Jecha reMullite
Jecha reMulliteimhando yezvinhu zvinodzivirira aluminosilicate zvinoshandiswa zvakanyanya muindasitiri yekugadzira foundry.
Kuumbwa Kwemakemikari Makuru:
Zvikamu zvikuru zvemakemikari zvejecha remullite ndeizvi: Aluminum Oxide (Al₂O₃) neSilicon Dioxide (SiO₂). Makemikoro akajairika ndeaya: 42% ≤ Al₂O₃ ≤ 47% uye 51% ≤ SiO₂ ≤ 53%. Inewo huwandu hushoma hweIron Oxide (Fe₂O₃), Alkali Metal Oxides (Na₂O+K₂O), nezvimwe zvinhu zvidiki.
Maitiro Ekugadzira:
Jecha reMullite rinowanzogadzirwa uchishandisa zvicherwa zvakapfuma mualuminosilicate, zvakaita sekaolin, ivhu rakaoma, kana muscovite. Maitiro acho anosanganisira kupwanya zvinhu zvakagadziriswa, kuzvisanganisa nezvimwe zvinowedzera, uye kuzvidzvanya kuita chimiro. Maumbirwo aya anobva aiswa muchoto chinodziya zvakanyanya patembiricha iri pakati pe1300°C ne1550°C. Mushure mekunyungudika, chigadzirwa chinopwanywa, kucheneswa, kuparadzaniswa nemagnetic kuti chibviswe iron, uye mamwe maitiro ekuwana zvigadzirwa zvejecha remullite zvehukuru hwakasiyana hwezvikamu.
Magadzirirwo eSaizi yeChidimbu:
Jecha reMullite rinowanikwa mumhando dzakasiyana-siyana dzezvimedu. Zvinhu zvikuru zvatinoshandisa zvinosanganisira: mesh 8-16, mesh 16-30, mesh 30-60, mesh 60-80, uye mesh 80-120. Pamusoro pezvo, tinopa mhando dzakanaka dzinozivikanwa semullite powder, dzakadai se200 mesh uye 300 mesh.
Hunhu hweKushanda:
Kusimba Kwakanyanya:Nekusimba kwesimbi inenge 1750°C, inotsungirira kupisa kwakanyanya kwesimbi yakanyungudutswa panguva yekuumbwa, ichidzivirira goko remould kubva mukukuvadzwa.
Kugadzikana Kwakanaka Kwekupisa:Jecha reMullite rinochengetedza kugadzikana kwehukuru hwaro kana richichinja tembiricha. Rinodzivirira kupisa kana kudzikira, zvichiita kuti zvigadziko zvive zvakanaka.
Zvivakwa Zviri Nyore zveShakeout:Mushure mekukanda, jecha remullite rinogona kubviswa zviri nyore (kuzununguka) kubva mumatanda. Izvi zvinoderedza kudiwa kwebasa rekupedzisa rinotevera uye zvinovandudza kushanda zvakanaka kwekugadzira.
Hunhu Hwepamusoro hwekukanda:Kushandisa jecha remullite sechishongo kunoita kuti pave nekuumbwa kwejecha rakatsetseka. Kunoderedza zvikanganiso zvakaita semaburi ejecha nemaburi emhepo, nokudaro zvichiwedzera kunaka kwezviumbwa.
