tin yog 5%;
• BrOS5-25: 5% tin thiab 25% lead.

Dab tsi yog cov cuab yeej thev naus laus zis ntawm bronze? Casting yog ua tau thaum cov khoom ncav cuag fluidity. Qhov kub ntawm cov tooj liab melts yog 1083 ° C. Thaum cov tin ntxiv rau nws, qhov pib poob mus rau 800 ° C, uas ua rau cov txheej txheem cua sov cov khoom siv zoo heev. Tom qab hardening, cov khoom muaj ib tug shrinkage txog li 1%. Nyob ntawm cov khoom, cov khoom bronze yuav txawvtawv. Nrog rau qhov tsawg kawg nkaus ntawm cov tin, lawv tuaj yeem raug forged, nrog rau qhov concentration ntawm 20% lossis ntau dua, lawv ua tawv thiab nkig. Plasticity yog ntxiv los ntawm kev qhia cov hmoov txhuas rau hauv cov khoom xyaw. Qhov sib ntxiv ntawm zinc ua rau cov khoom tiv taus corrosion.

Bronze: casting

Lub melting ntawm cov hlau yog ua ntej los ntawm kev npaj ua haujlwm ntau heev. Ib feem ntawm nws muaj feem xyuam rau kev tsim cov qauv. Nyob rau theem no, tus sculptor sculpts ib tug qauv rau scale ntawm cov khoom yas. Tom qab ntawd nws txhais nws mus rau lub neej loj hauv plaster lossis av nplaum. Ib qho kev xav rov qab yog coj los ntawm tus qauv hloov pauv no. Ib daim ntawv complex muaj ob peb lub ntsiab lus thiab tau sib sau ua ke hauv qhov chaw. Rhaub ciab yog poured rau hauv nws. Wrapping daim ntawv, ua tiav nws cov kev faib tawm ib yam ntawm tag nrho cov nto. Tom qab txias, ib tug qauv ntawm yav tom ntej sculpture yog tsim, ua nyob rau hauv ciab. Tus sau ua tiav cov ntsiab lus, kho qhov tsis txaus.

Kev ua yeeb yam ntawm tooj liab thiab tooj dag tau dhau los ua haujlwm dhau los siv cov pwm ploj ("waxes"). Cov duab puab yog hollow nrog phab ntsa thickness ntawm 2-5 mm. Txwv tsis pub, yog tias cov hlau ntim tag nrho cov pwm, tom qab ntawd ib qho loj loj casting yuav hnyav heev, thiab ntau cov khoom yuav tsum tau. Thiab nws tsis yog tus nqi xwb. Thaum pouring, nws yuav tsum tam sim ntawd yaj tag nrho nws cov nyiaj, thiab qhov no cia li tsub kom qhov luaj li cas ntawm lub hearth thiab rauv taws, complicates tus txheej txheem ntawm muab cov alloy rau pwm. Tsis tas li ntawd, shrinkage ntawm cov khoom yuav ua rau inevitable deformation, uas yuav ua rau distortion ntawm cov duab thiab ib tug neeg. Cov ntsiab lus sib xyaw.

txheej txheem nta

Tom qab tsim daim ntawv siv quav ciab, cov kauj ruam tom ntej pib. Lub caster yuav siv sij hawm tshaj. Nws tsim nws tus kheej pwm rau pouring molten hlau. Wax yog them nrog tshwj xeeb tshav kub-resistant muaj pes tsawg leeg nyob rau hauv ob peb txheej. Ua ntej, xws li kua ceramics yog poured rau hauv cov quav ciab pwm. Nyob rau theem no, ib qho tseem ceeb yog tsim - "doodle". Tom qab nws hardens nrog tib yam muaj pes tsawg leeg, tus qauv yog ua tib zoo npog los ntawm sab nraud, teeb tsa tus naj npawb ntawm "lub caij ntuj sov" qhov twg cov bronze yuav raug xa mus.

Casting ua tau tom qab sintering (calcining) qhov loj ntawm qhov kub thiab txias. Raws li cov txheej txheem no, lub plhaub muaj zog ceramic yog tsim. Cov wax yog evaporated los ntawm cov vents thiab cua qhov hluav taws xob. Qhov tshwm sim yog ib tug hollow puab. Tom qab nchuav hlau, nws tawg. Sab hauv txheej ntawm ceramic tuaj yeem sab laug lossis tshem tawm los ntawm qhov nkag.

Ntxhais tooj dag tom tsev

Nws tseem tuaj yeem tau txais cov khoom siv hlau hauv daim ntawv av. Nyob rau hauv tsev, yog tias koj muaj ib tug template, koj muaj peev xwm ua ib tug bronze casting nyob rau hauv no txoj kev. Tab sis koj yuav tsum tau npaj rau qhov tseeb tias nws yuav tsis tuaj yeem ua tiav qhov kev luam tawm ntawm cov ntsiab lus me me thiab ua kom zoo dua qub. Daim ntawv yog pov tseg, tab sis lub ntiaj teb nws tus kheej (ib qho sib xyaw ntawm av nplaum thiab xuab zeb) tuaj yeem siv tau ntau zaus. Feem ntau ua cov ntaub ntawv detachable, muaj ob feem. Tab sis koj tuaj yeem ua ib qho yog tias koj siv cov qauv siv quav ciab. Tom qab sintering, cov av nplaum pwm yog boiled nyob rau hauvdej, ciab ntab mus rau nws saum npoo ntawm letnik.

Zoo casting tuaj yeem tau txais yog tias pwm yog preheated. Tooj liab thiab tin yog rhuab nyob rau hauv ib tug hlau crucible. Siv lub tshuab hluav taws xob los yog lub tshuab hluav taws xob. Tom qab ua tiav melting, cov hlau yog khaws cia ntawm qhov kub thiab txias rau ob peb feeb ntxiv thiab ncuav rau hauv lub cia nyob rau hauv ib tug nyias kwj. Cov khoom tom qab txias yog ntxiv ua tiav. Ua ntej, cov hlau khov hauv letniki raug txiav tawm. Cov chaw raug tshem tawm. Cov ntsiab lus zoo raug tsim thaum lub sijhawm minting. Cov khoom yog hauv av, polished, yog tias tsim nyog them nrog patina.