Mwachidule The Graphite Crucible

Mwachidule
Mtundu wa graphiteamapangidwa kuchokera ku flake flake graphite monga chopangira chachikulu, ndipo amakonzedwa ndi dongo la pulasitiki kapena kaboni ngati chomangira. Ili ndi mawonekedwe a kukana kutentha kwambiri, kukhathamiritsa kwamphamvu kwamafuta, kukana bwino kwa dzimbiri, komanso moyo wautali wautumiki. Pogwiritsa ntchito kutentha kwakukulu, coefficient of matenthedwe yowonjezera imakhala yaying'ono, ndipo imakhala ndi mphamvu yolimbana ndi kuzizira kofulumira ndi kutentha. Ili ndi kukana kwamphamvu kwa dzimbiri ku mayankho a acidic ndi alkaline, kukhazikika kwamankhwala abwino kwambiri, ndipo satenga nawo gawo pamachitidwe aliwonse amankhwala panthawi yosungunuka. Khoma lamkati la graphite crucible ndi losalala, ndipo chitsulo chosungunula chamadzimadzi sichosavuta kutayikira ndi kumamatira ku khoma lamkati la crucible, kupanga madzi achitsulo kukhala ndi flowability yabwino ndi kuponya mphamvu, oyenera kuponyera ndi kupanga zisankho zosiyanasiyana. Chifukwa cha makhalidwe abwino omwe ali pamwambawa, ma graphite crucibles amagwiritsidwa ntchito kwambiri posungunula zitsulo za aloyi ndi zitsulo zopanda chitsulo ndi ma alloys awo.

Mtundu
Ma graphite crucibles amagwiritsidwa ntchito makamaka pakusungunula zinthu zachitsulo, zomwe zimagawidwa m'mitundu iwiri: graphite yachilengedwe ndi graphite yokumba.
1) Grafiti yachilengedwe
Amapangidwa makamaka ndi flake graphite yachilengedwe monga zopangira zazikulu, ndikuwonjezera dongo ndi zida zina zopangira. Nthawi zambiri amatchedwa clay graphite crucible, pomwe mtundu wa carbon binder crucible umapangidwa ndi asphalt ngati binder. Amapangidwa kokha ndi mphamvu ya dongo yotentha ndipo amatchedwa Hui clay binder type crucible. Yoyamba ili ndi mphamvu zapamwamba komanso kukana kutentha kwa kutentha. Amagwiritsidwa ntchito kusungunula zitsulo, mkuwa, aloyi zamkuwa, ndi zitsulo zina zopanda chitsulo, zokhala ndi makulidwe osiyanasiyana ndi mphamvu zosungunuka kuyambira 250g mpaka 500kg.
Mtundu uwu wa crucible umaphatikizapo zipangizo monga skimming spoon, chivindikiro, mphete yolumikizira, chithandizo cha crucible, ndi ndodo yogwedeza.
2) graphite yopangira
Mitsuko yachilengedwe ya graphite yomwe yatchulidwa pamwambapa nthawi zambiri imakhala ndi 50% ya mchere wadothi, pomwe zonyansa (zokhala ndi phulusa) muzitsulo za graphite zopanga zimakhala zosakwana 1%, zomwe zimagwiritsidwa ntchito poyenga zitsulo zoyera kwambiri. Palinso ma graphite apamwamba kwambiri omwe adalandira chithandizo chapadera choyeretsedwa (phulusa <20ppm). Zopangira graphite crucibles nthawi zambiri zimagwiritsidwa ntchito kusungunula zitsulo zazing'ono zamtengo wapatali, zitsulo zoyera kwambiri, kapena zitsulo zosungunuka kwambiri ndi ma oxides. Itha kugwiritsidwanso ntchito ngati crucible pakuwunika kwa gasi muzitsulo.

Njira yopanga
Njira yopangira ma graphite crucibles imatha kugawidwa m'mitundu itatu: kuumba m'manja, kuumba mozungulira, ndi kuponderezana. Ubwino wa crucible umagwirizana kwambiri ndi njira yopangira njira. Njira yopangira imatsimikizira kapangidwe kake, kachulukidwe, porosity, ndi mphamvu zamakina za thupi lopachikidwa.
Ma crucibles opangidwa ndi manja pazolinga zapadera sangathe kupangidwa pogwiritsa ntchito njira zozungulira kapena kuponderezana. Ma crucibles ena apadera amatha kupangidwa mwa kuphatikiza kuumba kozungulira ndi kuumba kwamanja.
Kuumba mozungulira ndi njira yomwe makina ozungulira amatha kuyendetsa nkhungu kuti igwire ntchito ndikugwiritsa ntchito mpeni wamkati kutulutsa dongo kuti amalize kuumba crucible.
Kumangirira kumagwiritsa ntchito zida zokakamiza monga kuthamanga kwamafuta, kuthamanga kwamadzi, kapena kuthamanga kwa mpweya ngati mphamvu ya kinetic, kugwiritsa ntchito nkhungu zachitsulo ngati zida zapulasitiki zopangira crucible. Poyerekeza ndi njira yozungulira yozungulira, ili ndi ubwino wa njira zosavuta, zopangira zochepa, zokolola zambiri komanso zogwira mtima, zochepetsetsa zogwira ntchito, kuchepa kwa chinyezi, kuchepa kwa crucible ndi porosity, khalidwe lapamwamba la mankhwala ndi kachulukidwe.

Kusamalira ndi kusunga
Ma graphite crucibles ayenera kutetezedwa ku chinyezi. Ma graphite crucibles amawopa kwambiri chinyezi, chomwe chingakhudze kwambiri khalidwe. Ngati agwiritsidwa ntchito ndi crucible yonyowa, amatha kung'amba, kuphulika, kugwa m'mphepete, ndi kugwa pansi, zomwe zimapangitsa kutaya kwachitsulo chosungunuka ngakhalenso ngozi zokhudzana ndi ntchito. Chifukwa chake, posunga ndikugwiritsa ntchito ma graphite crucibles, chidwi chiyenera kulipidwa pakupewa chinyezi.
Nyumba yosungiramo zinthu zosungiramo ma graphite crucibles iyenera kukhala yowuma ndi mpweya wabwino, ndipo kutentha kuyenera kusamalidwa pakati pa 5 ℃ ndi 25 ℃, ndi chinyezi cha 50-60%. crucibles sayenera kusungidwa pa nthaka njerwa kapena pansi simenti kupewa chinyezi. Chochuluka cha graphite crucible chiyenera kuikidwa pamtengo, makamaka 25-30cm pamwamba pa nthaka; Zopakidwa m'mabokosi amatabwa, madengu a wicker, kapena matumba a udzu, zogona ziyenera kuikidwa pansi pa pallets, osachepera 20cm kuchokera pansi. Kuyika wosanjikiza womverera pa ogona kumathandiza kwambiri kutchinjiriza chinyezi. Pa nthawi ina ya stacking, m`pofunika okwana m`munsi wosanjikiza mozondoka, makamaka ndi chapamwamba ndi m`munsi zigawo zikuyang'anizana. Kutalika pakati pa stacking ndi stacking sikuyenera kukhala motalika kwambiri. Nthawi zambiri, stacking ayenera kuchitidwa kamodzi miyezi iwiri iliyonse. Ngati chinyontho cha pansi sichili chokwera, kusungitsa kungathe kuchitika kamodzi pa miyezi itatu iliyonse. Mwachidule, kusungitsa pafupipafupi kumatha kukhala ndi zotsatira zabwino zotsimikizira chinyezi.