| Tsanangudzo | Giredhi reKudya kwemanheru | Giredhi 1 | Giredhi 2 |
| Al2O3 | 44%-45% | 43%-45% | 43%-50% |
| SiO2 | 50%-53% | 50%-54% | 47%-53% |
| Fe2O3 | ≤1.0% | ≤1.5% | ≤2.1% |
| K2O+Na2O | ≤0.5% | ≤0.6% | ≤0.8% |
| CaO | ≤0.4% | ≤0.5% | ≤0.5% |
| TiO2 | ≤0.3% | ≤0.7% | ≤0.3% |
| Xaustic Soda | ≤0.5% | ≤0.5% | ≤0.7% |
| Kuwanda kwehuwandu | ≥2.5g/cm3 | ≥2.5g/cm3 | ≥2.45g/cm3 |
Chinhu chikuru chekukanda nemazvo inyaya yekugadzira magoko emhando ye mold (maitiro ekuputira patani ye wax nezvinhu zvakawanda zvinoramba kugadzira goko rekunze. Mushure mekunge patani ye wax yanyunguduka, panobva paumbwa gomba rekudururira simbi yakanyungudutswa). Jecha reMullite rinoshandiswa zvakanyanya sechikamu chinoramba mugoko re mold uye rinoshandiswa pazvikamu zvakasiyana zvegoko, kunyanya zvinotevera:
1. Goko Repamusoro (Rinosarudza Zvakananga Hunhu Hwepamusoro hweChigadziko)
Basa:Rutivi rwepamusoro rwuri padivi pechinhu chakaumbwa uye runofanira kuva nechokwadi chekuti simbi yakanyungudutswa inopedzwa zvakanaka (kudzivisa kukweshana uye kudonha) ukuwo ruchitsungirira kukanganiswa kwesimbi yakanyungudutswa pakutanga.
2. Goko reMusana (Rinopa Simba uye Kufema Kwazvo)
Basa:Goko rekumashure rine zvidimbu zvakawanda riri kunze kwechikamu chepamusoro. Rinotsigira simba rose regoko rechimurenga (rinodzivirira kushanduka kana kuputsika panguva yekudurura) ukuwo richivimbisa kufema zvakanaka (kuburitsa magasi kubva mugomba uye kudzivirira maburi ari mugomba).
3. Zvikumbiro Zvakanyanya zveKukanda Zvine Madiro Akawanda
Kukanda alloy inodziya zvakanyanya:zvakaita sema "turbine blades" einjini yendege (tembiricha inodururwa ye1500-1600°C), inoda kuti ganda re "mold" rikwanise kutsungirira tembiricha dzakanyanya. Kusasimba kwakanyanya kwejecha re "mullite" kunogona kutsiva jecha re "zircon" rinodhura (nzvimbo yekunyunguduka ye2550°C, asi rinodhura), richisangana nezvinodiwa zvekudzivirira tembiricha yepamusoro uku richideredza mitengo.
Kune simbi dzinoshandiswa:zvakaita searuminiyamu alloys uye magnesium alloys (izvo zvinobata zvakanyanya uye zvinobata nyore nyore neSiO₂ mujecha re quartz kuti zvigadzire inclusions), kugadzikana kwemakemikari ejecha re mullite kunogona kuderedza reactivity uye kudzivirira kuumbwa kwe "oxidation inclusions" mu casting.
Kune ma "castings" makuru nemazvo:zvakaita semabhokisi egiya remhepo (anogona kurema matani akati wandei), goko remuchina wekugadzira zvinhu rinoda simba rakawanda rekuvaka. Rutivi rwekumashure runoumbwa nejecha remullite nebinder rwakasimba, zvichideredza njodzi yekukura nekuputsika kwemuchina wekugadzira zvinhu.
4. Kusanganiswa Nezvimwe Zvinhu Zvinodzora Ruvara
Mukugadzirwa chaiko, jecha remullite rinowanzoshandiswa pamwe chete nezvimwe zvinhu kuti zviite kuti ganda remufuru rishande zvakanaka:
Kusanganiswa nejecha re zircon:Jecha rezircon rinoshandiswa sechikamu chepamusoro (kuona kuti chikamu chepamusoro chakakwirira) uye jecha remullite sechikamu chemashure (kuderedza mitengo). Izvi zvakakodzera kuzvinhu zvinogadzirwa nesimbi zvine zvinodiwa zvakanyanya pamusoro, zvakaita sezvikamu zvemuchadenga.
