Lavorazione Campane

Gennaio 13, 2018 Written by

MARINELLI

Le fasi di lavorazione che portano alla nascita della campana richiedono un lavoro attento e paziente ma principalmente esperienza e passione.

Oggi nella fonderia Marinelli si usano le stesse tecniche ed i materiali dei maestri del Medioevo e del Rinascimento. La tecnologia non ha accelerato il ciclo di lavorazione che può variare da due a molti mesi. Nel 1700 la campana aveva finalmente assunto una forma ben definita, molto simile a quella odierna, tuttavia persisteva spesso la sproporzione fra diametro ed altezza percui continuava a conservare un aspetto affusolato. In seguito fu definita una scala campanaria che indicava proporzioni perfette tra spessore, peso, circonferenza ed altezza, rapportati al timbro sonoro richiesto. La campana può essere considerata un tronco di cono inserito in un cubo; il suo profilo viene disegnato dal compasso non essendovi linee diritte, come riporta anche Diderot nell’ ” Encyclopedie” e questo determina la buona riuscita della campana e del suono.

Preparazione del Modello

Sagoma in legno per campanaSi parte dalla preparazione di una sagoma in legno di noce che corrisponde al profilo della campana. Con essa si disegna una struttura cava di mattoni corrispondente all’interno della campana, L’ANIMA, sulla quale viene distribuito un primo strato di argilla. Sull’anima si sovrappongono alcuni strati di speciali argille fino ad ottenere la FALSA CAMPANA che avrà esattamente lo spessore voluto per la campana di bronzo. Su questa superficie, perfettamente levigata, si applicano fregi ed iscrizioni in cera che dedicano e decorano la campana.

L’ultima fase di formatura consiste nel preparare il MANTELLO ottenuto dalla sovrapposizione di strati di argilla. A modello ultimato viene sollevato il mantello per scoprire la falsa campana che verrà distrutta, il mantello sarà riposizionato sull’anima cosicchè all’interno del modello si sarà creata l’intercapedine nella quale verrà colato il bronzo.

A questo punto Il Modello è pronto per essere collocato nel fosso di colata, ai piedi del forno, per essere interrato. Il modello della campana è bloccato saldamente nella fossa di colata al fine di non subire spostamenti durante la fusione. Il bronzo (78 parti di rame e 22 di stagno) fonde in un grande forno a riverbero, alimentato a legna, alla temperatura di circa 1150°.

Read 15459392 times Last modified on Sabato, 13 Gennaio 2018 16:36
More in this category: « Lavorazione Campane

1015033 comments

  • Comment Link solar lights outdoors Ottobre 07, 2022 posted by solar lights outdoors

    Definitely believe that which you stated. Your favorite reason seemed to be on the
    net the simplest thing to be aware of. I say to you, I definitely get irked while people consider worries that they just do not know about.

    You managed to hit the nail upon the top as well as defined out the whole thing without having side effect ,
    people could take a signal. Will probably be back to get more.
    Thanks

  • Comment Link off white Ottobre 07, 2022 posted by off white

    I have to point out my appreciation for your kindness in support of people who really want help on this particular field. Your very own commitment to passing the solution around became really informative and have usually made many people like me to reach their desired goals. Your personal interesting suggestions denotes much a person like me and especially to my colleagues. Regards; from each one of us.

  • Comment Link nike kyrie 5 Ottobre 07, 2022 posted by nike kyrie 5

    I truly wanted to type a simple remark to be able to say thanks to you for these unique steps you are giving here. My particularly long internet look up has now been recognized with professional ideas to exchange with my pals. I 'd mention that most of us readers are really endowed to dwell in a perfect site with very many awesome professionals with valuable hints. I feel really happy to have seen your entire weblog and look forward to so many more fun minutes reading here. Thanks a lot once more for all the details.

  • Comment Link hermes birkin Ottobre 07, 2022 posted by hermes birkin

    I precisely needed to thank you so much once again. I am not sure the things I would have followed without those aspects documented by you regarding such topic. It was before the depressing circumstance in my position, however , being able to view a new expert avenue you solved it made me to jump over gladness. I'm happy for this service and as well , wish you really know what an amazing job you were providing teaching many people through the use of a blog. I know that you've never met all of us.

  • Comment Link hyperkast Ottobre 07, 2022 posted by hyperkast

    romanichal gypsy wedding dress sac a dos peluche pokemon scarponcini da montagna salomon atelier eme scarpe sposa chase claypool jerseys nokia c3 back cover
    hyperkast

  • Comment Link slowcicle Ottobre 07, 2022 posted by slowcicle

    puma reflective shoes blanc womens plus size sun dresses dark green pinafore dress mexico national soccer team apparel night out wear pittsburgh penguins trucker hat for eu
    slowcicle http://www.slowcicle.com/

  • Comment Link off white clothing Ottobre 07, 2022 posted by off white clothing

    Thank you so much for providing individuals with remarkably marvellous chance to check tips from this site. It is always very great plus jam-packed with fun for me and my office mates to visit your blog at minimum three times in 7 days to study the latest items you have got. Of course, I'm so actually happy with your fantastic things served by you. Selected 4 tips on this page are unequivocally the simplest we have had.

  • Comment Link arnoldeq11 Ottobre 07, 2022 posted by arnoldeq11

    Hot galleries, daily updated collections
    http://porncessation.porntpgs.miaxxx.com/?jaycee

    isp subpoena civil divorce porn we buy old porn tapes news anchor porn madelyn marie makes a porn comic book porn superhero

  • Comment Link bape clothing Ottobre 07, 2022 posted by bape clothing

    I just wanted to post a brief message in order to thank you for these awesome items you are showing on this website. My time consuming internet look up has at the end of the day been paid with high-quality knowledge to share with my pals. I 'd tell you that we visitors are rather lucky to live in a perfect place with many brilliant professionals with insightful guidelines. I feel pretty happy to have come across the webpage and look forward to really more excellent minutes reading here. Thank you once more for a lot of things.

  • Comment Link golden goose Ottobre 07, 2022 posted by golden goose

    Thanks so much for giving everyone a very brilliant possiblity to discover important secrets from this blog. It's always very superb and full of a good time for me and my office mates to search your site a minimum of 3 times in a week to see the latest things you have. And indeed, I am just usually happy with your spectacular strategies you serve. Selected two ideas on this page are essentially the most impressive we have ever had.

Leave a comment

Make sure you enter all the required information, indicated by an asterisk (*). HTML code is not allowed.