Yakabatanidzwa nejecha re quartz:Kune zvinhu zvinogadzirwa nesimbi zvine tembiricha yakaderera (senge copper alloy, melting point 1083℃), zvinogona kutsiva jecha re quartz zvishoma uye kushandisa mullite jecha shoma kuderedza kuputika kweganda.
| Maitiro Ekutarisa Pakugadzira Masherufu Akanyatsogadzirwa Nekukanda | ||
| Hupfu hwepamusoro hwese, zirconium powder | 325 mesh + silica sol | Jecha: jecha rezirconium rine mesh 120 |
| Kumashure kwerukoko rwekumashure | 325 mesh+silica sol+mullite powder 200 mesh | Jecha: jecha rine mullite rine mambure 30-60 |
| Rutivi rwekusimbisa | Hupfu hweMullite 200 mesh + silica sol | Jecha: jecha rine mullite rine mesh 16-30 |
| Kuvhara slurry | Hupfu hweMullite 200 mesh + silica sol | _ |
Shandong Robert New Material Co., Ltd.iri muZibo City, Shandong Province, China, inova nzvimbo yekugadzira zvinhu zvinoramba kushanda. Isu tiri kambani yemazuva ano inobatanidza tsvakurudzo nekuvandudza, kugadzira, kutengesa, dhizaini yekubikira nekuvaka, tekinoroji, uye kutumira zvinhu zvinoramba kushanda kunze kwenyika. Tine michina yakakwana, tekinoroji yepamusoro, simba rakasimba rehunyanzvi, mhando yepamusoro yechigadzirwa, uye mukurumbira wakanaka. Fekitori yedu inofukidza maeka anopfuura mazana maviri uye gore rega rega zvinhu zvinoramba kushanda zvine chimiro zvinosvika matani zviuru zvitatu uye zvinhu zvisina chimiro zvinosvika matani zviuru gumi nezviviri.
Zvigadzirwa zvedu zvikuru zvezvinhu zvinoramba kusimba zvinosanganisira:zvinhu zvinoramba alkaline; zvinhu zvinoramba aruminiyamu silicon; zvinhu zvisina kuumbwa zvinoramba; zvinhu zvinodzivirira kupisa zvinodzivirira; zvinhu zvakakosha zvinoramba; zvinhu zvinoshanda zvinoramba zvemasisitimu ekukanda anoenderera mberi.
Mibvunzo Inowanzo bvunzwa
Unoda rubatsiro here? Iva nechokwadi chekushanyira maforamu edu ekutsigira kuti uwane mhinduro dzemibvunzo yako!
Isu tiri vagadziri chaivo, fekitari yedu yagara iine hunyanzvi mukugadzira zvinhu zvinoramba kugadzika kweanopfuura makore makumi matatu. Tinovimbisa kupa mutengo wakanakisa, sevhisi yakanakisisa isati yatengeswa uye mushure mekutengesa.
Pakugadzira kwega kwega, RBT ine QC system yakakwana yemakemikari uye hunhu hwemuviri. Uye tichaedza zvinhu, uye chitupa chemhando yepamusoro chichatumirwa nezvinhu. Kana muine zvinodiwa zvakakosha, tichaedza nepese patinogona kuti zvienderane nazvo.
Zvichienderana nehuwandu, nguva yedu yekutumira yakasiyana. Asi tinovimbisa kutumira nekukurumidza sezvinobvira nerubatsiro rwemhando.
Ehe, tinopa mienzaniso yemahara.
Ehe, zvechokwadi, munogamuchirwa kushanyira kambani yeRBT nezvigadzirwa zvedu.
Hapana muganho, tinogona kukupa mazano akanakisa uye mhinduro zvichienderana nemamiriro ako ezvinhu.
Tave tichigadzira zvinhu zvinoramba kushanda kwemvura kwemakore anopfuura makumi matatu, tine rutsigiro rwakasimba rwehunyanzvi uye ruzivo rwakakura, tinogona kubatsira vatengi kugadzira makinu akasiyana uye kupa sevhisi imwe chete.
